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> 382d1661a5SPawel Jakub Dawidek #include <sys/sysctl.h> 392d1661a5SPawel Jakub Dawidek #include <sys/malloc.h> 409da3072cSPawel Jakub Dawidek #include <sys/eventhandler.h> 412d1661a5SPawel Jakub Dawidek #include <vm/uma.h> 422d1661a5SPawel Jakub Dawidek #include <geom/geom.h> 432d1661a5SPawel Jakub Dawidek #include <sys/proc.h> 442d1661a5SPawel Jakub Dawidek #include <sys/kthread.h> 4563710c4dSJohn Baldwin #include <sys/sched.h> 462d1661a5SPawel Jakub Dawidek #include <geom/raid3/g_raid3.h> 472d1661a5SPawel Jakub Dawidek 482d1661a5SPawel Jakub Dawidek 495bb84bc8SRobert Watson static MALLOC_DEFINE(M_RAID3, "raid3_data", "GEOM_RAID3 Data"); 502d1661a5SPawel Jakub Dawidek 512d1661a5SPawel Jakub Dawidek SYSCTL_DECL(_kern_geom); 522d1661a5SPawel Jakub Dawidek SYSCTL_NODE(_kern_geom, OID_AUTO, raid3, CTLFLAG_RW, 0, "GEOM_RAID3 stuff"); 53809a9dc6SPawel Jakub Dawidek u_int g_raid3_debug = 0; 546d7b8aecSPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.debug", &g_raid3_debug); 552d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, debug, CTLFLAG_RW, &g_raid3_debug, 0, 562d1661a5SPawel Jakub Dawidek "Debug level"); 57e5e7825cSPawel Jakub Dawidek static u_int g_raid3_timeout = 4; 584d006a98SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.timeout", &g_raid3_timeout); 592d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, timeout, CTLFLAG_RW, &g_raid3_timeout, 602d1661a5SPawel Jakub Dawidek 0, "Time to wait on all raid3 components"); 614d006a98SPawel Jakub Dawidek static u_int g_raid3_idletime = 5; 624d006a98SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.idletime", &g_raid3_idletime); 634d006a98SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, idletime, CTLFLAG_RW, 644d006a98SPawel Jakub Dawidek &g_raid3_idletime, 0, "Mark components as clean when idling"); 653aae74ecSPawel Jakub Dawidek static u_int g_raid3_disconnect_on_failure = 1; 6667cae8aaSPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.disconnect_on_failure", 6767cae8aaSPawel Jakub Dawidek &g_raid3_disconnect_on_failure); 683aae74ecSPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, disconnect_on_failure, CTLFLAG_RW, 693aae74ecSPawel Jakub Dawidek &g_raid3_disconnect_on_failure, 0, "Disconnect component on I/O failure."); 70e6757059SPawel Jakub Dawidek static u_int g_raid3_syncreqs = 2; 713650be51SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.sync_requests", &g_raid3_syncreqs); 723650be51SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, sync_requests, CTLFLAG_RDTUN, 733650be51SPawel Jakub Dawidek &g_raid3_syncreqs, 0, "Parallel synchronization I/O requests."); 74ed940a82SPawel Jakub Dawidek static u_int g_raid3_use_malloc = 0; 75ed940a82SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.use_malloc", &g_raid3_use_malloc); 76ed940a82SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, use_malloc, CTLFLAG_RDTUN, 77ed940a82SPawel Jakub Dawidek &g_raid3_use_malloc, 0, "Use malloc(9) instead of uma(9)."); 782d1661a5SPawel Jakub Dawidek 792d1661a5SPawel Jakub Dawidek static u_int g_raid3_n64k = 50; 802d1661a5SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.n64k", &g_raid3_n64k); 812d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, n64k, CTLFLAG_RD, &g_raid3_n64k, 0, 822d1661a5SPawel Jakub Dawidek "Maximum number of 64kB allocations"); 832d1661a5SPawel Jakub Dawidek static u_int g_raid3_n16k = 200; 842d1661a5SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.n16k", &g_raid3_n16k); 852d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, n16k, CTLFLAG_RD, &g_raid3_n16k, 0, 862d1661a5SPawel Jakub Dawidek "Maximum number of 16kB allocations"); 872d1661a5SPawel Jakub Dawidek static u_int g_raid3_n4k = 1200; 882d1661a5SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.n4k", &g_raid3_n4k); 892d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, n4k, CTLFLAG_RD, &g_raid3_n4k, 0, 902d1661a5SPawel Jakub Dawidek "Maximum number of 4kB allocations"); 912d1661a5SPawel Jakub Dawidek 922d1661a5SPawel Jakub Dawidek SYSCTL_NODE(_kern_geom_raid3, OID_AUTO, stat, CTLFLAG_RW, 0, 932d1661a5SPawel Jakub Dawidek "GEOM_RAID3 statistics"); 94dba915cfSPawel Jakub Dawidek static u_int g_raid3_parity_mismatch = 0; 95dba915cfSPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3_stat, OID_AUTO, parity_mismatch, CTLFLAG_RD, 96dba915cfSPawel Jakub Dawidek &g_raid3_parity_mismatch, 0, "Number of failures in VERIFY mode"); 972d1661a5SPawel Jakub Dawidek 982d1661a5SPawel Jakub Dawidek #define MSLEEP(ident, mtx, priority, wmesg, timeout) do { \ 992d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, (ident)); \ 1002d1661a5SPawel Jakub Dawidek msleep((ident), (mtx), (priority), (wmesg), (timeout)); \ 1012d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Woken up %p.", __func__, (ident)); \ 1022d1661a5SPawel Jakub Dawidek } while (0) 1032d1661a5SPawel Jakub Dawidek 104712fe9bdSPawel Jakub Dawidek static eventhandler_tag g_raid3_pre_sync = NULL; 1052d1661a5SPawel Jakub Dawidek 1062d1661a5SPawel Jakub Dawidek static int g_raid3_destroy_geom(struct gctl_req *req, struct g_class *mp, 1072d1661a5SPawel Jakub Dawidek struct g_geom *gp); 1082d1661a5SPawel Jakub Dawidek static g_taste_t g_raid3_taste; 1099da3072cSPawel Jakub Dawidek static void g_raid3_init(struct g_class *mp); 1109da3072cSPawel Jakub Dawidek static void g_raid3_fini(struct g_class *mp); 1112d1661a5SPawel Jakub Dawidek 1122d1661a5SPawel Jakub Dawidek struct g_class g_raid3_class = { 1132d1661a5SPawel Jakub Dawidek .name = G_RAID3_CLASS_NAME, 1142d1661a5SPawel Jakub Dawidek .version = G_VERSION, 1152d1661a5SPawel Jakub Dawidek .ctlreq = g_raid3_config, 1162d1661a5SPawel Jakub Dawidek .taste = g_raid3_taste, 1179da3072cSPawel Jakub Dawidek .destroy_geom = g_raid3_destroy_geom, 1189da3072cSPawel Jakub Dawidek .init = g_raid3_init, 1199da3072cSPawel Jakub Dawidek .fini = g_raid3_fini 1202d1661a5SPawel Jakub Dawidek }; 1212d1661a5SPawel Jakub Dawidek 1222d1661a5SPawel Jakub Dawidek 1232d1661a5SPawel Jakub Dawidek static void g_raid3_destroy_provider(struct g_raid3_softc *sc); 124d97d5ee9SPawel Jakub Dawidek static int g_raid3_update_disk(struct g_raid3_disk *disk, u_int state); 125d97d5ee9SPawel Jakub Dawidek static void g_raid3_update_device(struct g_raid3_softc *sc, boolean_t force); 1262d1661a5SPawel Jakub Dawidek static void g_raid3_dumpconf(struct sbuf *sb, const char *indent, 1272d1661a5SPawel Jakub Dawidek struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp); 1282d1661a5SPawel Jakub Dawidek static void g_raid3_sync_stop(struct g_raid3_softc *sc, int type); 1293650be51SPawel Jakub Dawidek static int g_raid3_register_request(struct bio *pbp); 1303650be51SPawel Jakub Dawidek static void g_raid3_sync_release(struct g_raid3_softc *sc); 1312d1661a5SPawel Jakub Dawidek 1322d1661a5SPawel Jakub Dawidek 1332d1661a5SPawel Jakub Dawidek static const char * 1342d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(int state) 1352d1661a5SPawel Jakub Dawidek { 1362d1661a5SPawel Jakub Dawidek 1372d1661a5SPawel Jakub Dawidek switch (state) { 1382d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NODISK: 1392d1661a5SPawel Jakub Dawidek return ("NODISK"); 1402d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NONE: 1412d1661a5SPawel Jakub Dawidek return ("NONE"); 1422d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 1432d1661a5SPawel Jakub Dawidek return ("NEW"); 1442d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 1452d1661a5SPawel Jakub Dawidek return ("ACTIVE"); 1462d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 1472d1661a5SPawel Jakub Dawidek return ("STALE"); 1482d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 1492d1661a5SPawel Jakub Dawidek return ("SYNCHRONIZING"); 1502d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_DISCONNECTED: 1512d1661a5SPawel Jakub Dawidek return ("DISCONNECTED"); 1522d1661a5SPawel Jakub Dawidek default: 1532d1661a5SPawel Jakub Dawidek return ("INVALID"); 1542d1661a5SPawel Jakub Dawidek } 1552d1661a5SPawel Jakub Dawidek } 1562d1661a5SPawel Jakub Dawidek 1572d1661a5SPawel Jakub Dawidek static const char * 1582d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(int state) 1592d1661a5SPawel Jakub Dawidek { 1602d1661a5SPawel Jakub Dawidek 1612d1661a5SPawel Jakub Dawidek switch (state) { 1622d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_STARTING: 1632d1661a5SPawel Jakub Dawidek return ("STARTING"); 1642d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_DEGRADED: 1652d1661a5SPawel Jakub Dawidek return ("DEGRADED"); 1662d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_COMPLETE: 1672d1661a5SPawel Jakub Dawidek return ("COMPLETE"); 1682d1661a5SPawel Jakub Dawidek default: 1692d1661a5SPawel Jakub Dawidek return ("INVALID"); 1702d1661a5SPawel Jakub Dawidek } 1712d1661a5SPawel Jakub Dawidek } 1722d1661a5SPawel Jakub Dawidek 1732d1661a5SPawel Jakub Dawidek const char * 1742d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(struct g_raid3_disk *disk) 1752d1661a5SPawel Jakub Dawidek { 1762d1661a5SPawel Jakub Dawidek 1772d1661a5SPawel Jakub Dawidek if (disk->d_consumer == NULL || disk->d_consumer->provider == NULL) 1782d1661a5SPawel Jakub Dawidek return ("[unknown]"); 1792d1661a5SPawel Jakub Dawidek return (disk->d_name); 1802d1661a5SPawel Jakub Dawidek } 1812d1661a5SPawel Jakub Dawidek 182ed940a82SPawel Jakub Dawidek static void * 183ed940a82SPawel Jakub Dawidek g_raid3_alloc(struct g_raid3_softc *sc, size_t size, int flags) 184ed940a82SPawel Jakub Dawidek { 185ed940a82SPawel Jakub Dawidek void *ptr; 186d4060fa6SAlexander Motin enum g_raid3_zones zone; 187ed940a82SPawel Jakub Dawidek 188d4060fa6SAlexander Motin if (g_raid3_use_malloc || 189d4060fa6SAlexander Motin (zone = g_raid3_zone(size)) == G_RAID3_NUM_ZONES) 190ed940a82SPawel Jakub Dawidek ptr = malloc(size, M_RAID3, flags); 191ed940a82SPawel Jakub Dawidek else { 192d4060fa6SAlexander Motin ptr = uma_zalloc_arg(sc->sc_zones[zone].sz_zone, 193d4060fa6SAlexander Motin &sc->sc_zones[zone], flags); 194d4060fa6SAlexander Motin sc->sc_zones[zone].sz_requested++; 195ed940a82SPawel Jakub Dawidek if (ptr == NULL) 196d4060fa6SAlexander Motin sc->sc_zones[zone].sz_failed++; 197ed940a82SPawel Jakub Dawidek } 198ed940a82SPawel Jakub Dawidek return (ptr); 199ed940a82SPawel Jakub Dawidek } 200ed940a82SPawel Jakub Dawidek 201ed940a82SPawel Jakub Dawidek static void 202ed940a82SPawel Jakub Dawidek g_raid3_free(struct g_raid3_softc *sc, void *ptr, size_t size) 203ed940a82SPawel Jakub Dawidek { 204d4060fa6SAlexander Motin enum g_raid3_zones zone; 205ed940a82SPawel Jakub Dawidek 206d4060fa6SAlexander Motin if (g_raid3_use_malloc || 207d4060fa6SAlexander Motin (zone = g_raid3_zone(size)) == G_RAID3_NUM_ZONES) 208ed940a82SPawel Jakub Dawidek free(ptr, M_RAID3); 209ed940a82SPawel Jakub Dawidek else { 210d4060fa6SAlexander Motin uma_zfree_arg(sc->sc_zones[zone].sz_zone, 211d4060fa6SAlexander Motin ptr, &sc->sc_zones[zone]); 212ed940a82SPawel Jakub Dawidek } 213ed940a82SPawel Jakub Dawidek } 214ed940a82SPawel Jakub Dawidek 2153650be51SPawel Jakub Dawidek static int 2163650be51SPawel Jakub Dawidek g_raid3_uma_ctor(void *mem, int size, void *arg, int flags) 2173650be51SPawel Jakub Dawidek { 2183650be51SPawel Jakub Dawidek struct g_raid3_zone *sz = arg; 2193650be51SPawel Jakub Dawidek 2200d14fae5SPawel Jakub Dawidek if (sz->sz_max > 0 && sz->sz_inuse == sz->sz_max) 2213650be51SPawel Jakub Dawidek return (ENOMEM); 2223650be51SPawel Jakub Dawidek sz->sz_inuse++; 2233650be51SPawel Jakub Dawidek return (0); 2243650be51SPawel Jakub Dawidek } 2253650be51SPawel Jakub Dawidek 2263650be51SPawel Jakub Dawidek static void 2273650be51SPawel Jakub Dawidek g_raid3_uma_dtor(void *mem, int size, void *arg) 2283650be51SPawel Jakub Dawidek { 2293650be51SPawel Jakub Dawidek struct g_raid3_zone *sz = arg; 2303650be51SPawel Jakub Dawidek 2313650be51SPawel Jakub Dawidek sz->sz_inuse--; 2323650be51SPawel Jakub Dawidek } 2333650be51SPawel Jakub Dawidek 23406b215fdSAlexander Motin #define g_raid3_xor(src, dst, size) \ 23506b215fdSAlexander Motin _g_raid3_xor((uint64_t *)(src), \ 2362d1661a5SPawel Jakub Dawidek (uint64_t *)(dst), (size_t)size) 2372d1661a5SPawel Jakub Dawidek static void 23806b215fdSAlexander Motin _g_raid3_xor(uint64_t *src, uint64_t *dst, size_t size) 2392d1661a5SPawel Jakub Dawidek { 2402d1661a5SPawel Jakub Dawidek 2412d1661a5SPawel Jakub Dawidek KASSERT((size % 128) == 0, ("Invalid size: %zu.", size)); 2422d1661a5SPawel Jakub Dawidek for (; size > 0; size -= 128) { 24306b215fdSAlexander Motin *dst++ ^= (*src++); 24406b215fdSAlexander Motin *dst++ ^= (*src++); 24506b215fdSAlexander Motin *dst++ ^= (*src++); 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++); 2592d1661a5SPawel Jakub Dawidek } 2602d1661a5SPawel Jakub Dawidek } 2612d1661a5SPawel Jakub Dawidek 262dba915cfSPawel Jakub Dawidek static int 263dba915cfSPawel Jakub Dawidek g_raid3_is_zero(struct bio *bp) 264dba915cfSPawel Jakub Dawidek { 265dba915cfSPawel Jakub Dawidek static const uint64_t zeros[] = { 266dba915cfSPawel Jakub Dawidek 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 267dba915cfSPawel Jakub Dawidek }; 268dba915cfSPawel Jakub Dawidek u_char *addr; 269dba915cfSPawel Jakub Dawidek ssize_t size; 270dba915cfSPawel Jakub Dawidek 271dba915cfSPawel Jakub Dawidek size = bp->bio_length; 272dba915cfSPawel Jakub Dawidek addr = (u_char *)bp->bio_data; 273dba915cfSPawel Jakub Dawidek for (; size > 0; size -= sizeof(zeros), addr += sizeof(zeros)) { 274dba915cfSPawel Jakub Dawidek if (bcmp(addr, zeros, sizeof(zeros)) != 0) 275dba915cfSPawel Jakub Dawidek return (0); 276dba915cfSPawel Jakub Dawidek } 277dba915cfSPawel Jakub Dawidek return (1); 278dba915cfSPawel Jakub Dawidek } 279dba915cfSPawel Jakub Dawidek 2802d1661a5SPawel Jakub Dawidek /* 2812d1661a5SPawel Jakub Dawidek * --- Events handling functions --- 2822d1661a5SPawel Jakub Dawidek * Events in geom_raid3 are used to maintain disks and device status 2832d1661a5SPawel Jakub Dawidek * from one thread to simplify locking. 2842d1661a5SPawel Jakub Dawidek */ 2852d1661a5SPawel Jakub Dawidek static void 2862d1661a5SPawel Jakub Dawidek g_raid3_event_free(struct g_raid3_event *ep) 2872d1661a5SPawel Jakub Dawidek { 2882d1661a5SPawel Jakub Dawidek 2892d1661a5SPawel Jakub Dawidek free(ep, M_RAID3); 2902d1661a5SPawel Jakub Dawidek } 2912d1661a5SPawel Jakub Dawidek 2922d1661a5SPawel Jakub Dawidek int 2932d1661a5SPawel Jakub Dawidek g_raid3_event_send(void *arg, int state, int flags) 2942d1661a5SPawel Jakub Dawidek { 2952d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 2962d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 2972d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 2982d1661a5SPawel Jakub Dawidek int error; 2992d1661a5SPawel Jakub Dawidek 3002d1661a5SPawel Jakub Dawidek ep = malloc(sizeof(*ep), M_RAID3, M_WAITOK); 3012d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sending event %p.", __func__, ep); 3022d1661a5SPawel Jakub Dawidek if ((flags & G_RAID3_EVENT_DEVICE) != 0) { 3032d1661a5SPawel Jakub Dawidek disk = NULL; 3042d1661a5SPawel Jakub Dawidek sc = arg; 3052d1661a5SPawel Jakub Dawidek } else { 3062d1661a5SPawel Jakub Dawidek disk = arg; 3072d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 3082d1661a5SPawel Jakub Dawidek } 3092d1661a5SPawel Jakub Dawidek ep->e_disk = disk; 3102d1661a5SPawel Jakub Dawidek ep->e_state = state; 3112d1661a5SPawel Jakub Dawidek ep->e_flags = flags; 3122d1661a5SPawel Jakub Dawidek ep->e_error = 0; 3132d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3142d1661a5SPawel Jakub Dawidek TAILQ_INSERT_TAIL(&sc->sc_events, ep, e_next); 3152d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3162d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 3172d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 3182d1661a5SPawel Jakub Dawidek wakeup(sc); 3192d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 3202d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 3212d1661a5SPawel Jakub Dawidek if ((flags & G_RAID3_EVENT_DONTWAIT) != 0) 3222d1661a5SPawel Jakub Dawidek return (0); 3233650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 3242d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, ep); 3253650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 3262d1661a5SPawel Jakub Dawidek while ((ep->e_flags & G_RAID3_EVENT_DONE) == 0) { 3272d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3282d1661a5SPawel Jakub Dawidek MSLEEP(ep, &sc->sc_events_mtx, PRIBIO | PDROP, "r3:event", 3292d1661a5SPawel Jakub Dawidek hz * 5); 3302d1661a5SPawel Jakub Dawidek } 3312d1661a5SPawel Jakub Dawidek error = ep->e_error; 3322d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 3333650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3342d1661a5SPawel Jakub Dawidek return (error); 3352d1661a5SPawel Jakub Dawidek } 3362d1661a5SPawel Jakub Dawidek 3372d1661a5SPawel Jakub Dawidek static struct g_raid3_event * 3382d1661a5SPawel Jakub Dawidek g_raid3_event_get(struct g_raid3_softc *sc) 3392d1661a5SPawel Jakub Dawidek { 3402d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 3412d1661a5SPawel Jakub Dawidek 3422d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3432d1661a5SPawel Jakub Dawidek ep = TAILQ_FIRST(&sc->sc_events); 3442d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3452d1661a5SPawel Jakub Dawidek return (ep); 3462d1661a5SPawel Jakub Dawidek } 3472d1661a5SPawel Jakub Dawidek 3482d1661a5SPawel Jakub Dawidek static void 349d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(struct g_raid3_softc *sc, struct g_raid3_event *ep) 350d97d5ee9SPawel Jakub Dawidek { 351d97d5ee9SPawel Jakub Dawidek 352d97d5ee9SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 353d97d5ee9SPawel Jakub Dawidek TAILQ_REMOVE(&sc->sc_events, ep, e_next); 354d97d5ee9SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 355d97d5ee9SPawel Jakub Dawidek } 356d97d5ee9SPawel Jakub Dawidek 357d97d5ee9SPawel Jakub Dawidek static void 3582d1661a5SPawel Jakub Dawidek g_raid3_event_cancel(struct g_raid3_disk *disk) 3592d1661a5SPawel Jakub Dawidek { 3602d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 3612d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep, *tmpep; 3622d1661a5SPawel Jakub Dawidek 3632d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 3643650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 3653650be51SPawel Jakub Dawidek 3662d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3672d1661a5SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(ep, &sc->sc_events, e_next, tmpep) { 3682d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) 3692d1661a5SPawel Jakub Dawidek continue; 3702d1661a5SPawel Jakub Dawidek if (ep->e_disk != disk) 3712d1661a5SPawel Jakub Dawidek continue; 3722d1661a5SPawel Jakub Dawidek TAILQ_REMOVE(&sc->sc_events, ep, e_next); 3732d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) 3742d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 3752d1661a5SPawel Jakub Dawidek else { 3762d1661a5SPawel Jakub Dawidek ep->e_error = ECANCELED; 3772d1661a5SPawel Jakub Dawidek wakeup(ep); 3782d1661a5SPawel Jakub Dawidek } 3792d1661a5SPawel Jakub Dawidek } 3802d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3812d1661a5SPawel Jakub Dawidek } 3822d1661a5SPawel Jakub Dawidek 3832d1661a5SPawel Jakub Dawidek /* 3842d1661a5SPawel Jakub Dawidek * Return the number of disks in the given state. 