12d1661a5SPawel Jakub Dawidek /*- 2e6757059SPawel Jakub Dawidek * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 32d1661a5SPawel Jakub Dawidek * All rights reserved. 42d1661a5SPawel Jakub Dawidek * 52d1661a5SPawel Jakub Dawidek * Redistribution and use in source and binary forms, with or without 62d1661a5SPawel Jakub Dawidek * modification, are permitted provided that the following conditions 72d1661a5SPawel Jakub Dawidek * are met: 82d1661a5SPawel Jakub Dawidek * 1. Redistributions of source code must retain the above copyright 92d1661a5SPawel Jakub Dawidek * notice, this list of conditions and the following disclaimer. 102d1661a5SPawel Jakub Dawidek * 2. Redistributions in binary form must reproduce the above copyright 112d1661a5SPawel Jakub Dawidek * notice, this list of conditions and the following disclaimer in the 122d1661a5SPawel Jakub Dawidek * documentation and/or other materials provided with the distribution. 132d1661a5SPawel Jakub Dawidek * 142d1661a5SPawel Jakub Dawidek * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 152d1661a5SPawel Jakub Dawidek * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 162d1661a5SPawel Jakub Dawidek * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 172d1661a5SPawel Jakub Dawidek * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 182d1661a5SPawel Jakub Dawidek * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 192d1661a5SPawel Jakub Dawidek * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 202d1661a5SPawel Jakub Dawidek * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 212d1661a5SPawel Jakub Dawidek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 222d1661a5SPawel Jakub Dawidek * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 232d1661a5SPawel Jakub Dawidek * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 242d1661a5SPawel Jakub Dawidek * SUCH DAMAGE. 252d1661a5SPawel Jakub Dawidek */ 262d1661a5SPawel Jakub Dawidek 272d1661a5SPawel Jakub Dawidek #include <sys/cdefs.h> 282d1661a5SPawel Jakub Dawidek __FBSDID("$FreeBSD$"); 292d1661a5SPawel Jakub Dawidek 302d1661a5SPawel Jakub Dawidek #include <sys/param.h> 312d1661a5SPawel Jakub Dawidek #include <sys/systm.h> 322d1661a5SPawel Jakub Dawidek #include <sys/kernel.h> 332d1661a5SPawel Jakub Dawidek #include <sys/module.h> 342d1661a5SPawel Jakub Dawidek #include <sys/limits.h> 352d1661a5SPawel Jakub Dawidek #include <sys/lock.h> 362d1661a5SPawel Jakub Dawidek #include <sys/mutex.h> 372d1661a5SPawel Jakub Dawidek #include <sys/bio.h> 385d807a0eSAndrey V. Elsukov #include <sys/sbuf.h> 392d1661a5SPawel Jakub Dawidek #include <sys/sysctl.h> 402d1661a5SPawel Jakub Dawidek #include <sys/malloc.h> 419da3072cSPawel Jakub Dawidek #include <sys/eventhandler.h> 422d1661a5SPawel Jakub Dawidek #include <vm/uma.h> 432d1661a5SPawel Jakub Dawidek #include <geom/geom.h> 442d1661a5SPawel Jakub Dawidek #include <sys/proc.h> 452d1661a5SPawel Jakub Dawidek #include <sys/kthread.h> 4663710c4dSJohn Baldwin #include <sys/sched.h> 472d1661a5SPawel Jakub Dawidek #include <geom/raid3/g_raid3.h> 482d1661a5SPawel Jakub Dawidek 49cb08c2ccSAlexander Leidinger FEATURE(geom_raid3, "GEOM RAID-3 functionality"); 502d1661a5SPawel Jakub Dawidek 515bb84bc8SRobert Watson static MALLOC_DEFINE(M_RAID3, "raid3_data", "GEOM_RAID3 Data"); 522d1661a5SPawel Jakub Dawidek 532d1661a5SPawel Jakub Dawidek SYSCTL_DECL(_kern_geom); 546472ac3dSEd Schouten static SYSCTL_NODE(_kern_geom, OID_AUTO, raid3, CTLFLAG_RW, 0, 556472ac3dSEd Schouten "GEOM_RAID3 stuff"); 56809a9dc6SPawel Jakub Dawidek u_int g_raid3_debug = 0; 576d7b8aecSPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.debug", &g_raid3_debug); 582d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, debug, CTLFLAG_RW, &g_raid3_debug, 0, 592d1661a5SPawel Jakub Dawidek "Debug level"); 60e5e7825cSPawel Jakub Dawidek static u_int g_raid3_timeout = 4; 614d006a98SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.timeout", &g_raid3_timeout); 622d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, timeout, CTLFLAG_RW, &g_raid3_timeout, 632d1661a5SPawel Jakub Dawidek 0, "Time to wait on all raid3 components"); 644d006a98SPawel Jakub Dawidek static u_int g_raid3_idletime = 5; 654d006a98SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.idletime", &g_raid3_idletime); 664d006a98SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, idletime, CTLFLAG_RW, 674d006a98SPawel Jakub Dawidek &g_raid3_idletime, 0, "Mark components as clean when idling"); 683aae74ecSPawel Jakub Dawidek static u_int g_raid3_disconnect_on_failure = 1; 6967cae8aaSPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.disconnect_on_failure", 7067cae8aaSPawel Jakub Dawidek &g_raid3_disconnect_on_failure); 713aae74ecSPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, disconnect_on_failure, CTLFLAG_RW, 723aae74ecSPawel Jakub Dawidek &g_raid3_disconnect_on_failure, 0, "Disconnect component on I/O failure."); 73e6757059SPawel Jakub Dawidek static u_int g_raid3_syncreqs = 2; 743650be51SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.sync_requests", &g_raid3_syncreqs); 753650be51SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, sync_requests, CTLFLAG_RDTUN, 763650be51SPawel Jakub Dawidek &g_raid3_syncreqs, 0, "Parallel synchronization I/O requests."); 77ed940a82SPawel Jakub Dawidek static u_int g_raid3_use_malloc = 0; 78ed940a82SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.use_malloc", &g_raid3_use_malloc); 79ed940a82SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, use_malloc, CTLFLAG_RDTUN, 80ed940a82SPawel Jakub Dawidek &g_raid3_use_malloc, 0, "Use malloc(9) instead of uma(9)."); 812d1661a5SPawel Jakub Dawidek 822d1661a5SPawel Jakub Dawidek static u_int g_raid3_n64k = 50; 832d1661a5SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.n64k", &g_raid3_n64k); 842d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, n64k, CTLFLAG_RD, &g_raid3_n64k, 0, 852d1661a5SPawel Jakub Dawidek "Maximum number of 64kB allocations"); 862d1661a5SPawel Jakub Dawidek static u_int g_raid3_n16k = 200; 872d1661a5SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.n16k", &g_raid3_n16k); 882d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, n16k, CTLFLAG_RD, &g_raid3_n16k, 0, 892d1661a5SPawel Jakub Dawidek "Maximum number of 16kB allocations"); 902d1661a5SPawel Jakub Dawidek static u_int g_raid3_n4k = 1200; 912d1661a5SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.n4k", &g_raid3_n4k); 922d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, n4k, CTLFLAG_RD, &g_raid3_n4k, 0, 932d1661a5SPawel Jakub Dawidek "Maximum number of 4kB allocations"); 942d1661a5SPawel Jakub Dawidek 956472ac3dSEd Schouten static SYSCTL_NODE(_kern_geom_raid3, OID_AUTO, stat, CTLFLAG_RW, 0, 962d1661a5SPawel Jakub Dawidek "GEOM_RAID3 statistics"); 97dba915cfSPawel Jakub Dawidek static u_int g_raid3_parity_mismatch = 0; 98dba915cfSPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3_stat, OID_AUTO, parity_mismatch, CTLFLAG_RD, 99dba915cfSPawel Jakub Dawidek &g_raid3_parity_mismatch, 0, "Number of failures in VERIFY mode"); 1002d1661a5SPawel Jakub Dawidek 1012d1661a5SPawel Jakub Dawidek #define MSLEEP(ident, mtx, priority, wmesg, timeout) do { \ 1022d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, (ident)); \ 1032d1661a5SPawel Jakub Dawidek msleep((ident), (mtx), (priority), (wmesg), (timeout)); \ 1042d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Woken up %p.", __func__, (ident)); \ 1052d1661a5SPawel Jakub Dawidek } while (0) 1062d1661a5SPawel Jakub Dawidek 107712fe9bdSPawel Jakub Dawidek static eventhandler_tag g_raid3_pre_sync = NULL; 1082d1661a5SPawel Jakub Dawidek 1092d1661a5SPawel Jakub Dawidek static int g_raid3_destroy_geom(struct gctl_req *req, struct g_class *mp, 1102d1661a5SPawel Jakub Dawidek struct g_geom *gp); 1112d1661a5SPawel Jakub Dawidek static g_taste_t g_raid3_taste; 1129da3072cSPawel Jakub Dawidek static void g_raid3_init(struct g_class *mp); 1139da3072cSPawel Jakub Dawidek static void g_raid3_fini(struct g_class *mp); 1142d1661a5SPawel Jakub Dawidek 1152d1661a5SPawel Jakub Dawidek struct g_class g_raid3_class = { 1162d1661a5SPawel Jakub Dawidek .name = G_RAID3_CLASS_NAME, 1172d1661a5SPawel Jakub Dawidek .version = G_VERSION, 1182d1661a5SPawel Jakub Dawidek .ctlreq = g_raid3_config, 1192d1661a5SPawel Jakub Dawidek .taste = g_raid3_taste, 1209da3072cSPawel Jakub Dawidek .destroy_geom = g_raid3_destroy_geom, 1219da3072cSPawel Jakub Dawidek .init = g_raid3_init, 1229da3072cSPawel Jakub Dawidek .fini = g_raid3_fini 1232d1661a5SPawel Jakub Dawidek }; 1242d1661a5SPawel Jakub Dawidek 1252d1661a5SPawel Jakub Dawidek 1262d1661a5SPawel Jakub Dawidek static void g_raid3_destroy_provider(struct g_raid3_softc *sc); 127d97d5ee9SPawel Jakub Dawidek static int g_raid3_update_disk(struct g_raid3_disk *disk, u_int state); 128d97d5ee9SPawel Jakub Dawidek static void g_raid3_update_device(struct g_raid3_softc *sc, boolean_t force); 1292d1661a5SPawel Jakub Dawidek static void g_raid3_dumpconf(struct sbuf *sb, const char *indent, 1302d1661a5SPawel Jakub Dawidek struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp); 1312d1661a5SPawel Jakub Dawidek static void g_raid3_sync_stop(struct g_raid3_softc *sc, int type); 1323650be51SPawel Jakub Dawidek static int g_raid3_register_request(struct bio *pbp); 1333650be51SPawel Jakub Dawidek static void g_raid3_sync_release(struct g_raid3_softc *sc); 1342d1661a5SPawel Jakub Dawidek 1352d1661a5SPawel Jakub Dawidek 1362d1661a5SPawel Jakub Dawidek static const char * 1372d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(int state) 1382d1661a5SPawel Jakub Dawidek { 1392d1661a5SPawel Jakub Dawidek 1402d1661a5SPawel Jakub Dawidek switch (state) { 1412d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NODISK: 1422d1661a5SPawel Jakub Dawidek return ("NODISK"); 1432d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NONE: 1442d1661a5SPawel Jakub Dawidek return ("NONE"); 1452d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 1462d1661a5SPawel Jakub Dawidek return ("NEW"); 1472d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 1482d1661a5SPawel Jakub Dawidek return ("ACTIVE"); 1492d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 1502d1661a5SPawel Jakub Dawidek return ("STALE"); 1512d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 1522d1661a5SPawel Jakub Dawidek return ("SYNCHRONIZING"); 1532d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_DISCONNECTED: 1542d1661a5SPawel Jakub Dawidek return ("DISCONNECTED"); 1552d1661a5SPawel Jakub Dawidek default: 1562d1661a5SPawel Jakub Dawidek return ("INVALID"); 1572d1661a5SPawel Jakub Dawidek } 1582d1661a5SPawel Jakub Dawidek } 1592d1661a5SPawel Jakub Dawidek 1602d1661a5SPawel Jakub Dawidek static const char * 1612d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(int state) 1622d1661a5SPawel Jakub Dawidek { 1632d1661a5SPawel Jakub Dawidek 1642d1661a5SPawel Jakub Dawidek switch (state) { 1652d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_STARTING: 1662d1661a5SPawel Jakub Dawidek return ("STARTING"); 1672d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_DEGRADED: 1682d1661a5SPawel Jakub Dawidek return ("DEGRADED"); 1692d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_COMPLETE: 1702d1661a5SPawel Jakub Dawidek return ("COMPLETE"); 1712d1661a5SPawel Jakub Dawidek default: 1722d1661a5SPawel Jakub Dawidek return ("INVALID"); 1732d1661a5SPawel Jakub Dawidek } 1742d1661a5SPawel Jakub Dawidek } 1752d1661a5SPawel Jakub Dawidek 1762d1661a5SPawel Jakub Dawidek const char * 1772d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(struct g_raid3_disk *disk) 1782d1661a5SPawel Jakub Dawidek { 1792d1661a5SPawel Jakub Dawidek 1802d1661a5SPawel Jakub Dawidek if (disk->d_consumer == NULL || disk->d_consumer->provider == NULL) 1812d1661a5SPawel Jakub Dawidek return ("[unknown]"); 1822d1661a5SPawel Jakub Dawidek return (disk->d_name); 1832d1661a5SPawel Jakub Dawidek } 1842d1661a5SPawel Jakub Dawidek 185ed940a82SPawel Jakub Dawidek static void * 186ed940a82SPawel Jakub Dawidek g_raid3_alloc(struct g_raid3_softc *sc, size_t size, int flags) 187ed940a82SPawel Jakub Dawidek { 188ed940a82SPawel Jakub Dawidek void *ptr; 189d4060fa6SAlexander Motin enum g_raid3_zones zone; 190ed940a82SPawel Jakub Dawidek 191d4060fa6SAlexander Motin if (g_raid3_use_malloc || 192d4060fa6SAlexander Motin (zone = g_raid3_zone(size)) == G_RAID3_NUM_ZONES) 193ed940a82SPawel Jakub Dawidek ptr = malloc(size, M_RAID3, flags); 194ed940a82SPawel Jakub Dawidek else { 195d4060fa6SAlexander Motin ptr = uma_zalloc_arg(sc->sc_zones[zone].sz_zone, 196d4060fa6SAlexander Motin &sc->sc_zones[zone], flags); 197d4060fa6SAlexander Motin sc->sc_zones[zone].sz_requested++; 198ed940a82SPawel Jakub Dawidek if (ptr == NULL) 199d4060fa6SAlexander Motin sc->sc_zones[zone].sz_failed++; 200ed940a82SPawel Jakub Dawidek } 201ed940a82SPawel Jakub Dawidek return (ptr); 202ed940a82SPawel Jakub Dawidek } 203ed940a82SPawel Jakub Dawidek 204ed940a82SPawel Jakub Dawidek static void 205ed940a82SPawel Jakub Dawidek g_raid3_free(struct g_raid3_softc *sc, void *ptr, size_t size) 206ed940a82SPawel Jakub Dawidek { 207d4060fa6SAlexander Motin enum g_raid3_zones zone; 208ed940a82SPawel Jakub Dawidek 209d4060fa6SAlexander Motin if (g_raid3_use_malloc || 210d4060fa6SAlexander Motin (zone = g_raid3_zone(size)) == G_RAID3_NUM_ZONES) 211ed940a82SPawel Jakub Dawidek free(ptr, M_RAID3); 212ed940a82SPawel Jakub Dawidek else { 213d4060fa6SAlexander Motin uma_zfree_arg(sc->sc_zones[zone].sz_zone, 214d4060fa6SAlexander Motin ptr, &sc->sc_zones[zone]); 215ed940a82SPawel Jakub Dawidek } 216ed940a82SPawel Jakub Dawidek } 217ed940a82SPawel Jakub Dawidek 2183650be51SPawel Jakub Dawidek static int 2193650be51SPawel Jakub Dawidek g_raid3_uma_ctor(void *mem, int size, void *arg, int flags) 2203650be51SPawel Jakub Dawidek { 2213650be51SPawel Jakub Dawidek struct g_raid3_zone *sz = arg; 2223650be51SPawel Jakub Dawidek 2230d14fae5SPawel Jakub Dawidek if (sz->sz_max > 0 && sz->sz_inuse == sz->sz_max) 2243650be51SPawel Jakub Dawidek return (ENOMEM); 2253650be51SPawel Jakub Dawidek sz->sz_inuse++; 2263650be51SPawel Jakub Dawidek return (0); 2273650be51SPawel Jakub Dawidek } 2283650be51SPawel Jakub Dawidek 2293650be51SPawel Jakub Dawidek static void 2303650be51SPawel Jakub Dawidek g_raid3_uma_dtor(void *mem, int size, void *arg) 2313650be51SPawel Jakub Dawidek { 2323650be51SPawel Jakub Dawidek struct g_raid3_zone *sz = arg; 2333650be51SPawel Jakub Dawidek 2343650be51SPawel Jakub Dawidek sz->sz_inuse--; 2353650be51SPawel Jakub Dawidek } 2363650be51SPawel Jakub Dawidek 23706b215fdSAlexander Motin #define g_raid3_xor(src, dst, size) \ 23806b215fdSAlexander Motin _g_raid3_xor((uint64_t *)(src), \ 2392d1661a5SPawel Jakub Dawidek (uint64_t *)(dst), (size_t)size) 2402d1661a5SPawel Jakub Dawidek static void 24106b215fdSAlexander Motin _g_raid3_xor(uint64_t *src, uint64_t *dst, size_t size) 2422d1661a5SPawel Jakub Dawidek { 2432d1661a5SPawel Jakub Dawidek 2442d1661a5SPawel Jakub Dawidek KASSERT((size % 128) == 0, ("Invalid size: %zu.", size)); 2452d1661a5SPawel Jakub Dawidek for (; size > 0; size -= 128) { 24606b215fdSAlexander Motin *dst++ ^= (*src++); 24706b215fdSAlexander Motin *dst++ ^= (*src++); 24806b215fdSAlexander Motin *dst++ ^= (*src++); 24906b215fdSAlexander Motin *dst++ ^= (*src++); 25006b215fdSAlexander Motin *dst++ ^= (*src++); 25106b215fdSAlexander Motin *dst++ ^= (*src++); 25206b215fdSAlexander Motin *dst++ ^= (*src++); 25306b215fdSAlexander Motin *dst++ ^= (*src++); 25406b215fdSAlexander Motin *dst++ ^= (*src++); 25506b215fdSAlexander Motin *dst++ ^= (*src++); 25606b215fdSAlexander Motin *dst++ ^= (*src++); 25706b215fdSAlexander Motin *dst++ ^= (*src++); 25806b215fdSAlexander Motin *dst++ ^= (*src++); 25906b215fdSAlexander Motin *dst++ ^= (*src++); 26006b215fdSAlexander Motin *dst++ ^= (*src++); 26106b215fdSAlexander Motin *dst++ ^= (*src++); 2622d1661a5SPawel Jakub Dawidek } 2632d1661a5SPawel Jakub Dawidek } 2642d1661a5SPawel Jakub Dawidek 265dba915cfSPawel Jakub Dawidek static int 266dba915cfSPawel Jakub Dawidek g_raid3_is_zero(struct bio *bp) 267dba915cfSPawel Jakub Dawidek { 268dba915cfSPawel Jakub Dawidek static const uint64_t zeros[] = { 269dba915cfSPawel Jakub Dawidek 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 270dba915cfSPawel Jakub Dawidek }; 271dba915cfSPawel Jakub Dawidek u_char *addr; 272dba915cfSPawel Jakub Dawidek ssize_t size; 273dba915cfSPawel Jakub Dawidek 274dba915cfSPawel Jakub Dawidek size = bp->bio_length; 275dba915cfSPawel Jakub Dawidek addr = (u_char *)bp->bio_data; 276dba915cfSPawel Jakub Dawidek for (; size > 0; size -= sizeof(zeros), addr += sizeof(zeros)) { 277dba915cfSPawel Jakub Dawidek if (bcmp(addr, zeros, sizeof(zeros)) != 0) 278dba915cfSPawel Jakub Dawidek return (0); 279dba915cfSPawel Jakub Dawidek } 280dba915cfSPawel Jakub Dawidek return (1); 281dba915cfSPawel Jakub Dawidek } 282dba915cfSPawel Jakub Dawidek 2832d1661a5SPawel Jakub Dawidek /* 2842d1661a5SPawel Jakub Dawidek * --- Events handling functions --- 2852d1661a5SPawel Jakub Dawidek * Events in geom_raid3 are used to maintain disks and device status 2862d1661a5SPawel Jakub Dawidek * from one thread to simplify locking. 2872d1661a5SPawel Jakub Dawidek */ 2882d1661a5SPawel Jakub Dawidek static void 2892d1661a5SPawel Jakub Dawidek g_raid3_event_free(struct g_raid3_event *ep) 2902d1661a5SPawel Jakub Dawidek { 2912d1661a5SPawel Jakub Dawidek 2922d1661a5SPawel Jakub Dawidek free(ep, M_RAID3); 2932d1661a5SPawel Jakub Dawidek } 2942d1661a5SPawel Jakub Dawidek 2952d1661a5SPawel Jakub Dawidek int 2962d1661a5SPawel Jakub Dawidek g_raid3_event_send(void *arg, int state, int flags) 2972d1661a5SPawel Jakub Dawidek { 2982d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 2992d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 3002d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 3012d1661a5SPawel Jakub Dawidek int error; 3022d1661a5SPawel Jakub Dawidek 3032d1661a5SPawel Jakub Dawidek ep = malloc(sizeof(*ep), M_RAID3, M_WAITOK); 3042d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sending event %p.", __func__, ep); 3052d1661a5SPawel Jakub Dawidek if ((flags & G_RAID3_EVENT_DEVICE) != 0) { 3062d1661a5SPawel Jakub Dawidek disk = NULL; 3072d1661a5SPawel Jakub Dawidek sc = arg; 3082d1661a5SPawel Jakub Dawidek } else { 3092d1661a5SPawel Jakub Dawidek disk = arg; 3102d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 3112d1661a5SPawel Jakub Dawidek } 3122d1661a5SPawel Jakub Dawidek ep->e_disk = disk; 3132d1661a5SPawel Jakub Dawidek ep->e_state = state; 3142d1661a5SPawel Jakub Dawidek ep->e_flags = flags; 3152d1661a5SPawel Jakub Dawidek ep->e_error = 0; 3162d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3172d1661a5SPawel Jakub Dawidek TAILQ_INSERT_TAIL(&sc->sc_events, ep, e_next); 3182d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3192d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 3202d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 3212d1661a5SPawel Jakub Dawidek wakeup(sc); 3222d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 3232d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 3242d1661a5SPawel Jakub Dawidek if ((flags & G_RAID3_EVENT_DONTWAIT) != 0) 3252d1661a5SPawel Jakub Dawidek return (0); 3263650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 3272d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, ep); 3283650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 3292d1661a5SPawel Jakub Dawidek while ((ep->e_flags & G_RAID3_EVENT_DONE) == 0) { 3302d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3312d1661a5SPawel Jakub Dawidek MSLEEP(ep, &sc->sc_events_mtx, PRIBIO | PDROP, "r3:event", 3322d1661a5SPawel Jakub Dawidek hz * 5); 3332d1661a5SPawel Jakub Dawidek } 3342d1661a5SPawel Jakub Dawidek error = ep->e_error; 3352d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 3363650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3372d1661a5SPawel Jakub Dawidek return (error); 3382d1661a5SPawel Jakub Dawidek } 3392d1661a5SPawel Jakub Dawidek 3402d1661a5SPawel Jakub Dawidek static struct g_raid3_event * 3412d1661a5SPawel Jakub Dawidek g_raid3_event_get(struct g_raid3_softc *sc) 3422d1661a5SPawel Jakub Dawidek { 3432d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 3442d1661a5SPawel Jakub Dawidek 3452d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3462d1661a5SPawel Jakub Dawidek ep = TAILQ_FIRST(&sc->sc_events); 3472d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3482d1661a5SPawel Jakub Dawidek return (ep); 3492d1661a5SPawel Jakub Dawidek } 3502d1661a5SPawel Jakub Dawidek 3512d1661a5SPawel Jakub Dawidek static void 352d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(struct g_raid3_softc *sc, struct g_raid3_event *ep) 353d97d5ee9SPawel Jakub Dawidek { 354d97d5ee9SPawel Jakub Dawidek 355d97d5ee9SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 356d97d5ee9SPawel Jakub Dawidek TAILQ_REMOVE(&sc->sc_events, ep, e_next); 357d97d5ee9SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 358d97d5ee9SPawel Jakub Dawidek } 359d97d5ee9SPawel Jakub Dawidek 360d97d5ee9SPawel Jakub Dawidek static void 3612d1661a5SPawel Jakub Dawidek g_raid3_event_cancel(struct g_raid3_disk *disk) 3622d1661a5SPawel Jakub Dawidek { 3632d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 3642d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep, *tmpep; 3652d1661a5SPawel Jakub Dawidek 3662d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 3673650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 3683650be51SPawel Jakub Dawidek 3692d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3702d1661a5SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(ep, &sc->sc_events, e_next, tmpep) { 3712d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) 3722d1661a5SPawel Jakub Dawidek continue; 3732d1661a5SPawel Jakub Dawidek if (ep->e_disk != disk) 3742d1661a5SPawel Jakub Dawidek continue; 3752d1661a5SPawel Jakub Dawidek TAILQ_REMOVE(&sc->sc_events, ep, e_next); 3762d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) 3772d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 3782d1661a5SPawel Jakub Dawidek else { 3792d1661a5SPawel Jakub Dawidek ep->e_error = ECANCELED; 3802d1661a5SPawel Jakub Dawidek wakeup(ep); 3812d1661a5SPawel Jakub Dawidek } 3822d1661a5SPawel Jakub Dawidek } 3832d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3842d1661a5SPawel Jakub Dawidek } 3852d1661a5SPawel Jakub Dawidek 3862d1661a5SPawel Jakub Dawidek /* 3872d1661a5SPawel Jakub Dawidek * Return the number of disks in the given state. 3882d1661a5SPawel Jakub Dawidek * If state is equal to -1, count all connected disks. 3892d1661a5SPawel Jakub Dawidek */ 3902d1661a5SPawel Jakub Dawidek u_int 3912d1661a5SPawel Jakub Dawidek g_raid3_ndisks(struct g_raid3_softc *sc, int state) 3922d1661a5SPawel Jakub Dawidek { 3932d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 394fa6a7837SDavid E. O'Brien u_int n, ndisks; 3952d1661a5SPawel Jakub Dawidek 3963650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 3973650be51SPawel Jakub Dawidek 398fa6a7837SDavid E. O'Brien for (n = ndisks = 0; n < sc->sc_ndisks; n++) { 3992d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 4002d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 4012d1661a5SPawel Jakub Dawidek continue; 4022d1661a5SPawel Jakub Dawidek if (state == -1 || disk->d_state == state) 4032d1661a5SPawel Jakub Dawidek ndisks++; 4042d1661a5SPawel Jakub Dawidek } 4052d1661a5SPawel Jakub Dawidek return (ndisks); 4062d1661a5SPawel Jakub Dawidek } 4072d1661a5SPawel Jakub Dawidek 4082d1661a5SPawel Jakub Dawidek static u_int 4092d1661a5SPawel Jakub Dawidek g_raid3_nrequests(struct g_raid3_softc *sc, struct g_consumer *cp) 4102d1661a5SPawel Jakub Dawidek { 4112d1661a5SPawel Jakub Dawidek struct bio *bp; 4122d1661a5SPawel Jakub Dawidek u_int nreqs = 0; 4132d1661a5SPawel Jakub Dawidek 4142d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 4152d1661a5SPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 4162d1661a5SPawel Jakub Dawidek if (bp->bio_from == cp) 4172d1661a5SPawel Jakub Dawidek nreqs++; 4182d1661a5SPawel Jakub Dawidek } 4192d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 4202d1661a5SPawel Jakub Dawidek return (nreqs); 4212d1661a5SPawel Jakub Dawidek } 4222d1661a5SPawel Jakub Dawidek 4232d1661a5SPawel Jakub Dawidek static int 4242d1661a5SPawel Jakub Dawidek g_raid3_is_busy(struct g_raid3_softc *sc, struct g_consumer *cp) 4252d1661a5SPawel Jakub Dawidek { 4262d1661a5SPawel Jakub Dawidek 42779e61493SPawel Jakub Dawidek if (cp->index > 0) { 4282d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, 4292d1661a5SPawel Jakub Dawidek "I/O requests for %s exist, can't destroy it now.", 4302d1661a5SPawel Jakub Dawidek cp->provider->name); 4312d1661a5SPawel Jakub Dawidek return (1); 4322d1661a5SPawel Jakub Dawidek } 4332d1661a5SPawel Jakub Dawidek if (g_raid3_nrequests(sc, cp) > 0) { 4342d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, 4352d1661a5SPawel Jakub Dawidek "I/O requests for %s in queue, can't destroy it now.", 4362d1661a5SPawel Jakub Dawidek cp->provider->name); 4372d1661a5SPawel Jakub Dawidek return (1); 4382d1661a5SPawel Jakub Dawidek } 4392d1661a5SPawel Jakub Dawidek return (0); 4402d1661a5SPawel Jakub Dawidek } 4412d1661a5SPawel Jakub Dawidek 4422d1661a5SPawel Jakub Dawidek static void 443d97d5ee9SPawel Jakub Dawidek g_raid3_destroy_consumer(void *arg, int flags __unused) 444d97d5ee9SPawel Jakub Dawidek { 445d97d5ee9SPawel Jakub Dawidek struct g_consumer *cp; 446d97d5ee9SPawel Jakub Dawidek 4473650be51SPawel Jakub Dawidek g_topology_assert(); 4483650be51SPawel Jakub Dawidek 449d97d5ee9SPawel Jakub Dawidek cp = arg; 450d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Consumer %s destroyed.", cp->provider->name); 451d97d5ee9SPawel Jakub Dawidek g_detach(cp); 452d97d5ee9SPawel Jakub Dawidek g_destroy_consumer(cp); 453d97d5ee9SPawel Jakub Dawidek } 454d97d5ee9SPawel Jakub Dawidek 455d97d5ee9SPawel Jakub Dawidek static void 4562d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(struct g_raid3_softc *sc, struct g_consumer *cp) 4572d1661a5SPawel Jakub Dawidek { 458d97d5ee9SPawel Jakub Dawidek struct g_provider *pp; 459d97d5ee9SPawel Jakub Dawidek int retaste_wait; 4602d1661a5SPawel Jakub Dawidek 4612d1661a5SPawel Jakub Dawidek g_topology_assert(); 4622d1661a5SPawel Jakub Dawidek 4632d1661a5SPawel Jakub Dawidek cp->private = NULL; 4642d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 4652d1661a5SPawel Jakub Dawidek return; 4662d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Consumer %s destroyed.", cp->provider->name); 467d97d5ee9SPawel Jakub Dawidek pp = cp->provider; 468d97d5ee9SPawel Jakub Dawidek retaste_wait = 0; 469d97d5ee9SPawel Jakub Dawidek if (cp->acw == 1) { 470d97d5ee9SPawel Jakub Dawidek if ((pp->geom->flags & G_GEOM_WITHER) == 0) 471d97d5ee9SPawel Jakub Dawidek retaste_wait = 1; 472d97d5ee9SPawel Jakub Dawidek } 473d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access %s r%dw%de%d = %d", pp->name, -cp->acr, 474d97d5ee9SPawel Jakub Dawidek -cp->acw, -cp->ace, 0); 475d97d5ee9SPawel Jakub Dawidek if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0) 476d97d5ee9SPawel Jakub Dawidek g_access(cp, -cp->acr, -cp->acw, -cp->ace); 477d97d5ee9SPawel Jakub Dawidek if (retaste_wait) { 478d97d5ee9SPawel Jakub Dawidek /* 479d97d5ee9SPawel Jakub Dawidek * After retaste event was send (inside g_access()), we can send 480d97d5ee9SPawel Jakub Dawidek * event to detach and destroy consumer. 