3852d1661a5SPawel Jakub Dawidek * If state is equal to -1, count all connected disks. 3862d1661a5SPawel Jakub Dawidek */ 3872d1661a5SPawel Jakub Dawidek u_int 3882d1661a5SPawel Jakub Dawidek g_raid3_ndisks(struct g_raid3_softc *sc, int state) 3892d1661a5SPawel Jakub Dawidek { 3902d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 391fa6a7837SDavid E. O'Brien u_int n, ndisks; 3922d1661a5SPawel Jakub Dawidek 3933650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 3943650be51SPawel Jakub Dawidek 395fa6a7837SDavid E. O'Brien for (n = ndisks = 0; n < sc->sc_ndisks; n++) { 3962d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 3972d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 3982d1661a5SPawel Jakub Dawidek continue; 3992d1661a5SPawel Jakub Dawidek if (state == -1 || disk->d_state == state) 4002d1661a5SPawel Jakub Dawidek ndisks++; 4012d1661a5SPawel Jakub Dawidek } 4022d1661a5SPawel Jakub Dawidek return (ndisks); 4032d1661a5SPawel Jakub Dawidek } 4042d1661a5SPawel Jakub Dawidek 4052d1661a5SPawel Jakub Dawidek static u_int 4062d1661a5SPawel Jakub Dawidek g_raid3_nrequests(struct g_raid3_softc *sc, struct g_consumer *cp) 4072d1661a5SPawel Jakub Dawidek { 4082d1661a5SPawel Jakub Dawidek struct bio *bp; 4092d1661a5SPawel Jakub Dawidek u_int nreqs = 0; 4102d1661a5SPawel Jakub Dawidek 4112d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 4122d1661a5SPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 4132d1661a5SPawel Jakub Dawidek if (bp->bio_from == cp) 4142d1661a5SPawel Jakub Dawidek nreqs++; 4152d1661a5SPawel Jakub Dawidek } 4162d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 4172d1661a5SPawel Jakub Dawidek return (nreqs); 4182d1661a5SPawel Jakub Dawidek } 4192d1661a5SPawel Jakub Dawidek 4202d1661a5SPawel Jakub Dawidek static int 4212d1661a5SPawel Jakub Dawidek g_raid3_is_busy(struct g_raid3_softc *sc, struct g_consumer *cp) 4222d1661a5SPawel Jakub Dawidek { 4232d1661a5SPawel Jakub Dawidek 42479e61493SPawel Jakub Dawidek if (cp->index > 0) { 4252d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, 4262d1661a5SPawel Jakub Dawidek "I/O requests for %s exist, can't destroy it now.", 4272d1661a5SPawel Jakub Dawidek cp->provider->name); 4282d1661a5SPawel Jakub Dawidek return (1); 4292d1661a5SPawel Jakub Dawidek } 4302d1661a5SPawel Jakub Dawidek if (g_raid3_nrequests(sc, cp) > 0) { 4312d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, 4322d1661a5SPawel Jakub Dawidek "I/O requests for %s in queue, can't destroy it now.", 4332d1661a5SPawel Jakub Dawidek cp->provider->name); 4342d1661a5SPawel Jakub Dawidek return (1); 4352d1661a5SPawel Jakub Dawidek } 4362d1661a5SPawel Jakub Dawidek return (0); 4372d1661a5SPawel Jakub Dawidek } 4382d1661a5SPawel Jakub Dawidek 4392d1661a5SPawel Jakub Dawidek static void 440d97d5ee9SPawel Jakub Dawidek g_raid3_destroy_consumer(void *arg, int flags __unused) 441d97d5ee9SPawel Jakub Dawidek { 442d97d5ee9SPawel Jakub Dawidek struct g_consumer *cp; 443d97d5ee9SPawel Jakub Dawidek 4443650be51SPawel Jakub Dawidek g_topology_assert(); 4453650be51SPawel Jakub Dawidek 446d97d5ee9SPawel Jakub Dawidek cp = arg; 447d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Consumer %s destroyed.", cp->provider->name); 448d97d5ee9SPawel Jakub Dawidek g_detach(cp); 449d97d5ee9SPawel Jakub Dawidek g_destroy_consumer(cp); 450d97d5ee9SPawel Jakub Dawidek } 451d97d5ee9SPawel Jakub Dawidek 452d97d5ee9SPawel Jakub Dawidek static void 4532d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(struct g_raid3_softc *sc, struct g_consumer *cp) 4542d1661a5SPawel Jakub Dawidek { 455d97d5ee9SPawel Jakub Dawidek struct g_provider *pp; 456d97d5ee9SPawel Jakub Dawidek int retaste_wait; 4572d1661a5SPawel Jakub Dawidek 4582d1661a5SPawel Jakub Dawidek g_topology_assert(); 4592d1661a5SPawel Jakub Dawidek 4602d1661a5SPawel Jakub Dawidek cp->private = NULL; 4612d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 4622d1661a5SPawel Jakub Dawidek return; 4632d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Consumer %s destroyed.", cp->provider->name); 464d97d5ee9SPawel Jakub Dawidek pp = cp->provider; 465d97d5ee9SPawel Jakub Dawidek retaste_wait = 0; 466d97d5ee9SPawel Jakub Dawidek if (cp->acw == 1) { 467d97d5ee9SPawel Jakub Dawidek if ((pp->geom->flags & G_GEOM_WITHER) == 0) 468d97d5ee9SPawel Jakub Dawidek retaste_wait = 1; 469d97d5ee9SPawel Jakub Dawidek } 470d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access %s r%dw%de%d = %d", pp->name, -cp->acr, 471d97d5ee9SPawel Jakub Dawidek -cp->acw, -cp->ace, 0); 472d97d5ee9SPawel Jakub Dawidek if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0) 473d97d5ee9SPawel Jakub Dawidek g_access(cp, -cp->acr, -cp->acw, -cp->ace); 474d97d5ee9SPawel Jakub Dawidek if (retaste_wait) { 475d97d5ee9SPawel Jakub Dawidek /* 476d97d5ee9SPawel Jakub Dawidek * After retaste event was send (inside g_access()), we can send 477d97d5ee9SPawel Jakub Dawidek * event to detach and destroy consumer. 478d97d5ee9SPawel Jakub Dawidek * A class, which has consumer to the given provider connected 479d97d5ee9SPawel Jakub Dawidek * will not receive retaste event for the provider. 480d97d5ee9SPawel Jakub Dawidek * This is the way how I ignore retaste events when I close 481d97d5ee9SPawel Jakub Dawidek * consumers opened for write: I detach and destroy consumer 482d97d5ee9SPawel Jakub Dawidek * after retaste event is sent. 483d97d5ee9SPawel Jakub Dawidek */ 484d97d5ee9SPawel Jakub Dawidek g_post_event(g_raid3_destroy_consumer, cp, M_WAITOK, NULL); 485d97d5ee9SPawel Jakub Dawidek return; 486d97d5ee9SPawel Jakub Dawidek } 487d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Consumer %s destroyed.", pp->name); 4882d1661a5SPawel Jakub Dawidek g_detach(cp); 4892d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 4902d1661a5SPawel Jakub Dawidek } 4912d1661a5SPawel Jakub Dawidek 4922d1661a5SPawel Jakub Dawidek static int 4932d1661a5SPawel Jakub Dawidek g_raid3_connect_disk(struct g_raid3_disk *disk, struct g_provider *pp) 4942d1661a5SPawel Jakub Dawidek { 49534cb1517SPawel Jakub Dawidek struct g_consumer *cp; 4962d1661a5SPawel Jakub Dawidek int error; 4972d1661a5SPawel Jakub Dawidek 4983650be51SPawel Jakub Dawidek g_topology_assert_not(); 4992d1661a5SPawel Jakub Dawidek KASSERT(disk->d_consumer == NULL, 5002d1661a5SPawel Jakub Dawidek ("Disk already connected (device %s).", disk->d_softc->sc_name)); 5012d1661a5SPawel Jakub Dawidek 5023650be51SPawel Jakub Dawidek g_topology_lock(); 50334cb1517SPawel Jakub Dawidek cp = g_new_consumer(disk->d_softc->sc_geom); 50434cb1517SPawel Jakub Dawidek error = g_attach(cp, pp); 505d97d5ee9SPawel Jakub Dawidek if (error != 0) { 50634cb1517SPawel Jakub Dawidek g_destroy_consumer(cp); 5073650be51SPawel Jakub Dawidek g_topology_unlock(); 50834cb1517SPawel Jakub Dawidek return (error); 50934cb1517SPawel Jakub Dawidek } 51034cb1517SPawel Jakub Dawidek error = g_access(cp, 1, 1, 1); 5113650be51SPawel Jakub Dawidek g_topology_unlock(); 51234cb1517SPawel Jakub Dawidek if (error != 0) { 51334cb1517SPawel Jakub Dawidek g_detach(cp); 51434cb1517SPawel Jakub Dawidek g_destroy_consumer(cp); 515d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot open consumer %s (error=%d).", 516d97d5ee9SPawel Jakub Dawidek pp->name, error); 517d97d5ee9SPawel Jakub Dawidek return (error); 518d97d5ee9SPawel Jakub Dawidek } 51934cb1517SPawel Jakub Dawidek disk->d_consumer = cp; 52034cb1517SPawel Jakub Dawidek disk->d_consumer->private = disk; 52134cb1517SPawel Jakub Dawidek disk->d_consumer->index = 0; 5222d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Disk %s connected.", g_raid3_get_diskname(disk)); 5232d1661a5SPawel Jakub Dawidek return (0); 5242d1661a5SPawel Jakub Dawidek } 5252d1661a5SPawel Jakub Dawidek 5262d1661a5SPawel Jakub Dawidek static void 5272d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(struct g_raid3_softc *sc, struct g_consumer *cp) 5282d1661a5SPawel Jakub Dawidek { 5292d1661a5SPawel Jakub Dawidek 5302d1661a5SPawel Jakub Dawidek g_topology_assert(); 5312d1661a5SPawel Jakub Dawidek 5322d1661a5SPawel Jakub Dawidek if (cp == NULL) 5332d1661a5SPawel Jakub Dawidek return; 534d97d5ee9SPawel Jakub Dawidek if (cp->provider != NULL) 5352d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cp); 536d97d5ee9SPawel Jakub Dawidek else 5372d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 5382d1661a5SPawel Jakub Dawidek } 5392d1661a5SPawel Jakub Dawidek 5402d1661a5SPawel Jakub Dawidek /* 5412d1661a5SPawel Jakub Dawidek * Initialize disk. This means allocate memory, create consumer, attach it 5422d1661a5SPawel Jakub Dawidek * to the provider and open access (r1w1e1) to it. 5432d1661a5SPawel Jakub Dawidek */ 5442d1661a5SPawel Jakub Dawidek static struct g_raid3_disk * 5452d1661a5SPawel Jakub Dawidek g_raid3_init_disk(struct g_raid3_softc *sc, struct g_provider *pp, 5462d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md, int *errorp) 5472d1661a5SPawel Jakub Dawidek { 5482d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 5492d1661a5SPawel Jakub Dawidek int error; 5502d1661a5SPawel Jakub Dawidek 5512d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[md->md_no]; 5522d1661a5SPawel Jakub Dawidek error = g_raid3_connect_disk(disk, pp); 55334cb1517SPawel Jakub Dawidek if (error != 0) { 55434cb1517SPawel Jakub Dawidek if (errorp != NULL) 55534cb1517SPawel Jakub Dawidek *errorp = error; 55634cb1517SPawel Jakub Dawidek return (NULL); 55734cb1517SPawel Jakub Dawidek } 5582d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NONE; 5592d1661a5SPawel Jakub Dawidek disk->d_flags = md->md_dflags; 5602d1661a5SPawel Jakub Dawidek if (md->md_provider[0] != '\0') 5612d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_HARDCODED; 5622d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 5632d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = md->md_sync_offset; 5642d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = md->md_sync_offset; 565a245a548SPawel Jakub Dawidek disk->d_genid = md->md_genid; 5662d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = md->md_syncid; 5672d1661a5SPawel Jakub Dawidek if (errorp != NULL) 5682d1661a5SPawel Jakub Dawidek *errorp = 0; 5692d1661a5SPawel Jakub Dawidek return (disk); 5702d1661a5SPawel Jakub Dawidek } 5712d1661a5SPawel Jakub Dawidek 5722d1661a5SPawel Jakub Dawidek static void 5732d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(struct g_raid3_disk *disk) 5742d1661a5SPawel Jakub Dawidek { 5752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 5762d1661a5SPawel Jakub Dawidek 5773650be51SPawel Jakub Dawidek g_topology_assert_not(); 5783650be51SPawel Jakub Dawidek sc = disk->d_softc; 5793650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 5802d1661a5SPawel Jakub Dawidek 5812d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 5822d1661a5SPawel Jakub Dawidek return; 5832d1661a5SPawel Jakub Dawidek g_raid3_event_cancel(disk); 5842d1661a5SPawel Jakub Dawidek switch (disk->d_state) { 5852d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 5862d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 5872d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 5882d1661a5SPawel Jakub Dawidek /* FALLTHROUGH */ 5892d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 5902d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 5912d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 5923650be51SPawel Jakub Dawidek g_topology_lock(); 5932d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, disk->d_consumer); 5943650be51SPawel Jakub Dawidek g_topology_unlock(); 5952d1661a5SPawel Jakub Dawidek disk->d_consumer = NULL; 5962d1661a5SPawel Jakub Dawidek break; 5972d1661a5SPawel Jakub Dawidek default: 5982d1661a5SPawel Jakub Dawidek KASSERT(0 == 1, ("Wrong disk state (%s, %s).", 5992d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 6002d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 6012d1661a5SPawel Jakub Dawidek } 6022d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NODISK; 6032d1661a5SPawel Jakub Dawidek } 6042d1661a5SPawel Jakub Dawidek 6052d1661a5SPawel Jakub Dawidek static void 6062d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(struct g_raid3_softc *sc) 6072d1661a5SPawel Jakub Dawidek { 6082d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 6099da3072cSPawel Jakub Dawidek struct g_raid3_disk *disk; 6102d1661a5SPawel Jakub Dawidek struct g_geom *gp; 6112d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 6122d1661a5SPawel Jakub Dawidek u_int n; 6132d1661a5SPawel Jakub Dawidek 6143650be51SPawel Jakub Dawidek g_topology_assert_not(); 6153650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 6162d1661a5SPawel Jakub Dawidek 6172d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 6182d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 6192d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 6209da3072cSPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 6219da3072cSPawel Jakub Dawidek disk = &sc->sc_disks[n]; 622d97d5ee9SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_NODISK) { 6239da3072cSPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 6249da3072cSPawel Jakub Dawidek g_raid3_update_metadata(disk); 6259da3072cSPawel Jakub Dawidek g_raid3_destroy_disk(disk); 6269da3072cSPawel Jakub Dawidek } 627d97d5ee9SPawel Jakub Dawidek } 6282d1661a5SPawel Jakub Dawidek while ((ep = g_raid3_event_get(sc)) != NULL) { 629d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 6302d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) 6312d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 6322d1661a5SPawel Jakub Dawidek else { 6332d1661a5SPawel Jakub Dawidek ep->e_error = ECANCELED; 6342d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 6352d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, ep); 6362d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 6372d1661a5SPawel Jakub Dawidek wakeup(ep); 6382d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 6392d1661a5SPawel Jakub Dawidek } 6402d1661a5SPawel Jakub Dawidek } 6412d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 6422d1661a5SPawel Jakub Dawidek cp = LIST_FIRST(&sc->sc_sync.ds_geom->consumer); 6433650be51SPawel Jakub Dawidek g_topology_lock(); 6442d1661a5SPawel Jakub Dawidek if (cp != NULL) 6452d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, cp); 6462d1661a5SPawel Jakub Dawidek g_wither_geom(sc->sc_sync.ds_geom, ENXIO); 6472d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s destroyed.", gp->name); 6482d1661a5SPawel Jakub Dawidek g_wither_geom(gp, ENXIO); 6493650be51SPawel Jakub Dawidek g_topology_unlock(); 650ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 6513650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_64K].sz_zone); 6523650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_16K].sz_zone); 6533650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_4K].sz_zone); 654ed940a82SPawel Jakub Dawidek } 6553650be51SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 6563650be51SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 6573650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 6583650be51SPawel Jakub Dawidek sx_destroy(&sc->sc_lock); 6592d1661a5SPawel Jakub Dawidek } 6602d1661a5SPawel Jakub Dawidek 6612d1661a5SPawel Jakub Dawidek static void 6622d1661a5SPawel Jakub Dawidek g_raid3_orphan(struct g_consumer *cp) 6632d1661a5SPawel Jakub Dawidek { 6642d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 6652d1661a5SPawel Jakub Dawidek 6662d1661a5SPawel Jakub Dawidek g_topology_assert(); 6672d1661a5SPawel Jakub Dawidek 6682d1661a5SPawel Jakub Dawidek disk = cp->private; 6692d1661a5SPawel Jakub Dawidek if (disk == NULL) 6702d1661a5SPawel Jakub Dawidek return; 671ea973705SPawel Jakub Dawidek disk->d_softc->sc_bump_id = G_RAID3_BUMP_SYNCID; 6722d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_DISCONNECTED, 6732d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 6742d1661a5SPawel Jakub Dawidek } 6752d1661a5SPawel Jakub Dawidek 6762d1661a5SPawel Jakub Dawidek static int 6772d1661a5SPawel Jakub Dawidek g_raid3_write_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 6782d1661a5SPawel Jakub Dawidek { 6792d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 6802d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 6812d1661a5SPawel Jakub Dawidek off_t offset, length; 6822d1661a5SPawel Jakub Dawidek u_char *sector; 683d97d5ee9SPawel Jakub Dawidek int error = 0; 6842d1661a5SPawel Jakub Dawidek 6853650be51SPawel Jakub Dawidek g_topology_assert_not(); 6862d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 6873650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 6883650be51SPawel Jakub Dawidek 6892d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 6902d1661a5SPawel Jakub Dawidek KASSERT(cp != NULL, ("NULL consumer (%s).", sc->sc_name)); 6912d1661a5SPawel Jakub Dawidek KASSERT(cp->provider != NULL, ("NULL provider (%s).", sc->sc_name)); 6923650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 693d97d5ee9SPawel Jakub Dawidek ("Consumer %s closed? (r%dw%de%d).", cp->provider->name, cp->acr, 694d97d5ee9SPawel Jakub Dawidek cp->acw, cp->ace)); 6952d1661a5SPawel Jakub Dawidek length = cp->provider->sectorsize; 6962d1661a5SPawel Jakub Dawidek offset = cp->provider->mediasize - length; 6972d1661a5SPawel Jakub Dawidek sector = malloc((size_t)length, M_RAID3, M_WAITOK | M_ZERO); 6982d1661a5SPawel Jakub Dawidek if (md != NULL) 6992d1661a5SPawel Jakub Dawidek raid3_metadata_encode(md, sector); 7002d1661a5SPawel Jakub Dawidek error = g_write_data(cp, offset, sector, length); 7012d1661a5SPawel Jakub Dawidek free(sector, M_RAID3); 7022d1661a5SPawel Jakub Dawidek if (error != 0) { 7033aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 7043aae74ecSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot write metadata on %s " 7053aae74ecSPawel Jakub Dawidek "(device=%s, error=%d).", 7063aae74ecSPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name, error); 7073aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 7083aae74ecSPawel Jakub Dawidek } else { 7093aae74ecSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot write metadata on %s " 7103aae74ecSPawel Jakub Dawidek "(device=%s, error=%d).", 7113aae74ecSPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name, error); 7123aae74ecSPawel Jakub Dawidek } 7133aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 7143aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 7153aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 7163aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 7173aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 7182d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 7192d1661a5SPawel Jakub Dawidek } 7203aae74ecSPawel Jakub Dawidek } 7212d1661a5SPawel Jakub Dawidek return (error); 7222d1661a5SPawel Jakub Dawidek } 7232d1661a5SPawel Jakub Dawidek 7242d1661a5SPawel Jakub Dawidek int 7252d1661a5SPawel Jakub Dawidek g_raid3_clear_metadata(struct g_raid3_disk *disk) 7262d1661a5SPawel Jakub Dawidek { 7272d1661a5SPawel Jakub Dawidek int error; 7282d1661a5SPawel Jakub Dawidek 7293650be51SPawel Jakub Dawidek g_topology_assert_not(); 7303650be51SPawel Jakub Dawidek sx_assert(&disk->d_softc->sc_lock, SX_LOCKED); 7313650be51SPawel Jakub Dawidek 7322d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, NULL); 7332d1661a5SPawel Jakub Dawidek if (error == 0) { 7342d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s cleared.", 7352d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 7362d1661a5SPawel Jakub Dawidek } else { 7372d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 7382d1661a5SPawel Jakub Dawidek "Cannot clear metadata on disk %s (error=%d).", 7392d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 7402d1661a5SPawel Jakub Dawidek } 7412d1661a5SPawel Jakub Dawidek return (error); 7422d1661a5SPawel Jakub Dawidek } 7432d1661a5SPawel Jakub Dawidek 7442d1661a5SPawel Jakub Dawidek void 7452d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 7462d1661a5SPawel Jakub Dawidek { 7472d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 748e6890985SPawel Jakub Dawidek struct g_provider *pp; 7492d1661a5SPawel Jakub Dawidek 7502d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 7512d1661a5SPawel Jakub Dawidek strlcpy(md->md_magic, G_RAID3_MAGIC, sizeof(md->md_magic)); 7522d1661a5SPawel Jakub Dawidek md->md_version = G_RAID3_VERSION; 7532d1661a5SPawel Jakub Dawidek strlcpy(md->md_name, sc->sc_name, sizeof(md->md_name)); 7542d1661a5SPawel Jakub Dawidek md->md_id = sc->sc_id; 7552d1661a5SPawel Jakub Dawidek md->md_all = sc->sc_ndisks; 756a245a548SPawel Jakub Dawidek md->md_genid = sc->sc_genid; 7572d1661a5SPawel Jakub Dawidek md->md_mediasize = sc->sc_mediasize; 7582d1661a5SPawel Jakub Dawidek md->md_sectorsize = sc->sc_sectorsize; 7592d1661a5SPawel Jakub Dawidek md->md_mflags = (sc->sc_flags & G_RAID3_DEVICE_FLAG_MASK); 7602d1661a5SPawel Jakub Dawidek md->md_no = disk->d_no; 7612d1661a5SPawel Jakub Dawidek md->md_syncid = disk->d_sync.ds_syncid; 7622d1661a5SPawel Jakub Dawidek md->md_dflags = (disk->d_flags & G_RAID3_DISK_FLAG_MASK); 763c082905bSPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_SYNCHRONIZING) 7642d1661a5SPawel Jakub Dawidek md->md_sync_offset = 0; 765c082905bSPawel Jakub Dawidek else { 766c082905bSPawel Jakub Dawidek md->md_sync_offset = 767c082905bSPawel Jakub Dawidek disk->d_sync.ds_offset_done / (sc->sc_ndisks - 1); 768c082905bSPawel Jakub Dawidek } 769e6890985SPawel Jakub Dawidek if (disk->d_consumer != NULL && disk->d_consumer->provider != NULL) 770e6890985SPawel Jakub Dawidek pp = disk->d_consumer->provider; 771e6890985SPawel Jakub Dawidek else 772e6890985SPawel Jakub Dawidek pp = NULL; 773e6890985SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_HARDCODED) != 0 && pp != NULL) 774e6890985SPawel Jakub Dawidek strlcpy(md->md_provider, pp->name, sizeof(md->md_provider)); 775e6890985SPawel Jakub Dawidek else 7762d1661a5SPawel Jakub Dawidek bzero(md->md_provider, sizeof(md->md_provider)); 777e6890985SPawel Jakub Dawidek if (pp != NULL) 778e6890985SPawel Jakub Dawidek md->md_provsize = pp->mediasize; 779e6890985SPawel Jakub Dawidek else 780e6890985SPawel Jakub Dawidek md->md_provsize = 0; 7812d1661a5SPawel Jakub Dawidek } 7822d1661a5SPawel Jakub Dawidek 7832d1661a5SPawel Jakub Dawidek void 7842d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(struct g_raid3_disk *disk) 7852d1661a5SPawel Jakub Dawidek { 7863650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 7872d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 7882d1661a5SPawel Jakub Dawidek int error; 7892d1661a5SPawel Jakub Dawidek 7903650be51SPawel Jakub Dawidek g_topology_assert_not(); 7913650be51SPawel Jakub Dawidek sc = disk->d_softc; 7923650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 7933650be51SPawel Jakub Dawidek 7942d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(disk, &md); 7952d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, &md); 7962d1661a5SPawel Jakub Dawidek if (error == 0) { 7972d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s updated.", 7982d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 7992d1661a5SPawel Jakub Dawidek } else { 8002d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 8012d1661a5SPawel Jakub Dawidek "Cannot update metadata on disk %s (error=%d).", 8022d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 8032d1661a5SPawel Jakub Dawidek } 8042d1661a5SPawel Jakub Dawidek } 8052d1661a5SPawel Jakub Dawidek 8062d1661a5SPawel Jakub Dawidek static void 807d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(struct g_raid3_softc *sc) 8082d1661a5SPawel Jakub Dawidek { 8092d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 8102d1661a5SPawel Jakub Dawidek u_int n; 8112d1661a5SPawel Jakub Dawidek 8123650be51SPawel Jakub Dawidek g_topology_assert_not(); 8133650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 8142d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 8152d1661a5SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 8162d1661a5SPawel Jakub Dawidek sc->sc_name)); 8172d1661a5SPawel Jakub Dawidek 8182d1661a5SPawel Jakub Dawidek sc->sc_syncid++; 819a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: syncid bumped to %u.", sc->sc_name, 820a245a548SPawel Jakub Dawidek sc->sc_syncid); 8212d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 8222d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 8232d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 8242d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 8252d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 8262d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 8272d1661a5SPawel Jakub Dawidek } 8282d1661a5SPawel Jakub Dawidek } 8292d1661a5SPawel Jakub Dawidek } 8302d1661a5SPawel Jakub Dawidek 8314d006a98SPawel Jakub Dawidek static void 832a245a548SPawel Jakub Dawidek g_raid3_bump_genid(struct g_raid3_softc *sc) 833a245a548SPawel Jakub Dawidek { 834a245a548SPawel Jakub Dawidek struct g_raid3_disk *disk; 835a245a548SPawel Jakub Dawidek u_int n; 836a245a548SPawel Jakub Dawidek 8373650be51SPawel Jakub Dawidek g_topology_assert_not(); 8383650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 839a245a548SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 840a245a548SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 841a245a548SPawel Jakub Dawidek sc->sc_name)); 842a245a548SPawel Jakub Dawidek 843a245a548SPawel Jakub Dawidek sc->sc_genid++; 844a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: genid bumped to %u.", sc->sc_name, 845a245a548SPawel Jakub Dawidek sc->sc_genid); 846a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 847a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 848a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 849a245a548SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 850a245a548SPawel Jakub Dawidek disk->d_genid = sc->sc_genid; 851a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 852a245a548SPawel Jakub Dawidek } 853a245a548SPawel Jakub Dawidek } 854a245a548SPawel Jakub Dawidek } 855a245a548SPawel Jakub Dawidek 8560962f942SPawel Jakub Dawidek static int 8573650be51SPawel Jakub Dawidek g_raid3_idle(struct g_raid3_softc *sc, int acw) 8584d006a98SPawel Jakub Dawidek { 8594d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 8604d006a98SPawel Jakub Dawidek u_int i; 8610962f942SPawel Jakub Dawidek int timeout; 8624d006a98SPawel Jakub Dawidek 8633650be51SPawel Jakub Dawidek g_topology_assert_not(); 8643650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 8653650be51SPawel Jakub Dawidek 8660962f942SPawel Jakub Dawidek if (sc->sc_provider == NULL) 8670962f942SPawel Jakub Dawidek return (0); 868501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0) 869501250baSPawel Jakub Dawidek return (0); 8700962f942SPawel Jakub Dawidek if (sc->sc_idle) 8710962f942SPawel Jakub Dawidek return (0); 8720962f942SPawel Jakub Dawidek if (sc->sc_writes > 0) 8730962f942SPawel Jakub Dawidek return (0); 8743650be51SPawel Jakub Dawidek if (acw > 0 || (acw == -1 && sc->sc_provider->acw > 0)) { 87501f1f41cSPawel Jakub Dawidek timeout = g_raid3_idletime - (time_uptime - sc->sc_last_write); 8760962f942SPawel Jakub Dawidek if (timeout > 0) 8770962f942SPawel Jakub Dawidek return (timeout); 8780962f942SPawel Jakub Dawidek } 8794d006a98SPawel Jakub Dawidek sc->sc_idle = 1; 8804d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 8814d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 8824d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 8834d006a98SPawel Jakub Dawidek continue; 8844d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 8854d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 8864d006a98SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 8874d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 8884d006a98SPawel Jakub Dawidek } 8890962f942SPawel Jakub Dawidek return (0); 8904d006a98SPawel Jakub Dawidek } 8914d006a98SPawel Jakub Dawidek 8924d006a98SPawel Jakub Dawidek static void 8934d006a98SPawel Jakub Dawidek g_raid3_unidle(struct g_raid3_softc *sc) 8944d006a98SPawel Jakub Dawidek { 8954d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 8964d006a98SPawel Jakub Dawidek u_int i; 8974d006a98SPawel Jakub Dawidek 8983650be51SPawel Jakub Dawidek g_topology_assert_not(); 8993650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 9003650be51SPawel Jakub Dawidek 901501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0) 902501250baSPawel Jakub Dawidek return; 9034d006a98SPawel Jakub Dawidek sc->sc_idle = 0; 90401f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 9054d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 9064d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 9074d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 9084d006a98SPawel Jakub Dawidek continue; 9094d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 9104d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 9114d006a98SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 9124d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 9134d006a98SPawel Jakub Dawidek } 9144d006a98SPawel Jakub Dawidek } 9154d006a98SPawel Jakub Dawidek 9162d1661a5SPawel Jakub Dawidek /* 9172d1661a5SPawel Jakub Dawidek * Treat bio_driver1 field in parent bio as list head and field bio_caller1 9182d1661a5SPawel Jakub Dawidek * in child bio as pointer to the next element on the list. 9192d1661a5SPawel Jakub Dawidek */ 9202d1661a5SPawel Jakub Dawidek #define G_RAID3_HEAD_BIO(pbp) (pbp)->bio_driver1 9212d1661a5SPawel Jakub Dawidek 9222d1661a5SPawel Jakub Dawidek #define G_RAID3_NEXT_BIO(cbp) (cbp)->bio_caller1 9232d1661a5SPawel Jakub Dawidek 9242d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_BIO(pbp, bp) \ 9252d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); (bp) != NULL; \ 9262d1661a5SPawel Jakub Dawidek (bp) = G_RAID3_NEXT_BIO(bp)) 9272d1661a5SPawel Jakub Dawidek 9282d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_SAFE_BIO(pbp, bp, tmpbp) \ 9292d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); \ 9302d1661a5SPawel Jakub Dawidek (bp) != NULL && ((tmpbp) = G_RAID3_NEXT_BIO(bp), 1); \ 9312d1661a5SPawel Jakub Dawidek (bp) = (tmpbp)) 9322d1661a5SPawel Jakub Dawidek 9332d1661a5SPawel Jakub Dawidek static void 9342d1661a5SPawel Jakub Dawidek g_raid3_init_bio(struct bio *pbp) 9352d1661a5SPawel Jakub Dawidek { 9362d1661a5SPawel Jakub Dawidek 9372d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = NULL; 9382d1661a5SPawel Jakub Dawidek } 9392d1661a5SPawel Jakub Dawidek 9402d1661a5SPawel Jakub Dawidek static void 941dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(struct bio *cbp) 942dba915cfSPawel Jakub Dawidek { 943dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 944dba915cfSPawel Jakub Dawidek 945dba915cfSPawel Jakub Dawidek pbp = cbp->bio_parent; 946dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) 947dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 948dba915cfSPawel Jakub Dawidek else { 949dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 950dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) { 951dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 952dba915cfSPawel Jakub Dawidek break; 953dba915cfSPawel Jakub Dawidek } 954dba915cfSPawel Jakub Dawidek } 955dba915cfSPawel Jakub Dawidek } 956dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 957dba915cfSPawel Jakub Dawidek } 958dba915cfSPawel Jakub Dawidek 959dba915cfSPawel Jakub Dawidek static void 960dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(struct bio *sbp, struct bio *dbp) 961dba915cfSPawel Jakub Dawidek { 962dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 963dba915cfSPawel Jakub Dawidek 964dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(sbp); 965dba915cfSPawel Jakub Dawidek pbp = dbp->bio_parent; 966dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(sbp) = G_RAID3_NEXT_BIO(dbp); 967dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == dbp) 968dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = sbp; 969dba915cfSPawel Jakub Dawidek else { 970dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 971dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == dbp) { 972dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = sbp; 973dba915cfSPawel Jakub Dawidek break; 974dba915cfSPawel Jakub Dawidek } 975dba915cfSPawel Jakub Dawidek } 976dba915cfSPawel Jakub Dawidek } 977dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(dbp) = NULL; 978dba915cfSPawel Jakub Dawidek } 979dba915cfSPawel Jakub Dawidek 980dba915cfSPawel Jakub Dawidek static void 9812d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(struct g_raid3_softc *sc, struct bio *cbp) 9822d1661a5SPawel Jakub Dawidek { 9832d1661a5SPawel Jakub Dawidek struct bio *bp, *pbp; 9842d1661a5SPawel Jakub Dawidek size_t size; 9852d1661a5SPawel Jakub Dawidek 9862d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 9872d1661a5SPawel Jakub Dawidek pbp->bio_children--; 9882d1661a5SPawel Jakub Dawidek KASSERT(cbp->bio_data != NULL, ("NULL bio_data")); 9892d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 990ed940a82SPawel Jakub Dawidek g_raid3_free(sc, cbp->bio_data, size); 9912d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) { 9922d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 9932d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 9942d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9952d1661a5SPawel Jakub Dawidek } else { 9962d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 9972d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) 9982d1661a5SPawel Jakub Dawidek break; 9992d1661a5SPawel Jakub Dawidek } 1000dba915cfSPawel Jakub Dawidek if (bp != NULL) { 1001dba915cfSPawel Jakub Dawidek KASSERT(G_RAID3_NEXT_BIO(bp) != NULL, 1002dba915cfSPawel Jakub Dawidek ("NULL bp->bio_driver1")); 10032d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 10042d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 1005dba915cfSPawel Jakub Dawidek } 10062d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 10072d1661a5SPawel Jakub Dawidek } 10082d1661a5SPawel Jakub Dawidek } 10092d1661a5SPawel Jakub Dawidek 10102d1661a5SPawel Jakub Dawidek static struct bio * 10112d1661a5SPawel Jakub Dawidek g_raid3_clone_bio(struct g_raid3_softc *sc, struct bio *pbp) 10122d1661a5SPawel Jakub Dawidek { 10132d1661a5SPawel Jakub Dawidek struct bio *bp, *cbp; 10142d1661a5SPawel Jakub Dawidek size_t size; 10153650be51SPawel Jakub Dawidek int memflag; 10162d1661a5SPawel Jakub Dawidek 10172d1661a5SPawel Jakub Dawidek cbp = g_clone_bio(pbp); 10182d1661a5SPawel Jakub Dawidek if (cbp == NULL) 10192d1661a5SPawel Jakub Dawidek return (NULL); 10202d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 10213650be51SPawel Jakub Dawidek if ((pbp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) != 0) 10223650be51SPawel Jakub Dawidek memflag = M_WAITOK; 10232d1661a5SPawel Jakub Dawidek else 10243650be51SPawel Jakub Dawidek memflag = M_NOWAIT; 1025ed940a82SPawel Jakub Dawidek cbp->bio_data = g_raid3_alloc(sc, size, memflag); 10263650be51SPawel Jakub Dawidek if (cbp->bio_data == NULL) { 10272d1661a5SPawel Jakub Dawidek pbp->bio_children--; 10282d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 10292d1661a5SPawel Jakub Dawidek return (NULL); 10302d1661a5SPawel Jakub Dawidek } 10312d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 10322d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == NULL) 10332d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = cbp; 10342d1661a5SPawel Jakub Dawidek else { 10352d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 10362d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == NULL) { 10372d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = cbp; 10382d1661a5SPawel Jakub Dawidek break; 10392d1661a5SPawel Jakub Dawidek } 10402d1661a5SPawel Jakub Dawidek } 10412d1661a5SPawel Jakub Dawidek } 10422d1661a5SPawel Jakub Dawidek return (cbp); 10432d1661a5SPawel Jakub Dawidek } 10442d1661a5SPawel Jakub Dawidek 10452d1661a5SPawel Jakub Dawidek static void 10462d1661a5SPawel Jakub Dawidek g_raid3_scatter(struct bio *pbp) 10472d1661a5SPawel Jakub Dawidek { 10482d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 10492d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1050ee40c7aaSPawel Jakub Dawidek struct bio *bp, *cbp, *tmpbp; 10512d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 105206b215fdSAlexander Motin int first; 10532d1661a5SPawel Jakub Dawidek 10542d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 10552d1661a5SPawel Jakub Dawidek bp = NULL; 10562d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10572d1661a5SPawel Jakub Dawidek /* 10582d1661a5SPawel Jakub Dawidek * Find bio for which we should calculate data. 10592d1661a5SPawel Jakub Dawidek */ 10602d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10612d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 10622d1661a5SPawel Jakub Dawidek bp = cbp; 10632d1661a5SPawel Jakub Dawidek break; 10642d1661a5SPawel Jakub Dawidek } 10652d1661a5SPawel Jakub Dawidek } 10662d1661a5SPawel Jakub Dawidek KASSERT(bp != NULL, ("NULL parity bio.")); 10672d1661a5SPawel Jakub Dawidek } 10682d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 10692d1661a5SPawel Jakub Dawidek cadd = padd = 0; 10702d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 10712d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10722d1661a5SPawel Jakub Dawidek if (cbp == bp) 10732d1661a5SPawel Jakub Dawidek continue; 10742d1661a5SPawel Jakub Dawidek bcopy(pbp->bio_data + padd, cbp->bio_data + cadd, atom); 10752d1661a5SPawel Jakub Dawidek padd += atom; 10762d1661a5SPawel Jakub Dawidek } 10772d1661a5SPawel Jakub Dawidek cadd += atom; 10782d1661a5SPawel Jakub Dawidek } 10792d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10802d1661a5SPawel Jakub Dawidek /* 10812d1661a5SPawel Jakub Dawidek * Calculate parity. 