481d97d5ee9SPawel Jakub Dawidek * A class, which has consumer to the given provider connected 482d97d5ee9SPawel Jakub Dawidek * will not receive retaste event for the provider. 483d97d5ee9SPawel Jakub Dawidek * This is the way how I ignore retaste events when I close 484d97d5ee9SPawel Jakub Dawidek * consumers opened for write: I detach and destroy consumer 485d97d5ee9SPawel Jakub Dawidek * after retaste event is sent. 486d97d5ee9SPawel Jakub Dawidek */ 487d97d5ee9SPawel Jakub Dawidek g_post_event(g_raid3_destroy_consumer, cp, M_WAITOK, NULL); 488d97d5ee9SPawel Jakub Dawidek return; 489d97d5ee9SPawel Jakub Dawidek } 490d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Consumer %s destroyed.", pp->name); 4912d1661a5SPawel Jakub Dawidek g_detach(cp); 4922d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 4932d1661a5SPawel Jakub Dawidek } 4942d1661a5SPawel Jakub Dawidek 4952d1661a5SPawel Jakub Dawidek static int 4962d1661a5SPawel Jakub Dawidek g_raid3_connect_disk(struct g_raid3_disk *disk, struct g_provider *pp) 4972d1661a5SPawel Jakub Dawidek { 49834cb1517SPawel Jakub Dawidek struct g_consumer *cp; 4992d1661a5SPawel Jakub Dawidek int error; 5002d1661a5SPawel Jakub Dawidek 5013650be51SPawel Jakub Dawidek g_topology_assert_not(); 5022d1661a5SPawel Jakub Dawidek KASSERT(disk->d_consumer == NULL, 5032d1661a5SPawel Jakub Dawidek ("Disk already connected (device %s).", disk->d_softc->sc_name)); 5042d1661a5SPawel Jakub Dawidek 5053650be51SPawel Jakub Dawidek g_topology_lock(); 50634cb1517SPawel Jakub Dawidek cp = g_new_consumer(disk->d_softc->sc_geom); 50734cb1517SPawel Jakub Dawidek error = g_attach(cp, pp); 508d97d5ee9SPawel Jakub Dawidek if (error != 0) { 50934cb1517SPawel Jakub Dawidek g_destroy_consumer(cp); 5103650be51SPawel Jakub Dawidek g_topology_unlock(); 51134cb1517SPawel Jakub Dawidek return (error); 51234cb1517SPawel Jakub Dawidek } 51334cb1517SPawel Jakub Dawidek error = g_access(cp, 1, 1, 1); 5143650be51SPawel Jakub Dawidek g_topology_unlock(); 51534cb1517SPawel Jakub Dawidek if (error != 0) { 51634cb1517SPawel Jakub Dawidek g_detach(cp); 51734cb1517SPawel Jakub Dawidek g_destroy_consumer(cp); 518d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot open consumer %s (error=%d).", 519d97d5ee9SPawel Jakub Dawidek pp->name, error); 520d97d5ee9SPawel Jakub Dawidek return (error); 521d97d5ee9SPawel Jakub Dawidek } 52234cb1517SPawel Jakub Dawidek disk->d_consumer = cp; 52334cb1517SPawel Jakub Dawidek disk->d_consumer->private = disk; 52434cb1517SPawel Jakub Dawidek disk->d_consumer->index = 0; 5252d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Disk %s connected.", g_raid3_get_diskname(disk)); 5262d1661a5SPawel Jakub Dawidek return (0); 5272d1661a5SPawel Jakub Dawidek } 5282d1661a5SPawel Jakub Dawidek 5292d1661a5SPawel Jakub Dawidek static void 5302d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(struct g_raid3_softc *sc, struct g_consumer *cp) 5312d1661a5SPawel Jakub Dawidek { 5322d1661a5SPawel Jakub Dawidek 5332d1661a5SPawel Jakub Dawidek g_topology_assert(); 5342d1661a5SPawel Jakub Dawidek 5352d1661a5SPawel Jakub Dawidek if (cp == NULL) 5362d1661a5SPawel Jakub Dawidek return; 537d97d5ee9SPawel Jakub Dawidek if (cp->provider != NULL) 5382d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cp); 539d97d5ee9SPawel Jakub Dawidek else 5402d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 5412d1661a5SPawel Jakub Dawidek } 5422d1661a5SPawel Jakub Dawidek 5432d1661a5SPawel Jakub Dawidek /* 5442d1661a5SPawel Jakub Dawidek * Initialize disk. This means allocate memory, create consumer, attach it 5452d1661a5SPawel Jakub Dawidek * to the provider and open access (r1w1e1) to it. 5462d1661a5SPawel Jakub Dawidek */ 5472d1661a5SPawel Jakub Dawidek static struct g_raid3_disk * 5482d1661a5SPawel Jakub Dawidek g_raid3_init_disk(struct g_raid3_softc *sc, struct g_provider *pp, 5492d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md, int *errorp) 5502d1661a5SPawel Jakub Dawidek { 5512d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 5522d1661a5SPawel Jakub Dawidek int error; 5532d1661a5SPawel Jakub Dawidek 5542d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[md->md_no]; 5552d1661a5SPawel Jakub Dawidek error = g_raid3_connect_disk(disk, pp); 55634cb1517SPawel Jakub Dawidek if (error != 0) { 55734cb1517SPawel Jakub Dawidek if (errorp != NULL) 55834cb1517SPawel Jakub Dawidek *errorp = error; 55934cb1517SPawel Jakub Dawidek return (NULL); 56034cb1517SPawel Jakub Dawidek } 5612d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NONE; 5622d1661a5SPawel Jakub Dawidek disk->d_flags = md->md_dflags; 5632d1661a5SPawel Jakub Dawidek if (md->md_provider[0] != '\0') 5642d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_HARDCODED; 5652d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 5662d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = md->md_sync_offset; 5672d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = md->md_sync_offset; 568a245a548SPawel Jakub Dawidek disk->d_genid = md->md_genid; 5692d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = md->md_syncid; 5702d1661a5SPawel Jakub Dawidek if (errorp != NULL) 5712d1661a5SPawel Jakub Dawidek *errorp = 0; 5722d1661a5SPawel Jakub Dawidek return (disk); 5732d1661a5SPawel Jakub Dawidek } 5742d1661a5SPawel Jakub Dawidek 5752d1661a5SPawel Jakub Dawidek static void 5762d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(struct g_raid3_disk *disk) 5772d1661a5SPawel Jakub Dawidek { 5782d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 5792d1661a5SPawel Jakub Dawidek 5803650be51SPawel Jakub Dawidek g_topology_assert_not(); 5813650be51SPawel Jakub Dawidek sc = disk->d_softc; 5823650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 5832d1661a5SPawel Jakub Dawidek 5842d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 5852d1661a5SPawel Jakub Dawidek return; 5862d1661a5SPawel Jakub Dawidek g_raid3_event_cancel(disk); 5872d1661a5SPawel Jakub Dawidek switch (disk->d_state) { 5882d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 5892d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 5902d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 5912d1661a5SPawel Jakub Dawidek /* FALLTHROUGH */ 5922d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 5932d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 5942d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 5953650be51SPawel Jakub Dawidek g_topology_lock(); 5962d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, disk->d_consumer); 5973650be51SPawel Jakub Dawidek g_topology_unlock(); 5982d1661a5SPawel Jakub Dawidek disk->d_consumer = NULL; 5992d1661a5SPawel Jakub Dawidek break; 6002d1661a5SPawel Jakub Dawidek default: 6012d1661a5SPawel Jakub Dawidek KASSERT(0 == 1, ("Wrong disk state (%s, %s).", 6022d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 6032d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 6042d1661a5SPawel Jakub Dawidek } 6052d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NODISK; 6062d1661a5SPawel Jakub Dawidek } 6072d1661a5SPawel Jakub Dawidek 6082d1661a5SPawel Jakub Dawidek static void 6092d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(struct g_raid3_softc *sc) 6102d1661a5SPawel Jakub Dawidek { 6112d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 6129da3072cSPawel Jakub Dawidek struct g_raid3_disk *disk; 6132d1661a5SPawel Jakub Dawidek struct g_geom *gp; 6142d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 6152d1661a5SPawel Jakub Dawidek u_int n; 6162d1661a5SPawel Jakub Dawidek 6173650be51SPawel Jakub Dawidek g_topology_assert_not(); 6183650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 6192d1661a5SPawel Jakub Dawidek 6202d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 6212d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 6222d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 6239da3072cSPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 6249da3072cSPawel Jakub Dawidek disk = &sc->sc_disks[n]; 625d97d5ee9SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_NODISK) { 6269da3072cSPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 6279da3072cSPawel Jakub Dawidek g_raid3_update_metadata(disk); 6289da3072cSPawel Jakub Dawidek g_raid3_destroy_disk(disk); 6299da3072cSPawel Jakub Dawidek } 630d97d5ee9SPawel Jakub Dawidek } 6312d1661a5SPawel Jakub Dawidek while ((ep = g_raid3_event_get(sc)) != NULL) { 632d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 6332d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) 6342d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 6352d1661a5SPawel Jakub Dawidek else { 6362d1661a5SPawel Jakub Dawidek ep->e_error = ECANCELED; 6372d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 6382d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, ep); 6392d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 6402d1661a5SPawel Jakub Dawidek wakeup(ep); 6412d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 6422d1661a5SPawel Jakub Dawidek } 6432d1661a5SPawel Jakub Dawidek } 6442d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 6452d1661a5SPawel Jakub Dawidek cp = LIST_FIRST(&sc->sc_sync.ds_geom->consumer); 6463650be51SPawel Jakub Dawidek g_topology_lock(); 6472d1661a5SPawel Jakub Dawidek if (cp != NULL) 6482d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, cp); 6492d1661a5SPawel Jakub Dawidek g_wither_geom(sc->sc_sync.ds_geom, ENXIO); 6502d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s destroyed.", gp->name); 6512d1661a5SPawel Jakub Dawidek g_wither_geom(gp, ENXIO); 6523650be51SPawel Jakub Dawidek g_topology_unlock(); 653ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 6543650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_64K].sz_zone); 6553650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_16K].sz_zone); 6563650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_4K].sz_zone); 657ed940a82SPawel Jakub Dawidek } 6583650be51SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 6593650be51SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 6603650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 6613650be51SPawel Jakub Dawidek sx_destroy(&sc->sc_lock); 6622d1661a5SPawel Jakub Dawidek } 6632d1661a5SPawel Jakub Dawidek 6642d1661a5SPawel Jakub Dawidek static void 6652d1661a5SPawel Jakub Dawidek g_raid3_orphan(struct g_consumer *cp) 6662d1661a5SPawel Jakub Dawidek { 6672d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 6682d1661a5SPawel Jakub Dawidek 6692d1661a5SPawel Jakub Dawidek g_topology_assert(); 6702d1661a5SPawel Jakub Dawidek 6712d1661a5SPawel Jakub Dawidek disk = cp->private; 6722d1661a5SPawel Jakub Dawidek if (disk == NULL) 6732d1661a5SPawel Jakub Dawidek return; 674ea973705SPawel Jakub Dawidek disk->d_softc->sc_bump_id = G_RAID3_BUMP_SYNCID; 6752d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_DISCONNECTED, 6762d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 6772d1661a5SPawel Jakub Dawidek } 6782d1661a5SPawel Jakub Dawidek 6792d1661a5SPawel Jakub Dawidek static int 6802d1661a5SPawel Jakub Dawidek g_raid3_write_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 6812d1661a5SPawel Jakub Dawidek { 6822d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 6832d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 6842d1661a5SPawel Jakub Dawidek off_t offset, length; 6852d1661a5SPawel Jakub Dawidek u_char *sector; 686d97d5ee9SPawel Jakub Dawidek int error = 0; 6872d1661a5SPawel Jakub Dawidek 6883650be51SPawel Jakub Dawidek g_topology_assert_not(); 6892d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 6903650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 6913650be51SPawel Jakub Dawidek 6922d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 6932d1661a5SPawel Jakub Dawidek KASSERT(cp != NULL, ("NULL consumer (%s).", sc->sc_name)); 6942d1661a5SPawel Jakub Dawidek KASSERT(cp->provider != NULL, ("NULL provider (%s).", sc->sc_name)); 6953650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 696d97d5ee9SPawel Jakub Dawidek ("Consumer %s closed? (r%dw%de%d).", cp->provider->name, cp->acr, 697d97d5ee9SPawel Jakub Dawidek cp->acw, cp->ace)); 6982d1661a5SPawel Jakub Dawidek length = cp->provider->sectorsize; 6992d1661a5SPawel Jakub Dawidek offset = cp->provider->mediasize - length; 7002d1661a5SPawel Jakub Dawidek sector = malloc((size_t)length, M_RAID3, M_WAITOK | M_ZERO); 7012d1661a5SPawel Jakub Dawidek if (md != NULL) 7022d1661a5SPawel Jakub Dawidek raid3_metadata_encode(md, sector); 7032d1661a5SPawel Jakub Dawidek error = g_write_data(cp, offset, sector, length); 7042d1661a5SPawel Jakub Dawidek free(sector, M_RAID3); 7052d1661a5SPawel Jakub Dawidek if (error != 0) { 7063aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 7073aae74ecSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot write metadata on %s " 7083aae74ecSPawel Jakub Dawidek "(device=%s, error=%d).", 7093aae74ecSPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name, error); 7103aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 7113aae74ecSPawel Jakub Dawidek } else { 7123aae74ecSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot write metadata on %s " 7133aae74ecSPawel Jakub Dawidek "(device=%s, error=%d).", 7143aae74ecSPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name, error); 7153aae74ecSPawel Jakub Dawidek } 7163aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 7173aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 7183aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 7193aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 7203aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 7212d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 7222d1661a5SPawel Jakub Dawidek } 7233aae74ecSPawel Jakub Dawidek } 7242d1661a5SPawel Jakub Dawidek return (error); 7252d1661a5SPawel Jakub Dawidek } 7262d1661a5SPawel Jakub Dawidek 7272d1661a5SPawel Jakub Dawidek int 7282d1661a5SPawel Jakub Dawidek g_raid3_clear_metadata(struct g_raid3_disk *disk) 7292d1661a5SPawel Jakub Dawidek { 7302d1661a5SPawel Jakub Dawidek int error; 7312d1661a5SPawel Jakub Dawidek 7323650be51SPawel Jakub Dawidek g_topology_assert_not(); 7333650be51SPawel Jakub Dawidek sx_assert(&disk->d_softc->sc_lock, SX_LOCKED); 7343650be51SPawel Jakub Dawidek 7352d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, NULL); 7362d1661a5SPawel Jakub Dawidek if (error == 0) { 7372d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s cleared.", 7382d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 7392d1661a5SPawel Jakub Dawidek } else { 7402d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 7412d1661a5SPawel Jakub Dawidek "Cannot clear metadata on disk %s (error=%d).", 7422d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 7432d1661a5SPawel Jakub Dawidek } 7442d1661a5SPawel Jakub Dawidek return (error); 7452d1661a5SPawel Jakub Dawidek } 7462d1661a5SPawel Jakub Dawidek 7472d1661a5SPawel Jakub Dawidek void 7482d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 7492d1661a5SPawel Jakub Dawidek { 7502d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 751e6890985SPawel Jakub Dawidek struct g_provider *pp; 7522d1661a5SPawel Jakub Dawidek 7532d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 7542d1661a5SPawel Jakub Dawidek strlcpy(md->md_magic, G_RAID3_MAGIC, sizeof(md->md_magic)); 7552d1661a5SPawel Jakub Dawidek md->md_version = G_RAID3_VERSION; 7562d1661a5SPawel Jakub Dawidek strlcpy(md->md_name, sc->sc_name, sizeof(md->md_name)); 7572d1661a5SPawel Jakub Dawidek md->md_id = sc->sc_id; 7582d1661a5SPawel Jakub Dawidek md->md_all = sc->sc_ndisks; 759a245a548SPawel Jakub Dawidek md->md_genid = sc->sc_genid; 7602d1661a5SPawel Jakub Dawidek md->md_mediasize = sc->sc_mediasize; 7612d1661a5SPawel Jakub Dawidek md->md_sectorsize = sc->sc_sectorsize; 7622d1661a5SPawel Jakub Dawidek md->md_mflags = (sc->sc_flags & G_RAID3_DEVICE_FLAG_MASK); 7632d1661a5SPawel Jakub Dawidek md->md_no = disk->d_no; 7642d1661a5SPawel Jakub Dawidek md->md_syncid = disk->d_sync.ds_syncid; 7652d1661a5SPawel Jakub Dawidek md->md_dflags = (disk->d_flags & G_RAID3_DISK_FLAG_MASK); 766c082905bSPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_SYNCHRONIZING) 7672d1661a5SPawel Jakub Dawidek md->md_sync_offset = 0; 768c082905bSPawel Jakub Dawidek else { 769c082905bSPawel Jakub Dawidek md->md_sync_offset = 770c082905bSPawel Jakub Dawidek disk->d_sync.ds_offset_done / (sc->sc_ndisks - 1); 771c082905bSPawel Jakub Dawidek } 772e6890985SPawel Jakub Dawidek if (disk->d_consumer != NULL && disk->d_consumer->provider != NULL) 773e6890985SPawel Jakub Dawidek pp = disk->d_consumer->provider; 774e6890985SPawel Jakub Dawidek else 775e6890985SPawel Jakub Dawidek pp = NULL; 776e6890985SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_HARDCODED) != 0 && pp != NULL) 777e6890985SPawel Jakub Dawidek strlcpy(md->md_provider, pp->name, sizeof(md->md_provider)); 778e6890985SPawel Jakub Dawidek else 7792d1661a5SPawel Jakub Dawidek bzero(md->md_provider, sizeof(md->md_provider)); 780e6890985SPawel Jakub Dawidek if (pp != NULL) 781e6890985SPawel Jakub Dawidek md->md_provsize = pp->mediasize; 782e6890985SPawel Jakub Dawidek else 783e6890985SPawel Jakub Dawidek md->md_provsize = 0; 7842d1661a5SPawel Jakub Dawidek } 7852d1661a5SPawel Jakub Dawidek 7862d1661a5SPawel Jakub Dawidek void 7872d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(struct g_raid3_disk *disk) 7882d1661a5SPawel Jakub Dawidek { 7893650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 7902d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 7912d1661a5SPawel Jakub Dawidek int error; 7922d1661a5SPawel Jakub Dawidek 7933650be51SPawel Jakub Dawidek g_topology_assert_not(); 7943650be51SPawel Jakub Dawidek sc = disk->d_softc; 7953650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 7963650be51SPawel Jakub Dawidek 7972d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(disk, &md); 7982d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, &md); 7992d1661a5SPawel Jakub Dawidek if (error == 0) { 8002d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s updated.", 8012d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 8022d1661a5SPawel Jakub Dawidek } else { 8032d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 8042d1661a5SPawel Jakub Dawidek "Cannot update metadata on disk %s (error=%d).", 8052d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 8062d1661a5SPawel Jakub Dawidek } 8072d1661a5SPawel Jakub Dawidek } 8082d1661a5SPawel Jakub Dawidek 8092d1661a5SPawel Jakub Dawidek static void 810d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(struct g_raid3_softc *sc) 8112d1661a5SPawel Jakub Dawidek { 8122d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 8132d1661a5SPawel Jakub Dawidek u_int n; 8142d1661a5SPawel Jakub Dawidek 8153650be51SPawel Jakub Dawidek g_topology_assert_not(); 8163650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 8172d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 8182d1661a5SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 8192d1661a5SPawel Jakub Dawidek sc->sc_name)); 8202d1661a5SPawel Jakub Dawidek 8212d1661a5SPawel Jakub Dawidek sc->sc_syncid++; 822a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: syncid bumped to %u.", sc->sc_name, 823a245a548SPawel Jakub Dawidek sc->sc_syncid); 8242d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 8252d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 8262d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 8272d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 8282d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 8292d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 8302d1661a5SPawel Jakub Dawidek } 8312d1661a5SPawel Jakub Dawidek } 8322d1661a5SPawel Jakub Dawidek } 8332d1661a5SPawel Jakub Dawidek 8344d006a98SPawel Jakub Dawidek static void 835a245a548SPawel Jakub Dawidek g_raid3_bump_genid(struct g_raid3_softc *sc) 836a245a548SPawel Jakub Dawidek { 837a245a548SPawel Jakub Dawidek struct g_raid3_disk *disk; 838a245a548SPawel Jakub Dawidek u_int n; 839a245a548SPawel Jakub Dawidek 8403650be51SPawel Jakub Dawidek g_topology_assert_not(); 8413650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 842a245a548SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 843a245a548SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 844a245a548SPawel Jakub Dawidek sc->sc_name)); 845a245a548SPawel Jakub Dawidek 846a245a548SPawel Jakub Dawidek sc->sc_genid++; 847a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: genid bumped to %u.", sc->sc_name, 848a245a548SPawel Jakub Dawidek sc->sc_genid); 849a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 850a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 851a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 852a245a548SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 853a245a548SPawel Jakub Dawidek disk->d_genid = sc->sc_genid; 854a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 855a245a548SPawel Jakub Dawidek } 856a245a548SPawel Jakub Dawidek } 857a245a548SPawel Jakub Dawidek } 858a245a548SPawel Jakub Dawidek 8590962f942SPawel Jakub Dawidek static int 8603650be51SPawel Jakub Dawidek g_raid3_idle(struct g_raid3_softc *sc, int acw) 8614d006a98SPawel Jakub Dawidek { 8624d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 8634d006a98SPawel Jakub Dawidek u_int i; 8640962f942SPawel Jakub Dawidek int timeout; 8654d006a98SPawel Jakub Dawidek 8663650be51SPawel Jakub Dawidek g_topology_assert_not(); 8673650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 8683650be51SPawel Jakub Dawidek 8690962f942SPawel Jakub Dawidek if (sc->sc_provider == NULL) 8700962f942SPawel Jakub Dawidek return (0); 871501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0) 872501250baSPawel Jakub Dawidek return (0); 8730962f942SPawel Jakub Dawidek if (sc->sc_idle) 8740962f942SPawel Jakub Dawidek return (0); 8750962f942SPawel Jakub Dawidek if (sc->sc_writes > 0) 8760962f942SPawel Jakub Dawidek return (0); 8773650be51SPawel Jakub Dawidek if (acw > 0 || (acw == -1 && sc->sc_provider->acw > 0)) { 87801f1f41cSPawel Jakub Dawidek timeout = g_raid3_idletime - (time_uptime - sc->sc_last_write); 8790962f942SPawel Jakub Dawidek if (timeout > 0) 8800962f942SPawel Jakub Dawidek return (timeout); 8810962f942SPawel Jakub Dawidek } 8824d006a98SPawel Jakub Dawidek sc->sc_idle = 1; 8834d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 8844d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 8854d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 8864d006a98SPawel Jakub Dawidek continue; 8874d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 8884d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 8894d006a98SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 8904d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 8914d006a98SPawel Jakub Dawidek } 8920962f942SPawel Jakub Dawidek return (0); 8934d006a98SPawel Jakub Dawidek } 8944d006a98SPawel Jakub Dawidek 8954d006a98SPawel Jakub Dawidek static void 8964d006a98SPawel Jakub Dawidek g_raid3_unidle(struct g_raid3_softc *sc) 8974d006a98SPawel Jakub Dawidek { 