10822d1661a5SPawel Jakub Dawidek */ 108306b215fdSAlexander Motin first = 1; 10842d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 10852d1661a5SPawel Jakub Dawidek if (cbp == bp) 10862d1661a5SPawel Jakub Dawidek continue; 108706b215fdSAlexander Motin if (first) { 108806b215fdSAlexander Motin bcopy(cbp->bio_data, bp->bio_data, 10892d1661a5SPawel Jakub Dawidek bp->bio_length); 109006b215fdSAlexander Motin first = 0; 109106b215fdSAlexander Motin } else { 109206b215fdSAlexander Motin g_raid3_xor(cbp->bio_data, bp->bio_data, 109306b215fdSAlexander Motin bp->bio_length); 109406b215fdSAlexander Motin } 10952d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_NODISK) != 0) 10962d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 10972d1661a5SPawel Jakub Dawidek } 10982d1661a5SPawel Jakub Dawidek } 1099ee40c7aaSPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 11002d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 11012d1661a5SPawel Jakub Dawidek 11022d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 11032d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 11042d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 11052d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 11063650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 1107d97d5ee9SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 1108d97d5ee9SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 110979e61493SPawel Jakub Dawidek cp->index++; 11100962f942SPawel Jakub Dawidek sc->sc_writes++; 11112d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 11122d1661a5SPawel Jakub Dawidek } 11132d1661a5SPawel Jakub Dawidek } 11142d1661a5SPawel Jakub Dawidek 11152d1661a5SPawel Jakub Dawidek static void 11162d1661a5SPawel Jakub Dawidek g_raid3_gather(struct bio *pbp) 11172d1661a5SPawel Jakub Dawidek { 11182d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 11192d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1120f5a2f7feSPawel Jakub Dawidek struct bio *xbp, *fbp, *cbp; 11212d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 11222d1661a5SPawel Jakub Dawidek 11232d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 11242d1661a5SPawel Jakub Dawidek /* 1125f5a2f7feSPawel Jakub Dawidek * Find bio for which we have to calculate data. 11262d1661a5SPawel Jakub Dawidek * While going through this path, check if all requests 11272d1661a5SPawel Jakub Dawidek * succeeded, if not, deny whole request. 1128f5a2f7feSPawel Jakub Dawidek * If we're in COMPLETE mode, we allow one request to fail, 1129f5a2f7feSPawel Jakub Dawidek * so if we find one, we're sending it to the parity consumer. 1130f5a2f7feSPawel Jakub Dawidek * If there are more failed requests, we deny whole request. 11312d1661a5SPawel Jakub Dawidek */ 1132f5a2f7feSPawel Jakub Dawidek xbp = fbp = NULL; 11332d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 11342d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 1135f5a2f7feSPawel Jakub Dawidek KASSERT(xbp == NULL, ("More than one parity bio.")); 1136f5a2f7feSPawel Jakub Dawidek xbp = cbp; 11372d1661a5SPawel Jakub Dawidek } 11382d1661a5SPawel Jakub Dawidek if (cbp->bio_error == 0) 11392d1661a5SPawel Jakub Dawidek continue; 11402d1661a5SPawel Jakub Dawidek /* 11412d1661a5SPawel Jakub Dawidek * Found failed request. 11422d1661a5SPawel Jakub Dawidek */ 1143f5a2f7feSPawel Jakub Dawidek if (fbp == NULL) { 1144f5a2f7feSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_DEGRADED) != 0) { 11452d1661a5SPawel Jakub Dawidek /* 1146f5a2f7feSPawel Jakub Dawidek * We are already in degraded mode, so we can't 1147f5a2f7feSPawel Jakub Dawidek * accept any failures. 11482d1661a5SPawel Jakub Dawidek */ 1149f5a2f7feSPawel Jakub Dawidek if (pbp->bio_error == 0) 115017fec17eSPawel Jakub Dawidek pbp->bio_error = cbp->bio_error; 11512d1661a5SPawel Jakub Dawidek } else { 1152f5a2f7feSPawel Jakub Dawidek fbp = cbp; 11532d1661a5SPawel Jakub Dawidek } 1154f5a2f7feSPawel Jakub Dawidek } else { 11552d1661a5SPawel Jakub Dawidek /* 11562d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 11572d1661a5SPawel Jakub Dawidek */ 11582d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 1159f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11602d1661a5SPawel Jakub Dawidek } 11613aae74ecSPawel Jakub Dawidek disk = cbp->bio_caller2; 11623aae74ecSPawel Jakub Dawidek if (disk == NULL) 11633aae74ecSPawel Jakub Dawidek continue; 11643aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 11653aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 11663aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, "Request failed (error=%d).", 11673aae74ecSPawel Jakub Dawidek cbp->bio_error); 11683aae74ecSPawel Jakub Dawidek } else { 11693aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(1, cbp, "Request failed (error=%d).", 11703aae74ecSPawel Jakub Dawidek cbp->bio_error); 11713aae74ecSPawel Jakub Dawidek } 11723aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 11733aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 11743aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 11753aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 11763aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 11773aae74ecSPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 11783aae74ecSPawel Jakub Dawidek } 11792d1661a5SPawel Jakub Dawidek } 11802d1661a5SPawel Jakub Dawidek if (pbp->bio_error != 0) 11812d1661a5SPawel Jakub Dawidek goto finish; 1182dba915cfSPawel Jakub Dawidek if (fbp != NULL && (pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1183dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_VERIFY; 1184dba915cfSPawel Jakub Dawidek if (xbp != fbp) 1185dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(xbp, fbp); 1186dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, fbp); 1187dba915cfSPawel Jakub Dawidek } else if (fbp != NULL) { 11882d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 11892d1661a5SPawel Jakub Dawidek 11902d1661a5SPawel Jakub Dawidek /* 11912d1661a5SPawel Jakub Dawidek * One request failed, so send the same request to 11922d1661a5SPawel Jakub Dawidek * the parity consumer. 11932d1661a5SPawel Jakub Dawidek */ 1194f5a2f7feSPawel Jakub Dawidek disk = pbp->bio_driver2; 11952d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 1196f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11972d1661a5SPawel Jakub Dawidek goto finish; 11982d1661a5SPawel Jakub Dawidek } 11992d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 12002d1661a5SPawel Jakub Dawidek pbp->bio_inbed--; 1201f5a2f7feSPawel Jakub Dawidek fbp->bio_flags &= ~(BIO_DONE | BIO_ERROR); 1202f5a2f7feSPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 1203f5a2f7feSPawel Jakub Dawidek fbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1204f5a2f7feSPawel Jakub Dawidek fbp->bio_error = 0; 1205f5a2f7feSPawel Jakub Dawidek fbp->bio_completed = 0; 1206f5a2f7feSPawel Jakub Dawidek fbp->bio_children = 0; 1207f5a2f7feSPawel Jakub Dawidek fbp->bio_inbed = 0; 12082d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 1209f5a2f7feSPawel Jakub Dawidek fbp->bio_caller2 = disk; 1210f5a2f7feSPawel Jakub Dawidek fbp->bio_to = cp->provider; 1211f5a2f7feSPawel Jakub Dawidek G_RAID3_LOGREQ(3, fbp, "Sending request (recover)."); 12123650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 12132d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 12142d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 121579e61493SPawel Jakub Dawidek cp->index++; 1216f5a2f7feSPawel Jakub Dawidek g_io_request(fbp, cp); 12172d1661a5SPawel Jakub Dawidek return; 12182d1661a5SPawel Jakub Dawidek } 1219f5a2f7feSPawel Jakub Dawidek if (xbp != NULL) { 1220f5a2f7feSPawel Jakub Dawidek /* 1221f5a2f7feSPawel Jakub Dawidek * Calculate parity. 1222f5a2f7feSPawel Jakub Dawidek */ 1223f5a2f7feSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 1224f5a2f7feSPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) 1225f5a2f7feSPawel Jakub Dawidek continue; 122606b215fdSAlexander Motin g_raid3_xor(cbp->bio_data, xbp->bio_data, 1227f5a2f7feSPawel Jakub Dawidek xbp->bio_length); 1228f5a2f7feSPawel Jakub Dawidek } 1229f5a2f7feSPawel Jakub Dawidek xbp->bio_cflags &= ~G_RAID3_BIO_CFLAG_PARITY; 1230dba915cfSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1231dba915cfSPawel Jakub Dawidek if (!g_raid3_is_zero(xbp)) { 1232dba915cfSPawel Jakub Dawidek g_raid3_parity_mismatch++; 1233dba915cfSPawel Jakub Dawidek pbp->bio_error = EIO; 1234dba915cfSPawel Jakub Dawidek goto finish; 1235dba915cfSPawel Jakub Dawidek } 1236dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, xbp); 1237dba915cfSPawel Jakub Dawidek } 12382d1661a5SPawel Jakub Dawidek } 12392d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 12402d1661a5SPawel Jakub Dawidek cadd = padd = 0; 12412d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 12422d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 12432d1661a5SPawel Jakub Dawidek bcopy(cbp->bio_data + cadd, pbp->bio_data + padd, atom); 12442d1661a5SPawel Jakub Dawidek pbp->bio_completed += atom; 12452d1661a5SPawel Jakub Dawidek padd += atom; 12462d1661a5SPawel Jakub Dawidek } 12472d1661a5SPawel Jakub Dawidek cadd += atom; 12482d1661a5SPawel Jakub Dawidek } 12492d1661a5SPawel Jakub Dawidek finish: 12502d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 12512d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 12524cf67afeSPawel Jakub Dawidek else { 12534cf67afeSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) 12544cf67afeSPawel Jakub Dawidek G_RAID3_LOGREQ(1, pbp, "Verification error."); 12552d1661a5SPawel Jakub Dawidek else 12562d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 12574cf67afeSPawel Jakub Dawidek } 1258dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_MASK; 12592d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 12602d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 1261290c6161SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 12622d1661a5SPawel Jakub Dawidek } 12632d1661a5SPawel Jakub Dawidek 12642d1661a5SPawel Jakub Dawidek static void 12652d1661a5SPawel Jakub Dawidek g_raid3_done(struct bio *bp) 12662d1661a5SPawel Jakub Dawidek { 12672d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12682d1661a5SPawel Jakub Dawidek 12692d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 12702d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_REGULAR; 12712d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Regular request done (error=%d).", bp->bio_error); 12722d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 12732d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 12748de58113SAlexander Motin mtx_unlock(&sc->sc_queue_mtx); 12752d1661a5SPawel Jakub Dawidek wakeup(sc); 12762d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 12772d1661a5SPawel Jakub Dawidek } 12782d1661a5SPawel Jakub Dawidek 12792d1661a5SPawel Jakub Dawidek static void 12802d1661a5SPawel Jakub Dawidek g_raid3_regular_request(struct bio *cbp) 12812d1661a5SPawel Jakub Dawidek { 12822d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12832d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 12842d1661a5SPawel Jakub Dawidek struct bio *pbp; 12852d1661a5SPawel Jakub Dawidek 12862d1661a5SPawel Jakub Dawidek g_topology_assert_not(); 12872d1661a5SPawel Jakub Dawidek 12882d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 12892d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 12900962f942SPawel Jakub Dawidek cbp->bio_from->index--; 12910962f942SPawel Jakub Dawidek if (cbp->bio_cmd == BIO_WRITE) 12920962f942SPawel Jakub Dawidek sc->sc_writes--; 12932d1661a5SPawel Jakub Dawidek disk = cbp->bio_from->private; 12942d1661a5SPawel Jakub Dawidek if (disk == NULL) { 12952d1661a5SPawel Jakub Dawidek g_topology_lock(); 12962d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cbp->bio_from); 12972d1661a5SPawel Jakub Dawidek g_topology_unlock(); 12982d1661a5SPawel Jakub Dawidek } 12992d1661a5SPawel Jakub Dawidek 13002d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Request finished."); 13012d1661a5SPawel Jakub Dawidek pbp->bio_inbed++; 13022d1661a5SPawel Jakub Dawidek KASSERT(pbp->bio_inbed <= pbp->bio_children, 13032d1661a5SPawel Jakub Dawidek ("bio_inbed (%u) is bigger than bio_children (%u).", pbp->bio_inbed, 13042d1661a5SPawel Jakub Dawidek pbp->bio_children)); 13052d1661a5SPawel Jakub Dawidek if (pbp->bio_inbed != pbp->bio_children) 13062d1661a5SPawel Jakub Dawidek return; 13072d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 13082d1661a5SPawel Jakub Dawidek case BIO_READ: 13092d1661a5SPawel Jakub Dawidek g_raid3_gather(pbp); 13102d1661a5SPawel Jakub Dawidek break; 13112d1661a5SPawel Jakub Dawidek case BIO_WRITE: 13122d1661a5SPawel Jakub Dawidek case BIO_DELETE: 13132d1661a5SPawel Jakub Dawidek { 13142d1661a5SPawel Jakub Dawidek int error = 0; 13152d1661a5SPawel Jakub Dawidek 13162d1661a5SPawel Jakub Dawidek pbp->bio_completed = pbp->bio_length; 13172d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) { 13183aae74ecSPawel Jakub Dawidek if (cbp->bio_error == 0) { 13193aae74ecSPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13203aae74ecSPawel Jakub Dawidek continue; 13212d1661a5SPawel Jakub Dawidek } 13223aae74ecSPawel Jakub Dawidek 13232d1661a5SPawel Jakub Dawidek if (error == 0) 13242d1661a5SPawel Jakub Dawidek error = cbp->bio_error; 13252d1661a5SPawel Jakub Dawidek else if (pbp->bio_error == 0) { 13262d1661a5SPawel Jakub Dawidek /* 13272d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 13282d1661a5SPawel Jakub Dawidek */ 13292d1661a5SPawel Jakub Dawidek pbp->bio_error = error; 13302d1661a5SPawel Jakub Dawidek } 13313aae74ecSPawel Jakub Dawidek 13323aae74ecSPawel Jakub Dawidek disk = cbp->bio_caller2; 13333aae74ecSPawel Jakub Dawidek if (disk == NULL) { 13343aae74ecSPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13353aae74ecSPawel Jakub Dawidek continue; 13363aae74ecSPawel Jakub Dawidek } 13373aae74ecSPawel Jakub Dawidek 13383aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 13393aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 13403aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, 13413aae74ecSPawel Jakub Dawidek "Request failed (error=%d).", 13423aae74ecSPawel Jakub Dawidek cbp->bio_error); 13433aae74ecSPawel Jakub Dawidek } else { 13443aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(1, cbp, 13453aae74ecSPawel Jakub Dawidek "Request failed (error=%d).", 13463aae74ecSPawel Jakub Dawidek cbp->bio_error); 13473aae74ecSPawel Jakub Dawidek } 13483aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 13493aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 13503aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 13513aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 13523aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 13533aae74ecSPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 13542d1661a5SPawel Jakub Dawidek } 13552d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13562d1661a5SPawel Jakub Dawidek } 13572d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 13582d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 13592d1661a5SPawel Jakub Dawidek else 13602d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 13612d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_DEGRADED; 13622d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_NOPARITY; 13633650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_inflight, pbp); 13643650be51SPawel Jakub Dawidek /* Release delayed sync requests if possible. */ 13653650be51SPawel Jakub Dawidek g_raid3_sync_release(sc); 13662d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 13672d1661a5SPawel Jakub Dawidek break; 13682d1661a5SPawel Jakub Dawidek } 13692d1661a5SPawel Jakub Dawidek } 13702d1661a5SPawel Jakub Dawidek } 13712d1661a5SPawel Jakub Dawidek 13722d1661a5SPawel Jakub Dawidek static void 13732d1661a5SPawel Jakub Dawidek g_raid3_sync_done(struct bio *bp) 13742d1661a5SPawel Jakub Dawidek { 13752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 13762d1661a5SPawel Jakub Dawidek 13772d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request delivered."); 13782d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 13792d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_SYNC; 13802d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 13812d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 13828de58113SAlexander Motin mtx_unlock(&sc->sc_queue_mtx); 13832d1661a5SPawel Jakub Dawidek wakeup(sc); 13842d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 13852d1661a5SPawel Jakub Dawidek } 13862d1661a5SPawel Jakub Dawidek 13872d1661a5SPawel Jakub Dawidek static void 138842461fbaSPawel Jakub Dawidek g_raid3_flush(struct g_raid3_softc *sc, struct bio *bp) 138942461fbaSPawel Jakub Dawidek { 139042461fbaSPawel Jakub Dawidek struct bio_queue_head queue; 139142461fbaSPawel Jakub Dawidek struct g_raid3_disk *disk; 139242461fbaSPawel Jakub Dawidek struct g_consumer *cp; 139342461fbaSPawel Jakub Dawidek struct bio *cbp; 139442461fbaSPawel Jakub Dawidek u_int i; 139542461fbaSPawel Jakub Dawidek 139642461fbaSPawel Jakub Dawidek bioq_init(&queue); 139742461fbaSPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 139842461fbaSPawel Jakub Dawidek disk = &sc->sc_disks[i]; 139942461fbaSPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 140042461fbaSPawel Jakub Dawidek continue; 140142461fbaSPawel Jakub Dawidek cbp = g_clone_bio(bp); 140242461fbaSPawel Jakub Dawidek if (cbp == NULL) { 140342461fbaSPawel Jakub Dawidek for (cbp = bioq_first(&queue); cbp != NULL; 140442461fbaSPawel Jakub Dawidek cbp = bioq_first(&queue)) { 140542461fbaSPawel Jakub Dawidek bioq_remove(&queue, cbp); 140642461fbaSPawel Jakub Dawidek g_destroy_bio(cbp); 140742461fbaSPawel Jakub Dawidek } 140842461fbaSPawel Jakub Dawidek if (bp->bio_error == 0) 140942461fbaSPawel Jakub Dawidek bp->bio_error = ENOMEM; 141042461fbaSPawel Jakub Dawidek g_io_deliver(bp, bp->bio_error); 141142461fbaSPawel Jakub Dawidek return; 141242461fbaSPawel Jakub Dawidek } 141342461fbaSPawel Jakub Dawidek bioq_insert_tail(&queue, cbp); 141442461fbaSPawel Jakub Dawidek cbp->bio_done = g_std_done; 141542461fbaSPawel Jakub Dawidek cbp->bio_caller1 = disk; 141642461fbaSPawel Jakub Dawidek cbp->bio_to = disk->d_consumer->provider; 141742461fbaSPawel Jakub Dawidek } 141842461fbaSPawel Jakub Dawidek for (cbp = bioq_first(&queue); cbp != NULL; cbp = bioq_first(&queue)) { 141942461fbaSPawel Jakub Dawidek bioq_remove(&queue, cbp); 142042461fbaSPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 142142461fbaSPawel Jakub Dawidek disk = cbp->bio_caller1; 142242461fbaSPawel Jakub Dawidek cbp->bio_caller1 = NULL; 142342461fbaSPawel Jakub Dawidek cp = disk->d_consumer; 142442461fbaSPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 142542461fbaSPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 142642461fbaSPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 142742461fbaSPawel Jakub Dawidek g_io_request(cbp, disk->d_consumer); 142842461fbaSPawel Jakub Dawidek } 142942461fbaSPawel Jakub Dawidek } 143042461fbaSPawel Jakub Dawidek 143142461fbaSPawel Jakub Dawidek static void 14322d1661a5SPawel Jakub Dawidek g_raid3_start(struct bio *bp) 14332d1661a5SPawel Jakub Dawidek { 14342d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 14352d1661a5SPawel Jakub Dawidek 14362d1661a5SPawel Jakub Dawidek sc = bp->bio_to->geom->softc; 14372d1661a5SPawel Jakub Dawidek /* 14382d1661a5SPawel Jakub Dawidek * If sc == NULL or there are no valid disks, provider's error 14392d1661a5SPawel Jakub Dawidek * should be set and g_raid3_start() should not be called at all. 14402d1661a5SPawel Jakub Dawidek */ 14412d1661a5SPawel Jakub Dawidek KASSERT(sc != NULL && (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 14422d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE), 14432d1661a5SPawel Jakub Dawidek ("Provider's error should be set (error=%d)(device=%s).", 14442d1661a5SPawel Jakub Dawidek bp->bio_to->error, bp->bio_to->name)); 14452d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Request received."); 14462d1661a5SPawel Jakub Dawidek 14472d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 14482d1661a5SPawel Jakub Dawidek case BIO_READ: 14492d1661a5SPawel Jakub Dawidek case BIO_WRITE: 14502d1661a5SPawel Jakub Dawidek case BIO_DELETE: 14512d1661a5SPawel Jakub Dawidek break; 145242461fbaSPawel Jakub Dawidek case BIO_FLUSH: 145342461fbaSPawel Jakub Dawidek g_raid3_flush(sc, bp); 145442461fbaSPawel Jakub Dawidek return; 14552d1661a5SPawel Jakub Dawidek case BIO_GETATTR: 14562d1661a5SPawel Jakub Dawidek default: 14572d1661a5SPawel Jakub Dawidek g_io_deliver(bp, EOPNOTSUPP); 14582d1661a5SPawel Jakub Dawidek return; 14592d1661a5SPawel Jakub Dawidek } 14602d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 14612d1661a5SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_queue, bp); 14628de58113SAlexander Motin mtx_unlock(&sc->sc_queue_mtx); 14632d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 14642d1661a5SPawel Jakub Dawidek wakeup(sc); 14652d1661a5SPawel Jakub Dawidek } 14662d1661a5SPawel Jakub Dawidek 14672d1661a5SPawel Jakub Dawidek /* 14683650be51SPawel Jakub Dawidek * Return TRUE if the given request is colliding with a in-progress 14693650be51SPawel Jakub Dawidek * synchronization request. 14702d1661a5SPawel Jakub Dawidek */ 14713650be51SPawel Jakub Dawidek static int 14723650be51SPawel Jakub Dawidek g_raid3_sync_collision(struct g_raid3_softc *sc, struct bio *bp) 14732d1661a5SPawel Jakub Dawidek { 14742d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 14753650be51SPawel Jakub Dawidek struct bio *sbp; 14763650be51SPawel Jakub Dawidek off_t rstart, rend, sstart, send; 14773650be51SPawel Jakub Dawidek int i; 14783650be51SPawel Jakub Dawidek 14793650be51SPawel Jakub Dawidek disk = sc->sc_syncdisk; 14803650be51SPawel Jakub Dawidek if (disk == NULL) 14813650be51SPawel Jakub Dawidek return (0); 14823650be51SPawel Jakub Dawidek rstart = bp->bio_offset; 14833650be51SPawel Jakub Dawidek rend = bp->bio_offset + bp->bio_length; 14843650be51SPawel Jakub Dawidek for (i = 0; i < g_raid3_syncreqs; i++) { 14853650be51SPawel Jakub Dawidek sbp = disk->d_sync.ds_bios[i]; 14863650be51SPawel Jakub Dawidek if (sbp == NULL) 14873650be51SPawel Jakub Dawidek continue; 14883650be51SPawel Jakub Dawidek sstart = sbp->bio_offset; 14893650be51SPawel Jakub Dawidek send = sbp->bio_length; 14903650be51SPawel Jakub Dawidek if (sbp->bio_cmd == BIO_WRITE) { 14913650be51SPawel Jakub Dawidek sstart *= sc->sc_ndisks - 1; 14923650be51SPawel Jakub Dawidek send *= sc->sc_ndisks - 1; 14933650be51SPawel Jakub Dawidek } 14943650be51SPawel Jakub Dawidek send += sstart; 14953650be51SPawel Jakub Dawidek if (rend > sstart && rstart < send) 14963650be51SPawel Jakub Dawidek return (1); 14973650be51SPawel Jakub Dawidek } 14983650be51SPawel Jakub Dawidek return (0); 14993650be51SPawel Jakub Dawidek } 15003650be51SPawel Jakub Dawidek 15013650be51SPawel Jakub Dawidek /* 15023650be51SPawel Jakub Dawidek * Return TRUE if the given sync request is colliding with a in-progress regular 15033650be51SPawel Jakub Dawidek * request. 15043650be51SPawel Jakub Dawidek */ 15053650be51SPawel Jakub Dawidek static int 15063650be51SPawel Jakub Dawidek g_raid3_regular_collision(struct g_raid3_softc *sc, struct bio *sbp) 15073650be51SPawel Jakub Dawidek { 15083650be51SPawel Jakub Dawidek off_t rstart, rend, sstart, send; 15092d1661a5SPawel Jakub Dawidek struct bio *bp; 15102d1661a5SPawel Jakub Dawidek 15113650be51SPawel Jakub Dawidek if (sc->sc_syncdisk == NULL) 15123650be51SPawel Jakub Dawidek return (0); 15133650be51SPawel Jakub Dawidek sstart = sbp->bio_offset; 15143650be51SPawel Jakub Dawidek send = sstart + sbp->bio_length; 15153650be51SPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_inflight.queue, bio_queue) { 15163650be51SPawel Jakub Dawidek rstart = bp->bio_offset; 15173650be51SPawel Jakub Dawidek rend = bp->bio_offset + bp->bio_length; 15183650be51SPawel Jakub Dawidek if (rend > sstart && rstart < send) 15193650be51SPawel Jakub Dawidek return (1); 15202d1661a5SPawel Jakub Dawidek } 15213650be51SPawel Jakub Dawidek return (0); 15222d1661a5SPawel Jakub Dawidek } 15232d1661a5SPawel Jakub Dawidek 15243650be51SPawel Jakub Dawidek /* 15253650be51SPawel Jakub Dawidek * Puts request onto delayed queue. 15263650be51SPawel Jakub Dawidek */ 15273650be51SPawel Jakub Dawidek static void 15283650be51SPawel Jakub Dawidek g_raid3_regular_delay(struct g_raid3_softc *sc, struct bio *bp) 15293650be51SPawel Jakub Dawidek { 15303650be51SPawel Jakub Dawidek 15313650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Delaying request."); 15323650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_regular_delayed, bp); 15333650be51SPawel Jakub Dawidek } 15343650be51SPawel Jakub Dawidek 15353650be51SPawel Jakub Dawidek /* 15363650be51SPawel Jakub Dawidek * Puts synchronization request onto delayed queue. 15373650be51SPawel Jakub Dawidek */ 15383650be51SPawel Jakub Dawidek static void 15393650be51SPawel Jakub Dawidek g_raid3_sync_delay(struct g_raid3_softc *sc, struct bio *bp) 15403650be51SPawel Jakub Dawidek { 15413650be51SPawel Jakub Dawidek 15423650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Delaying synchronization request."); 15433650be51SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_sync_delayed, bp); 15443650be51SPawel Jakub Dawidek } 15453650be51SPawel Jakub Dawidek 15463650be51SPawel Jakub Dawidek /* 15473650be51SPawel Jakub Dawidek * Releases delayed regular requests which don't collide anymore with sync 15483650be51SPawel Jakub Dawidek * requests. 15493650be51SPawel Jakub Dawidek */ 15503650be51SPawel Jakub Dawidek static void 15513650be51SPawel Jakub Dawidek g_raid3_regular_release(struct g_raid3_softc *sc) 15523650be51SPawel Jakub Dawidek { 15533650be51SPawel Jakub Dawidek struct bio *bp, *bp2; 15543650be51SPawel Jakub Dawidek 15553650be51SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(bp, &sc->sc_regular_delayed.queue, bio_queue, bp2) { 15563650be51SPawel Jakub Dawidek if (g_raid3_sync_collision(sc, bp)) 15573650be51SPawel Jakub Dawidek continue; 15583650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_regular_delayed, bp); 15593650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Releasing delayed request (%p).", bp); 15603650be51SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 15613650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 15623650be51SPawel Jakub Dawidek #if 0 15633650be51SPawel Jakub Dawidek /* 15643650be51SPawel Jakub Dawidek * wakeup() is not needed, because this function is called from 15653650be51SPawel Jakub Dawidek * the worker thread. 15663650be51SPawel Jakub Dawidek */ 15673650be51SPawel Jakub Dawidek wakeup(&sc->sc_queue); 15683650be51SPawel Jakub Dawidek #endif 15693650be51SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 15703650be51SPawel Jakub Dawidek } 15713650be51SPawel Jakub Dawidek } 15723650be51SPawel Jakub Dawidek 15733650be51SPawel Jakub Dawidek /* 15743650be51SPawel Jakub Dawidek * Releases delayed sync requests which don't collide anymore with regular 15753650be51SPawel Jakub Dawidek * requests. 15763650be51SPawel Jakub Dawidek */ 15773650be51SPawel Jakub Dawidek static void 15783650be51SPawel Jakub Dawidek g_raid3_sync_release(struct g_raid3_softc *sc) 15793650be51SPawel Jakub Dawidek { 15803650be51SPawel Jakub Dawidek struct bio *bp, *bp2; 15813650be51SPawel Jakub Dawidek 15823650be51SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(bp, &sc->sc_sync_delayed.queue, bio_queue, bp2) { 15833650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 15843650be51SPawel Jakub Dawidek continue; 15853650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_sync_delayed, bp); 15863650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, 15873650be51SPawel Jakub Dawidek "Releasing delayed synchronization request."); 15883650be51SPawel Jakub Dawidek g_io_request(bp, bp->bio_from); 15893650be51SPawel Jakub Dawidek } 15903650be51SPawel Jakub Dawidek } 15913650be51SPawel Jakub Dawidek 15923650be51SPawel Jakub Dawidek /* 15933650be51SPawel Jakub Dawidek * Handle synchronization requests. 15943650be51SPawel Jakub Dawidek * Every synchronization request is two-steps process: first, READ request is 15953650be51SPawel Jakub Dawidek * send to active provider and then WRITE request (with read data) to the provider 15963650be51SPawel Jakub Dawidek * beeing synchronized. When WRITE is finished, new synchronization request is 15973650be51SPawel Jakub Dawidek * send. 15983650be51SPawel Jakub Dawidek */ 15992d1661a5SPawel Jakub Dawidek static void 16002d1661a5SPawel Jakub Dawidek g_raid3_sync_request(struct bio *bp) 16012d1661a5SPawel Jakub Dawidek { 16022d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 16032d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 16042d1661a5SPawel Jakub Dawidek 160579e61493SPawel Jakub Dawidek bp->bio_from->index--; 16062d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 16072d1661a5SPawel Jakub Dawidek disk = bp->bio_from->private; 16082d1661a5SPawel Jakub Dawidek if (disk == NULL) { 16093650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); /* Avoid recursion on sc_lock. */ 16102d1661a5SPawel Jakub Dawidek g_topology_lock(); 16112d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, bp->bio_from); 16122d1661a5SPawel Jakub Dawidek g_topology_unlock(); 16133650be51SPawel Jakub Dawidek free(bp->bio_data, M_RAID3); 16142d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 16153650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 16162d1661a5SPawel Jakub Dawidek return; 16172d1661a5SPawel Jakub Dawidek } 16182d1661a5SPawel Jakub Dawidek 16192d1661a5SPawel Jakub Dawidek /* 16202d1661a5SPawel Jakub Dawidek * Synchronization request. 16212d1661a5SPawel Jakub Dawidek */ 16222d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 16232d1661a5SPawel Jakub Dawidek case BIO_READ: 16242d1661a5SPawel Jakub Dawidek { 16252d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 16262d1661a5SPawel Jakub Dawidek u_char *dst, *src; 16272d1661a5SPawel Jakub Dawidek off_t left; 16282d1661a5SPawel Jakub Dawidek u_int atom; 16292d1661a5SPawel Jakub Dawidek 16302d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 16312d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 16322d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 16332d1661a5SPawel Jakub Dawidek bp->bio_error); 16342d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 16352d1661a5SPawel Jakub Dawidek return; 16362d1661a5SPawel Jakub Dawidek } 16372d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 16382d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 16392d1661a5SPawel Jakub Dawidek dst = src = bp->bio_data; 16402d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) { 16412d1661a5SPawel Jakub Dawidek u_int n; 16422d1661a5SPawel Jakub Dawidek 16432d1661a5SPawel Jakub Dawidek /* Parity component. */ 16442d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 16452d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 16462d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 16472d1661a5SPawel Jakub Dawidek src += atom; 16482d1661a5SPawel Jakub Dawidek for (n = 1; n < sc->sc_ndisks - 1; n++) { 164906b215fdSAlexander Motin g_raid3_xor(src, dst, atom); 16502d1661a5SPawel Jakub Dawidek src += atom; 16512d1661a5SPawel Jakub Dawidek } 16522d1661a5SPawel Jakub Dawidek dst += atom; 16532d1661a5SPawel Jakub Dawidek } 16542d1661a5SPawel Jakub Dawidek } else { 16552d1661a5SPawel Jakub Dawidek /* Regular component. */ 16562d1661a5SPawel Jakub Dawidek src += atom * disk->d_no; 16572d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 16582d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 16592d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 16602d1661a5SPawel Jakub Dawidek src += sc->sc_sectorsize; 16612d1661a5SPawel Jakub Dawidek dst += atom; 16622d1661a5SPawel Jakub Dawidek } 16632d1661a5SPawel Jakub Dawidek } 16643650be51SPawel Jakub Dawidek bp->bio_driver1 = bp->bio_driver2 = NULL; 16653650be51SPawel Jakub Dawidek bp->bio_pflags = 0; 16662d1661a5SPawel Jakub Dawidek bp->bio_offset /= sc->sc_ndisks - 1; 16672d1661a5SPawel Jakub Dawidek bp->bio_length /= sc->sc_ndisks - 1; 16682d1661a5SPawel Jakub Dawidek bp->bio_cmd = BIO_WRITE; 16692d1661a5SPawel Jakub Dawidek bp->bio_cflags = 0; 16702d1661a5SPawel Jakub Dawidek bp->bio_children = bp->bio_inbed = 0; 16712d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 16723650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 16732d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 16742d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 167579e61493SPawel Jakub Dawidek cp->index++; 16762d1661a5SPawel Jakub Dawidek g_io_request(bp, cp); 16772d1661a5SPawel Jakub Dawidek return; 16782d1661a5SPawel Jakub Dawidek } 16792d1661a5SPawel Jakub Dawidek case BIO_WRITE: 1680d2fb9c62SPawel Jakub Dawidek { 1681d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 16823650be51SPawel Jakub Dawidek off_t boffset, moffset; 16833650be51SPawel Jakub Dawidek void *data; 16843650be51SPawel Jakub Dawidek int i; 1685d2fb9c62SPawel Jakub Dawidek 16862d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 16872d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 16882d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 16892d1661a5SPawel Jakub Dawidek bp->bio_error); 16902d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 1691ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 16922d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 16932d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 16942d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 16952d1661a5SPawel Jakub Dawidek return; 16962d1661a5SPawel Jakub Dawidek } 16972d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 1698d2fb9c62SPawel Jakub Dawidek sync = &disk->d_sync; 16993650be51SPawel Jakub Dawidek if (sync->ds_offset == sc->sc_mediasize / (sc->sc_ndisks - 1) || 17003650be51SPawel Jakub Dawidek sync->ds_consumer == NULL || 17013650be51SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 17023650be51SPawel Jakub Dawidek /* Don't send more synchronization requests. */ 17033650be51SPawel Jakub Dawidek sync->ds_inflight--; 17043650be51SPawel Jakub Dawidek if (sync->ds_bios != NULL) { 1705ef25813dSRuslan Ermilov i = (int)(uintptr_t)bp->bio_caller1; 17063650be51SPawel Jakub Dawidek sync->ds_bios[i] = NULL; 17073650be51SPawel Jakub Dawidek } 17083650be51SPawel Jakub Dawidek free(bp->bio_data, M_RAID3); 17092d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 17103650be51SPawel Jakub Dawidek if (sync->ds_inflight > 0) 1711d2fb9c62SPawel Jakub Dawidek return; 17123650be51SPawel Jakub Dawidek if (sync->ds_consumer == NULL || 17133650be51SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 17143650be51SPawel Jakub Dawidek return; 17153650be51SPawel Jakub Dawidek } 17162d1661a5SPawel Jakub Dawidek /* 17172d1661a5SPawel Jakub Dawidek * Disk up-to-date, activate it. 17182d1661a5SPawel Jakub Dawidek */ 17192d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_ACTIVE, 17202d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 17212d1661a5SPawel Jakub Dawidek return; 17223650be51SPawel Jakub Dawidek } 17233650be51SPawel Jakub Dawidek 17243650be51SPawel Jakub Dawidek /* Send next synchronization request. */ 17253650be51SPawel Jakub Dawidek data = bp->bio_data; 17263650be51SPawel Jakub Dawidek bzero(bp, sizeof(*bp)); 17273650be51SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 17283650be51SPawel Jakub Dawidek bp->bio_offset = sync->ds_offset * (sc->sc_ndisks - 1); 17293650be51SPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 17303650be51SPawel Jakub Dawidek sync->ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 17313650be51SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 17323650be51SPawel Jakub Dawidek bp->bio_data = data; 17333650be51SPawel Jakub Dawidek bp->bio_from = sync->ds_consumer; 17343650be51SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 17353650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 17363650be51SPawel Jakub Dawidek sync->ds_consumer->index++; 17372d1661a5SPawel Jakub Dawidek /* 17383650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a regular request. 17392d1661a5SPawel Jakub Dawidek */ 17403650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 17413650be51SPawel Jakub Dawidek g_raid3_sync_delay(sc, bp); 17423650be51SPawel Jakub Dawidek else 17433650be51SPawel Jakub Dawidek g_io_request(bp, sync->ds_consumer); 17443650be51SPawel Jakub Dawidek 17453650be51SPawel Jakub Dawidek /* Release delayed requests if possible. */ 17463650be51SPawel Jakub Dawidek g_raid3_regular_release(sc); 17473650be51SPawel Jakub Dawidek 17483650be51SPawel Jakub Dawidek /* Find the smallest offset. */ 17493650be51SPawel Jakub Dawidek moffset = sc->sc_mediasize; 17503650be51SPawel Jakub Dawidek for (i = 0; i < g_raid3_syncreqs; i++) { 17513650be51SPawel Jakub Dawidek bp = sync->ds_bios[i]; 17523650be51SPawel Jakub Dawidek boffset = bp->bio_offset; 17533650be51SPawel Jakub Dawidek if (bp->bio_cmd == BIO_WRITE) 17543650be51SPawel Jakub Dawidek boffset *= sc->sc_ndisks - 1; 17553650be51SPawel Jakub Dawidek if (boffset < moffset) 17563650be51SPawel Jakub Dawidek moffset = boffset; 17573650be51SPawel Jakub Dawidek } 17583650be51SPawel Jakub Dawidek if (sync->ds_offset_done + (MAXPHYS * 100) < moffset) { 17593650be51SPawel Jakub Dawidek /* Update offset_done on every 100 blocks. */ 17603650be51SPawel Jakub Dawidek sync->ds_offset_done = moffset; 17612d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 17622d1661a5SPawel Jakub Dawidek } 17632d1661a5SPawel Jakub Dawidek return; 1764d2fb9c62SPawel Jakub Dawidek } 17652d1661a5SPawel Jakub Dawidek default: 17662d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Invalid command here: %u (device=%s)", 17672d1661a5SPawel Jakub Dawidek bp->bio_cmd, sc->sc_name)); 17682d1661a5SPawel Jakub Dawidek break; 17692d1661a5SPawel Jakub Dawidek } 17702d1661a5SPawel Jakub Dawidek } 17712d1661a5SPawel Jakub Dawidek 17722d1661a5SPawel Jakub Dawidek static int 17732d1661a5SPawel Jakub Dawidek g_raid3_register_request(struct bio *pbp) 17742d1661a5SPawel Jakub Dawidek { 17752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 17762d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 17772d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 1778ee40c7aaSPawel Jakub Dawidek struct bio *cbp, *tmpbp; 17792d1661a5SPawel Jakub Dawidek off_t offset, length; 1780fa6a7837SDavid E. O'Brien u_int n, ndisks; 1781dba915cfSPawel Jakub Dawidek int round_robin, verify; 17822d1661a5SPawel Jakub Dawidek 1783fa6a7837SDavid E. O'Brien ndisks = 0; 17842d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 17852d1661a5SPawel Jakub Dawidek if ((pbp->bio_cflags & G_RAID3_BIO_CFLAG_REGSYNC) != 0 && 17862d1661a5SPawel Jakub Dawidek sc->sc_syncdisk == NULL) { 17872d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, EIO); 17882d1661a5SPawel Jakub Dawidek return (0); 17892d1661a5SPawel Jakub Dawidek } 17902d1661a5SPawel Jakub Dawidek g_raid3_init_bio(pbp); 17912d1661a5SPawel Jakub Dawidek length = pbp->bio_length / (sc->sc_ndisks - 1); 17922d1661a5SPawel Jakub Dawidek offset = pbp->bio_offset / (sc->sc_ndisks - 1); 1793dba915cfSPawel Jakub Dawidek round_robin = verify = 0; 17942d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 17952d1661a5SPawel Jakub Dawidek case BIO_READ: 1796dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 1797dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1798dba915cfSPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_VERIFY; 1799dba915cfSPawel Jakub Dawidek verify = 1; 1800dba915cfSPawel Jakub Dawidek ndisks = sc->sc_ndisks; 1801dba915cfSPawel Jakub Dawidek } else { 1802dba915cfSPawel Jakub Dawidek verify = 0; 18032d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks - 1; 1804dba915cfSPawel Jakub Dawidek } 1805dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0 && 1806dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1807dba915cfSPawel Jakub Dawidek round_robin = 1; 1808dba915cfSPawel Jakub Dawidek } else { 1809dba915cfSPawel Jakub Dawidek round_robin = 0; 1810dba915cfSPawel Jakub Dawidek } 1811dba915cfSPawel Jakub Dawidek KASSERT(!round_robin || !verify, 1812dba915cfSPawel Jakub Dawidek ("ROUND-ROBIN and VERIFY are mutually exclusive.")); 1813f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = &sc->sc_disks[sc->sc_ndisks - 1]; 18142d1661a5SPawel Jakub Dawidek break; 18152d1661a5SPawel Jakub Dawidek case BIO_WRITE: 18162d1661a5SPawel Jakub Dawidek case BIO_DELETE: 18173650be51SPawel Jakub Dawidek /* 18183650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a synchronization 18193650be51SPawel Jakub Dawidek * request. 