8984d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 8994d006a98SPawel Jakub Dawidek u_int i; 9004d006a98SPawel Jakub Dawidek 9013650be51SPawel Jakub Dawidek g_topology_assert_not(); 9023650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 9033650be51SPawel Jakub Dawidek 904501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0) 905501250baSPawel Jakub Dawidek return; 9064d006a98SPawel Jakub Dawidek sc->sc_idle = 0; 90701f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 9084d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 9094d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 9104d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 9114d006a98SPawel Jakub Dawidek continue; 9124d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 9134d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 9144d006a98SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 9154d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 9164d006a98SPawel Jakub Dawidek } 9174d006a98SPawel Jakub Dawidek } 9184d006a98SPawel Jakub Dawidek 9192d1661a5SPawel Jakub Dawidek /* 9202d1661a5SPawel Jakub Dawidek * Treat bio_driver1 field in parent bio as list head and field bio_caller1 9212d1661a5SPawel Jakub Dawidek * in child bio as pointer to the next element on the list. 9222d1661a5SPawel Jakub Dawidek */ 9232d1661a5SPawel Jakub Dawidek #define G_RAID3_HEAD_BIO(pbp) (pbp)->bio_driver1 9242d1661a5SPawel Jakub Dawidek 9252d1661a5SPawel Jakub Dawidek #define G_RAID3_NEXT_BIO(cbp) (cbp)->bio_caller1 9262d1661a5SPawel Jakub Dawidek 9272d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_BIO(pbp, bp) \ 9282d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); (bp) != NULL; \ 9292d1661a5SPawel Jakub Dawidek (bp) = G_RAID3_NEXT_BIO(bp)) 9302d1661a5SPawel Jakub Dawidek 9312d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_SAFE_BIO(pbp, bp, tmpbp) \ 9322d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); \ 9332d1661a5SPawel Jakub Dawidek (bp) != NULL && ((tmpbp) = G_RAID3_NEXT_BIO(bp), 1); \ 9342d1661a5SPawel Jakub Dawidek (bp) = (tmpbp)) 9352d1661a5SPawel Jakub Dawidek 9362d1661a5SPawel Jakub Dawidek static void 9372d1661a5SPawel Jakub Dawidek g_raid3_init_bio(struct bio *pbp) 9382d1661a5SPawel Jakub Dawidek { 9392d1661a5SPawel Jakub Dawidek 9402d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = NULL; 9412d1661a5SPawel Jakub Dawidek } 9422d1661a5SPawel Jakub Dawidek 9432d1661a5SPawel Jakub Dawidek static void 944dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(struct bio *cbp) 945dba915cfSPawel Jakub Dawidek { 946dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 947dba915cfSPawel Jakub Dawidek 948dba915cfSPawel Jakub Dawidek pbp = cbp->bio_parent; 949dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) 950dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 951dba915cfSPawel Jakub Dawidek else { 952dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 953dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) { 954dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 955dba915cfSPawel Jakub Dawidek break; 956dba915cfSPawel Jakub Dawidek } 957dba915cfSPawel Jakub Dawidek } 958dba915cfSPawel Jakub Dawidek } 959dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 960dba915cfSPawel Jakub Dawidek } 961dba915cfSPawel Jakub Dawidek 962dba915cfSPawel Jakub Dawidek static void 963dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(struct bio *sbp, struct bio *dbp) 964dba915cfSPawel Jakub Dawidek { 965dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 966dba915cfSPawel Jakub Dawidek 967dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(sbp); 968dba915cfSPawel Jakub Dawidek pbp = dbp->bio_parent; 969dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(sbp) = G_RAID3_NEXT_BIO(dbp); 970dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == dbp) 971dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = sbp; 972dba915cfSPawel Jakub Dawidek else { 973dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 974dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == dbp) { 975dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = sbp; 976dba915cfSPawel Jakub Dawidek break; 977dba915cfSPawel Jakub Dawidek } 978dba915cfSPawel Jakub Dawidek } 979dba915cfSPawel Jakub Dawidek } 980dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(dbp) = NULL; 981dba915cfSPawel Jakub Dawidek } 982dba915cfSPawel Jakub Dawidek 983dba915cfSPawel Jakub Dawidek static void 9842d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(struct g_raid3_softc *sc, struct bio *cbp) 9852d1661a5SPawel Jakub Dawidek { 9862d1661a5SPawel Jakub Dawidek struct bio *bp, *pbp; 9872d1661a5SPawel Jakub Dawidek size_t size; 9882d1661a5SPawel Jakub Dawidek 9892d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 9902d1661a5SPawel Jakub Dawidek pbp->bio_children--; 9912d1661a5SPawel Jakub Dawidek KASSERT(cbp->bio_data != NULL, ("NULL bio_data")); 9922d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 993ed940a82SPawel Jakub Dawidek g_raid3_free(sc, cbp->bio_data, size); 9942d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) { 9952d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 9962d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 9972d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9982d1661a5SPawel Jakub Dawidek } else { 9992d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 10002d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) 10012d1661a5SPawel Jakub Dawidek break; 10022d1661a5SPawel Jakub Dawidek } 1003dba915cfSPawel Jakub Dawidek if (bp != NULL) { 1004dba915cfSPawel Jakub Dawidek KASSERT(G_RAID3_NEXT_BIO(bp) != NULL, 1005dba915cfSPawel Jakub Dawidek ("NULL bp->bio_driver1")); 10062d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 10072d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 1008dba915cfSPawel Jakub Dawidek } 10092d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 10102d1661a5SPawel Jakub Dawidek } 10112d1661a5SPawel Jakub Dawidek } 10122d1661a5SPawel Jakub Dawidek 10132d1661a5SPawel Jakub Dawidek static struct bio * 10142d1661a5SPawel Jakub Dawidek g_raid3_clone_bio(struct g_raid3_softc *sc, struct bio *pbp) 10152d1661a5SPawel Jakub Dawidek { 10162d1661a5SPawel Jakub Dawidek struct bio *bp, *cbp; 10172d1661a5SPawel Jakub Dawidek size_t size; 10183650be51SPawel Jakub Dawidek int memflag; 10192d1661a5SPawel Jakub Dawidek 10202d1661a5SPawel Jakub Dawidek cbp = g_clone_bio(pbp); 10212d1661a5SPawel Jakub Dawidek if (cbp == NULL) 10222d1661a5SPawel Jakub Dawidek return (NULL); 10232d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 10243650be51SPawel Jakub Dawidek if ((pbp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) != 0) 10253650be51SPawel Jakub Dawidek memflag = M_WAITOK; 10262d1661a5SPawel Jakub Dawidek else 10273650be51SPawel Jakub Dawidek memflag = M_NOWAIT; 1028ed940a82SPawel Jakub Dawidek cbp->bio_data = g_raid3_alloc(sc, size, memflag); 10293650be51SPawel Jakub Dawidek if (cbp->bio_data == NULL) { 10302d1661a5SPawel Jakub Dawidek pbp->bio_children--; 10312d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 10322d1661a5SPawel Jakub Dawidek return (NULL); 10332d1661a5SPawel Jakub Dawidek } 10342d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 10352d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == NULL) 10362d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = cbp; 10372d1661a5SPawel Jakub Dawidek else { 10382d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 10392d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == NULL) { 10402d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = cbp; 10412d1661a5SPawel Jakub Dawidek break; 10422d1661a5SPawel Jakub Dawidek } 10432d1661a5SPawel Jakub Dawidek } 10442d1661a5SPawel Jakub Dawidek } 10452d1661a5SPawel Jakub Dawidek return (cbp); 10462d1661a5SPawel Jakub Dawidek } 10472d1661a5SPawel Jakub Dawidek 10482d1661a5SPawel Jakub Dawidek static void 10492d1661a5SPawel Jakub Dawidek g_raid3_scatter(struct bio *pbp) 10502d1661a5SPawel Jakub Dawidek { 10512d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 10522d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1053ee40c7aaSPawel Jakub Dawidek struct bio *bp, *cbp, *tmpbp; 10542d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 105506b215fdSAlexander Motin int first; 10562d1661a5SPawel Jakub Dawidek 10572d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 10582d1661a5SPawel Jakub Dawidek bp = NULL; 10592d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10602d1661a5SPawel Jakub Dawidek /* 10612d1661a5SPawel Jakub Dawidek * Find bio for which we should calculate data. 10622d1661a5SPawel Jakub Dawidek */ 10632d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10642d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 10652d1661a5SPawel Jakub Dawidek bp = cbp; 10662d1661a5SPawel Jakub Dawidek break; 10672d1661a5SPawel Jakub Dawidek } 10682d1661a5SPawel Jakub Dawidek } 10692d1661a5SPawel Jakub Dawidek KASSERT(bp != NULL, ("NULL parity bio.")); 10702d1661a5SPawel Jakub Dawidek } 10712d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 10722d1661a5SPawel Jakub Dawidek cadd = padd = 0; 10732d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 10742d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10752d1661a5SPawel Jakub Dawidek if (cbp == bp) 10762d1661a5SPawel Jakub Dawidek continue; 10772d1661a5SPawel Jakub Dawidek bcopy(pbp->bio_data + padd, cbp->bio_data + cadd, atom); 10782d1661a5SPawel Jakub Dawidek padd += atom; 10792d1661a5SPawel Jakub Dawidek } 10802d1661a5SPawel Jakub Dawidek cadd += atom; 10812d1661a5SPawel Jakub Dawidek } 10822d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10832d1661a5SPawel Jakub Dawidek /* 10842d1661a5SPawel Jakub Dawidek * Calculate parity. 10852d1661a5SPawel Jakub Dawidek */ 108606b215fdSAlexander Motin first = 1; 10872d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 10882d1661a5SPawel Jakub Dawidek if (cbp == bp) 10892d1661a5SPawel Jakub Dawidek continue; 109006b215fdSAlexander Motin if (first) { 109106b215fdSAlexander Motin bcopy(cbp->bio_data, bp->bio_data, 10922d1661a5SPawel Jakub Dawidek bp->bio_length); 109306b215fdSAlexander Motin first = 0; 109406b215fdSAlexander Motin } else { 109506b215fdSAlexander Motin g_raid3_xor(cbp->bio_data, bp->bio_data, 109606b215fdSAlexander Motin bp->bio_length); 109706b215fdSAlexander Motin } 10982d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_NODISK) != 0) 10992d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 11002d1661a5SPawel Jakub Dawidek } 11012d1661a5SPawel Jakub Dawidek } 1102ee40c7aaSPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 11032d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 11042d1661a5SPawel Jakub Dawidek 11052d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 11062d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 11072d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 11082d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 11093650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 1110d97d5ee9SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 1111d97d5ee9SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 111279e61493SPawel Jakub Dawidek cp->index++; 11130962f942SPawel Jakub Dawidek sc->sc_writes++; 11142d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 11152d1661a5SPawel Jakub Dawidek } 11162d1661a5SPawel Jakub Dawidek } 11172d1661a5SPawel Jakub Dawidek 11182d1661a5SPawel Jakub Dawidek static void 11192d1661a5SPawel Jakub Dawidek g_raid3_gather(struct bio *pbp) 11202d1661a5SPawel Jakub Dawidek { 11212d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 11222d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1123f5a2f7feSPawel Jakub Dawidek struct bio *xbp, *fbp, *cbp; 11242d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 11252d1661a5SPawel Jakub Dawidek 11262d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 11272d1661a5SPawel Jakub Dawidek /* 1128f5a2f7feSPawel Jakub Dawidek * Find bio for which we have to calculate data. 11292d1661a5SPawel Jakub Dawidek * While going through this path, check if all requests 11302d1661a5SPawel Jakub Dawidek * succeeded, if not, deny whole request. 1131f5a2f7feSPawel Jakub Dawidek * If we're in COMPLETE mode, we allow one request to fail, 1132f5a2f7feSPawel Jakub Dawidek * so if we find one, we're sending it to the parity consumer. 1133f5a2f7feSPawel Jakub Dawidek * If there are more failed requests, we deny whole request. 11342d1661a5SPawel Jakub Dawidek */ 1135f5a2f7feSPawel Jakub Dawidek xbp = fbp = NULL; 11362d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 11372d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 1138f5a2f7feSPawel Jakub Dawidek KASSERT(xbp == NULL, ("More than one parity bio.")); 1139f5a2f7feSPawel Jakub Dawidek xbp = cbp; 11402d1661a5SPawel Jakub Dawidek } 11412d1661a5SPawel Jakub Dawidek if (cbp->bio_error == 0) 11422d1661a5SPawel Jakub Dawidek continue; 11432d1661a5SPawel Jakub Dawidek /* 11442d1661a5SPawel Jakub Dawidek * Found failed request. 11452d1661a5SPawel Jakub Dawidek */ 1146f5a2f7feSPawel Jakub Dawidek if (fbp == NULL) { 1147f5a2f7feSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_DEGRADED) != 0) { 11482d1661a5SPawel Jakub Dawidek /* 1149f5a2f7feSPawel Jakub Dawidek * We are already in degraded mode, so we can't 1150f5a2f7feSPawel Jakub Dawidek * accept any failures. 11512d1661a5SPawel Jakub Dawidek */ 1152f5a2f7feSPawel Jakub Dawidek if (pbp->bio_error == 0) 115317fec17eSPawel Jakub Dawidek pbp->bio_error = cbp->bio_error; 11542d1661a5SPawel Jakub Dawidek } else { 1155f5a2f7feSPawel Jakub Dawidek fbp = cbp; 11562d1661a5SPawel Jakub Dawidek } 1157f5a2f7feSPawel Jakub Dawidek } else { 11582d1661a5SPawel Jakub Dawidek /* 11592d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 11602d1661a5SPawel Jakub Dawidek */ 11612d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 1162f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11632d1661a5SPawel Jakub Dawidek } 11643aae74ecSPawel Jakub Dawidek disk = cbp->bio_caller2; 11653aae74ecSPawel Jakub Dawidek if (disk == NULL) 11663aae74ecSPawel Jakub Dawidek continue; 11673aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 11683aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 11693aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, "Request failed (error=%d).", 11703aae74ecSPawel Jakub Dawidek cbp->bio_error); 11713aae74ecSPawel Jakub Dawidek } else { 11723aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(1, cbp, "Request failed (error=%d).", 11733aae74ecSPawel Jakub Dawidek cbp->bio_error); 11743aae74ecSPawel Jakub Dawidek } 11753aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 11763aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 11773aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 11783aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 11793aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 11803aae74ecSPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 11813aae74ecSPawel Jakub Dawidek } 11822d1661a5SPawel Jakub Dawidek } 11832d1661a5SPawel Jakub Dawidek if (pbp->bio_error != 0) 11842d1661a5SPawel Jakub Dawidek goto finish; 1185dba915cfSPawel Jakub Dawidek if (fbp != NULL && (pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1186dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_VERIFY; 1187dba915cfSPawel Jakub Dawidek if (xbp != fbp) 1188dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(xbp, fbp); 1189dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, fbp); 1190dba915cfSPawel Jakub Dawidek } else if (fbp != NULL) { 11912d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 11922d1661a5SPawel Jakub Dawidek 11932d1661a5SPawel Jakub Dawidek /* 11942d1661a5SPawel Jakub Dawidek * One request failed, so send the same request to 11952d1661a5SPawel Jakub Dawidek * the parity consumer. 11962d1661a5SPawel Jakub Dawidek */ 1197f5a2f7feSPawel Jakub Dawidek disk = pbp->bio_driver2; 11982d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 1199f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 12002d1661a5SPawel Jakub Dawidek goto finish; 12012d1661a5SPawel Jakub Dawidek } 12022d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 12032d1661a5SPawel Jakub Dawidek pbp->bio_inbed--; 1204f5a2f7feSPawel Jakub Dawidek fbp->bio_flags &= ~(BIO_DONE | BIO_ERROR); 1205f5a2f7feSPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 1206f5a2f7feSPawel Jakub Dawidek fbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1207f5a2f7feSPawel Jakub Dawidek fbp->bio_error = 0; 1208f5a2f7feSPawel Jakub Dawidek fbp->bio_completed = 0; 1209f5a2f7feSPawel Jakub Dawidek fbp->bio_children = 0; 1210f5a2f7feSPawel Jakub Dawidek fbp->bio_inbed = 0; 12112d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 1212f5a2f7feSPawel Jakub Dawidek fbp->bio_caller2 = disk; 1213f5a2f7feSPawel Jakub Dawidek fbp->bio_to = cp->provider; 1214f5a2f7feSPawel Jakub Dawidek G_RAID3_LOGREQ(3, fbp, "Sending request (recover)."); 12153650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 12162d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 12172d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 121879e61493SPawel Jakub Dawidek cp->index++; 1219f5a2f7feSPawel Jakub Dawidek g_io_request(fbp, cp); 12202d1661a5SPawel Jakub Dawidek return; 12212d1661a5SPawel Jakub Dawidek } 1222f5a2f7feSPawel Jakub Dawidek if (xbp != NULL) { 1223f5a2f7feSPawel Jakub Dawidek /* 1224f5a2f7feSPawel Jakub Dawidek * Calculate parity. 1225f5a2f7feSPawel Jakub Dawidek */ 1226f5a2f7feSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 1227f5a2f7feSPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) 1228f5a2f7feSPawel Jakub Dawidek continue; 122906b215fdSAlexander Motin g_raid3_xor(cbp->bio_data, xbp->bio_data, 1230f5a2f7feSPawel Jakub Dawidek xbp->bio_length); 1231f5a2f7feSPawel Jakub Dawidek } 1232f5a2f7feSPawel Jakub Dawidek xbp->bio_cflags &= ~G_RAID3_BIO_CFLAG_PARITY; 1233dba915cfSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1234dba915cfSPawel Jakub Dawidek if (!g_raid3_is_zero(xbp)) { 1235dba915cfSPawel Jakub Dawidek g_raid3_parity_mismatch++; 1236dba915cfSPawel Jakub Dawidek pbp->bio_error = EIO; 1237dba915cfSPawel Jakub Dawidek goto finish; 1238dba915cfSPawel Jakub Dawidek } 1239dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, xbp); 1240dba915cfSPawel Jakub Dawidek } 12412d1661a5SPawel Jakub Dawidek } 12422d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 12432d1661a5SPawel Jakub Dawidek cadd = padd = 0; 12442d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 12452d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 12462d1661a5SPawel Jakub Dawidek bcopy(cbp->bio_data + cadd, pbp->bio_data + padd, atom); 12472d1661a5SPawel Jakub Dawidek pbp->bio_completed += atom; 12482d1661a5SPawel Jakub Dawidek padd += atom; 12492d1661a5SPawel Jakub Dawidek } 12502d1661a5SPawel Jakub Dawidek cadd += atom; 12512d1661a5SPawel Jakub Dawidek } 12522d1661a5SPawel Jakub Dawidek finish: 12532d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 12542d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 12554cf67afeSPawel Jakub Dawidek else { 12564cf67afeSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) 12574cf67afeSPawel Jakub Dawidek G_RAID3_LOGREQ(1, pbp, "Verification error."); 12582d1661a5SPawel Jakub Dawidek else 12592d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 12604cf67afeSPawel Jakub Dawidek } 1261dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_MASK; 12622d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 12632d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 1264290c6161SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 12652d1661a5SPawel Jakub Dawidek } 12662d1661a5SPawel Jakub Dawidek 12672d1661a5SPawel Jakub Dawidek static void 12682d1661a5SPawel Jakub Dawidek g_raid3_done(struct bio *bp) 12692d1661a5SPawel Jakub Dawidek { 12702d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12712d1661a5SPawel Jakub Dawidek 12722d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 12732d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_REGULAR; 12742d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Regular request done (error=%d).", bp->bio_error); 12752d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 12762d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 12778de58113SAlexander Motin mtx_unlock(&sc->sc_queue_mtx); 12782d1661a5SPawel Jakub Dawidek wakeup(sc); 12792d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 12802d1661a5SPawel Jakub Dawidek } 12812d1661a5SPawel Jakub Dawidek 12822d1661a5SPawel Jakub Dawidek static void 12832d1661a5SPawel Jakub Dawidek g_raid3_regular_request(struct bio *cbp) 12842d1661a5SPawel Jakub Dawidek { 12852d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12862d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 12872d1661a5SPawel Jakub Dawidek struct bio *pbp; 12882d1661a5SPawel Jakub Dawidek 12892d1661a5SPawel Jakub Dawidek g_topology_assert_not(); 12902d1661a5SPawel Jakub Dawidek 12912d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 12922d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 12930962f942SPawel Jakub Dawidek cbp->bio_from->index--; 12940962f942SPawel Jakub Dawidek if (cbp->bio_cmd == BIO_WRITE) 12950962f942SPawel Jakub Dawidek sc->sc_writes--; 12962d1661a5SPawel Jakub Dawidek disk = cbp->bio_from->private; 12972d1661a5SPawel Jakub Dawidek if (disk == NULL) { 12982d1661a5SPawel Jakub Dawidek g_topology_lock(); 12992d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cbp->bio_from); 13002d1661a5SPawel Jakub Dawidek g_topology_unlock(); 13012d1661a5SPawel Jakub Dawidek } 13022d1661a5SPawel Jakub Dawidek 13032d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Request finished."); 13042d1661a5SPawel Jakub Dawidek pbp->bio_inbed++; 13052d1661a5SPawel Jakub Dawidek KASSERT(pbp->bio_inbed <= pbp->bio_children, 13062d1661a5SPawel Jakub Dawidek ("bio_inbed (%u) is bigger than bio_children (%u).", pbp->bio_inbed, 13072d1661a5SPawel Jakub Dawidek pbp->bio_children)); 13082d1661a5SPawel Jakub Dawidek if (pbp->bio_inbed != pbp->bio_children) 13092d1661a5SPawel Jakub Dawidek return; 13102d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 13112d1661a5SPawel Jakub Dawidek case BIO_READ: 13122d1661a5SPawel Jakub Dawidek g_raid3_gather(pbp); 13132d1661a5SPawel Jakub Dawidek break; 13142d1661a5SPawel Jakub Dawidek case BIO_WRITE: 13152d1661a5SPawel Jakub Dawidek case BIO_DELETE: 13162d1661a5SPawel Jakub Dawidek { 13172d1661a5SPawel Jakub Dawidek int error = 0; 13182d1661a5SPawel Jakub Dawidek 13192d1661a5SPawel Jakub Dawidek pbp->bio_completed = pbp->bio_length; 13202d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) { 13213aae74ecSPawel Jakub Dawidek if (cbp->bio_error == 0) { 13223aae74ecSPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13233aae74ecSPawel Jakub Dawidek continue; 13242d1661a5SPawel Jakub Dawidek } 13253aae74ecSPawel Jakub Dawidek 13262d1661a5SPawel Jakub Dawidek if (error == 0) 13272d1661a5SPawel Jakub Dawidek error = cbp->bio_error; 13282d1661a5SPawel Jakub Dawidek else if (pbp->bio_error == 0) { 13292d1661a5SPawel Jakub Dawidek /* 13302d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 13312d1661a5SPawel Jakub Dawidek */ 13322d1661a5SPawel Jakub Dawidek pbp->bio_error = error; 13332d1661a5SPawel Jakub Dawidek } 13343aae74ecSPawel Jakub Dawidek 13353aae74ecSPawel Jakub Dawidek disk = cbp->bio_caller2; 13363aae74ecSPawel Jakub Dawidek if (disk == NULL) { 13373aae74ecSPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13383aae74ecSPawel Jakub Dawidek continue; 13393aae74ecSPawel Jakub Dawidek } 13403aae74ecSPawel Jakub Dawidek 13413aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 13423aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 13433aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, 13443aae74ecSPawel Jakub Dawidek "Request failed (error=%d).", 13453aae74ecSPawel Jakub Dawidek cbp->bio_error); 13463aae74ecSPawel Jakub Dawidek } else { 13473aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(1, cbp, 13483aae74ecSPawel Jakub Dawidek "Request failed (error=%d).", 13493aae74ecSPawel Jakub Dawidek cbp->bio_error); 13503aae74ecSPawel Jakub Dawidek } 13513aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 13523aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 13533aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 13543aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 13553aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 13563aae74ecSPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 13572d1661a5SPawel Jakub Dawidek } 13582d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13592d1661a5SPawel Jakub Dawidek } 13602d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 13612d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 13622d1661a5SPawel Jakub Dawidek else 13632d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 13642d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_DEGRADED; 13652d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_NOPARITY; 13663650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_inflight, pbp); 13673650be51SPawel Jakub Dawidek /* Release delayed sync requests if possible. */ 13683650be51SPawel Jakub Dawidek g_raid3_sync_release(sc); 13692d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 13702d1661a5SPawel Jakub Dawidek break; 13712d1661a5SPawel Jakub Dawidek } 13722d1661a5SPawel Jakub Dawidek } 13732d1661a5SPawel Jakub Dawidek } 13742d1661a5SPawel Jakub Dawidek 13752d1661a5SPawel Jakub Dawidek static void 13762d1661a5SPawel Jakub Dawidek g_raid3_sync_done(struct bio *bp) 13772d1661a5SPawel Jakub Dawidek { 13782d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 13792d1661a5SPawel Jakub Dawidek 13802d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request delivered."); 13812d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 13822d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_SYNC; 13832d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 13842d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 13858de58113SAlexander Motin mtx_unlock(&sc->sc_queue_mtx); 13862d1661a5SPawel Jakub Dawidek wakeup(sc); 13872d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 13882d1661a5SPawel Jakub Dawidek } 13892d1661a5SPawel Jakub Dawidek 13902d1661a5SPawel Jakub Dawidek static void 139142461fbaSPawel Jakub Dawidek g_raid3_flush(struct g_raid3_softc *sc, struct bio *bp) 139242461fbaSPawel Jakub Dawidek { 139342461fbaSPawel Jakub Dawidek struct bio_queue_head queue; 139442461fbaSPawel Jakub Dawidek struct g_raid3_disk *disk; 139542461fbaSPawel Jakub Dawidek struct g_consumer *cp; 139642461fbaSPawel Jakub Dawidek struct bio *cbp; 139742461fbaSPawel Jakub Dawidek u_int i; 139842461fbaSPawel Jakub Dawidek 139942461fbaSPawel Jakub Dawidek bioq_init(&queue); 140042461fbaSPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 140142461fbaSPawel Jakub Dawidek disk = &sc->sc_disks[i]; 140242461fbaSPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 140342461fbaSPawel Jakub Dawidek continue; 140442461fbaSPawel Jakub Dawidek cbp = g_clone_bio(bp); 140542461fbaSPawel Jakub Dawidek if (cbp == NULL) { 140642461fbaSPawel Jakub Dawidek for (cbp = bioq_first(&queue); cbp != NULL; 140742461fbaSPawel Jakub Dawidek cbp = bioq_first(&queue)) { 140842461fbaSPawel Jakub Dawidek bioq_remove(&queue, cbp); 140942461fbaSPawel Jakub Dawidek g_destroy_bio(cbp); 141042461fbaSPawel Jakub Dawidek } 141142461fbaSPawel Jakub Dawidek if (bp->bio_error == 0) 141242461fbaSPawel Jakub Dawidek bp->bio_error = ENOMEM; 141342461fbaSPawel Jakub Dawidek g_io_deliver(bp, bp->bio_error); 141442461fbaSPawel Jakub Dawidek return; 141542461fbaSPawel Jakub Dawidek } 141642461fbaSPawel Jakub Dawidek bioq_insert_tail(&queue, cbp); 141742461fbaSPawel Jakub Dawidek cbp->bio_done = g_std_done; 141842461fbaSPawel Jakub Dawidek cbp->bio_caller1 = disk; 141942461fbaSPawel Jakub Dawidek cbp->bio_to = disk->d_consumer->provider; 142042461fbaSPawel Jakub Dawidek } 142142461fbaSPawel Jakub Dawidek for (cbp = bioq_first(&queue); cbp != NULL; cbp = bioq_first(&queue)) { 142242461fbaSPawel Jakub Dawidek bioq_remove(&queue, cbp); 142342461fbaSPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 142442461fbaSPawel Jakub Dawidek disk = cbp->bio_caller1; 142542461fbaSPawel Jakub Dawidek cbp->bio_caller1 = NULL; 142642461fbaSPawel Jakub Dawidek cp = disk->d_consumer; 142742461fbaSPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 142842461fbaSPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 142942461fbaSPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 143042461fbaSPawel Jakub Dawidek g_io_request(cbp, disk->d_consumer); 143142461fbaSPawel Jakub Dawidek } 143242461fbaSPawel Jakub Dawidek } 143342461fbaSPawel Jakub Dawidek 143442461fbaSPawel Jakub Dawidek static void 14352d1661a5SPawel Jakub Dawidek g_raid3_start(struct bio *bp) 14362d1661a5SPawel Jakub Dawidek { 14372d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 14382d1661a5SPawel Jakub Dawidek 14392d1661a5SPawel Jakub Dawidek sc = bp->bio_to->geom->softc; 14402d1661a5SPawel Jakub Dawidek /* 14412d1661a5SPawel Jakub Dawidek * If sc == NULL or there are no valid disks, provider's error 14422d1661a5SPawel Jakub Dawidek * should be set and g_raid3_start() should not be called at all. 14432d1661a5SPawel Jakub Dawidek */ 14442d1661a5SPawel Jakub Dawidek KASSERT(sc != NULL && (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 14452d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE), 14462d1661a5SPawel Jakub Dawidek ("Provider's error should be set (error=%d)(device=%s).", 14472d1661a5SPawel Jakub Dawidek bp->bio_to->error, bp->bio_to->name)); 14482d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Request received."); 14492d1661a5SPawel Jakub Dawidek 14502d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 14512d1661a5SPawel Jakub Dawidek case BIO_READ: 14522d1661a5SPawel Jakub Dawidek case BIO_WRITE: 14532d1661a5SPawel Jakub Dawidek case BIO_DELETE: 14542d1661a5SPawel Jakub Dawidek break; 145542461fbaSPawel Jakub Dawidek case BIO_FLUSH: 145642461fbaSPawel Jakub Dawidek g_raid3_flush(sc, bp); 145742461fbaSPawel Jakub Dawidek return; 14582d1661a5SPawel Jakub Dawidek case BIO_GETATTR: 14592d1661a5SPawel Jakub Dawidek default: 14602d1661a5SPawel Jakub Dawidek g_io_deliver(bp, EOPNOTSUPP); 14612d1661a5SPawel Jakub Dawidek return; 14622d1661a5SPawel Jakub Dawidek } 14632d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 14642d1661a5SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_queue, bp); 14658de58113SAlexander Motin mtx_unlock(&sc->sc_queue_mtx); 14662d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 14672d1661a5SPawel Jakub Dawidek wakeup(sc); 14682d1661a5SPawel Jakub Dawidek } 14692d1661a5SPawel Jakub Dawidek 14702d1661a5SPawel Jakub Dawidek /* 14713650be51SPawel Jakub Dawidek * Return TRUE if the given request is colliding with a in-progress 14723650be51SPawel Jakub Dawidek * synchronization request. 14732d1661a5SPawel Jakub Dawidek */ 14743650be51SPawel Jakub Dawidek static int 14753650be51SPawel Jakub Dawidek g_raid3_sync_collision(struct g_raid3_softc *sc, struct bio *bp) 14762d1661a5SPawel Jakub Dawidek { 14772d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 14783650be51SPawel Jakub Dawidek struct bio *sbp; 14793650be51SPawel Jakub Dawidek off_t rstart, rend, sstart, send; 14803650be51SPawel Jakub Dawidek int i; 14813650be51SPawel Jakub Dawidek 14823650be51SPawel Jakub Dawidek disk = sc->sc_syncdisk; 14833650be51SPawel Jakub Dawidek if (disk == NULL) 14843650be51SPawel Jakub Dawidek return (0); 14853650be51SPawel Jakub Dawidek rstart = bp->bio_offset; 14863650be51SPawel Jakub Dawidek rend = bp->bio_offset + bp->bio_length; 14873650be51SPawel Jakub Dawidek for (i = 0; i < g_raid3_syncreqs; i++) { 14883650be51SPawel Jakub Dawidek sbp = disk->d_sync.ds_bios[i]; 14893650be51SPawel Jakub Dawidek if (sbp == NULL) 14903650be51SPawel Jakub Dawidek continue; 14913650be51SPawel Jakub Dawidek sstart = sbp->bio_offset; 14923650be51SPawel Jakub Dawidek send = sbp->bio_length; 14933650be51SPawel Jakub Dawidek if (sbp->bio_cmd == BIO_WRITE) { 14943650be51SPawel Jakub Dawidek sstart *= sc->sc_ndisks - 1; 14953650be51SPawel Jakub Dawidek send *= sc->sc_ndisks - 1; 14963650be51SPawel Jakub Dawidek } 14973650be51SPawel Jakub Dawidek send += sstart; 14983650be51SPawel Jakub Dawidek if (rend > sstart && rstart < send) 14993650be51SPawel Jakub Dawidek return (1); 15003650be51SPawel Jakub Dawidek } 15013650be51SPawel Jakub Dawidek return (0); 15023650be51SPawel Jakub Dawidek } 15033650be51SPawel Jakub Dawidek 15043650be51SPawel Jakub Dawidek /* 15053650be51SPawel Jakub Dawidek * Return TRUE if the given sync request is colliding with a in-progress regular 15063650be51SPawel Jakub Dawidek * request. 15073650be51SPawel Jakub Dawidek */ 15083650be51SPawel Jakub Dawidek static int 15093650be51SPawel Jakub Dawidek g_raid3_regular_collision(struct g_raid3_softc *sc, struct bio *sbp) 15103650be51SPawel Jakub Dawidek { 15113650be51SPawel Jakub Dawidek off_t rstart, rend, sstart, send; 15122d1661a5SPawel Jakub Dawidek struct bio *bp; 15132d1661a5SPawel Jakub Dawidek 15143650be51SPawel Jakub Dawidek if (sc->sc_syncdisk == NULL) 15153650be51SPawel Jakub Dawidek return (0); 15163650be51SPawel Jakub Dawidek sstart = sbp->bio_offset; 15173650be51SPawel Jakub Dawidek send = sstart + sbp->bio_length; 15183650be51SPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_inflight.queue, bio_queue) { 15193650be51SPawel Jakub Dawidek rstart = bp->bio_offset; 15203650be51SPawel Jakub Dawidek rend = bp->bio_offset + bp->bio_length; 15213650be51SPawel Jakub Dawidek if (rend > sstart && rstart < send) 15223650be51SPawel Jakub Dawidek return (1); 15232d1661a5SPawel Jakub Dawidek } 15243650be51SPawel Jakub Dawidek return (0); 15252d1661a5SPawel Jakub Dawidek } 15262d1661a5SPawel Jakub Dawidek 15273650be51SPawel Jakub Dawidek /* 15283650be51SPawel Jakub Dawidek * Puts request onto delayed queue. 15293650be51SPawel Jakub Dawidek */ 15303650be51SPawel Jakub Dawidek static void 15313650be51SPawel Jakub Dawidek g_raid3_regular_delay(struct g_raid3_softc *sc, struct bio *bp) 15323650be51SPawel Jakub Dawidek { 15333650be51SPawel Jakub Dawidek 15343650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Delaying request."); 15353650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_regular_delayed, bp); 15363650be51SPawel Jakub Dawidek } 15373650be51SPawel Jakub Dawidek 15383650be51SPawel Jakub Dawidek /* 15393650be51SPawel Jakub Dawidek * Puts synchronization request onto delayed queue. 15403650be51SPawel Jakub Dawidek */ 15413650be51SPawel Jakub Dawidek static void 15423650be51SPawel Jakub Dawidek g_raid3_sync_delay(struct g_raid3_softc *sc, struct bio *bp) 15433650be51SPawel Jakub Dawidek { 15443650be51SPawel Jakub Dawidek 15453650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Delaying synchronization request."); 15463650be51SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_sync_delayed, bp); 15473650be51SPawel Jakub Dawidek } 15483650be51SPawel Jakub Dawidek 15493650be51SPawel Jakub Dawidek /* 15503650be51SPawel Jakub Dawidek * Releases delayed regular requests which don't collide anymore with sync 15513650be51SPawel Jakub Dawidek * requests. 15523650be51SPawel Jakub Dawidek */ 15533650be51SPawel Jakub Dawidek static void 15543650be51SPawel Jakub Dawidek g_raid3_regular_release(struct g_raid3_softc *sc) 15553650be51SPawel Jakub Dawidek { 15563650be51SPawel Jakub Dawidek struct bio *bp, *bp2; 15573650be51SPawel Jakub Dawidek 15583650be51SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(bp, &sc->sc_regular_delayed.queue, bio_queue, bp2) { 15593650be51SPawel Jakub Dawidek if (g_raid3_sync_collision(sc, bp)) 15603650be51SPawel Jakub Dawidek continue; 15613650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_regular_delayed, bp); 15623650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Releasing delayed request (%p).", bp); 15633650be51SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 15643650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 15653650be51SPawel Jakub Dawidek #if 0 15663650be51SPawel Jakub Dawidek /* 15673650be51SPawel Jakub Dawidek * wakeup() is not needed, because this function is called from 15683650be51SPawel Jakub Dawidek * the worker thread. 15693650be51SPawel Jakub Dawidek */ 15703650be51SPawel Jakub Dawidek wakeup(&sc->sc_queue); 15713650be51SPawel Jakub Dawidek #endif 15723650be51SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 15733650be51SPawel Jakub Dawidek } 15743650be51SPawel Jakub Dawidek } 15753650be51SPawel Jakub Dawidek 15763650be51SPawel Jakub Dawidek /* 15773650be51SPawel Jakub Dawidek * Releases delayed sync requests which don't collide anymore with regular 15783650be51SPawel Jakub Dawidek * requests. 15793650be51SPawel Jakub Dawidek */ 15803650be51SPawel Jakub Dawidek static void 15813650be51SPawel Jakub Dawidek g_raid3_sync_release(struct g_raid3_softc *sc) 15823650be51SPawel Jakub Dawidek { 15833650be51SPawel Jakub Dawidek struct bio *bp, *bp2; 15843650be51SPawel Jakub Dawidek 15853650be51SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(bp, &sc->sc_sync_delayed.queue, bio_queue, bp2) { 15863650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 15873650be51SPawel Jakub Dawidek continue; 15883650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_sync_delayed, bp); 15893650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, 15903650be51SPawel Jakub Dawidek "Releasing delayed synchronization request."); 15913650be51SPawel Jakub Dawidek g_io_request(bp, bp->bio_from); 15923650be51SPawel Jakub Dawidek } 15933650be51SPawel Jakub Dawidek } 15943650be51SPawel Jakub Dawidek 15953650be51SPawel Jakub Dawidek /* 15963650be51SPawel Jakub Dawidek * Handle synchronization requests. 15973650be51SPawel Jakub Dawidek * Every synchronization request is two-steps process: first, READ request is 15983650be51SPawel Jakub Dawidek * send to active provider and then WRITE request (with read data) to the provider 15993650be51SPawel Jakub Dawidek * beeing synchronized. When WRITE is finished, new synchronization request is 16003650be51SPawel Jakub Dawidek * send. 16013650be51SPawel Jakub Dawidek */ 16022d1661a5SPawel Jakub Dawidek static void 16032d1661a5SPawel Jakub Dawidek g_raid3_sync_request(struct bio *bp) 16042d1661a5SPawel Jakub Dawidek { 16052d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 16062d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 16072d1661a5SPawel Jakub Dawidek 160879e61493SPawel Jakub Dawidek bp->bio_from->index--; 16092d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 16102d1661a5SPawel Jakub Dawidek disk = bp->bio_from->private; 16112d1661a5SPawel Jakub Dawidek if (disk == NULL) { 16123650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); /* Avoid recursion on sc_lock. */ 16132d1661a5SPawel Jakub Dawidek g_topology_lock(); 16142d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, bp->bio_from); 16152d1661a5SPawel Jakub Dawidek g_topology_unlock(); 16163650be51SPawel Jakub Dawidek free(bp->bio_data, M_RAID3); 16172d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 16183650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 16192d1661a5SPawel Jakub Dawidek return; 16202d1661a5SPawel Jakub Dawidek } 16212d1661a5SPawel Jakub Dawidek 16222d1661a5SPawel Jakub Dawidek /* 16232d1661a5SPawel Jakub Dawidek * Synchronization request. 16242d1661a5SPawel Jakub Dawidek */ 16252d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 16262d1661a5SPawel Jakub Dawidek case BIO_READ: 16272d1661a5SPawel Jakub Dawidek { 16282d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 16292d1661a5SPawel Jakub Dawidek u_char *dst, *src; 16302d1661a5SPawel Jakub Dawidek off_t left; 16312d1661a5SPawel Jakub Dawidek u_int atom; 16322d1661a5SPawel Jakub Dawidek 16332d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 16342d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 16352d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 16362d1661a5SPawel Jakub Dawidek bp->bio_error); 16372d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 16382d1661a5SPawel Jakub Dawidek return; 16392d1661a5SPawel Jakub Dawidek } 16402d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 16412d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 16422d1661a5SPawel Jakub Dawidek dst = src = bp->bio_data; 16432d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) { 16442d1661a5SPawel Jakub Dawidek u_int n; 16452d1661a5SPawel Jakub Dawidek 16462d1661a5SPawel Jakub Dawidek /* Parity component. */ 16472d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 16482d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 16492d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 16502d1661a5SPawel Jakub Dawidek src += atom; 16512d1661a5SPawel Jakub Dawidek for (n = 1; n < sc->sc_ndisks - 1; n++) { 165206b215fdSAlexander Motin g_raid3_xor(src, dst, atom); 16532d1661a5SPawel Jakub Dawidek src += atom; 16542d1661a5SPawel Jakub Dawidek } 16552d1661a5SPawel Jakub Dawidek dst += atom; 16562d1661a5SPawel Jakub Dawidek } 16572d1661a5SPawel Jakub Dawidek } else { 16582d1661a5SPawel Jakub Dawidek /* Regular component. */ 16592d1661a5SPawel Jakub Dawidek src += atom * disk->d_no; 16602d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 16612d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 16622d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 16632d1661a5SPawel Jakub Dawidek src += sc->sc_sectorsize; 16642d1661a5SPawel Jakub Dawidek dst += atom; 16652d1661a5SPawel Jakub Dawidek } 16662d1661a5SPawel Jakub Dawidek } 16673650be51SPawel Jakub Dawidek bp->bio_driver1 = bp->bio_driver2 = NULL; 16683650be51SPawel Jakub Dawidek bp->bio_pflags = 0; 16692d1661a5SPawel Jakub Dawidek bp->bio_offset /= sc->sc_ndisks - 1; 16702d1661a5SPawel Jakub Dawidek bp->bio_length /= sc->sc_ndisks - 1; 16712d1661a5SPawel Jakub Dawidek bp->bio_cmd = BIO_WRITE; 16722d1661a5SPawel Jakub Dawidek bp->bio_cflags = 0; 16732d1661a5SPawel Jakub Dawidek bp->bio_children = bp->bio_inbed = 0; 16742d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 16753650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 16762d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 16772d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 167879e61493SPawel Jakub Dawidek cp->index++; 16792d1661a5SPawel Jakub Dawidek g_io_request(bp, cp); 16802d1661a5SPawel Jakub Dawidek return; 16812d1661a5SPawel Jakub Dawidek } 16822d1661a5SPawel Jakub Dawidek case BIO_WRITE: 1683d2fb9c62SPawel Jakub Dawidek { 1684d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 16853650be51SPawel Jakub Dawidek off_t boffset, moffset; 16863650be51SPawel Jakub Dawidek void *data; 16873650be51SPawel Jakub Dawidek int i; 1688d2fb9c62SPawel Jakub Dawidek 16892d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 16902d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 16912d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 16922d1661a5SPawel Jakub Dawidek bp->bio_error); 16932d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 1694ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 16952d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 16962d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 16972d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 16982d1661a5SPawel Jakub Dawidek return; 16992d1661a5SPawel Jakub Dawidek } 17002d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 1701d2fb9c62SPawel Jakub Dawidek sync = &disk->d_sync; 17023650be51SPawel Jakub Dawidek if (sync->ds_offset == sc->sc_mediasize / (sc->sc_ndisks - 1) || 17033650be51SPawel Jakub Dawidek sync->ds_consumer == NULL || 17043650be51SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 17053650be51SPawel Jakub Dawidek /* Don't send more synchronization requests. */ 17063650be51SPawel Jakub Dawidek sync->ds_inflight--; 17073650be51SPawel Jakub Dawidek if (sync->ds_bios != NULL) { 1708ef25813dSRuslan Ermilov i = (int)(uintptr_t)bp->bio_caller1; 17093650be51SPawel Jakub Dawidek sync->ds_bios[i] = NULL; 17103650be51SPawel Jakub Dawidek } 17113650be51SPawel Jakub Dawidek free(bp->bio_data, M_RAID3); 17122d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 17133650be51SPawel Jakub Dawidek if (sync->ds_inflight > 0) 1714d2fb9c62SPawel Jakub Dawidek return; 17153650be51SPawel Jakub Dawidek if (sync->ds_consumer == NULL || 17163650be51SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 17173650be51SPawel Jakub Dawidek return; 17183650be51SPawel Jakub Dawidek } 17192d1661a5SPawel Jakub Dawidek /* 17202d1661a5SPawel Jakub Dawidek * Disk up-to-date, activate it. 17212d1661a5SPawel Jakub Dawidek */ 17222d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_ACTIVE, 17232d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 17242d1661a5SPawel Jakub Dawidek return; 17253650be51SPawel Jakub Dawidek } 17263650be51SPawel Jakub Dawidek 17273650be51SPawel Jakub Dawidek /* Send next synchronization request. */ 17283650be51SPawel Jakub Dawidek data = bp->bio_data; 17293650be51SPawel Jakub Dawidek bzero(bp, sizeof(*bp)); 17303650be51SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 17313650be51SPawel Jakub Dawidek bp->bio_offset = sync->ds_offset * (sc->sc_ndisks - 1); 17323650be51SPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 17333650be51SPawel Jakub Dawidek sync->ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 17343650be51SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 17353650be51SPawel Jakub Dawidek bp->bio_data = data; 17363650be51SPawel Jakub Dawidek bp->bio_from = sync->ds_consumer; 17373650be51SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 17383650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 17393650be51SPawel Jakub Dawidek sync->ds_consumer->index++; 17402d1661a5SPawel Jakub Dawidek /* 17413650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a regular request. 17422d1661a5SPawel Jakub Dawidek */ 17433650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 17443650be51SPawel Jakub Dawidek g_raid3_sync_delay(sc, bp); 17453650be51SPawel Jakub Dawidek else 17463650be51SPawel Jakub Dawidek g_io_request(bp, sync->ds_consumer); 17473650be51SPawel Jakub Dawidek 17483650be51SPawel Jakub Dawidek /* Release delayed requests if possible. */ 17493650be51SPawel Jakub Dawidek g_raid3_regular_release(sc); 17503650be51SPawel Jakub Dawidek 17513650be51SPawel Jakub Dawidek /* Find the smallest offset. */ 17523650be51SPawel Jakub Dawidek moffset = sc->sc_mediasize; 17533650be51SPawel Jakub Dawidek for (i = 0; i < g_raid3_syncreqs; i++) { 17543650be51SPawel Jakub Dawidek bp = sync->ds_bios[i]; 17553650be51SPawel Jakub Dawidek boffset = bp->bio_offset; 17563650be51SPawel Jakub Dawidek if (bp->bio_cmd == BIO_WRITE) 17573650be51SPawel Jakub Dawidek boffset *= sc->sc_ndisks - 1; 17583650be51SPawel Jakub Dawidek if (boffset < moffset) 17593650be51SPawel Jakub Dawidek moffset = boffset; 17603650be51SPawel Jakub Dawidek } 17613650be51SPawel Jakub Dawidek if (sync->ds_offset_done + (MAXPHYS * 100) < moffset) { 17623650be51SPawel Jakub Dawidek /* Update offset_done on every 100 blocks. */ 17633650be51SPawel Jakub Dawidek sync->ds_offset_done = moffset; 17642d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 17652d1661a5SPawel Jakub Dawidek } 17662d1661a5SPawel Jakub Dawidek return; 1767d2fb9c62SPawel Jakub Dawidek } 17682d1661a5SPawel Jakub Dawidek default: 17692d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Invalid command here: %u (device=%s)", 17702d1661a5SPawel Jakub Dawidek bp->bio_cmd, sc->sc_name)); 17712d1661a5SPawel Jakub Dawidek break; 17722d1661a5SPawel Jakub Dawidek } 17732d1661a5SPawel Jakub Dawidek } 17742d1661a5SPawel Jakub Dawidek 17752d1661a5SPawel Jakub Dawidek static int 17762d1661a5SPawel Jakub Dawidek g_raid3_register_request(struct bio *pbp) 17772d1661a5SPawel Jakub Dawidek { 17782d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 17792d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 17802d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 1781ee40c7aaSPawel Jakub Dawidek struct bio *cbp, *tmpbp; 17822d1661a5SPawel Jakub Dawidek off_t offset, length; 1783fa6a7837SDavid E. O'Brien u_int n, ndisks; 1784dba915cfSPawel Jakub Dawidek int round_robin, verify; 17852d1661a5SPawel Jakub Dawidek 1786fa6a7837SDavid E. O'Brien ndisks = 0; 17872d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 17882d1661a5SPawel Jakub Dawidek if ((pbp->bio_cflags & G_RAID3_BIO_CFLAG_REGSYNC) != 0 && 17892d1661a5SPawel Jakub Dawidek sc->sc_syncdisk == NULL) { 17902d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, EIO); 17912d1661a5SPawel Jakub Dawidek return (0); 17922d1661a5SPawel Jakub Dawidek } 17932d1661a5SPawel Jakub Dawidek g_raid3_init_bio(pbp); 17942d1661a5SPawel Jakub Dawidek length = pbp->bio_length / (sc->sc_ndisks - 1); 17952d1661a5SPawel Jakub Dawidek offset = pbp->bio_offset / (sc->sc_ndisks - 1); 1796dba915cfSPawel Jakub Dawidek round_robin = verify = 0; 17972d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 17982d1661a5SPawel Jakub Dawidek case BIO_READ: 1799dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 1800dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1801dba915cfSPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_VERIFY; 1802dba915cfSPawel Jakub Dawidek verify = 1; 1803dba915cfSPawel Jakub Dawidek ndisks = sc->sc_ndisks; 1804dba915cfSPawel Jakub Dawidek } else { 1805dba915cfSPawel Jakub Dawidek verify = 0; 18062d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks - 1; 1807dba915cfSPawel Jakub Dawidek } 1808dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0 && 1809dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1810dba915cfSPawel Jakub Dawidek round_robin = 1; 1811dba915cfSPawel Jakub Dawidek } else { 1812dba915cfSPawel Jakub Dawidek round_robin = 0; 1813dba915cfSPawel Jakub Dawidek } 1814dba915cfSPawel Jakub Dawidek KASSERT(!round_robin || !verify, 1815dba915cfSPawel Jakub Dawidek ("ROUND-ROBIN and VERIFY are mutually exclusive.")); 1816f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = &sc->sc_disks[sc->sc_ndisks - 1]; 18172d1661a5SPawel Jakub Dawidek break; 18182d1661a5SPawel Jakub Dawidek case BIO_WRITE: 18192d1661a5SPawel Jakub Dawidek case BIO_DELETE: 18203650be51SPawel Jakub Dawidek /* 18213650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a synchronization 18223650be51SPawel Jakub Dawidek * request. 