18203650be51SPawel Jakub Dawidek */ 18213650be51SPawel Jakub Dawidek if (g_raid3_sync_collision(sc, pbp)) { 18223650be51SPawel Jakub Dawidek g_raid3_regular_delay(sc, pbp); 18233650be51SPawel Jakub Dawidek return (0); 18243650be51SPawel Jakub Dawidek } 1825d2fb9c62SPawel Jakub Dawidek 18264d006a98SPawel Jakub Dawidek if (sc->sc_idle) 18274d006a98SPawel Jakub Dawidek g_raid3_unidle(sc); 18280962f942SPawel Jakub Dawidek else 182901f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 18304d006a98SPawel Jakub Dawidek 18312d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks; 18322d1661a5SPawel Jakub Dawidek break; 18332d1661a5SPawel Jakub Dawidek } 18342d1661a5SPawel Jakub Dawidek for (n = 0; n < ndisks; n++) { 18352d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 18362d1661a5SPawel Jakub Dawidek cbp = g_raid3_clone_bio(sc, pbp); 18372d1661a5SPawel Jakub Dawidek if (cbp == NULL) { 18382d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 18392d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 1840a65a0da2SPawel Jakub Dawidek /* 1841a65a0da2SPawel Jakub Dawidek * To prevent deadlock, we must run back up 1842a65a0da2SPawel Jakub Dawidek * with the ENOMEM for failed requests of any 1843a65a0da2SPawel Jakub Dawidek * of our consumers. Our own sync requests 1844a65a0da2SPawel Jakub Dawidek * can stick around, as they are finite. 1845a65a0da2SPawel Jakub Dawidek */ 1846a65a0da2SPawel Jakub Dawidek if ((pbp->bio_cflags & 1847a65a0da2SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_REGULAR) != 0) { 1848a65a0da2SPawel Jakub Dawidek g_io_deliver(pbp, ENOMEM); 1849a65a0da2SPawel Jakub Dawidek return (0); 1850a65a0da2SPawel Jakub Dawidek } 18512d1661a5SPawel Jakub Dawidek return (ENOMEM); 18522d1661a5SPawel Jakub Dawidek } 18532d1661a5SPawel Jakub Dawidek cbp->bio_offset = offset; 18542d1661a5SPawel Jakub Dawidek cbp->bio_length = length; 18552d1661a5SPawel Jakub Dawidek cbp->bio_done = g_raid3_done; 18562d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 18572d1661a5SPawel Jakub Dawidek case BIO_READ: 18582d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 18592d1661a5SPawel Jakub Dawidek /* 18602d1661a5SPawel Jakub Dawidek * Replace invalid component with the parity 18612d1661a5SPawel Jakub Dawidek * component. 18622d1661a5SPawel Jakub Dawidek */ 18632d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 18642d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 18652d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 1866f5a2f7feSPawel Jakub Dawidek } else if (round_robin && 1867f5a2f7feSPawel Jakub Dawidek disk->d_no == sc->sc_round_robin) { 1868f5a2f7feSPawel Jakub Dawidek /* 1869f5a2f7feSPawel Jakub Dawidek * In round-robin mode skip one data component 1870f5a2f7feSPawel Jakub Dawidek * and use parity component when reading. 1871f5a2f7feSPawel Jakub Dawidek */ 1872f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = disk; 1873f5a2f7feSPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 1874f5a2f7feSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1875f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin++; 1876f5a2f7feSPawel Jakub Dawidek round_robin = 0; 1877dba915cfSPawel Jakub Dawidek } else if (verify && disk->d_no == sc->sc_ndisks - 1) { 1878dba915cfSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 18792d1661a5SPawel Jakub Dawidek } 18802d1661a5SPawel Jakub Dawidek break; 18812d1661a5SPawel Jakub Dawidek case BIO_WRITE: 18822d1661a5SPawel Jakub Dawidek case BIO_DELETE: 18832d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 18842d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 18852d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 18862d1661a5SPawel Jakub Dawidek /* 18872d1661a5SPawel Jakub Dawidek * Active parity component, mark it as such. 18882d1661a5SPawel Jakub Dawidek */ 18892d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 18902d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_PARITY; 18912d1661a5SPawel Jakub Dawidek } 18922d1661a5SPawel Jakub Dawidek } else { 18932d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 18942d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 18952d1661a5SPawel Jakub Dawidek /* 18962d1661a5SPawel Jakub Dawidek * Parity component is not connected, 18972d1661a5SPawel Jakub Dawidek * so destroy its request. 18982d1661a5SPawel Jakub Dawidek */ 18992d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= 19002d1661a5SPawel Jakub Dawidek G_RAID3_BIO_PFLAG_NOPARITY; 19012d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 19022d1661a5SPawel Jakub Dawidek cbp = NULL; 19032d1661a5SPawel Jakub Dawidek } else { 19042d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 19052d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_NODISK; 19062d1661a5SPawel Jakub Dawidek disk = NULL; 19072d1661a5SPawel Jakub Dawidek } 19082d1661a5SPawel Jakub Dawidek } 19092d1661a5SPawel Jakub Dawidek break; 19102d1661a5SPawel Jakub Dawidek } 19112d1661a5SPawel Jakub Dawidek if (cbp != NULL) 19122d1661a5SPawel Jakub Dawidek cbp->bio_caller2 = disk; 19132d1661a5SPawel Jakub Dawidek } 19142d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 19152d1661a5SPawel Jakub Dawidek case BIO_READ: 1916f5a2f7feSPawel Jakub Dawidek if (round_robin) { 1917f5a2f7feSPawel Jakub Dawidek /* 1918f5a2f7feSPawel Jakub Dawidek * If we are in round-robin mode and 'round_robin' is 1919f5a2f7feSPawel Jakub Dawidek * still 1, it means, that we skipped parity component 1920f5a2f7feSPawel Jakub Dawidek * for this read and must reset sc_round_robin field. 1921f5a2f7feSPawel Jakub Dawidek */ 1922f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 1923f5a2f7feSPawel Jakub Dawidek } 1924ee40c7aaSPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 19252d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 19262d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 19272d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 19282d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 19293650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 19302d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", 19312d1661a5SPawel Jakub Dawidek cp->provider->name, cp->acr, cp->acw, cp->ace)); 193279e61493SPawel Jakub Dawidek cp->index++; 19332d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 19342d1661a5SPawel Jakub Dawidek } 19352d1661a5SPawel Jakub Dawidek break; 19362d1661a5SPawel Jakub Dawidek case BIO_WRITE: 19372d1661a5SPawel Jakub Dawidek case BIO_DELETE: 19382d1661a5SPawel Jakub Dawidek /* 19393650be51SPawel Jakub Dawidek * Put request onto inflight queue, so we can check if new 19403650be51SPawel Jakub Dawidek * synchronization requests don't collide with it. 19413650be51SPawel Jakub Dawidek */ 19423650be51SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_inflight, pbp); 19433650be51SPawel Jakub Dawidek 19443650be51SPawel Jakub Dawidek /* 19452d1661a5SPawel Jakub Dawidek * Bump syncid on first write. 19462d1661a5SPawel Jakub Dawidek */ 1947ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) { 1948a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 1949d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(sc); 19502d1661a5SPawel Jakub Dawidek } 19512d1661a5SPawel Jakub Dawidek g_raid3_scatter(pbp); 19522d1661a5SPawel Jakub Dawidek break; 19532d1661a5SPawel Jakub Dawidek } 19542d1661a5SPawel Jakub Dawidek return (0); 19552d1661a5SPawel Jakub Dawidek } 19562d1661a5SPawel Jakub Dawidek 19572d1661a5SPawel Jakub Dawidek static int 19582d1661a5SPawel Jakub Dawidek g_raid3_can_destroy(struct g_raid3_softc *sc) 19592d1661a5SPawel Jakub Dawidek { 19602d1661a5SPawel Jakub Dawidek struct g_geom *gp; 19612d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 19622d1661a5SPawel Jakub Dawidek 19632d1661a5SPawel Jakub Dawidek g_topology_assert(); 19642d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 196518486a5eSPawel Jakub Dawidek if (gp->softc == NULL) 196618486a5eSPawel Jakub Dawidek return (1); 19672d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 19682d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 19692d1661a5SPawel Jakub Dawidek return (0); 19702d1661a5SPawel Jakub Dawidek } 19712d1661a5SPawel Jakub Dawidek gp = sc->sc_sync.ds_geom; 19722d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 19732d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 19742d1661a5SPawel Jakub Dawidek return (0); 19752d1661a5SPawel Jakub Dawidek } 19762d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "No I/O requests for %s, it can be destroyed.", 19772d1661a5SPawel Jakub Dawidek sc->sc_name); 19782d1661a5SPawel Jakub Dawidek return (1); 19792d1661a5SPawel Jakub Dawidek } 19802d1661a5SPawel Jakub Dawidek 19812d1661a5SPawel Jakub Dawidek static int 19822d1661a5SPawel Jakub Dawidek g_raid3_try_destroy(struct g_raid3_softc *sc) 19832d1661a5SPawel Jakub Dawidek { 19842d1661a5SPawel Jakub Dawidek 19853650be51SPawel Jakub Dawidek g_topology_assert_not(); 19863650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 19873650be51SPawel Jakub Dawidek 19884ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 19894ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 19904ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 19914ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 19924ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 19934ed854e8SPawel Jakub Dawidek } 19944ed854e8SPawel Jakub Dawidek 19952d1661a5SPawel Jakub Dawidek g_topology_lock(); 19962d1661a5SPawel Jakub Dawidek if (!g_raid3_can_destroy(sc)) { 19972d1661a5SPawel Jakub Dawidek g_topology_unlock(); 19982d1661a5SPawel Jakub Dawidek return (0); 19992d1661a5SPawel Jakub Dawidek } 200018486a5eSPawel Jakub Dawidek sc->sc_geom->softc = NULL; 200118486a5eSPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 2002a245a548SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_WAIT) != 0) { 20032d1661a5SPawel Jakub Dawidek g_topology_unlock(); 20042d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 20052d1661a5SPawel Jakub Dawidek &sc->sc_worker); 20063650be51SPawel Jakub Dawidek /* Unlock sc_lock here, as it can be destroyed after wakeup. */ 20073650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 20082d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_worker); 20092d1661a5SPawel Jakub Dawidek sc->sc_worker = NULL; 20102d1661a5SPawel Jakub Dawidek } else { 20112d1661a5SPawel Jakub Dawidek g_topology_unlock(); 20123650be51SPawel Jakub Dawidek g_raid3_destroy_device(sc); 20132d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 20142d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 20152d1661a5SPawel Jakub Dawidek } 20162d1661a5SPawel Jakub Dawidek return (1); 20172d1661a5SPawel Jakub Dawidek } 20182d1661a5SPawel Jakub Dawidek 20192d1661a5SPawel Jakub Dawidek /* 20202d1661a5SPawel Jakub Dawidek * Worker thread. 20212d1661a5SPawel Jakub Dawidek */ 20222d1661a5SPawel Jakub Dawidek static void 20232d1661a5SPawel Jakub Dawidek g_raid3_worker(void *arg) 20242d1661a5SPawel Jakub Dawidek { 20252d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 20262d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 20272d1661a5SPawel Jakub Dawidek struct bio *bp; 20280962f942SPawel Jakub Dawidek int timeout; 20292d1661a5SPawel Jakub Dawidek 20302d1661a5SPawel Jakub Dawidek sc = arg; 2031982d11f8SJeff Roberson thread_lock(curthread); 203263710c4dSJohn Baldwin sched_prio(curthread, PRIBIO); 2033982d11f8SJeff Roberson thread_unlock(curthread); 20342d1661a5SPawel Jakub Dawidek 20353650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 20362d1661a5SPawel Jakub Dawidek for (;;) { 20372d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: Let's see...", __func__); 20382d1661a5SPawel Jakub Dawidek /* 20392d1661a5SPawel Jakub Dawidek * First take a look at events. 20402d1661a5SPawel Jakub Dawidek * This is important to handle events before any I/O requests. 20412d1661a5SPawel Jakub Dawidek */ 20422d1661a5SPawel Jakub Dawidek ep = g_raid3_event_get(sc); 20433650be51SPawel Jakub Dawidek if (ep != NULL) { 2044d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 20452d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) { 20462d1661a5SPawel Jakub Dawidek /* Update only device status. */ 20472d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, 20482d1661a5SPawel Jakub Dawidek "Running event for device %s.", 20492d1661a5SPawel Jakub Dawidek sc->sc_name); 20502d1661a5SPawel Jakub Dawidek ep->e_error = 0; 2051d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 1); 20522d1661a5SPawel Jakub Dawidek } else { 20532d1661a5SPawel Jakub Dawidek /* Update disk status. */ 20542d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Running event for disk %s.", 20552d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(ep->e_disk)); 20562d1661a5SPawel Jakub Dawidek ep->e_error = g_raid3_update_disk(ep->e_disk, 2057d97d5ee9SPawel Jakub Dawidek ep->e_state); 20582d1661a5SPawel Jakub Dawidek if (ep->e_error == 0) 2059d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 0); 20602d1661a5SPawel Jakub Dawidek } 20612d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) { 20622d1661a5SPawel Jakub Dawidek KASSERT(ep->e_error == 0, 20632d1661a5SPawel Jakub Dawidek ("Error cannot be handled.")); 20642d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 20652d1661a5SPawel Jakub Dawidek } else { 20662d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 20672d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 20682d1661a5SPawel Jakub Dawidek ep); 20692d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 20702d1661a5SPawel Jakub Dawidek wakeup(ep); 20712d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 20722d1661a5SPawel Jakub Dawidek } 20732d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 20742d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 20753650be51SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) { 20763650be51SPawel Jakub Dawidek curthread->td_pflags &= ~TDP_GEOM; 20773650be51SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Thread exiting."); 20783745c395SJulian Elischer kproc_exit(0); 20792d1661a5SPawel Jakub Dawidek } 20803650be51SPawel Jakub Dawidek } 20812d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 1.", __func__); 20822d1661a5SPawel Jakub Dawidek continue; 20832d1661a5SPawel Jakub Dawidek } 20842d1661a5SPawel Jakub Dawidek /* 20850962f942SPawel Jakub Dawidek * Check if we can mark array as CLEAN and if we can't take 20860962f942SPawel Jakub Dawidek * how much seconds should we wait. 20870962f942SPawel Jakub Dawidek */ 20883650be51SPawel Jakub Dawidek timeout = g_raid3_idle(sc, -1); 20890962f942SPawel Jakub Dawidek /* 20902d1661a5SPawel Jakub Dawidek * Now I/O requests. 20912d1661a5SPawel Jakub Dawidek */ 20922d1661a5SPawel Jakub Dawidek /* Get first request from the queue. */ 20932d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 20942d1661a5SPawel Jakub Dawidek bp = bioq_first(&sc->sc_queue); 20952d1661a5SPawel Jakub Dawidek if (bp == NULL) { 20962d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 20972d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 20982d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 20993650be51SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) { 21003650be51SPawel Jakub Dawidek curthread->td_pflags &= ~TDP_GEOM; 2101d7fad9f6SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Thread exiting."); 21023745c395SJulian Elischer kproc_exit(0); 21033650be51SPawel Jakub Dawidek } 21042d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 21052d1661a5SPawel Jakub Dawidek } 21063650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 2107a2fe5c66SPawel Jakub Dawidek /* 2108a2fe5c66SPawel Jakub Dawidek * XXX: We can miss an event here, because an event 2109a2fe5c66SPawel Jakub Dawidek * can be added without sx-device-lock and without 2110a2fe5c66SPawel Jakub Dawidek * mtx-queue-lock. Maybe I should just stop using 2111a2fe5c66SPawel Jakub Dawidek * dedicated mutex for events synchronization and 2112a2fe5c66SPawel Jakub Dawidek * stick with the queue lock? 2113a2fe5c66SPawel Jakub Dawidek * The event will hang here until next I/O request 2114a2fe5c66SPawel Jakub Dawidek * or next event is received. 2115a2fe5c66SPawel Jakub Dawidek */ 21160962f942SPawel Jakub Dawidek MSLEEP(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, "r3:w1", 21170962f942SPawel Jakub Dawidek timeout * hz); 21183650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 21199bb09163SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 4.", __func__); 21202d1661a5SPawel Jakub Dawidek continue; 21212d1661a5SPawel Jakub Dawidek } 212284edb86dSPawel Jakub Dawidek process: 21232d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 21242d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 21252d1661a5SPawel Jakub Dawidek 21268e007c52SPawel Jakub Dawidek if (bp->bio_from->geom == sc->sc_sync.ds_geom && 21278e007c52SPawel Jakub Dawidek (bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) != 0) { 21288e007c52SPawel Jakub Dawidek g_raid3_sync_request(bp); /* READ */ 21298e007c52SPawel Jakub Dawidek } else if (bp->bio_to != sc->sc_provider) { 21303650be51SPawel Jakub Dawidek if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) != 0) 21312d1661a5SPawel Jakub Dawidek g_raid3_regular_request(bp); 21323650be51SPawel Jakub Dawidek else if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) != 0) 21338e007c52SPawel Jakub Dawidek g_raid3_sync_request(bp); /* WRITE */ 2134de6f1c7cSPawel Jakub Dawidek else { 2135de6f1c7cSPawel Jakub Dawidek KASSERT(0, 2136de6f1c7cSPawel Jakub Dawidek ("Invalid request cflags=0x%hhx to=%s.", 2137de6f1c7cSPawel Jakub Dawidek bp->bio_cflags, bp->bio_to->name)); 2138de6f1c7cSPawel Jakub Dawidek } 2139de6f1c7cSPawel Jakub Dawidek } else if (g_raid3_register_request(bp) != 0) { 21402d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 21413650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 214284edb86dSPawel Jakub Dawidek /* 214384edb86dSPawel Jakub Dawidek * We are short in memory, let see if there are finished 214484edb86dSPawel Jakub Dawidek * request we can free. 214584edb86dSPawel Jakub Dawidek */ 214684edb86dSPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 214784edb86dSPawel Jakub Dawidek if (bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) 214884edb86dSPawel Jakub Dawidek goto process; 21492d1661a5SPawel Jakub Dawidek } 215084edb86dSPawel Jakub Dawidek /* 215184edb86dSPawel Jakub Dawidek * No finished regular request, so at least keep 215284edb86dSPawel Jakub Dawidek * synchronization running. 