18233650be51SPawel Jakub Dawidek */ 18243650be51SPawel Jakub Dawidek if (g_raid3_sync_collision(sc, pbp)) { 18253650be51SPawel Jakub Dawidek g_raid3_regular_delay(sc, pbp); 18263650be51SPawel Jakub Dawidek return (0); 18273650be51SPawel Jakub Dawidek } 1828d2fb9c62SPawel Jakub Dawidek 18294d006a98SPawel Jakub Dawidek if (sc->sc_idle) 18304d006a98SPawel Jakub Dawidek g_raid3_unidle(sc); 18310962f942SPawel Jakub Dawidek else 183201f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 18334d006a98SPawel Jakub Dawidek 18342d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks; 18352d1661a5SPawel Jakub Dawidek break; 18362d1661a5SPawel Jakub Dawidek } 18372d1661a5SPawel Jakub Dawidek for (n = 0; n < ndisks; n++) { 18382d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 18392d1661a5SPawel Jakub Dawidek cbp = g_raid3_clone_bio(sc, pbp); 18402d1661a5SPawel Jakub Dawidek if (cbp == NULL) { 18412d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 18422d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 1843a65a0da2SPawel Jakub Dawidek /* 1844a65a0da2SPawel Jakub Dawidek * To prevent deadlock, we must run back up 1845a65a0da2SPawel Jakub Dawidek * with the ENOMEM for failed requests of any 1846a65a0da2SPawel Jakub Dawidek * of our consumers. Our own sync requests 1847a65a0da2SPawel Jakub Dawidek * can stick around, as they are finite. 1848a65a0da2SPawel Jakub Dawidek */ 1849a65a0da2SPawel Jakub Dawidek if ((pbp->bio_cflags & 1850a65a0da2SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_REGULAR) != 0) { 1851a65a0da2SPawel Jakub Dawidek g_io_deliver(pbp, ENOMEM); 1852a65a0da2SPawel Jakub Dawidek return (0); 1853a65a0da2SPawel Jakub Dawidek } 18542d1661a5SPawel Jakub Dawidek return (ENOMEM); 18552d1661a5SPawel Jakub Dawidek } 18562d1661a5SPawel Jakub Dawidek cbp->bio_offset = offset; 18572d1661a5SPawel Jakub Dawidek cbp->bio_length = length; 18582d1661a5SPawel Jakub Dawidek cbp->bio_done = g_raid3_done; 18592d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 18602d1661a5SPawel Jakub Dawidek case BIO_READ: 18612d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 18622d1661a5SPawel Jakub Dawidek /* 18632d1661a5SPawel Jakub Dawidek * Replace invalid component with the parity 18642d1661a5SPawel Jakub Dawidek * component. 18652d1661a5SPawel Jakub Dawidek */ 18662d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 18672d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 18682d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 1869f5a2f7feSPawel Jakub Dawidek } else if (round_robin && 1870f5a2f7feSPawel Jakub Dawidek disk->d_no == sc->sc_round_robin) { 1871f5a2f7feSPawel Jakub Dawidek /* 1872f5a2f7feSPawel Jakub Dawidek * In round-robin mode skip one data component 1873f5a2f7feSPawel Jakub Dawidek * and use parity component when reading. 1874f5a2f7feSPawel Jakub Dawidek */ 1875f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = disk; 1876f5a2f7feSPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 1877f5a2f7feSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1878f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin++; 1879f5a2f7feSPawel Jakub Dawidek round_robin = 0; 1880dba915cfSPawel Jakub Dawidek } else if (verify && disk->d_no == sc->sc_ndisks - 1) { 1881dba915cfSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 18822d1661a5SPawel Jakub Dawidek } 18832d1661a5SPawel Jakub Dawidek break; 18842d1661a5SPawel Jakub Dawidek case BIO_WRITE: 18852d1661a5SPawel Jakub Dawidek case BIO_DELETE: 18862d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 18872d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 18882d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 18892d1661a5SPawel Jakub Dawidek /* 18902d1661a5SPawel Jakub Dawidek * Active parity component, mark it as such. 18912d1661a5SPawel Jakub Dawidek */ 18922d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 18932d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_PARITY; 18942d1661a5SPawel Jakub Dawidek } 18952d1661a5SPawel Jakub Dawidek } else { 18962d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 18972d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 18982d1661a5SPawel Jakub Dawidek /* 18992d1661a5SPawel Jakub Dawidek * Parity component is not connected, 19002d1661a5SPawel Jakub Dawidek * so destroy its request. 19012d1661a5SPawel Jakub Dawidek */ 19022d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= 19032d1661a5SPawel Jakub Dawidek G_RAID3_BIO_PFLAG_NOPARITY; 19042d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 19052d1661a5SPawel Jakub Dawidek cbp = NULL; 19062d1661a5SPawel Jakub Dawidek } else { 19072d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 19082d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_NODISK; 19092d1661a5SPawel Jakub Dawidek disk = NULL; 19102d1661a5SPawel Jakub Dawidek } 19112d1661a5SPawel Jakub Dawidek } 19122d1661a5SPawel Jakub Dawidek break; 19132d1661a5SPawel Jakub Dawidek } 19142d1661a5SPawel Jakub Dawidek if (cbp != NULL) 19152d1661a5SPawel Jakub Dawidek cbp->bio_caller2 = disk; 19162d1661a5SPawel Jakub Dawidek } 19172d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 19182d1661a5SPawel Jakub Dawidek case BIO_READ: 1919f5a2f7feSPawel Jakub Dawidek if (round_robin) { 1920f5a2f7feSPawel Jakub Dawidek /* 1921f5a2f7feSPawel Jakub Dawidek * If we are in round-robin mode and 'round_robin' is 1922f5a2f7feSPawel Jakub Dawidek * still 1, it means, that we skipped parity component 1923f5a2f7feSPawel Jakub Dawidek * for this read and must reset sc_round_robin field. 1924f5a2f7feSPawel Jakub Dawidek */ 1925f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 1926f5a2f7feSPawel Jakub Dawidek } 1927ee40c7aaSPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 19282d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 19292d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 19302d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 19312d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 19323650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 19332d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", 19342d1661a5SPawel Jakub Dawidek cp->provider->name, cp->acr, cp->acw, cp->ace)); 193579e61493SPawel Jakub Dawidek cp->index++; 19362d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 19372d1661a5SPawel Jakub Dawidek } 19382d1661a5SPawel Jakub Dawidek break; 19392d1661a5SPawel Jakub Dawidek case BIO_WRITE: 19402d1661a5SPawel Jakub Dawidek case BIO_DELETE: 19412d1661a5SPawel Jakub Dawidek /* 19423650be51SPawel Jakub Dawidek * Put request onto inflight queue, so we can check if new 19433650be51SPawel Jakub Dawidek * synchronization requests don't collide with it. 19443650be51SPawel Jakub Dawidek */ 19453650be51SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_inflight, pbp); 19463650be51SPawel Jakub Dawidek 19473650be51SPawel Jakub Dawidek /* 19482d1661a5SPawel Jakub Dawidek * Bump syncid on first write. 19492d1661a5SPawel Jakub Dawidek */ 1950ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) { 1951a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 1952d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(sc); 19532d1661a5SPawel Jakub Dawidek } 19542d1661a5SPawel Jakub Dawidek g_raid3_scatter(pbp); 19552d1661a5SPawel Jakub Dawidek break; 19562d1661a5SPawel Jakub Dawidek } 19572d1661a5SPawel Jakub Dawidek return (0); 19582d1661a5SPawel Jakub Dawidek } 19592d1661a5SPawel Jakub Dawidek 19602d1661a5SPawel Jakub Dawidek static int 19612d1661a5SPawel Jakub Dawidek g_raid3_can_destroy(struct g_raid3_softc *sc) 19622d1661a5SPawel Jakub Dawidek { 19632d1661a5SPawel Jakub Dawidek struct g_geom *gp; 19642d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 19652d1661a5SPawel Jakub Dawidek 19662d1661a5SPawel Jakub Dawidek g_topology_assert(); 19672d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 196818486a5eSPawel Jakub Dawidek if (gp->softc == NULL) 196918486a5eSPawel Jakub Dawidek return (1); 19702d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 19712d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 19722d1661a5SPawel Jakub Dawidek return (0); 19732d1661a5SPawel Jakub Dawidek } 19742d1661a5SPawel Jakub Dawidek gp = sc->sc_sync.ds_geom; 19752d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 19762d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 19772d1661a5SPawel Jakub Dawidek return (0); 19782d1661a5SPawel Jakub Dawidek } 19792d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "No I/O requests for %s, it can be destroyed.", 19802d1661a5SPawel Jakub Dawidek sc->sc_name); 19812d1661a5SPawel Jakub Dawidek return (1); 19822d1661a5SPawel Jakub Dawidek } 19832d1661a5SPawel Jakub Dawidek 19842d1661a5SPawel Jakub Dawidek static int 19852d1661a5SPawel Jakub Dawidek g_raid3_try_destroy(struct g_raid3_softc *sc) 19862d1661a5SPawel Jakub Dawidek { 19872d1661a5SPawel Jakub Dawidek 19883650be51SPawel Jakub Dawidek g_topology_assert_not(); 19893650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 19903650be51SPawel Jakub Dawidek 19914ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 19924ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 19934ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 19944ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 19954ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 19964ed854e8SPawel Jakub Dawidek } 19974ed854e8SPawel Jakub Dawidek 19982d1661a5SPawel Jakub Dawidek g_topology_lock(); 19992d1661a5SPawel Jakub Dawidek if (!g_raid3_can_destroy(sc)) { 20002d1661a5SPawel Jakub Dawidek g_topology_unlock(); 20012d1661a5SPawel Jakub Dawidek return (0); 20022d1661a5SPawel Jakub Dawidek } 200318486a5eSPawel Jakub Dawidek sc->sc_geom->softc = NULL; 200418486a5eSPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 2005a245a548SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_WAIT) != 0) { 20062d1661a5SPawel Jakub Dawidek g_topology_unlock(); 20072d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 20082d1661a5SPawel Jakub Dawidek &sc->sc_worker); 20093650be51SPawel Jakub Dawidek /* Unlock sc_lock here, as it can be destroyed after wakeup. */ 20103650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 20112d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_worker); 20122d1661a5SPawel Jakub Dawidek sc->sc_worker = NULL; 20132d1661a5SPawel Jakub Dawidek } else { 20142d1661a5SPawel Jakub Dawidek g_topology_unlock(); 20153650be51SPawel Jakub Dawidek g_raid3_destroy_device(sc); 20162d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 20172d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 20182d1661a5SPawel Jakub Dawidek } 20192d1661a5SPawel Jakub Dawidek return (1); 20202d1661a5SPawel Jakub Dawidek } 20212d1661a5SPawel Jakub Dawidek 20222d1661a5SPawel Jakub Dawidek /* 20232d1661a5SPawel Jakub Dawidek * Worker thread. 20242d1661a5SPawel Jakub Dawidek */ 20252d1661a5SPawel Jakub Dawidek static void 20262d1661a5SPawel Jakub Dawidek g_raid3_worker(void *arg) 20272d1661a5SPawel Jakub Dawidek { 20282d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 20292d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 20302d1661a5SPawel Jakub Dawidek struct bio *bp; 20310962f942SPawel Jakub Dawidek int timeout; 20322d1661a5SPawel Jakub Dawidek 20332d1661a5SPawel Jakub Dawidek sc = arg; 2034982d11f8SJeff Roberson thread_lock(curthread); 203563710c4dSJohn Baldwin sched_prio(curthread, PRIBIO); 2036982d11f8SJeff Roberson thread_unlock(curthread); 20372d1661a5SPawel Jakub Dawidek 20383650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 20392d1661a5SPawel Jakub Dawidek for (;;) { 20402d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: Let's see...", __func__); 20412d1661a5SPawel Jakub Dawidek /* 20422d1661a5SPawel Jakub Dawidek * First take a look at events. 20432d1661a5SPawel Jakub Dawidek * This is important to handle events before any I/O requests. 20442d1661a5SPawel Jakub Dawidek */ 20452d1661a5SPawel Jakub Dawidek ep = g_raid3_event_get(sc); 20463650be51SPawel Jakub Dawidek if (ep != NULL) { 2047d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 20482d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) { 20492d1661a5SPawel Jakub Dawidek /* Update only device status. */ 20502d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, 20512d1661a5SPawel Jakub Dawidek "Running event for device %s.", 20522d1661a5SPawel Jakub Dawidek sc->sc_name); 20532d1661a5SPawel Jakub Dawidek ep->e_error = 0; 2054d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 1); 20552d1661a5SPawel Jakub Dawidek } else { 20562d1661a5SPawel Jakub Dawidek /* Update disk status. */ 20572d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Running event for disk %s.", 20582d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(ep->e_disk)); 20592d1661a5SPawel Jakub Dawidek ep->e_error = g_raid3_update_disk(ep->e_disk, 2060d97d5ee9SPawel Jakub Dawidek ep->e_state); 20612d1661a5SPawel Jakub Dawidek if (ep->e_error == 0) 2062d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 0); 20632d1661a5SPawel Jakub Dawidek } 20642d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) { 20652d1661a5SPawel Jakub Dawidek KASSERT(ep->e_error == 0, 20662d1661a5SPawel Jakub Dawidek ("Error cannot be handled.")); 20672d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 20682d1661a5SPawel Jakub Dawidek } else { 20692d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 20702d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 20712d1661a5SPawel Jakub Dawidek ep); 20722d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 20732d1661a5SPawel Jakub Dawidek wakeup(ep); 20742d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 20752d1661a5SPawel Jakub Dawidek } 20762d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 20772d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 20783650be51SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) { 20793650be51SPawel Jakub Dawidek curthread->td_pflags &= ~TDP_GEOM; 20803650be51SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Thread exiting."); 20813745c395SJulian Elischer kproc_exit(0); 20822d1661a5SPawel Jakub Dawidek } 20833650be51SPawel Jakub Dawidek } 20842d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 1.", __func__); 20852d1661a5SPawel Jakub Dawidek continue; 20862d1661a5SPawel Jakub Dawidek } 20872d1661a5SPawel Jakub Dawidek /* 20880962f942SPawel Jakub Dawidek * Check if we can mark array as CLEAN and if we can't take 20890962f942SPawel Jakub Dawidek * how much seconds should we wait. 20900962f942SPawel Jakub Dawidek */ 20913650be51SPawel Jakub Dawidek timeout = g_raid3_idle(sc, -1); 20920962f942SPawel Jakub Dawidek /* 20932d1661a5SPawel Jakub Dawidek * Now I/O requests. 20942d1661a5SPawel Jakub Dawidek */ 20952d1661a5SPawel Jakub Dawidek /* Get first request from the queue. */ 20962d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 20972d1661a5SPawel Jakub Dawidek bp = bioq_first(&sc->sc_queue); 20982d1661a5SPawel Jakub Dawidek if (bp == NULL) { 20992d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 21002d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 21012d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 21023650be51SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) { 21033650be51SPawel Jakub Dawidek curthread->td_pflags &= ~TDP_GEOM; 2104d7fad9f6SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Thread exiting."); 21053745c395SJulian Elischer kproc_exit(0); 21063650be51SPawel Jakub Dawidek } 21072d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 21082d1661a5SPawel Jakub Dawidek } 21093650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 2110a2fe5c66SPawel Jakub Dawidek /* 2111a2fe5c66SPawel Jakub Dawidek * XXX: We can miss an event here, because an event 2112a2fe5c66SPawel Jakub Dawidek * can be added without sx-device-lock and without 2113a2fe5c66SPawel Jakub Dawidek * mtx-queue-lock. Maybe I should just stop using 2114a2fe5c66SPawel Jakub Dawidek * dedicated mutex for events synchronization and 2115a2fe5c66SPawel Jakub Dawidek * stick with the queue lock? 2116a2fe5c66SPawel Jakub Dawidek * The event will hang here until next I/O request 2117a2fe5c66SPawel Jakub Dawidek * or next event is received. 2118a2fe5c66SPawel Jakub Dawidek */ 21190962f942SPawel Jakub Dawidek MSLEEP(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, "r3:w1", 21200962f942SPawel Jakub Dawidek timeout * hz); 21213650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 21229bb09163SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 4.", __func__); 21232d1661a5SPawel Jakub Dawidek continue; 21242d1661a5SPawel Jakub Dawidek } 212584edb86dSPawel Jakub Dawidek process: 21262d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 21272d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 21282d1661a5SPawel Jakub Dawidek 21298e007c52SPawel Jakub Dawidek if (bp->bio_from->geom == sc->sc_sync.ds_geom && 21308e007c52SPawel Jakub Dawidek (bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) != 0) { 21318e007c52SPawel Jakub Dawidek g_raid3_sync_request(bp); /* READ */ 21328e007c52SPawel Jakub Dawidek } else if (bp->bio_to != sc->sc_provider) { 21333650be51SPawel Jakub Dawidek if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) != 0) 21342d1661a5SPawel Jakub Dawidek g_raid3_regular_request(bp); 21353650be51SPawel Jakub Dawidek else if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) != 0) 21368e007c52SPawel Jakub Dawidek g_raid3_sync_request(bp); /* WRITE */ 2137de6f1c7cSPawel Jakub Dawidek else { 2138de6f1c7cSPawel Jakub Dawidek KASSERT(0, 2139de6f1c7cSPawel Jakub Dawidek ("Invalid request cflags=0x%hhx to=%s.", 2140de6f1c7cSPawel Jakub Dawidek bp->bio_cflags, bp->bio_to->name)); 2141de6f1c7cSPawel Jakub Dawidek } 2142de6f1c7cSPawel Jakub Dawidek } else if (g_raid3_register_request(bp) != 0) { 21432d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 21443650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 214584edb86dSPawel Jakub Dawidek /* 214684edb86dSPawel Jakub Dawidek * We are short in memory, let see if there are finished 214784edb86dSPawel Jakub Dawidek * request we can free. 214884edb86dSPawel Jakub Dawidek */ 214984edb86dSPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 215084edb86dSPawel Jakub Dawidek if (bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) 215184edb86dSPawel Jakub Dawidek goto process; 21522d1661a5SPawel Jakub Dawidek } 215384edb86dSPawel Jakub Dawidek /* 215484edb86dSPawel Jakub Dawidek * No finished regular request, so at least keep 215584edb86dSPawel Jakub Dawidek * synchronization running. 215684edb86dSPawel Jakub Dawidek */ 215784edb86dSPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 215884edb86dSPawel Jakub Dawidek if (bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) 215984edb86dSPawel Jakub Dawidek goto process; 216084edb86dSPawel Jakub Dawidek } 216184edb86dSPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 216284edb86dSPawel Jakub Dawidek MSLEEP(&sc->sc_queue, &sc->sc_queue_mtx, PRIBIO | PDROP, 216384edb86dSPawel Jakub Dawidek "r3:lowmem", hz / 10); 216484edb86dSPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 21652d1661a5SPawel Jakub Dawidek } 2166d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 9.", __func__); 21672d1661a5SPawel Jakub Dawidek } 21682d1661a5SPawel Jakub Dawidek } 21692d1661a5SPawel Jakub Dawidek 21702d1661a5SPawel Jakub Dawidek static void 21710962f942SPawel Jakub Dawidek g_raid3_update_idle(struct g_raid3_softc *sc, struct g_raid3_disk *disk) 21722d1661a5SPawel Jakub Dawidek { 21732d1661a5SPawel Jakub Dawidek 21743650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 2175501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0) 2176501250baSPawel Jakub Dawidek return; 21770962f942SPawel Jakub Dawidek if (!sc->sc_idle && (disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) == 0) { 21782d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 21793650be51SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 21802d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 21810962f942SPawel Jakub Dawidek } else if (sc->sc_idle && 21820962f942SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) { 21832d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 21843650be51SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 21852d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 21862d1661a5SPawel Jakub Dawidek } 21872d1661a5SPawel Jakub Dawidek } 21882d1661a5SPawel Jakub Dawidek 21892d1661a5SPawel Jakub Dawidek static void 21902d1661a5SPawel Jakub Dawidek g_raid3_sync_start(struct g_raid3_softc *sc) 21912d1661a5SPawel Jakub Dawidek { 21922d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 21933650be51SPawel Jakub Dawidek struct g_consumer *cp; 21943650be51SPawel Jakub Dawidek struct bio *bp; 21952d1661a5SPawel Jakub Dawidek int error; 21962d1661a5SPawel Jakub Dawidek u_int n; 21972d1661a5SPawel Jakub Dawidek 21983650be51SPawel Jakub Dawidek g_topology_assert_not(); 21993650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 22002d1661a5SPawel Jakub Dawidek 22012d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 22022d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 22032d1661a5SPawel Jakub Dawidek sc->sc_state)); 22042d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_syncdisk == NULL, ("Syncdisk is not NULL (%s, %u).", 22052d1661a5SPawel Jakub Dawidek sc->sc_name, sc->sc_state)); 22062d1661a5SPawel Jakub Dawidek disk = NULL; 22072d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 22082d1661a5SPawel Jakub Dawidek if (sc->sc_disks[n].d_state != G_RAID3_DISK_STATE_SYNCHRONIZING) 22092d1661a5SPawel Jakub Dawidek continue; 22102d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 22112d1661a5SPawel Jakub Dawidek break; 22122d1661a5SPawel Jakub Dawidek } 22132d1661a5SPawel Jakub Dawidek if (disk == NULL) 22142d1661a5SPawel Jakub Dawidek return; 22152d1661a5SPawel Jakub Dawidek 22163650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 22173650be51SPawel Jakub Dawidek g_topology_lock(); 22183650be51SPawel Jakub Dawidek cp = g_new_consumer(sc->sc_sync.ds_geom); 22193650be51SPawel Jakub Dawidek error = g_attach(cp, sc->sc_provider); 22203650be51SPawel Jakub Dawidek KASSERT(error == 0, 22213650be51SPawel Jakub Dawidek ("Cannot attach to %s (error=%d).", sc->sc_name, error)); 22223650be51SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 22233650be51SPawel Jakub Dawidek KASSERT(error == 0, ("Cannot open %s (error=%d).", sc->sc_name, error)); 22243650be51SPawel Jakub Dawidek g_topology_unlock(); 22253650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 22263650be51SPawel Jakub Dawidek 22272d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s.", sc->sc_name, 22282d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 2229501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) == 0) 22302d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 22312d1661a5SPawel Jakub Dawidek KASSERT(disk->d_sync.ds_consumer == NULL, 22322d1661a5SPawel Jakub Dawidek ("Sync consumer already exists (device=%s, disk=%s).", 22332d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk))); 22343650be51SPawel Jakub Dawidek 22353650be51SPawel Jakub Dawidek disk->d_sync.ds_consumer = cp; 22362d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer->private = disk; 223779e61493SPawel Jakub Dawidek disk->d_sync.ds_consumer->index = 0; 22382d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = disk; 22393650be51SPawel Jakub Dawidek 22403650be51SPawel Jakub Dawidek /* 22413650be51SPawel Jakub Dawidek * Allocate memory for synchronization bios and initialize them. 22423650be51SPawel Jakub Dawidek */ 22433650be51SPawel Jakub Dawidek disk->d_sync.ds_bios = malloc(sizeof(struct bio *) * g_raid3_syncreqs, 22443650be51SPawel Jakub Dawidek M_RAID3, M_WAITOK); 22453650be51SPawel Jakub Dawidek for (n = 0; n < g_raid3_syncreqs; n++) { 22463650be51SPawel Jakub Dawidek bp = g_alloc_bio(); 22473650be51SPawel Jakub Dawidek disk->d_sync.ds_bios[n] = bp; 22483650be51SPawel Jakub Dawidek bp->bio_parent = NULL; 22493650be51SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 22503650be51SPawel Jakub Dawidek bp->bio_data = malloc(MAXPHYS, M_RAID3, M_WAITOK); 22513650be51SPawel Jakub Dawidek bp->bio_cflags = 0; 22523650be51SPawel Jakub Dawidek bp->bio_offset = disk->d_sync.ds_offset * (sc->sc_ndisks - 1); 22533650be51SPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 22543650be51SPawel Jakub Dawidek disk->d_sync.ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 22553650be51SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 22563650be51SPawel Jakub Dawidek bp->bio_from = disk->d_sync.ds_consumer; 22573650be51SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 2258ef25813dSRuslan Ermilov bp->bio_caller1 = (void *)(uintptr_t)n; 22593650be51SPawel Jakub Dawidek } 22603650be51SPawel Jakub Dawidek 22613650be51SPawel Jakub Dawidek /* Set the number of in-flight synchronization requests. */ 22623650be51SPawel Jakub Dawidek disk->d_sync.ds_inflight = g_raid3_syncreqs; 22633650be51SPawel Jakub Dawidek 22643650be51SPawel Jakub Dawidek /* 22653650be51SPawel Jakub Dawidek * Fire off first synchronization requests. 22663650be51SPawel Jakub Dawidek */ 22673650be51SPawel Jakub Dawidek for (n = 0; n < g_raid3_syncreqs; n++) { 22683650be51SPawel Jakub Dawidek bp = disk->d_sync.ds_bios[n]; 22693650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 22703650be51SPawel Jakub Dawidek disk->d_sync.ds_consumer->index++; 22713650be51SPawel Jakub Dawidek /* 22723650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a regular request. 22733650be51SPawel Jakub Dawidek */ 22743650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 22753650be51SPawel Jakub Dawidek g_raid3_sync_delay(sc, bp); 22763650be51SPawel Jakub Dawidek else 22773650be51SPawel Jakub Dawidek g_io_request(bp, disk->d_sync.ds_consumer); 22783650be51SPawel Jakub Dawidek } 22792d1661a5SPawel Jakub Dawidek } 22802d1661a5SPawel Jakub Dawidek 22812d1661a5SPawel Jakub Dawidek /* 22822d1661a5SPawel Jakub Dawidek * Stop synchronization process. 22832d1661a5SPawel Jakub Dawidek * type: 0 - synchronization finished 22842d1661a5SPawel Jakub Dawidek * 1 - synchronization stopped 22852d1661a5SPawel Jakub Dawidek */ 22862d1661a5SPawel Jakub Dawidek static void 22872d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(struct g_raid3_softc *sc, int type) 22882d1661a5SPawel Jakub Dawidek { 22892d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 22903650be51SPawel Jakub Dawidek struct g_consumer *cp; 22912d1661a5SPawel Jakub Dawidek 22923650be51SPawel Jakub Dawidek g_topology_assert_not(); 22933650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 22943650be51SPawel Jakub Dawidek 22952d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 22962d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 22972d1661a5SPawel Jakub Dawidek sc->sc_state)); 22982d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 22992d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = NULL; 23002d1661a5SPawel Jakub Dawidek KASSERT(disk != NULL, ("No disk was synchronized (%s).", sc->sc_name)); 23012d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 23022d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 23032d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 23042d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_consumer == NULL) 23052d1661a5SPawel Jakub Dawidek return; 23062d1661a5SPawel Jakub Dawidek 23072d1661a5SPawel Jakub Dawidek if (type == 0) { 23082d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s finished.", 23093650be51SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 23102d1661a5SPawel Jakub Dawidek } else /* if (type == 1) */ { 23112d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s stopped.", 23123650be51SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 23132d1661a5SPawel Jakub Dawidek } 23143650be51SPawel Jakub Dawidek free(disk->d_sync.ds_bios, M_RAID3); 23153650be51SPawel Jakub Dawidek disk->d_sync.ds_bios = NULL; 23163650be51SPawel Jakub Dawidek cp = disk->d_sync.ds_consumer; 23172d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 23182d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 23193650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); /* Avoid recursion on sc_lock. */ 23203650be51SPawel Jakub Dawidek g_topology_lock(); 23213650be51SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cp); 23223650be51SPawel Jakub Dawidek g_topology_unlock(); 23233650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 23242d1661a5SPawel Jakub Dawidek } 23252d1661a5SPawel Jakub Dawidek 23262d1661a5SPawel Jakub Dawidek static void 23272d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(struct g_raid3_softc *sc) 23282d1661a5SPawel Jakub Dawidek { 23292d1661a5SPawel Jakub Dawidek struct g_provider *pp; 2330113d8e50SAlexander Motin struct g_raid3_disk *disk; 2331113d8e50SAlexander Motin int n; 23322d1661a5SPawel Jakub Dawidek 23333650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 23342d1661a5SPawel Jakub Dawidek 23353650be51SPawel Jakub Dawidek g_topology_lock(); 23362d1661a5SPawel Jakub Dawidek pp = g_new_providerf(sc->sc_geom, "raid3/%s", sc->sc_name); 23372d1661a5SPawel Jakub Dawidek pp->mediasize = sc->sc_mediasize; 23382d1661a5SPawel Jakub Dawidek pp->sectorsize = sc->sc_sectorsize; 2339113d8e50SAlexander Motin pp->stripesize = 0; 2340113d8e50SAlexander Motin pp->stripeoffset = 0; 2341113d8e50SAlexander Motin for (n = 0; n < sc->sc_ndisks; n++) { 2342113d8e50SAlexander Motin disk = &sc->sc_disks[n]; 2343113d8e50SAlexander Motin if (disk->d_consumer && disk->d_consumer->provider && 2344113d8e50SAlexander Motin disk->d_consumer->provider->stripesize > pp->stripesize) { 2345113d8e50SAlexander Motin pp->stripesize = disk->d_consumer->provider->stripesize; 2346113d8e50SAlexander Motin pp->stripeoffset = disk->d_consumer->provider->stripeoffset; 2347113d8e50SAlexander Motin } 2348113d8e50SAlexander Motin } 2349113d8e50SAlexander Motin pp->stripesize *= sc->sc_ndisks - 1; 2350113d8e50SAlexander Motin pp->stripeoffset *= sc->sc_ndisks - 1; 23512d1661a5SPawel Jakub Dawidek sc->sc_provider = pp; 23522d1661a5SPawel Jakub Dawidek g_error_provider(pp, 0); 23533650be51SPawel Jakub Dawidek g_topology_unlock(); 23540cca572eSJohn-Mark Gurney G_RAID3_DEBUG(0, "Device %s launched (%u/%u).", pp->name, 23550cca572eSJohn-Mark Gurney g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE), sc->sc_ndisks); 23560cca572eSJohn-Mark Gurney 23572d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED) 23582d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 23592d1661a5SPawel Jakub Dawidek } 23602d1661a5SPawel Jakub Dawidek 23612d1661a5SPawel Jakub Dawidek static void 23622d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(struct g_raid3_softc *sc) 23632d1661a5SPawel Jakub Dawidek { 23642d1661a5SPawel Jakub Dawidek struct bio *bp; 23652d1661a5SPawel Jakub Dawidek 23663650be51SPawel Jakub Dawidek g_topology_assert_not(); 23672d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider != NULL, ("NULL provider (device=%s).", 23682d1661a5SPawel Jakub Dawidek sc->sc_name)); 23692d1661a5SPawel Jakub Dawidek 23703650be51SPawel Jakub Dawidek g_topology_lock(); 23712d1661a5SPawel Jakub Dawidek g_error_provider(sc->sc_provider, ENXIO); 23722d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 23732d1661a5SPawel Jakub Dawidek while ((bp = bioq_first(&sc->sc_queue)) != NULL) { 23742d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 23752d1661a5SPawel Jakub Dawidek g_io_deliver(bp, ENXIO); 23762d1661a5SPawel Jakub Dawidek } 23772d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 23782d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s destroyed.", sc->sc_name, 23792d1661a5SPawel Jakub Dawidek sc->sc_provider->name); 23802d1661a5SPawel Jakub Dawidek sc->sc_provider->flags |= G_PF_WITHER; 23812d1661a5SPawel Jakub Dawidek g_orphan_provider(sc->sc_provider, ENXIO); 23823650be51SPawel Jakub Dawidek g_topology_unlock(); 23832d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 23842d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 23852d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 23862d1661a5SPawel Jakub Dawidek } 23872d1661a5SPawel Jakub Dawidek 23882d1661a5SPawel Jakub Dawidek static void 23892d1661a5SPawel Jakub Dawidek g_raid3_go(void *arg) 23902d1661a5SPawel Jakub Dawidek { 23912d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 23922d1661a5SPawel Jakub Dawidek 23932d1661a5SPawel Jakub Dawidek sc = arg; 23942d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Force device %s start due to timeout.", sc->sc_name); 23952d1661a5SPawel Jakub Dawidek g_raid3_event_send(sc, 0, 23962d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT | G_RAID3_EVENT_DEVICE); 23972d1661a5SPawel Jakub Dawidek } 23982d1661a5SPawel Jakub Dawidek 23992d1661a5SPawel Jakub Dawidek static u_int 24002d1661a5SPawel Jakub Dawidek g_raid3_determine_state(struct g_raid3_disk *disk) 24012d1661a5SPawel Jakub Dawidek { 24022d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 24032d1661a5SPawel Jakub Dawidek u_int state; 24042d1661a5SPawel Jakub Dawidek 24052d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 24062d1661a5SPawel Jakub Dawidek if (sc->sc_syncid == disk->d_sync.ds_syncid) { 24072d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 24082d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) == 0) { 24092d1661a5SPawel Jakub Dawidek /* Disk does not need synchronization. */ 24102d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_ACTIVE; 24112d1661a5SPawel Jakub Dawidek } else { 24122d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 24132d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 24142d1661a5SPawel Jakub Dawidek (disk->d_flags & 24152d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 24162d1661a5SPawel Jakub Dawidek /* 24172d1661a5SPawel Jakub Dawidek * We can start synchronization from 24182d1661a5SPawel Jakub Dawidek * the stored offset. 24192d1661a5SPawel Jakub Dawidek */ 24202d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 24212d1661a5SPawel Jakub Dawidek } else { 24222d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 24232d1661a5SPawel Jakub Dawidek } 24242d1661a5SPawel Jakub Dawidek } 24252d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < sc->sc_syncid) { 24262d1661a5SPawel Jakub Dawidek /* 24272d1661a5SPawel Jakub Dawidek * Reset all synchronization data for this disk, 24282d1661a5SPawel Jakub Dawidek * because if it even was synchronized, it was 24292d1661a5SPawel Jakub Dawidek * synchronized to disks with different syncid. 24302d1661a5SPawel Jakub Dawidek */ 24312d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 24322d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 24332d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 24342d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 24352d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 24362d1661a5SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 24372d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 24382d1661a5SPawel Jakub Dawidek } else { 24392d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 24402d1661a5SPawel Jakub Dawidek } 24412d1661a5SPawel Jakub Dawidek } else /* if (sc->sc_syncid < disk->d_sync.ds_syncid) */ { 24422d1661a5SPawel Jakub Dawidek /* 24432d1661a5SPawel Jakub Dawidek * Not good, NOT GOOD! 24442d1661a5SPawel Jakub Dawidek * It means that device was started on stale disks 24452d1661a5SPawel Jakub Dawidek * and more fresh disk just arrive. 24463c57a41dSPawel Jakub Dawidek * If there were writes, device is broken, sorry. 24472d1661a5SPawel Jakub Dawidek * I think the best choice here is don't touch 2448776fc0e9SYaroslav Tykhiy * this disk and inform the user loudly. 24492d1661a5SPawel Jakub Dawidek */ 24502d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s was started before the freshest " 24512d1661a5SPawel Jakub Dawidek "disk (%s) arrives!! It will not be connected to the " 24522d1661a5SPawel Jakub Dawidek "running device.", sc->sc_name, 24532d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 24542d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 24552d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_NONE; 24562d1661a5SPawel Jakub Dawidek /* Return immediately, because disk was destroyed. */ 24572d1661a5SPawel Jakub Dawidek return (state); 24582d1661a5SPawel Jakub Dawidek } 24592d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "State for %s disk: %s.", 24602d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(state)); 24612d1661a5SPawel Jakub Dawidek return (state); 24622d1661a5SPawel Jakub Dawidek } 24632d1661a5SPawel Jakub Dawidek 24642d1661a5SPawel Jakub Dawidek /* 24652d1661a5SPawel Jakub Dawidek * Update device state. 24662d1661a5SPawel Jakub Dawidek */ 24672d1661a5SPawel Jakub Dawidek static void 2468d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(struct g_raid3_softc *sc, boolean_t force) 24692d1661a5SPawel Jakub Dawidek { 24702d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 24712d1661a5SPawel Jakub Dawidek u_int state; 24722d1661a5SPawel Jakub Dawidek 24733650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 24742d1661a5SPawel Jakub Dawidek 24752d1661a5SPawel Jakub Dawidek switch (sc->sc_state) { 24762d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_STARTING: 24772d1661a5SPawel Jakub Dawidek { 2478a245a548SPawel Jakub Dawidek u_int n, ndirty, ndisks, genid, syncid; 24792d1661a5SPawel Jakub Dawidek 24802d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider == NULL, 24812d1661a5SPawel Jakub Dawidek ("Non-NULL provider in STARTING state (%s).", sc->sc_name)); 24822d1661a5SPawel Jakub Dawidek /* 24832d1661a5SPawel Jakub Dawidek * Are we ready? We are, if all disks are connected or 24842d1661a5SPawel Jakub Dawidek * one disk is missing and 'force' is true. 24852d1661a5SPawel Jakub Dawidek */ 24862d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, -1) + force == sc->sc_ndisks) { 24872d1661a5SPawel Jakub Dawidek if (!force) 24882d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 24892d1661a5SPawel Jakub Dawidek } else { 24902d1661a5SPawel Jakub Dawidek if (force) { 24912d1661a5SPawel Jakub Dawidek /* 24922d1661a5SPawel Jakub Dawidek * Timeout expired, so destroy device. 24932d1661a5SPawel Jakub Dawidek */ 24942d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 24954ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", 24964ed854e8SPawel Jakub Dawidek __LINE__, sc->sc_rootmount); 24974ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 24984ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 24992d1661a5SPawel Jakub Dawidek } 25002d1661a5SPawel Jakub Dawidek return; 25012d1661a5SPawel Jakub Dawidek } 25022d1661a5SPawel Jakub Dawidek 25032d1661a5SPawel Jakub Dawidek /* 2504a245a548SPawel Jakub Dawidek * Find the biggest genid. 2505a245a548SPawel Jakub Dawidek */ 2506a245a548SPawel Jakub Dawidek genid = 0; 2507a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2508a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2509a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2510a245a548SPawel Jakub Dawidek continue; 2511a245a548SPawel Jakub Dawidek if (disk->d_genid > genid) 2512a245a548SPawel Jakub Dawidek genid = disk->d_genid; 2513a245a548SPawel Jakub Dawidek } 2514a245a548SPawel Jakub Dawidek sc->sc_genid = genid; 2515a245a548SPawel Jakub Dawidek /* 2516a245a548SPawel Jakub Dawidek * Remove all disks without the biggest genid. 2517a245a548SPawel Jakub Dawidek */ 2518a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2519a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2520a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2521a245a548SPawel Jakub Dawidek continue; 2522a245a548SPawel Jakub Dawidek if (disk->d_genid < genid) { 2523a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2524a245a548SPawel Jakub Dawidek "Component %s (device %s) broken, skipping.", 2525a245a548SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 2526a245a548SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 2527a245a548SPawel Jakub Dawidek } 2528a245a548SPawel Jakub Dawidek } 2529a245a548SPawel Jakub Dawidek 2530a245a548SPawel Jakub Dawidek /* 25312d1661a5SPawel Jakub Dawidek * There must be at least 'sc->sc_ndisks - 1' components 25322d1661a5SPawel Jakub Dawidek * with the same syncid and without SYNCHRONIZING flag. 25332d1661a5SPawel Jakub Dawidek */ 25342d1661a5SPawel Jakub Dawidek 25352d1661a5SPawel Jakub Dawidek /* 25362d1661a5SPawel Jakub Dawidek * Find the biggest syncid, number of valid components and 25372d1661a5SPawel Jakub Dawidek * number of dirty components. 25382d1661a5SPawel Jakub Dawidek */ 25392d1661a5SPawel Jakub Dawidek ndirty = ndisks = syncid = 0; 25402d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 25412d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 25422d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 25432d1661a5SPawel Jakub Dawidek continue; 25442d1661a5SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) 25452d1661a5SPawel Jakub Dawidek ndirty++; 25462d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_syncid > syncid) { 25472d1661a5SPawel Jakub Dawidek syncid = disk->d_sync.ds_syncid; 25482d1661a5SPawel Jakub Dawidek ndisks = 0; 25492d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < syncid) { 25502d1661a5SPawel Jakub Dawidek continue; 25512d1661a5SPawel Jakub Dawidek } 25522d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 25532d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) != 0) { 25542d1661a5SPawel Jakub Dawidek continue; 25552d1661a5SPawel Jakub Dawidek } 25562d1661a5SPawel Jakub Dawidek ndisks++; 25572d1661a5SPawel Jakub Dawidek } 25582d1661a5SPawel Jakub Dawidek /* 25592d1661a5SPawel Jakub Dawidek * Do we have enough valid components? 25602d1661a5SPawel Jakub Dawidek */ 25612d1661a5SPawel Jakub Dawidek if (ndisks + 1 < sc->sc_ndisks) { 25622d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 25632d1661a5SPawel Jakub Dawidek "Device %s is broken, too few valid components.", 25642d1661a5SPawel Jakub Dawidek sc->sc_name); 25652d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 25662d1661a5SPawel Jakub Dawidek return; 25672d1661a5SPawel Jakub Dawidek } 25682d1661a5SPawel Jakub Dawidek /* 25692d1661a5SPawel Jakub Dawidek * If there is one DIRTY component and all disks are present, 25702d1661a5SPawel Jakub Dawidek * mark it for synchronization. If there is more than one DIRTY 25712d1661a5SPawel Jakub Dawidek * component, mark parity component for synchronization. 25722d1661a5SPawel Jakub Dawidek */ 25732d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks && ndirty == 1) { 25742d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 25752d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 25762d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 25772d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_DIRTY) == 0) { 25782d1661a5SPawel Jakub Dawidek continue; 25792d1661a5SPawel Jakub Dawidek } 25802d1661a5SPawel Jakub Dawidek disk->d_flags |= 25812d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING; 25822d1661a5SPawel Jakub Dawidek } 25832d1661a5SPawel Jakub Dawidek } else if (ndisks == sc->sc_ndisks && ndirty > 1) { 25842d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 25852d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 25862d1661a5SPawel Jakub Dawidek } 25872d1661a5SPawel Jakub Dawidek 25882d1661a5SPawel Jakub Dawidek sc->sc_syncid = syncid; 25892d1661a5SPawel Jakub Dawidek if (force) { 25902d1661a5SPawel Jakub Dawidek /* Remember to bump syncid on first write. */ 2591ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 25922d1661a5SPawel Jakub Dawidek } 25932d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks) 25942d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 25952d1661a5SPawel Jakub Dawidek else /* if (ndisks == sc->sc_ndisks - 1) */ 25962d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 25972d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s state changed from %s to %s.", 25982d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 25992d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 26002d1661a5SPawel Jakub Dawidek sc->sc_state = state; 26012d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 26022d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 26032d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 26042d1661a5SPawel Jakub Dawidek continue; 26052d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 26062d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, state, G_RAID3_EVENT_DONTWAIT); 2607a245a548SPawel Jakub Dawidek if (state == G_RAID3_DISK_STATE_STALE) 2608ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 26092d1661a5SPawel Jakub Dawidek } 26102d1661a5SPawel Jakub Dawidek break; 26112d1661a5SPawel Jakub Dawidek } 26122d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_DEGRADED: 26132d1661a5SPawel Jakub Dawidek /* 2614ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 26152d1661a5SPawel Jakub Dawidek */ 2616ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2617a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2618a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2619a245a548SPawel Jakub Dawidek } 2620a245a548SPawel Jakub Dawidek 26212d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 26222d1661a5SPawel Jakub Dawidek return; 26232d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < 26242d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 26252d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 26262d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 26272d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 26282d1661a5SPawel Jakub Dawidek return; 26292d1661a5SPawel Jakub Dawidek } 26302d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 26312d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 26322d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 26332d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26342d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 26352d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 26362d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 26372d1661a5SPawel Jakub Dawidek sc->sc_state = state; 26382d1661a5SPawel Jakub Dawidek } 26392d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 26402d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 26414ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 26424ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 26434ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 26444ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 26454ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 26464ed854e8SPawel Jakub Dawidek } 26472d1661a5SPawel Jakub Dawidek break; 26482d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_COMPLETE: 26492d1661a5SPawel Jakub Dawidek /* 2650ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 26512d1661a5SPawel Jakub Dawidek */ 2652ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2653a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2654a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2655a245a548SPawel Jakub Dawidek } 2656a245a548SPawel Jakub Dawidek 26572d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 26582d1661a5SPawel Jakub Dawidek return; 26592d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) >= 26602d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1, 26612d1661a5SPawel Jakub Dawidek ("Too few ACTIVE components in COMPLETE state (device %s).", 26622d1661a5SPawel Jakub Dawidek sc->sc_name)); 26632d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 26642d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 26652d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 26662d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26672d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 26682d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 26692d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 26702d1661a5SPawel Jakub Dawidek sc->sc_state = state; 26712d1661a5SPawel Jakub Dawidek } 26722d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 26732d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 26744ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 26754ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 26764ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 26774ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 26784ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 26794ed854e8SPawel Jakub Dawidek } 26802d1661a5SPawel Jakub Dawidek break; 26812d1661a5SPawel Jakub Dawidek default: 26822d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s).", sc->sc_name, 26832d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state))); 26842d1661a5SPawel Jakub Dawidek break; 26852d1661a5SPawel Jakub Dawidek } 26862d1661a5SPawel Jakub Dawidek } 26872d1661a5SPawel Jakub Dawidek 26882d1661a5SPawel Jakub Dawidek /* 26892d1661a5SPawel Jakub Dawidek * Update disk state and device state if needed. 26902d1661a5SPawel Jakub Dawidek */ 26912d1661a5SPawel Jakub Dawidek #define DISK_STATE_CHANGED() G_RAID3_DEBUG(1, \ 26922d1661a5SPawel Jakub Dawidek "Disk %s state changed from %s to %s (device %s).", \ 26932d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), \ 26942d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state), \ 26952d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state), sc->sc_name) 26962d1661a5SPawel Jakub Dawidek static int 2697d97d5ee9SPawel Jakub Dawidek g_raid3_update_disk(struct g_raid3_disk *disk, u_int state) 26982d1661a5SPawel Jakub Dawidek { 26992d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 27002d1661a5SPawel Jakub Dawidek 27012d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 27023650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 27033650be51SPawel Jakub Dawidek 27042d1661a5SPawel Jakub Dawidek again: 27052d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Changing disk %s state from %s to %s.", 27062d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(disk->d_state), 27072d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state)); 27082d1661a5SPawel Jakub Dawidek switch (state) { 27092d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 27102d1661a5SPawel Jakub Dawidek /* 27112d1661a5SPawel Jakub Dawidek * Possible scenarios: 27122d1661a5SPawel Jakub Dawidek * 1. New disk arrive. 