215384edb86dSPawel Jakub Dawidek */ 215484edb86dSPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 215584edb86dSPawel Jakub Dawidek if (bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) 215684edb86dSPawel Jakub Dawidek goto process; 215784edb86dSPawel Jakub Dawidek } 215884edb86dSPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 215984edb86dSPawel Jakub Dawidek MSLEEP(&sc->sc_queue, &sc->sc_queue_mtx, PRIBIO | PDROP, 216084edb86dSPawel Jakub Dawidek "r3:lowmem", hz / 10); 216184edb86dSPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 21622d1661a5SPawel Jakub Dawidek } 2163d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 9.", __func__); 21642d1661a5SPawel Jakub Dawidek } 21652d1661a5SPawel Jakub Dawidek } 21662d1661a5SPawel Jakub Dawidek 21672d1661a5SPawel Jakub Dawidek static void 21680962f942SPawel Jakub Dawidek g_raid3_update_idle(struct g_raid3_softc *sc, struct g_raid3_disk *disk) 21692d1661a5SPawel Jakub Dawidek { 21702d1661a5SPawel Jakub Dawidek 21713650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 2172501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0) 2173501250baSPawel Jakub Dawidek return; 21740962f942SPawel Jakub Dawidek if (!sc->sc_idle && (disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) == 0) { 21752d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 21763650be51SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 21772d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 21780962f942SPawel Jakub Dawidek } else if (sc->sc_idle && 21790962f942SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) { 21802d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 21813650be51SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 21822d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 21832d1661a5SPawel Jakub Dawidek } 21842d1661a5SPawel Jakub Dawidek } 21852d1661a5SPawel Jakub Dawidek 21862d1661a5SPawel Jakub Dawidek static void 21872d1661a5SPawel Jakub Dawidek g_raid3_sync_start(struct g_raid3_softc *sc) 21882d1661a5SPawel Jakub Dawidek { 21892d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 21903650be51SPawel Jakub Dawidek struct g_consumer *cp; 21913650be51SPawel Jakub Dawidek struct bio *bp; 21922d1661a5SPawel Jakub Dawidek int error; 21932d1661a5SPawel Jakub Dawidek u_int n; 21942d1661a5SPawel Jakub Dawidek 21953650be51SPawel Jakub Dawidek g_topology_assert_not(); 21963650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 21972d1661a5SPawel Jakub Dawidek 21982d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 21992d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 22002d1661a5SPawel Jakub Dawidek sc->sc_state)); 22012d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_syncdisk == NULL, ("Syncdisk is not NULL (%s, %u).", 22022d1661a5SPawel Jakub Dawidek sc->sc_name, sc->sc_state)); 22032d1661a5SPawel Jakub Dawidek disk = NULL; 22042d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 22052d1661a5SPawel Jakub Dawidek if (sc->sc_disks[n].d_state != G_RAID3_DISK_STATE_SYNCHRONIZING) 22062d1661a5SPawel Jakub Dawidek continue; 22072d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 22082d1661a5SPawel Jakub Dawidek break; 22092d1661a5SPawel Jakub Dawidek } 22102d1661a5SPawel Jakub Dawidek if (disk == NULL) 22112d1661a5SPawel Jakub Dawidek return; 22122d1661a5SPawel Jakub Dawidek 22133650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 22143650be51SPawel Jakub Dawidek g_topology_lock(); 22153650be51SPawel Jakub Dawidek cp = g_new_consumer(sc->sc_sync.ds_geom); 22163650be51SPawel Jakub Dawidek error = g_attach(cp, sc->sc_provider); 22173650be51SPawel Jakub Dawidek KASSERT(error == 0, 22183650be51SPawel Jakub Dawidek ("Cannot attach to %s (error=%d).", sc->sc_name, error)); 22193650be51SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 22203650be51SPawel Jakub Dawidek KASSERT(error == 0, ("Cannot open %s (error=%d).", sc->sc_name, error)); 22213650be51SPawel Jakub Dawidek g_topology_unlock(); 22223650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 22233650be51SPawel Jakub Dawidek 22242d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s.", sc->sc_name, 22252d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 2226501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) == 0) 22272d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 22282d1661a5SPawel Jakub Dawidek KASSERT(disk->d_sync.ds_consumer == NULL, 22292d1661a5SPawel Jakub Dawidek ("Sync consumer already exists (device=%s, disk=%s).", 22302d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk))); 22313650be51SPawel Jakub Dawidek 22323650be51SPawel Jakub Dawidek disk->d_sync.ds_consumer = cp; 22332d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer->private = disk; 223479e61493SPawel Jakub Dawidek disk->d_sync.ds_consumer->index = 0; 22352d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = disk; 22363650be51SPawel Jakub Dawidek 22373650be51SPawel Jakub Dawidek /* 22383650be51SPawel Jakub Dawidek * Allocate memory for synchronization bios and initialize them. 22393650be51SPawel Jakub Dawidek */ 22403650be51SPawel Jakub Dawidek disk->d_sync.ds_bios = malloc(sizeof(struct bio *) * g_raid3_syncreqs, 22413650be51SPawel Jakub Dawidek M_RAID3, M_WAITOK); 22423650be51SPawel Jakub Dawidek for (n = 0; n < g_raid3_syncreqs; n++) { 22433650be51SPawel Jakub Dawidek bp = g_alloc_bio(); 22443650be51SPawel Jakub Dawidek disk->d_sync.ds_bios[n] = bp; 22453650be51SPawel Jakub Dawidek bp->bio_parent = NULL; 22463650be51SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 22473650be51SPawel Jakub Dawidek bp->bio_data = malloc(MAXPHYS, M_RAID3, M_WAITOK); 22483650be51SPawel Jakub Dawidek bp->bio_cflags = 0; 22493650be51SPawel Jakub Dawidek bp->bio_offset = disk->d_sync.ds_offset * (sc->sc_ndisks - 1); 22503650be51SPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 22513650be51SPawel Jakub Dawidek disk->d_sync.ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 22523650be51SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 22533650be51SPawel Jakub Dawidek bp->bio_from = disk->d_sync.ds_consumer; 22543650be51SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 2255ef25813dSRuslan Ermilov bp->bio_caller1 = (void *)(uintptr_t)n; 22563650be51SPawel Jakub Dawidek } 22573650be51SPawel Jakub Dawidek 22583650be51SPawel Jakub Dawidek /* Set the number of in-flight synchronization requests. */ 22593650be51SPawel Jakub Dawidek disk->d_sync.ds_inflight = g_raid3_syncreqs; 22603650be51SPawel Jakub Dawidek 22613650be51SPawel Jakub Dawidek /* 22623650be51SPawel Jakub Dawidek * Fire off first synchronization requests. 22633650be51SPawel Jakub Dawidek */ 22643650be51SPawel Jakub Dawidek for (n = 0; n < g_raid3_syncreqs; n++) { 22653650be51SPawel Jakub Dawidek bp = disk->d_sync.ds_bios[n]; 22663650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 22673650be51SPawel Jakub Dawidek disk->d_sync.ds_consumer->index++; 22683650be51SPawel Jakub Dawidek /* 22693650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a regular request. 22703650be51SPawel Jakub Dawidek */ 22713650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 22723650be51SPawel Jakub Dawidek g_raid3_sync_delay(sc, bp); 22733650be51SPawel Jakub Dawidek else 22743650be51SPawel Jakub Dawidek g_io_request(bp, disk->d_sync.ds_consumer); 22753650be51SPawel Jakub Dawidek } 22762d1661a5SPawel Jakub Dawidek } 22772d1661a5SPawel Jakub Dawidek 22782d1661a5SPawel Jakub Dawidek /* 22792d1661a5SPawel Jakub Dawidek * Stop synchronization process. 22802d1661a5SPawel Jakub Dawidek * type: 0 - synchronization finished 22812d1661a5SPawel Jakub Dawidek * 1 - synchronization stopped 22822d1661a5SPawel Jakub Dawidek */ 22832d1661a5SPawel Jakub Dawidek static void 22842d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(struct g_raid3_softc *sc, int type) 22852d1661a5SPawel Jakub Dawidek { 22862d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 22873650be51SPawel Jakub Dawidek struct g_consumer *cp; 22882d1661a5SPawel Jakub Dawidek 22893650be51SPawel Jakub Dawidek g_topology_assert_not(); 22903650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 22913650be51SPawel Jakub Dawidek 22922d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 22932d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 22942d1661a5SPawel Jakub Dawidek sc->sc_state)); 22952d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 22962d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = NULL; 22972d1661a5SPawel Jakub Dawidek KASSERT(disk != NULL, ("No disk was synchronized (%s).", sc->sc_name)); 22982d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 22992d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 23002d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 23012d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_consumer == NULL) 23022d1661a5SPawel Jakub Dawidek return; 23032d1661a5SPawel Jakub Dawidek 23042d1661a5SPawel Jakub Dawidek if (type == 0) { 23052d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s finished.", 23063650be51SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 23072d1661a5SPawel Jakub Dawidek } else /* if (type == 1) */ { 23082d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s stopped.", 23093650be51SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 23102d1661a5SPawel Jakub Dawidek } 23113650be51SPawel Jakub Dawidek free(disk->d_sync.ds_bios, M_RAID3); 23123650be51SPawel Jakub Dawidek disk->d_sync.ds_bios = NULL; 23133650be51SPawel Jakub Dawidek cp = disk->d_sync.ds_consumer; 23142d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 23152d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 23163650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); /* Avoid recursion on sc_lock. */ 23173650be51SPawel Jakub Dawidek g_topology_lock(); 23183650be51SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cp); 23193650be51SPawel Jakub Dawidek g_topology_unlock(); 23203650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 23212d1661a5SPawel Jakub Dawidek } 23222d1661a5SPawel Jakub Dawidek 23232d1661a5SPawel Jakub Dawidek static void 23242d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(struct g_raid3_softc *sc) 23252d1661a5SPawel Jakub Dawidek { 23262d1661a5SPawel Jakub Dawidek struct g_provider *pp; 2327113d8e50SAlexander Motin struct g_raid3_disk *disk; 2328113d8e50SAlexander Motin int n; 23292d1661a5SPawel Jakub Dawidek 23303650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 23312d1661a5SPawel Jakub Dawidek 23323650be51SPawel Jakub Dawidek g_topology_lock(); 23332d1661a5SPawel Jakub Dawidek pp = g_new_providerf(sc->sc_geom, "raid3/%s", sc->sc_name); 23342d1661a5SPawel Jakub Dawidek pp->mediasize = sc->sc_mediasize; 23352d1661a5SPawel Jakub Dawidek pp->sectorsize = sc->sc_sectorsize; 2336113d8e50SAlexander Motin pp->stripesize = 0; 2337113d8e50SAlexander Motin pp->stripeoffset = 0; 2338113d8e50SAlexander Motin for (n = 0; n < sc->sc_ndisks; n++) { 2339113d8e50SAlexander Motin disk = &sc->sc_disks[n]; 2340113d8e50SAlexander Motin if (disk->d_consumer && disk->d_consumer->provider && 2341113d8e50SAlexander Motin disk->d_consumer->provider->stripesize > pp->stripesize) { 2342113d8e50SAlexander Motin pp->stripesize = disk->d_consumer->provider->stripesize; 2343113d8e50SAlexander Motin pp->stripeoffset = disk->d_consumer->provider->stripeoffset; 2344113d8e50SAlexander Motin } 2345113d8e50SAlexander Motin } 2346113d8e50SAlexander Motin pp->stripesize *= sc->sc_ndisks - 1; 2347113d8e50SAlexander Motin pp->stripeoffset *= sc->sc_ndisks - 1; 23482d1661a5SPawel Jakub Dawidek sc->sc_provider = pp; 23492d1661a5SPawel Jakub Dawidek g_error_provider(pp, 0); 23503650be51SPawel Jakub Dawidek g_topology_unlock(); 23510cca572eSJohn-Mark Gurney G_RAID3_DEBUG(0, "Device %s launched (%u/%u).", pp->name, 23520cca572eSJohn-Mark Gurney g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE), sc->sc_ndisks); 23530cca572eSJohn-Mark Gurney 23542d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED) 23552d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 23562d1661a5SPawel Jakub Dawidek } 23572d1661a5SPawel Jakub Dawidek 23582d1661a5SPawel Jakub Dawidek static void 23592d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(struct g_raid3_softc *sc) 23602d1661a5SPawel Jakub Dawidek { 23612d1661a5SPawel Jakub Dawidek struct bio *bp; 23622d1661a5SPawel Jakub Dawidek 23633650be51SPawel Jakub Dawidek g_topology_assert_not(); 23642d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider != NULL, ("NULL provider (device=%s).", 23652d1661a5SPawel Jakub Dawidek sc->sc_name)); 23662d1661a5SPawel Jakub Dawidek 23673650be51SPawel Jakub Dawidek g_topology_lock(); 23682d1661a5SPawel Jakub Dawidek g_error_provider(sc->sc_provider, ENXIO); 23692d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 23702d1661a5SPawel Jakub Dawidek while ((bp = bioq_first(&sc->sc_queue)) != NULL) { 23712d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 23722d1661a5SPawel Jakub Dawidek g_io_deliver(bp, ENXIO); 23732d1661a5SPawel Jakub Dawidek } 23742d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 23752d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s destroyed.", sc->sc_name, 23762d1661a5SPawel Jakub Dawidek sc->sc_provider->name); 23772d1661a5SPawel Jakub Dawidek sc->sc_provider->flags |= G_PF_WITHER; 23782d1661a5SPawel Jakub Dawidek g_orphan_provider(sc->sc_provider, ENXIO); 23793650be51SPawel Jakub Dawidek g_topology_unlock(); 23802d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 23812d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 23822d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 23832d1661a5SPawel Jakub Dawidek } 23842d1661a5SPawel Jakub Dawidek 23852d1661a5SPawel Jakub Dawidek static void 23862d1661a5SPawel Jakub Dawidek g_raid3_go(void *arg) 23872d1661a5SPawel Jakub Dawidek { 23882d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 23892d1661a5SPawel Jakub Dawidek 23902d1661a5SPawel Jakub Dawidek sc = arg; 23912d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Force device %s start due to timeout.", sc->sc_name); 23922d1661a5SPawel Jakub Dawidek g_raid3_event_send(sc, 0, 23932d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT | G_RAID3_EVENT_DEVICE); 23942d1661a5SPawel Jakub Dawidek } 23952d1661a5SPawel Jakub Dawidek 23962d1661a5SPawel Jakub Dawidek static u_int 23972d1661a5SPawel Jakub Dawidek g_raid3_determine_state(struct g_raid3_disk *disk) 23982d1661a5SPawel Jakub Dawidek { 23992d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 24002d1661a5SPawel Jakub Dawidek u_int state; 24012d1661a5SPawel Jakub Dawidek 24022d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 24032d1661a5SPawel Jakub Dawidek if (sc->sc_syncid == disk->d_sync.ds_syncid) { 24042d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 24052d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) == 0) { 24062d1661a5SPawel Jakub Dawidek /* Disk does not need synchronization. */ 24072d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_ACTIVE; 24082d1661a5SPawel Jakub Dawidek } else { 24092d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 24102d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 24112d1661a5SPawel Jakub Dawidek (disk->d_flags & 24122d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 24132d1661a5SPawel Jakub Dawidek /* 24142d1661a5SPawel Jakub Dawidek * We can start synchronization from 24152d1661a5SPawel Jakub Dawidek * the stored offset. 24162d1661a5SPawel Jakub Dawidek */ 24172d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 24182d1661a5SPawel Jakub Dawidek } else { 24192d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 24202d1661a5SPawel Jakub Dawidek } 24212d1661a5SPawel Jakub Dawidek } 24222d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < sc->sc_syncid) { 24232d1661a5SPawel Jakub Dawidek /* 24242d1661a5SPawel Jakub Dawidek * Reset all synchronization data for this disk, 24252d1661a5SPawel Jakub Dawidek * because if it even was synchronized, it was 24262d1661a5SPawel Jakub Dawidek * synchronized to disks with different syncid. 24272d1661a5SPawel Jakub Dawidek */ 24282d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 24292d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 24302d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 24312d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 24322d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 24332d1661a5SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 24342d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 24352d1661a5SPawel Jakub Dawidek } else { 24362d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 24372d1661a5SPawel Jakub Dawidek } 24382d1661a5SPawel Jakub Dawidek } else /* if (sc->sc_syncid < disk->d_sync.ds_syncid) */ { 24392d1661a5SPawel Jakub Dawidek /* 24402d1661a5SPawel Jakub Dawidek * Not good, NOT GOOD! 24412d1661a5SPawel Jakub Dawidek * It means that device was started on stale disks 24422d1661a5SPawel Jakub Dawidek * and more fresh disk just arrive. 24433c57a41dSPawel Jakub Dawidek * If there were writes, device is broken, sorry. 24442d1661a5SPawel Jakub Dawidek * I think the best choice here is don't touch 2445776fc0e9SYaroslav Tykhiy * this disk and inform the user loudly. 24462d1661a5SPawel Jakub Dawidek */ 24472d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s was started before the freshest " 24482d1661a5SPawel Jakub Dawidek "disk (%s) arrives!! It will not be connected to the " 24492d1661a5SPawel Jakub Dawidek "running device.", sc->sc_name, 24502d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 24512d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 24522d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_NONE; 24532d1661a5SPawel Jakub Dawidek /* Return immediately, because disk was destroyed. */ 24542d1661a5SPawel Jakub Dawidek return (state); 24552d1661a5SPawel Jakub Dawidek } 24562d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "State for %s disk: %s.", 24572d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(state)); 24582d1661a5SPawel Jakub Dawidek return (state); 24592d1661a5SPawel Jakub Dawidek } 24602d1661a5SPawel Jakub Dawidek 24612d1661a5SPawel Jakub Dawidek /* 24622d1661a5SPawel Jakub Dawidek * Update device state. 24632d1661a5SPawel Jakub Dawidek */ 24642d1661a5SPawel Jakub Dawidek static void 2465d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(struct g_raid3_softc *sc, boolean_t force) 24662d1661a5SPawel Jakub Dawidek { 24672d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 24682d1661a5SPawel Jakub Dawidek u_int state; 24692d1661a5SPawel Jakub Dawidek 24703650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 24712d1661a5SPawel Jakub Dawidek 24722d1661a5SPawel Jakub Dawidek switch (sc->sc_state) { 24732d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_STARTING: 24742d1661a5SPawel Jakub Dawidek { 2475a245a548SPawel Jakub Dawidek u_int n, ndirty, ndisks, genid, syncid; 24762d1661a5SPawel Jakub Dawidek 24772d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider == NULL, 24782d1661a5SPawel Jakub Dawidek ("Non-NULL provider in STARTING state (%s).", sc->sc_name)); 24792d1661a5SPawel Jakub Dawidek /* 24802d1661a5SPawel Jakub Dawidek * Are we ready? We are, if all disks are connected or 24812d1661a5SPawel Jakub Dawidek * one disk is missing and 'force' is true. 24822d1661a5SPawel Jakub Dawidek */ 24832d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, -1) + force == sc->sc_ndisks) { 24842d1661a5SPawel Jakub Dawidek if (!force) 24852d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 24862d1661a5SPawel Jakub Dawidek } else { 24872d1661a5SPawel Jakub Dawidek if (force) { 24882d1661a5SPawel Jakub Dawidek /* 24892d1661a5SPawel Jakub Dawidek * Timeout expired, so destroy device. 