27132d1661a5SPawel Jakub Dawidek */ 27142d1661a5SPawel Jakub Dawidek /* Previous state should be NONE. */ 27152d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NONE, 27162d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27172d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27182d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27192d1661a5SPawel Jakub Dawidek 27202d1661a5SPawel Jakub Dawidek disk->d_state = state; 27210cca572eSJohn-Mark Gurney G_RAID3_DEBUG(1, "Device %s: provider %s detected.", 27222d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27232d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) 27242d1661a5SPawel Jakub Dawidek break; 27252d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27262d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27272d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27282d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27292d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27302d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27312d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 27322d1661a5SPawel Jakub Dawidek if (state != G_RAID3_DISK_STATE_NONE) 27332d1661a5SPawel Jakub Dawidek goto again; 27342d1661a5SPawel Jakub Dawidek break; 27352d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 27362d1661a5SPawel Jakub Dawidek /* 27372d1661a5SPawel Jakub Dawidek * Possible scenarios: 27382d1661a5SPawel Jakub Dawidek * 1. New disk does not need synchronization. 27392d1661a5SPawel Jakub Dawidek * 2. Synchronization process finished successfully. 27402d1661a5SPawel Jakub Dawidek */ 27412d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27422d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27432d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27442d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27452d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27462d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27472d1661a5SPawel Jakub Dawidek /* Previous state should be NEW or SYNCHRONIZING. */ 27482d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW || 27492d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 27502d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27512d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27522d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27532d1661a5SPawel Jakub Dawidek 2754bf31327cSPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 27552d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_SYNCHRONIZING; 27562d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_FORCE_SYNC; 27572d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 0); 27582d1661a5SPawel Jakub Dawidek } 27592d1661a5SPawel Jakub Dawidek disk->d_state = state; 27602d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 27612d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 27620962f942SPawel Jakub Dawidek g_raid3_update_idle(sc, disk); 2763bf31327cSPawel Jakub Dawidek g_raid3_update_metadata(disk); 27640cca572eSJohn-Mark Gurney G_RAID3_DEBUG(1, "Device %s: provider %s activated.", 27652d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27662d1661a5SPawel Jakub Dawidek break; 27672d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 27682d1661a5SPawel Jakub Dawidek /* 27692d1661a5SPawel Jakub Dawidek * Possible scenarios: 27702d1661a5SPawel Jakub Dawidek * 1. Stale disk was connected. 27712d1661a5SPawel Jakub Dawidek */ 27722d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 27732d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 27742d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27752d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27762d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27772d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27782d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27792d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27802d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27812d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27822d1661a5SPawel Jakub Dawidek /* 27832d1661a5SPawel Jakub Dawidek * STALE state is only possible if device is marked 27842d1661a5SPawel Jakub Dawidek * NOAUTOSYNC. 27852d1661a5SPawel Jakub Dawidek */ 27862d1661a5SPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) != 0, 27872d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27882d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27892d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27902d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27912d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27922d1661a5SPawel Jakub Dawidek 27932d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 27942d1661a5SPawel Jakub Dawidek disk->d_state = state; 27952d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27962d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s is stale.", 27972d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27982d1661a5SPawel Jakub Dawidek break; 27992d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 28002d1661a5SPawel Jakub Dawidek /* 28012d1661a5SPawel Jakub Dawidek * Possible scenarios: 28022d1661a5SPawel Jakub Dawidek * 1. Disk which needs synchronization was connected. 28032d1661a5SPawel Jakub Dawidek */ 28042d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 28052d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 28062d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 28072d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28082d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 28092d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 28102d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 28112d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 28122d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28132d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28142d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 28152d1661a5SPawel Jakub Dawidek 28162d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NEW) 28172d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 28182d1661a5SPawel Jakub Dawidek disk->d_state = state; 28192d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) { 28202d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 28212d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 28222d1661a5SPawel Jakub Dawidek } 28232d1661a5SPawel Jakub Dawidek break; 28242d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_DISCONNECTED: 28252d1661a5SPawel Jakub Dawidek /* 28262d1661a5SPawel Jakub Dawidek * Possible scenarios: 28272d1661a5SPawel Jakub Dawidek * 1. Device wasn't running yet, but disk disappear. 28282d1661a5SPawel Jakub Dawidek * 2. Disk was active and disapppear. 28292d1661a5SPawel Jakub Dawidek * 3. Disk disappear during synchronization process. 28302d1661a5SPawel Jakub Dawidek */ 28312d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 28322d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 28332d1661a5SPawel Jakub Dawidek /* 28342d1661a5SPawel Jakub Dawidek * Previous state should be ACTIVE, STALE or 28352d1661a5SPawel Jakub Dawidek * SYNCHRONIZING. 28362d1661a5SPawel Jakub Dawidek */ 28372d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 28382d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_STALE || 28392d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 28402d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 28412d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28422d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28432d1661a5SPawel Jakub Dawidek } else if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) { 28442d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 28452d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 28462d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 28472d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28482d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28492d1661a5SPawel Jakub Dawidek /* 28502d1661a5SPawel Jakub Dawidek * Reset bumping syncid if disk disappeared in STARTING 28512d1661a5SPawel Jakub Dawidek * state. 28522d1661a5SPawel Jakub Dawidek */ 2853ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) 2854a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 28552d1661a5SPawel Jakub Dawidek #ifdef INVARIANTS 28562d1661a5SPawel Jakub Dawidek } else { 28572d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s, %s, %s).", 28582d1661a5SPawel Jakub Dawidek sc->sc_name, 28592d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 28602d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28612d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28622d1661a5SPawel Jakub Dawidek #endif 28632d1661a5SPawel Jakub Dawidek } 28642d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 28652d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s disconnected.", 28662d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 28672d1661a5SPawel Jakub Dawidek 28682d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 28692d1661a5SPawel Jakub Dawidek break; 28702d1661a5SPawel Jakub Dawidek default: 28712d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Unknown state (%u).", state)); 28722d1661a5SPawel Jakub Dawidek break; 28732d1661a5SPawel Jakub Dawidek } 28742d1661a5SPawel Jakub Dawidek return (0); 28752d1661a5SPawel Jakub Dawidek } 28762d1661a5SPawel Jakub Dawidek #undef DISK_STATE_CHANGED 28772d1661a5SPawel Jakub Dawidek 2878ea973705SPawel Jakub Dawidek int 28792d1661a5SPawel Jakub Dawidek g_raid3_read_metadata(struct g_consumer *cp, struct g_raid3_metadata *md) 28802d1661a5SPawel Jakub Dawidek { 28812d1661a5SPawel Jakub Dawidek struct g_provider *pp; 28822d1661a5SPawel Jakub Dawidek u_char *buf; 28832d1661a5SPawel Jakub Dawidek int error; 28842d1661a5SPawel Jakub Dawidek 28852d1661a5SPawel Jakub Dawidek g_topology_assert(); 28862d1661a5SPawel Jakub Dawidek 28872d1661a5SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 28882d1661a5SPawel Jakub Dawidek if (error != 0) 28892d1661a5SPawel Jakub Dawidek return (error); 28902d1661a5SPawel Jakub Dawidek pp = cp->provider; 28912d1661a5SPawel Jakub Dawidek g_topology_unlock(); 28922d1661a5SPawel Jakub Dawidek /* Metadata are stored on last sector. */ 28932d1661a5SPawel Jakub Dawidek buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize, 28942d1661a5SPawel Jakub Dawidek &error); 28952d1661a5SPawel Jakub Dawidek g_topology_lock(); 28962d1661a5SPawel Jakub Dawidek g_access(cp, -1, 0, 0); 28978a4a44b5SMaxim Sobolev if (buf == NULL) { 2898a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot read metadata from %s (error=%d).", 2899a245a548SPawel Jakub Dawidek cp->provider->name, error); 29002d1661a5SPawel Jakub Dawidek return (error); 29012d1661a5SPawel Jakub Dawidek } 29022d1661a5SPawel Jakub Dawidek 29032d1661a5SPawel Jakub Dawidek /* Decode metadata. */ 29042d1661a5SPawel Jakub Dawidek error = raid3_metadata_decode(buf, md); 29052d1661a5SPawel Jakub Dawidek g_free(buf); 29062d1661a5SPawel Jakub Dawidek if (strcmp(md->md_magic, G_RAID3_MAGIC) != 0) 29072d1661a5SPawel Jakub Dawidek return (EINVAL); 2908a245a548SPawel Jakub Dawidek if (md->md_version > G_RAID3_VERSION) { 2909a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2910a245a548SPawel Jakub Dawidek "Kernel module is too old to handle metadata from %s.", 2911a245a548SPawel Jakub Dawidek cp->provider->name); 2912a245a548SPawel Jakub Dawidek return (EINVAL); 2913a245a548SPawel Jakub Dawidek } 29142d1661a5SPawel Jakub Dawidek if (error != 0) { 29152d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "MD5 metadata hash mismatch for provider %s.", 29162d1661a5SPawel Jakub Dawidek cp->provider->name); 29172d1661a5SPawel Jakub Dawidek return (error); 29182d1661a5SPawel Jakub Dawidek } 291995959703SAndrey V. Elsukov if (md->md_sectorsize > MAXPHYS) { 292095959703SAndrey V. Elsukov G_RAID3_DEBUG(0, "The blocksize is too big."); 292195959703SAndrey V. Elsukov return (EINVAL); 292295959703SAndrey V. Elsukov } 29232d1661a5SPawel Jakub Dawidek 29242d1661a5SPawel Jakub Dawidek return (0); 29252d1661a5SPawel Jakub Dawidek } 29262d1661a5SPawel Jakub Dawidek 29272d1661a5SPawel Jakub Dawidek static int 29282d1661a5SPawel Jakub Dawidek g_raid3_check_metadata(struct g_raid3_softc *sc, struct g_provider *pp, 29292d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 29302d1661a5SPawel Jakub Dawidek { 29312d1661a5SPawel Jakub Dawidek 29322d1661a5SPawel Jakub Dawidek if (md->md_no >= sc->sc_ndisks) { 29332d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Invalid disk %s number (no=%u), skipping.", 29342d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 29352d1661a5SPawel Jakub Dawidek return (EINVAL); 29362d1661a5SPawel Jakub Dawidek } 29372d1661a5SPawel Jakub Dawidek if (sc->sc_disks[md->md_no].d_state != G_RAID3_DISK_STATE_NODISK) { 29382d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (no=%u) already exists, skipping.", 29392d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 29402d1661a5SPawel Jakub Dawidek return (EEXIST); 29412d1661a5SPawel Jakub Dawidek } 29422d1661a5SPawel Jakub Dawidek if (md->md_all != sc->sc_ndisks) { 29432d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29442d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29452d1661a5SPawel Jakub Dawidek "md_all", pp->name, sc->sc_name); 29462d1661a5SPawel Jakub Dawidek return (EINVAL); 29472d1661a5SPawel Jakub Dawidek } 294811b2174fSPawel Jakub Dawidek if ((md->md_mediasize % md->md_sectorsize) != 0) { 294911b2174fSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Invalid metadata (mediasize %% sectorsize != " 295011b2174fSPawel Jakub Dawidek "0) on disk %s (device %s), skipping.", pp->name, 295111b2174fSPawel Jakub Dawidek sc->sc_name); 295211b2174fSPawel Jakub Dawidek return (EINVAL); 295311b2174fSPawel Jakub Dawidek } 29542d1661a5SPawel Jakub Dawidek if (md->md_mediasize != sc->sc_mediasize) { 29552d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29562d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29572d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 29582d1661a5SPawel Jakub Dawidek return (EINVAL); 29592d1661a5SPawel Jakub Dawidek } 29602d1661a5SPawel Jakub Dawidek if ((md->md_mediasize % (sc->sc_ndisks - 1)) != 0) { 29612d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29622d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29632d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 29642d1661a5SPawel Jakub Dawidek return (EINVAL); 29652d1661a5SPawel Jakub Dawidek } 29662d1661a5SPawel Jakub Dawidek if ((sc->sc_mediasize / (sc->sc_ndisks - 1)) > pp->mediasize) { 29672d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29682d1661a5SPawel Jakub Dawidek "Invalid size of disk %s (device %s), skipping.", pp->name, 29692d1661a5SPawel Jakub Dawidek sc->sc_name); 29702d1661a5SPawel Jakub Dawidek return (EINVAL); 29712d1661a5SPawel Jakub Dawidek } 29722d1661a5SPawel Jakub Dawidek if ((md->md_sectorsize / pp->sectorsize) < sc->sc_ndisks - 1) { 29732d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29742d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29752d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 29762d1661a5SPawel Jakub Dawidek return (EINVAL); 29772d1661a5SPawel Jakub Dawidek } 29782d1661a5SPawel Jakub Dawidek if (md->md_sectorsize != sc->sc_sectorsize) { 29792d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29802d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29812d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 29822d1661a5SPawel Jakub Dawidek return (EINVAL); 29832d1661a5SPawel Jakub Dawidek } 29842d1661a5SPawel Jakub Dawidek if ((sc->sc_sectorsize % pp->sectorsize) != 0) { 29852d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29862d1661a5SPawel Jakub Dawidek "Invalid sector size of disk %s (device %s), skipping.", 29872d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 29882d1661a5SPawel Jakub Dawidek return (EINVAL); 29892d1661a5SPawel Jakub Dawidek } 29902d1661a5SPawel Jakub Dawidek if ((md->md_mflags & ~G_RAID3_DEVICE_FLAG_MASK) != 0) { 29912d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29922d1661a5SPawel Jakub Dawidek "Invalid device flags on disk %s (device %s), skipping.", 29932d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 29942d1661a5SPawel Jakub Dawidek return (EINVAL); 29952d1661a5SPawel Jakub Dawidek } 2996dba915cfSPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 2997dba915cfSPawel Jakub Dawidek (md->md_mflags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0) { 2998dba915cfSPawel Jakub Dawidek /* 2999dba915cfSPawel Jakub Dawidek * VERIFY and ROUND-ROBIN options are mutally exclusive. 3000dba915cfSPawel Jakub Dawidek */ 3001dba915cfSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Both VERIFY and ROUND-ROBIN flags exist on " 3002dba915cfSPawel Jakub Dawidek "disk %s (device %s), skipping.", pp->name, sc->sc_name); 3003dba915cfSPawel Jakub Dawidek return (EINVAL); 3004dba915cfSPawel Jakub Dawidek } 30052d1661a5SPawel Jakub Dawidek if ((md->md_dflags & ~G_RAID3_DISK_FLAG_MASK) != 0) { 30062d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 30072d1661a5SPawel Jakub Dawidek "Invalid disk flags on disk %s (device %s), skipping.", 30082d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 30092d1661a5SPawel Jakub Dawidek return (EINVAL); 30102d1661a5SPawel Jakub Dawidek } 30112d1661a5SPawel Jakub Dawidek return (0); 30122d1661a5SPawel Jakub Dawidek } 30132d1661a5SPawel Jakub Dawidek 3014ea973705SPawel Jakub Dawidek int 30152d1661a5SPawel Jakub Dawidek g_raid3_add_disk(struct g_raid3_softc *sc, struct g_provider *pp, 30162d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 30172d1661a5SPawel Jakub Dawidek { 30182d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 30192d1661a5SPawel Jakub Dawidek int error; 30202d1661a5SPawel Jakub Dawidek 30213650be51SPawel Jakub Dawidek g_topology_assert_not(); 30222d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Adding disk %s.", pp->name); 30232d1661a5SPawel Jakub Dawidek 30242d1661a5SPawel Jakub Dawidek error = g_raid3_check_metadata(sc, pp, md); 30252d1661a5SPawel Jakub Dawidek if (error != 0) 30262d1661a5SPawel Jakub Dawidek return (error); 3027a245a548SPawel Jakub Dawidek if (sc->sc_state != G_RAID3_DEVICE_STATE_STARTING && 3028a245a548SPawel Jakub Dawidek md->md_genid < sc->sc_genid) { 3029a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Component %s (device %s) broken, skipping.", 3030a245a548SPawel Jakub Dawidek pp->name, sc->sc_name); 3031a245a548SPawel Jakub Dawidek return (EINVAL); 3032a245a548SPawel Jakub Dawidek } 30332d1661a5SPawel Jakub Dawidek disk = g_raid3_init_disk(sc, pp, md, &error); 30342d1661a5SPawel Jakub Dawidek if (disk == NULL) 30352d1661a5SPawel Jakub Dawidek return (error); 30362d1661a5SPawel Jakub Dawidek error = g_raid3_event_send(disk, G_RAID3_DISK_STATE_NEW, 30372d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_WAIT); 3038a245a548SPawel Jakub Dawidek if (error != 0) 30392d1661a5SPawel Jakub Dawidek return (error); 3040a245a548SPawel Jakub Dawidek if (md->md_version < G_RAID3_VERSION) { 3041a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Upgrading metadata on %s (v%d->v%d).", 3042a245a548SPawel Jakub Dawidek pp->name, md->md_version, G_RAID3_VERSION); 3043a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 3044a245a548SPawel Jakub Dawidek } 3045a245a548SPawel Jakub Dawidek return (0); 30462d1661a5SPawel Jakub Dawidek } 30472d1661a5SPawel Jakub Dawidek 3048712fe9bdSPawel Jakub Dawidek static void 3049712fe9bdSPawel Jakub Dawidek g_raid3_destroy_delayed(void *arg, int flag) 3050712fe9bdSPawel Jakub Dawidek { 3051712fe9bdSPawel Jakub Dawidek struct g_raid3_softc *sc; 3052712fe9bdSPawel Jakub Dawidek int error; 3053712fe9bdSPawel Jakub Dawidek 3054712fe9bdSPawel Jakub Dawidek if (flag == EV_CANCEL) { 3055712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Destroying canceled."); 3056712fe9bdSPawel Jakub Dawidek return; 3057712fe9bdSPawel Jakub Dawidek } 3058712fe9bdSPawel Jakub Dawidek sc = arg; 3059712fe9bdSPawel Jakub Dawidek g_topology_unlock(); 3060712fe9bdSPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3061712fe9bdSPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) == 0, 3062712fe9bdSPawel Jakub Dawidek ("DESTROY flag set on %s.", sc->sc_name)); 3063712fe9bdSPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROYING) != 0, 3064712fe9bdSPawel Jakub Dawidek ("DESTROYING flag not set on %s.", sc->sc_name)); 3065712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Destroying %s (delayed).", sc->sc_name); 3066712fe9bdSPawel Jakub Dawidek error = g_raid3_destroy(sc, G_RAID3_DESTROY_SOFT); 3067712fe9bdSPawel Jakub Dawidek if (error != 0) { 3068712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot destroy %s.", sc->sc_name); 3069712fe9bdSPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 3070712fe9bdSPawel Jakub Dawidek } 3071712fe9bdSPawel Jakub Dawidek g_topology_lock(); 3072712fe9bdSPawel Jakub Dawidek } 3073712fe9bdSPawel Jakub Dawidek 30742d1661a5SPawel Jakub Dawidek static int 30752d1661a5SPawel Jakub Dawidek g_raid3_access(struct g_provider *pp, int acr, int acw, int ace) 30762d1661a5SPawel Jakub Dawidek { 30772d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 3078712fe9bdSPawel Jakub Dawidek int dcr, dcw, dce, error = 0; 30792d1661a5SPawel Jakub Dawidek 30802d1661a5SPawel Jakub Dawidek g_topology_assert(); 30812d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access request for %s: r%dw%de%d.", pp->name, acr, 30822d1661a5SPawel Jakub Dawidek acw, ace); 30832d1661a5SPawel Jakub Dawidek 30841f7fec3cSPawel Jakub Dawidek sc = pp->geom->softc; 30851f7fec3cSPawel Jakub Dawidek if (sc == NULL && acr <= 0 && acw <= 0 && ace <= 0) 30861f7fec3cSPawel Jakub Dawidek return (0); 30871f7fec3cSPawel Jakub Dawidek KASSERT(sc != NULL, ("NULL softc (provider=%s).", pp->name)); 30881f7fec3cSPawel Jakub Dawidek 30892d1661a5SPawel Jakub Dawidek dcr = pp->acr + acr; 30902d1661a5SPawel Jakub Dawidek dcw = pp->acw + acw; 30912d1661a5SPawel Jakub Dawidek dce = pp->ace + ace; 30922d1661a5SPawel Jakub Dawidek 30933650be51SPawel Jakub Dawidek g_topology_unlock(); 30943650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3095712fe9bdSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0 || 30963650be51SPawel Jakub Dawidek g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < sc->sc_ndisks - 1) { 30973650be51SPawel Jakub Dawidek if (acr > 0 || acw > 0 || ace > 0) 30983650be51SPawel Jakub Dawidek error = ENXIO; 30993650be51SPawel Jakub Dawidek goto end; 31002d1661a5SPawel Jakub Dawidek } 31010962f942SPawel Jakub Dawidek if (dcw == 0 && !sc->sc_idle) 31023650be51SPawel Jakub Dawidek g_raid3_idle(sc, dcw); 3103712fe9bdSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROYING) != 0) { 3104712fe9bdSPawel Jakub Dawidek if (acr > 0 || acw > 0 || ace > 0) { 3105712fe9bdSPawel Jakub Dawidek error = ENXIO; 3106712fe9bdSPawel Jakub Dawidek goto end; 3107712fe9bdSPawel Jakub Dawidek } 3108712fe9bdSPawel Jakub Dawidek if (dcr == 0 && dcw == 0 && dce == 0) { 3109712fe9bdSPawel Jakub Dawidek g_post_event(g_raid3_destroy_delayed, sc, M_WAITOK, 3110712fe9bdSPawel Jakub Dawidek sc, NULL); 3111712fe9bdSPawel Jakub Dawidek } 3112712fe9bdSPawel Jakub Dawidek } 31133650be51SPawel Jakub Dawidek end: 31143650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 31153650be51SPawel Jakub Dawidek g_topology_lock(); 31163650be51SPawel Jakub Dawidek return (error); 31172d1661a5SPawel Jakub Dawidek } 31182d1661a5SPawel Jakub Dawidek 31192d1661a5SPawel Jakub Dawidek static struct g_geom * 31202d1661a5SPawel Jakub Dawidek g_raid3_create(struct g_class *mp, const struct g_raid3_metadata *md) 31212d1661a5SPawel Jakub Dawidek { 31222d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 31232d1661a5SPawel Jakub Dawidek struct g_geom *gp; 31242d1661a5SPawel Jakub Dawidek int error, timeout; 31252d1661a5SPawel Jakub Dawidek u_int n; 31262d1661a5SPawel Jakub Dawidek 31272d1661a5SPawel Jakub Dawidek g_topology_assert(); 31282d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Creating device %s (id=%u).", md->md_name, md->md_id); 31292d1661a5SPawel Jakub Dawidek 31302d1661a5SPawel Jakub Dawidek /* One disk is minimum. */ 31312d1661a5SPawel Jakub Dawidek if (md->md_all < 1) 31322d1661a5SPawel Jakub Dawidek return (NULL); 31332d1661a5SPawel Jakub Dawidek /* 31342d1661a5SPawel Jakub Dawidek * Action geom. 31352d1661a5SPawel Jakub Dawidek */ 31362d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s", md->md_name); 31372d1661a5SPawel Jakub Dawidek sc = malloc(sizeof(*sc), M_RAID3, M_WAITOK | M_ZERO); 31382d1661a5SPawel Jakub Dawidek sc->sc_disks = malloc(sizeof(struct g_raid3_disk) * md->md_all, M_RAID3, 31392d1661a5SPawel Jakub Dawidek M_WAITOK | M_ZERO); 31402d1661a5SPawel Jakub Dawidek gp->start = g_raid3_start; 31412d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 31422d1661a5SPawel Jakub Dawidek gp->access = g_raid3_access; 31432d1661a5SPawel Jakub Dawidek gp->dumpconf = g_raid3_dumpconf; 31442d1661a5SPawel Jakub Dawidek 31452d1661a5SPawel Jakub Dawidek sc->sc_id = md->md_id; 31462d1661a5SPawel Jakub Dawidek sc->sc_mediasize = md->md_mediasize; 31472d1661a5SPawel Jakub Dawidek sc->sc_sectorsize = md->md_sectorsize; 31482d1661a5SPawel Jakub Dawidek sc->sc_ndisks = md->md_all; 3149f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 31502d1661a5SPawel Jakub Dawidek sc->sc_flags = md->md_mflags; 3151a245a548SPawel Jakub Dawidek sc->sc_bump_id = 0; 31520962f942SPawel Jakub Dawidek sc->sc_idle = 1; 315301f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 31540962f942SPawel Jakub Dawidek sc->sc_writes = 0; 3155afd05d74SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 3156afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_softc = sc; 3157afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_no = n; 31582d1661a5SPawel Jakub Dawidek sc->sc_disks[n].d_state = G_RAID3_DISK_STATE_NODISK; 3159afd05d74SPawel Jakub Dawidek } 31603650be51SPawel Jakub Dawidek sx_init(&sc->sc_lock, "graid3:lock"); 31612d1661a5SPawel Jakub Dawidek bioq_init(&sc->sc_queue); 31622d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_queue_mtx, "graid3:queue", NULL, MTX_DEF); 31633650be51SPawel Jakub Dawidek bioq_init(&sc->sc_regular_delayed); 31643650be51SPawel Jakub Dawidek bioq_init(&sc->sc_inflight); 31653650be51SPawel Jakub Dawidek bioq_init(&sc->sc_sync_delayed); 31662d1661a5SPawel Jakub Dawidek TAILQ_INIT(&sc->sc_events); 31672d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_events_mtx, "graid3:events", NULL, MTX_DEF); 31682d1661a5SPawel Jakub Dawidek callout_init(&sc->sc_callout, CALLOUT_MPSAFE); 31692d1661a5SPawel Jakub Dawidek sc->sc_state = G_RAID3_DEVICE_STATE_STARTING; 31702d1661a5SPawel Jakub Dawidek gp->softc = sc; 31712d1661a5SPawel Jakub Dawidek sc->sc_geom = gp; 31722d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 31732d1661a5SPawel Jakub Dawidek /* 31742d1661a5SPawel Jakub Dawidek * Synchronization geom. 31752d1661a5SPawel Jakub Dawidek */ 31762d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s.sync", md->md_name); 31772d1661a5SPawel Jakub Dawidek gp->softc = sc; 31782d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 31792d1661a5SPawel Jakub Dawidek sc->sc_sync.ds_geom = gp; 31803650be51SPawel Jakub Dawidek 3181ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 3182ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_zone = uma_zcreate("gr3:64k", 3183ed940a82SPawel Jakub Dawidek 65536, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3184ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 31853650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_inuse = 0; 31863650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_max = g_raid3_n64k; 31873650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_requested = 31883650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_failed = 0; 3189ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_zone = uma_zcreate("gr3:16k", 3190ed940a82SPawel Jakub Dawidek 16384, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3191ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 31923650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_inuse = 0; 31933650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_max = g_raid3_n16k; 31943650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_requested = 31953650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_failed = 0; 3196ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_zone = uma_zcreate("gr3:4k", 3197ed940a82SPawel Jakub Dawidek 4096, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3198ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 31993650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_inuse = 0; 32003650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_max = g_raid3_n4k; 32013650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_requested = 32023650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_failed = 0; 3203ed940a82SPawel Jakub Dawidek } 32043650be51SPawel Jakub Dawidek 32053745c395SJulian Elischer error = kproc_create(g_raid3_worker, sc, &sc->sc_worker, 0, 0, 32062d1661a5SPawel Jakub Dawidek "g_raid3 %s", md->md_name); 32072d1661a5SPawel Jakub Dawidek if (error != 0) { 32082d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot create kernel thread for %s.", 32092d1661a5SPawel Jakub Dawidek sc->sc_name); 3210ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 32113650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_64K].sz_zone); 32123650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_16K].sz_zone); 32133650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_4K].sz_zone); 3214ed940a82SPawel Jakub Dawidek } 32152d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_sync.ds_geom); 32162d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 32172d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 32183650be51SPawel Jakub Dawidek sx_destroy(&sc->sc_lock); 32192d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_geom); 32202d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 32212d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 32222d1661a5SPawel Jakub Dawidek return (NULL); 32232d1661a5SPawel Jakub Dawidek } 32242d1661a5SPawel Jakub Dawidek 32250cca572eSJohn-Mark Gurney G_RAID3_DEBUG(1, "Device %s created (%u components, id=%u).", 32260cca572eSJohn-Mark Gurney sc->sc_name, sc->sc_ndisks, sc->sc_id); 32272d1661a5SPawel Jakub Dawidek 3228853a10a5SAndrew Thompson sc->sc_rootmount = root_mount_hold("GRAID3"); 32294ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_hold %p", sc->sc_rootmount); 32304ed854e8SPawel Jakub Dawidek 32312d1661a5SPawel Jakub Dawidek /* 32322d1661a5SPawel Jakub Dawidek * Run timeout. 32332d1661a5SPawel Jakub Dawidek */ 32342d1661a5SPawel Jakub Dawidek timeout = atomic_load_acq_int(&g_raid3_timeout); 32352d1661a5SPawel Jakub Dawidek callout_reset(&sc->sc_callout, timeout * hz, g_raid3_go, sc); 32362d1661a5SPawel Jakub Dawidek return (sc->sc_geom); 32372d1661a5SPawel Jakub Dawidek } 32382d1661a5SPawel Jakub Dawidek 32392d1661a5SPawel Jakub Dawidek int 3240712fe9bdSPawel Jakub Dawidek g_raid3_destroy(struct g_raid3_softc *sc, int how) 32412d1661a5SPawel Jakub Dawidek { 32422d1661a5SPawel Jakub Dawidek struct g_provider *pp; 32432d1661a5SPawel Jakub Dawidek 32443650be51SPawel Jakub Dawidek g_topology_assert_not(); 32452d1661a5SPawel Jakub Dawidek if (sc == NULL) 32462d1661a5SPawel Jakub Dawidek return (ENXIO); 32473650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 32483650be51SPawel Jakub Dawidek 32492d1661a5SPawel Jakub Dawidek pp = sc->sc_provider; 32502d1661a5SPawel Jakub Dawidek if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 3251712fe9bdSPawel Jakub Dawidek switch (how) { 3252712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_SOFT: 32532d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 32542d1661a5SPawel Jakub Dawidek "Device %s is still open (r%dw%de%d).", pp->name, 32552d1661a5SPawel Jakub Dawidek pp->acr, pp->acw, pp->ace); 32562d1661a5SPawel Jakub Dawidek return (EBUSY); 3257712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_DELAYED: 3258712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, 3259712fe9bdSPawel Jakub Dawidek "Device %s will be destroyed on last close.", 3260712fe9bdSPawel Jakub Dawidek pp->name); 3261712fe9bdSPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 3262712fe9bdSPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 3263712fe9bdSPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROYING; 3264712fe9bdSPawel Jakub Dawidek return (EBUSY); 3265712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_HARD: 3266712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s is still open, so it " 3267712fe9bdSPawel Jakub Dawidek "can't be definitely removed.", pp->name); 3268712fe9bdSPawel Jakub Dawidek break; 32692d1661a5SPawel Jakub Dawidek } 32702d1661a5SPawel Jakub Dawidek } 32712d1661a5SPawel Jakub Dawidek 327218486a5eSPawel Jakub Dawidek g_topology_lock(); 327318486a5eSPawel Jakub Dawidek if (sc->sc_geom->softc == NULL) { 327418486a5eSPawel Jakub Dawidek g_topology_unlock(); 327518486a5eSPawel Jakub Dawidek return (0); 327618486a5eSPawel Jakub Dawidek } 327718486a5eSPawel Jakub Dawidek sc->sc_geom->softc = NULL; 327818486a5eSPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 327918486a5eSPawel Jakub Dawidek g_topology_unlock(); 328018486a5eSPawel Jakub Dawidek 32812d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 32822d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_WAIT; 32832d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 32843650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 32852d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 32862d1661a5SPawel Jakub Dawidek wakeup(sc); 32872d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 32882d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 32892d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, &sc->sc_worker); 32902d1661a5SPawel Jakub Dawidek while (sc->sc_worker != NULL) 32912d1661a5SPawel Jakub Dawidek tsleep(&sc->sc_worker, PRIBIO, "r3:destroy", hz / 5); 32922d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Woken up %p.", __func__, &sc->sc_worker); 32933650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 32942d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(sc); 32952d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 32962d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 32972d1661a5SPawel Jakub Dawidek return (0); 32982d1661a5SPawel Jakub Dawidek } 32992d1661a5SPawel Jakub Dawidek 33002d1661a5SPawel Jakub Dawidek static void 33012d1661a5SPawel Jakub Dawidek g_raid3_taste_orphan(struct g_consumer *cp) 33022d1661a5SPawel Jakub Dawidek { 33032d1661a5SPawel Jakub Dawidek 33042d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("%s called while tasting %s.", __func__, 33052d1661a5SPawel Jakub Dawidek cp->provider->name)); 33062d1661a5SPawel Jakub Dawidek } 33072d1661a5SPawel Jakub Dawidek 33082d1661a5SPawel Jakub Dawidek static struct g_geom * 33092d1661a5SPawel Jakub Dawidek g_raid3_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) 33102d1661a5SPawel Jakub Dawidek { 33112d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 33122d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 33132d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 33142d1661a5SPawel Jakub Dawidek struct g_geom *gp; 33152d1661a5SPawel Jakub Dawidek int error; 33162d1661a5SPawel Jakub Dawidek 33172d1661a5SPawel Jakub Dawidek g_topology_assert(); 33182d1661a5SPawel Jakub Dawidek g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name); 33192d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Tasting %s.", pp->name); 33202d1661a5SPawel Jakub Dawidek 33212d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "raid3:taste"); 33222d1661a5SPawel Jakub Dawidek /* This orphan function should be never called. */ 33232d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_taste_orphan; 33242d1661a5SPawel Jakub Dawidek cp = g_new_consumer(gp); 33252d1661a5SPawel Jakub Dawidek g_attach(cp, pp); 33262d1661a5SPawel Jakub Dawidek error = g_raid3_read_metadata(cp, &md); 33272d1661a5SPawel Jakub Dawidek g_detach(cp); 33282d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 33292d1661a5SPawel Jakub Dawidek g_destroy_geom(gp); 33302d1661a5SPawel Jakub Dawidek if (error != 0) 33312d1661a5SPawel Jakub Dawidek return (NULL); 33322d1661a5SPawel Jakub Dawidek gp = NULL; 33332d1661a5SPawel Jakub Dawidek 333490f2be24SAlexander Motin if (md.md_provider[0] != '\0' && 333590f2be24SAlexander Motin !g_compare_names(md.md_provider, pp->name)) 33362d1661a5SPawel Jakub Dawidek return (NULL); 3337e6890985SPawel Jakub Dawidek if (md.md_provsize != 0 && md.md_provsize != pp->mediasize) 3338e6890985SPawel Jakub Dawidek return (NULL); 33392d1661a5SPawel Jakub Dawidek if (g_raid3_debug >= 2) 33402d1661a5SPawel Jakub Dawidek raid3_metadata_dump(&md); 33412d1661a5SPawel Jakub Dawidek 33422d1661a5SPawel Jakub Dawidek /* 33432d1661a5SPawel Jakub Dawidek * Let's check if device already exists. 33442d1661a5SPawel Jakub Dawidek */ 334545d5e85aSPawel Jakub Dawidek sc = NULL; 33462d1661a5SPawel Jakub Dawidek LIST_FOREACH(gp, &mp->geom, geom) { 33472d1661a5SPawel Jakub Dawidek sc = gp->softc; 33482d1661a5SPawel Jakub Dawidek if (sc == NULL) 33492d1661a5SPawel Jakub Dawidek continue; 33502d1661a5SPawel Jakub Dawidek if (sc->sc_sync.ds_geom == gp) 33512d1661a5SPawel Jakub Dawidek continue; 33522d1661a5SPawel Jakub Dawidek if (strcmp(md.md_name, sc->sc_name) != 0) 33532d1661a5SPawel Jakub Dawidek continue; 33542d1661a5SPawel Jakub Dawidek if (md.md_id != sc->sc_id) { 33552d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s already configured.", 33562d1661a5SPawel Jakub Dawidek sc->sc_name); 33572d1661a5SPawel Jakub Dawidek return (NULL); 33582d1661a5SPawel Jakub Dawidek } 33592d1661a5SPawel Jakub Dawidek break; 33602d1661a5SPawel Jakub Dawidek } 33612d1661a5SPawel Jakub Dawidek if (gp == NULL) { 33622d1661a5SPawel Jakub Dawidek gp = g_raid3_create(mp, &md); 33632d1661a5SPawel Jakub Dawidek if (gp == NULL) { 33642d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot create device %s.", 33652d1661a5SPawel Jakub Dawidek md.md_name); 33662d1661a5SPawel Jakub Dawidek return (NULL); 33672d1661a5SPawel Jakub Dawidek } 33682d1661a5SPawel Jakub Dawidek sc = gp->softc; 33692d1661a5SPawel Jakub Dawidek } 33702d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name); 33713650be51SPawel Jakub Dawidek g_topology_unlock(); 33723650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 33732d1661a5SPawel Jakub Dawidek error = g_raid3_add_disk(sc, pp, &md); 33742d1661a5SPawel Jakub Dawidek if (error != 0) { 33752d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot add disk %s to %s (error=%d).", 33762d1661a5SPawel Jakub Dawidek pp->name, gp->name, error); 33772d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NODISK) == 33782d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 3379712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 33803525bb6bSPawel Jakub Dawidek g_raid3_destroy(sc, G_RAID3_DESTROY_HARD); 33813650be51SPawel Jakub Dawidek g_topology_lock(); 33822d1661a5SPawel Jakub Dawidek return (NULL); 33832d1661a5SPawel Jakub Dawidek } 33843650be51SPawel Jakub Dawidek gp = NULL; 33853650be51SPawel Jakub Dawidek } 33863650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 33873650be51SPawel Jakub Dawidek g_topology_lock(); 33882d1661a5SPawel Jakub Dawidek return (gp); 33892d1661a5SPawel Jakub Dawidek } 33902d1661a5SPawel Jakub Dawidek 33912d1661a5SPawel Jakub Dawidek static int 33922d1661a5SPawel Jakub Dawidek g_raid3_destroy_geom(struct gctl_req *req __unused, struct g_class *mp __unused, 33932d1661a5SPawel Jakub Dawidek struct g_geom *gp) 33942d1661a5SPawel Jakub Dawidek { 33953650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 33963650be51SPawel Jakub Dawidek int error; 33972d1661a5SPawel Jakub Dawidek 33983650be51SPawel Jakub Dawidek g_topology_unlock(); 33993650be51SPawel Jakub Dawidek sc = gp->softc; 34003650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3401712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 34023525bb6bSPawel Jakub Dawidek error = g_raid3_destroy(gp->softc, G_RAID3_DESTROY_SOFT); 34033650be51SPawel Jakub Dawidek if (error != 0) 34043650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 34053650be51SPawel Jakub Dawidek g_topology_lock(); 34063650be51SPawel Jakub Dawidek return (error); 34072d1661a5SPawel Jakub Dawidek } 34082d1661a5SPawel Jakub Dawidek 34092d1661a5SPawel Jakub Dawidek static void 34102d1661a5SPawel Jakub Dawidek g_raid3_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 34112d1661a5SPawel Jakub Dawidek struct g_consumer *cp, struct g_provider *pp) 34122d1661a5SPawel Jakub Dawidek { 34132d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 34142d1661a5SPawel Jakub Dawidek 34152d1661a5SPawel Jakub Dawidek g_topology_assert(); 34162d1661a5SPawel Jakub Dawidek 34172d1661a5SPawel Jakub Dawidek sc = gp->softc; 34182d1661a5SPawel Jakub Dawidek if (sc == NULL) 34192d1661a5SPawel Jakub Dawidek return; 34202d1661a5SPawel Jakub Dawidek /* Skip synchronization geom. */ 34212d1661a5SPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 34222d1661a5SPawel Jakub Dawidek return; 34232d1661a5SPawel Jakub Dawidek if (pp != NULL) { 34242d1661a5SPawel Jakub Dawidek /* Nothing here. */ 34252d1661a5SPawel Jakub Dawidek } else if (cp != NULL) { 34262d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 34272d1661a5SPawel Jakub Dawidek 34282d1661a5SPawel Jakub Dawidek disk = cp->private; 34292d1661a5SPawel Jakub Dawidek if (disk == NULL) 34302d1661a5SPawel Jakub Dawidek return; 34313650be51SPawel Jakub Dawidek g_topology_unlock(); 34323650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 34332d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Type>", indent); 34342d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 34352d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "PARITY"); 34362d1661a5SPawel Jakub Dawidek else 34372d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "DATA"); 34382d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Type>\n"); 34392d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Number>%u</Number>\n", indent, 34402d1661a5SPawel Jakub Dawidek (u_int)disk->d_no); 34412d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 34422d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Synchronized>", indent); 34433650be51SPawel Jakub Dawidek if (disk->d_sync.ds_offset == 0) 34442d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "0%%"); 34452d1661a5SPawel Jakub Dawidek else { 34462d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%u%%", 34473650be51SPawel Jakub Dawidek (u_int)((disk->d_sync.ds_offset * 100) / 3448c0d68b6eSPawel Jakub Dawidek (sc->sc_mediasize / (sc->sc_ndisks - 1)))); 34492d1661a5SPawel Jakub Dawidek } 34502d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Synchronized>\n"); 34512d1661a5SPawel Jakub Dawidek } 34522d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, 34532d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid); 3454a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, disk->d_genid); 34552d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 34562d1661a5SPawel Jakub Dawidek if (disk->d_flags == 0) 34572d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 34582d1661a5SPawel Jakub Dawidek else { 34592d1661a5SPawel Jakub Dawidek int first = 1; 34602d1661a5SPawel Jakub Dawidek 34612d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 34622d1661a5SPawel Jakub Dawidek if ((disk->d_flags & (flag)) != 0) { \ 34632d1661a5SPawel Jakub Dawidek if (!first) \ 34642d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 34652d1661a5SPawel Jakub Dawidek else \ 34662d1661a5SPawel Jakub Dawidek first = 0; \ 34672d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 34682d1661a5SPawel Jakub Dawidek } \ 34692d1661a5SPawel Jakub Dawidek } while (0) 34702d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_DIRTY, "DIRTY"); 34712d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_HARDCODED, "HARDCODED"); 34722d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_SYNCHRONIZING, 34732d1661a5SPawel Jakub Dawidek "SYNCHRONIZING"); 34742d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_FORCE_SYNC, "FORCE_SYNC"); 34753aae74ecSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_BROKEN, "BROKEN"); 34762d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 34772d1661a5SPawel Jakub Dawidek } 34782d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 34792d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 34802d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state)); 34813650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 34823650be51SPawel Jakub Dawidek g_topology_lock(); 34832d1661a5SPawel Jakub Dawidek } else { 34843650be51SPawel Jakub Dawidek g_topology_unlock(); 34853650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3486ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 3487ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3488ed940a82SPawel Jakub Dawidek "%s<Zone4kRequested>%u</Zone4kRequested>\n", indent, 3489ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_requested); 3490ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3491ed940a82SPawel Jakub Dawidek "%s<Zone4kFailed>%u</Zone4kFailed>\n", indent, 3492ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_failed); 3493ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3494ed940a82SPawel Jakub Dawidek "%s<Zone16kRequested>%u</Zone16kRequested>\n", indent, 3495ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_requested); 3496ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3497ed940a82SPawel Jakub Dawidek "%s<Zone16kFailed>%u</Zone16kFailed>\n", indent, 3498ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_failed); 3499ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3500ed940a82SPawel Jakub Dawidek "%s<Zone64kRequested>%u</Zone64kRequested>\n", indent, 3501ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_requested); 3502ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3503ed940a82SPawel Jakub Dawidek "%s<Zone64kFailed>%u</Zone64kFailed>\n", indent, 3504ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_failed); 3505ed940a82SPawel Jakub Dawidek } 35062d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id); 35072d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, sc->sc_syncid); 3508a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, sc->sc_genid); 35092d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 35102d1661a5SPawel Jakub Dawidek if (sc->sc_flags == 0) 35112d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 35122d1661a5SPawel Jakub Dawidek else { 35132d1661a5SPawel Jakub Dawidek int first = 1; 35142d1661a5SPawel Jakub Dawidek 35152d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 35162d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & (flag)) != 0) { \ 35172d1661a5SPawel Jakub Dawidek if (!first) \ 35182d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 35192d1661a5SPawel Jakub Dawidek else \ 35202d1661a5SPawel Jakub Dawidek first = 0; \ 35212d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 35222d1661a5SPawel Jakub Dawidek } \ 35232d1661a5SPawel Jakub Dawidek } while (0) 3524501250baSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_NOFAILSYNC, "NOFAILSYNC"); 35252d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_NOAUTOSYNC, "NOAUTOSYNC"); 3526f5a2f7feSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_ROUND_ROBIN, 3527f5a2f7feSPawel Jakub Dawidek "ROUND-ROBIN"); 3528dba915cfSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_VERIFY, "VERIFY"); 35292d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 35302d1661a5SPawel Jakub Dawidek } 35312d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 35322d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Components>%u</Components>\n", indent, 35332d1661a5SPawel Jakub Dawidek sc->sc_ndisks); 353428b31df7SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 353528b31df7SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state)); 35363650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 35373650be51SPawel Jakub Dawidek g_topology_lock(); 35382d1661a5SPawel Jakub Dawidek } 35392d1661a5SPawel Jakub Dawidek } 35402d1661a5SPawel Jakub Dawidek 35419da3072cSPawel Jakub Dawidek static void 35423650be51SPawel Jakub Dawidek g_raid3_shutdown_pre_sync(void *arg, int howto) 35439da3072cSPawel Jakub Dawidek { 35449da3072cSPawel Jakub Dawidek struct g_class *mp; 35459da3072cSPawel Jakub Dawidek struct g_geom *gp, *gp2; 35463650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 3547712fe9bdSPawel Jakub Dawidek int error; 35489da3072cSPawel Jakub Dawidek 35499da3072cSPawel Jakub Dawidek mp = arg; 3550fdc3c6ceSPawel Jakub Dawidek DROP_GIANT(); 35519da3072cSPawel Jakub Dawidek g_topology_lock(); 35529da3072cSPawel Jakub Dawidek LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) { 35533650be51SPawel Jakub Dawidek if ((sc = gp->softc) == NULL) 35549da3072cSPawel Jakub Dawidek continue; 3555712fe9bdSPawel Jakub Dawidek /* Skip synchronization geom. */ 3556712fe9bdSPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 3557712fe9bdSPawel Jakub Dawidek continue; 35583650be51SPawel Jakub Dawidek g_topology_unlock(); 35593650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3560712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 3561712fe9bdSPawel Jakub Dawidek error = g_raid3_destroy(sc, G_RAID3_DESTROY_DELAYED); 3562712fe9bdSPawel Jakub Dawidek if (error != 0) 35633650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 35643650be51SPawel Jakub Dawidek g_topology_lock(); 35653650be51SPawel Jakub Dawidek } 35663650be51SPawel Jakub Dawidek g_topology_unlock(); 35673650be51SPawel Jakub Dawidek PICKUP_GIANT(); 35683650be51SPawel Jakub Dawidek } 35693650be51SPawel Jakub Dawidek 35703650be51SPawel Jakub Dawidek static void 35719da3072cSPawel Jakub Dawidek g_raid3_init(struct g_class *mp) 35729da3072cSPawel Jakub Dawidek { 35739da3072cSPawel Jakub Dawidek 35743650be51SPawel Jakub Dawidek g_raid3_pre_sync = EVENTHANDLER_REGISTER(shutdown_pre_sync, 35753650be51SPawel Jakub Dawidek g_raid3_shutdown_pre_sync, mp, SHUTDOWN_PRI_FIRST); 3576712fe9bdSPawel Jakub Dawidek if (g_raid3_pre_sync == NULL) 35779da3072cSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Warning! Cannot register shutdown event."); 35789da3072cSPawel Jakub Dawidek } 35799da3072cSPawel Jakub Dawidek 35809da3072cSPawel Jakub Dawidek static void 35819da3072cSPawel Jakub Dawidek g_raid3_fini(struct g_class *mp) 35829da3072cSPawel Jakub Dawidek { 35839da3072cSPawel Jakub Dawidek 35843650be51SPawel Jakub Dawidek if (g_raid3_pre_sync != NULL) 35853650be51SPawel Jakub Dawidek EVENTHANDLER_DEREGISTER(shutdown_pre_sync, g_raid3_pre_sync); 35869da3072cSPawel Jakub Dawidek } 35879da3072cSPawel Jakub Dawidek 35882d1661a5SPawel Jakub Dawidek DECLARE_GEOM_CLASS(g_raid3_class, g_raid3); 3589