24902d1661a5SPawel Jakub Dawidek */ 24912d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 24924ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", 24934ed854e8SPawel Jakub Dawidek __LINE__, sc->sc_rootmount); 24944ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 24954ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 24962d1661a5SPawel Jakub Dawidek } 24972d1661a5SPawel Jakub Dawidek return; 24982d1661a5SPawel Jakub Dawidek } 24992d1661a5SPawel Jakub Dawidek 25002d1661a5SPawel Jakub Dawidek /* 2501a245a548SPawel Jakub Dawidek * Find the biggest genid. 2502a245a548SPawel Jakub Dawidek */ 2503a245a548SPawel Jakub Dawidek genid = 0; 2504a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2505a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2506a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2507a245a548SPawel Jakub Dawidek continue; 2508a245a548SPawel Jakub Dawidek if (disk->d_genid > genid) 2509a245a548SPawel Jakub Dawidek genid = disk->d_genid; 2510a245a548SPawel Jakub Dawidek } 2511a245a548SPawel Jakub Dawidek sc->sc_genid = genid; 2512a245a548SPawel Jakub Dawidek /* 2513a245a548SPawel Jakub Dawidek * Remove all disks without the biggest genid. 2514a245a548SPawel Jakub Dawidek */ 2515a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2516a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2517a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2518a245a548SPawel Jakub Dawidek continue; 2519a245a548SPawel Jakub Dawidek if (disk->d_genid < genid) { 2520a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2521a245a548SPawel Jakub Dawidek "Component %s (device %s) broken, skipping.", 2522a245a548SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 2523a245a548SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 2524a245a548SPawel Jakub Dawidek } 2525a245a548SPawel Jakub Dawidek } 2526a245a548SPawel Jakub Dawidek 2527a245a548SPawel Jakub Dawidek /* 25282d1661a5SPawel Jakub Dawidek * There must be at least 'sc->sc_ndisks - 1' components 25292d1661a5SPawel Jakub Dawidek * with the same syncid and without SYNCHRONIZING flag. 25302d1661a5SPawel Jakub Dawidek */ 25312d1661a5SPawel Jakub Dawidek 25322d1661a5SPawel Jakub Dawidek /* 25332d1661a5SPawel Jakub Dawidek * Find the biggest syncid, number of valid components and 25342d1661a5SPawel Jakub Dawidek * number of dirty components. 25352d1661a5SPawel Jakub Dawidek */ 25362d1661a5SPawel Jakub Dawidek ndirty = ndisks = syncid = 0; 25372d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 25382d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 25392d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 25402d1661a5SPawel Jakub Dawidek continue; 25412d1661a5SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) 25422d1661a5SPawel Jakub Dawidek ndirty++; 25432d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_syncid > syncid) { 25442d1661a5SPawel Jakub Dawidek syncid = disk->d_sync.ds_syncid; 25452d1661a5SPawel Jakub Dawidek ndisks = 0; 25462d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < syncid) { 25472d1661a5SPawel Jakub Dawidek continue; 25482d1661a5SPawel Jakub Dawidek } 25492d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 25502d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) != 0) { 25512d1661a5SPawel Jakub Dawidek continue; 25522d1661a5SPawel Jakub Dawidek } 25532d1661a5SPawel Jakub Dawidek ndisks++; 25542d1661a5SPawel Jakub Dawidek } 25552d1661a5SPawel Jakub Dawidek /* 25562d1661a5SPawel Jakub Dawidek * Do we have enough valid components? 25572d1661a5SPawel Jakub Dawidek */ 25582d1661a5SPawel Jakub Dawidek if (ndisks + 1 < sc->sc_ndisks) { 25592d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 25602d1661a5SPawel Jakub Dawidek "Device %s is broken, too few valid components.", 25612d1661a5SPawel Jakub Dawidek sc->sc_name); 25622d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 25632d1661a5SPawel Jakub Dawidek return; 25642d1661a5SPawel Jakub Dawidek } 25652d1661a5SPawel Jakub Dawidek /* 25662d1661a5SPawel Jakub Dawidek * If there is one DIRTY component and all disks are present, 25672d1661a5SPawel Jakub Dawidek * mark it for synchronization. If there is more than one DIRTY 25682d1661a5SPawel Jakub Dawidek * component, mark parity component for synchronization. 25692d1661a5SPawel Jakub Dawidek */ 25702d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks && ndirty == 1) { 25712d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 25722d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 25732d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 25742d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_DIRTY) == 0) { 25752d1661a5SPawel Jakub Dawidek continue; 25762d1661a5SPawel Jakub Dawidek } 25772d1661a5SPawel Jakub Dawidek disk->d_flags |= 25782d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING; 25792d1661a5SPawel Jakub Dawidek } 25802d1661a5SPawel Jakub Dawidek } else if (ndisks == sc->sc_ndisks && ndirty > 1) { 25812d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 25822d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 25832d1661a5SPawel Jakub Dawidek } 25842d1661a5SPawel Jakub Dawidek 25852d1661a5SPawel Jakub Dawidek sc->sc_syncid = syncid; 25862d1661a5SPawel Jakub Dawidek if (force) { 25872d1661a5SPawel Jakub Dawidek /* Remember to bump syncid on first write. */ 2588ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 25892d1661a5SPawel Jakub Dawidek } 25902d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks) 25912d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 25922d1661a5SPawel Jakub Dawidek else /* if (ndisks == sc->sc_ndisks - 1) */ 25932d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 25942d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s state changed from %s to %s.", 25952d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 25962d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 25972d1661a5SPawel Jakub Dawidek sc->sc_state = state; 25982d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 25992d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 26002d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 26012d1661a5SPawel Jakub Dawidek continue; 26022d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 26032d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, state, G_RAID3_EVENT_DONTWAIT); 2604a245a548SPawel Jakub Dawidek if (state == G_RAID3_DISK_STATE_STALE) 2605ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 26062d1661a5SPawel Jakub Dawidek } 26072d1661a5SPawel Jakub Dawidek break; 26082d1661a5SPawel Jakub Dawidek } 26092d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_DEGRADED: 26102d1661a5SPawel Jakub Dawidek /* 2611ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 26122d1661a5SPawel Jakub Dawidek */ 2613ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2614a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2615a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2616a245a548SPawel Jakub Dawidek } 2617a245a548SPawel Jakub Dawidek 26182d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 26192d1661a5SPawel Jakub Dawidek return; 26202d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < 26212d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 26222d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 26232d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 26242d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 26252d1661a5SPawel Jakub Dawidek return; 26262d1661a5SPawel Jakub Dawidek } 26272d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 26282d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 26292d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 26302d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26312d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 26322d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 26332d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 26342d1661a5SPawel Jakub Dawidek sc->sc_state = state; 26352d1661a5SPawel Jakub Dawidek } 26362d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 26372d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 26384ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 26394ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 26404ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 26414ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 26424ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 26434ed854e8SPawel Jakub Dawidek } 26442d1661a5SPawel Jakub Dawidek break; 26452d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_COMPLETE: 26462d1661a5SPawel Jakub Dawidek /* 2647ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 26482d1661a5SPawel Jakub Dawidek */ 2649ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2650a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2651a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2652a245a548SPawel Jakub Dawidek } 2653a245a548SPawel Jakub Dawidek 26542d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 26552d1661a5SPawel Jakub Dawidek return; 26562d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) >= 26572d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1, 26582d1661a5SPawel Jakub Dawidek ("Too few ACTIVE components in COMPLETE state (device %s).", 26592d1661a5SPawel Jakub Dawidek sc->sc_name)); 26602d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 26612d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 26622d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 26632d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26642d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 26652d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 26662d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 26672d1661a5SPawel Jakub Dawidek sc->sc_state = state; 26682d1661a5SPawel Jakub Dawidek } 26692d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 26702d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 26714ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 26724ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 26734ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 26744ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 26754ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 26764ed854e8SPawel Jakub Dawidek } 26772d1661a5SPawel Jakub Dawidek break; 26782d1661a5SPawel Jakub Dawidek default: 26792d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s).", sc->sc_name, 26802d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state))); 26812d1661a5SPawel Jakub Dawidek break; 26822d1661a5SPawel Jakub Dawidek } 26832d1661a5SPawel Jakub Dawidek } 26842d1661a5SPawel Jakub Dawidek 26852d1661a5SPawel Jakub Dawidek /* 26862d1661a5SPawel Jakub Dawidek * Update disk state and device state if needed. 26872d1661a5SPawel Jakub Dawidek */ 26882d1661a5SPawel Jakub Dawidek #define DISK_STATE_CHANGED() G_RAID3_DEBUG(1, \ 26892d1661a5SPawel Jakub Dawidek "Disk %s state changed from %s to %s (device %s).", \ 26902d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), \ 26912d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state), \ 26922d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state), sc->sc_name) 26932d1661a5SPawel Jakub Dawidek static int 2694d97d5ee9SPawel Jakub Dawidek g_raid3_update_disk(struct g_raid3_disk *disk, u_int state) 26952d1661a5SPawel Jakub Dawidek { 26962d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 26972d1661a5SPawel Jakub Dawidek 26982d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 26993650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 27003650be51SPawel Jakub Dawidek 27012d1661a5SPawel Jakub Dawidek again: 27022d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Changing disk %s state from %s to %s.", 27032d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(disk->d_state), 27042d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state)); 27052d1661a5SPawel Jakub Dawidek switch (state) { 27062d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 27072d1661a5SPawel Jakub Dawidek /* 27082d1661a5SPawel Jakub Dawidek * Possible scenarios: 27092d1661a5SPawel Jakub Dawidek * 1. New disk arrive. 27102d1661a5SPawel Jakub Dawidek */ 27112d1661a5SPawel Jakub Dawidek /* Previous state should be NONE. */ 27122d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NONE, 27132d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27142d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27152d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27162d1661a5SPawel Jakub Dawidek 27172d1661a5SPawel Jakub Dawidek disk->d_state = state; 27180cca572eSJohn-Mark Gurney G_RAID3_DEBUG(1, "Device %s: provider %s detected.", 27192d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27202d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) 27212d1661a5SPawel Jakub Dawidek break; 27222d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27232d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27242d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27252d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27262d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27272d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27282d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 27292d1661a5SPawel Jakub Dawidek if (state != G_RAID3_DISK_STATE_NONE) 27302d1661a5SPawel Jakub Dawidek goto again; 27312d1661a5SPawel Jakub Dawidek break; 27322d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 27332d1661a5SPawel Jakub Dawidek /* 27342d1661a5SPawel Jakub Dawidek * Possible scenarios: 27352d1661a5SPawel Jakub Dawidek * 1. New disk does not need synchronization. 27362d1661a5SPawel Jakub Dawidek * 2. Synchronization process finished successfully. 27372d1661a5SPawel Jakub Dawidek */ 27382d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27392d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27402d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27412d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27422d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27432d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27442d1661a5SPawel Jakub Dawidek /* Previous state should be NEW or SYNCHRONIZING. */ 27452d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW || 27462d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 27472d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27482d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27492d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27502d1661a5SPawel Jakub Dawidek 2751bf31327cSPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 27522d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_SYNCHRONIZING; 27532d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_FORCE_SYNC; 27542d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 0); 27552d1661a5SPawel Jakub Dawidek } 27562d1661a5SPawel Jakub Dawidek disk->d_state = state; 27572d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 27582d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 27590962f942SPawel Jakub Dawidek g_raid3_update_idle(sc, disk); 2760bf31327cSPawel Jakub Dawidek g_raid3_update_metadata(disk); 27610cca572eSJohn-Mark Gurney G_RAID3_DEBUG(1, "Device %s: provider %s activated.", 27622d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27632d1661a5SPawel Jakub Dawidek break; 27642d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 27652d1661a5SPawel Jakub Dawidek /* 27662d1661a5SPawel Jakub Dawidek * Possible scenarios: 27672d1661a5SPawel Jakub Dawidek * 1. Stale disk was connected. 27682d1661a5SPawel Jakub Dawidek */ 27692d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 27702d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 27712d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27722d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27732d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27742d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27752d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27762d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27772d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27782d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27792d1661a5SPawel Jakub Dawidek /* 27802d1661a5SPawel Jakub Dawidek * STALE state is only possible if device is marked 27812d1661a5SPawel Jakub Dawidek * NOAUTOSYNC. 27822d1661a5SPawel Jakub Dawidek */ 27832d1661a5SPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) != 0, 27842d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27852d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27862d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27872d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27882d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27892d1661a5SPawel Jakub Dawidek 27902d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 27912d1661a5SPawel Jakub Dawidek disk->d_state = state; 27922d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27932d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s is stale.", 27942d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27952d1661a5SPawel Jakub Dawidek break; 27962d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 27972d1661a5SPawel Jakub Dawidek /* 27982d1661a5SPawel Jakub Dawidek * Possible scenarios: 27992d1661a5SPawel Jakub Dawidek * 1. Disk which needs synchronization was connected. 28002d1661a5SPawel Jakub Dawidek */ 28012d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 28022d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 28032d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 28042d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28052d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 28062d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 28072d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 28082d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 28092d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28102d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28112d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 28122d1661a5SPawel Jakub Dawidek 28132d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NEW) 28142d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 28152d1661a5SPawel Jakub Dawidek disk->d_state = state; 28162d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) { 28172d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 28182d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 28192d1661a5SPawel Jakub Dawidek } 28202d1661a5SPawel Jakub Dawidek break; 28212d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_DISCONNECTED: 28222d1661a5SPawel Jakub Dawidek /* 28232d1661a5SPawel Jakub Dawidek * Possible scenarios: 28242d1661a5SPawel Jakub Dawidek * 1. Device wasn't running yet, but disk disappear. 28252d1661a5SPawel Jakub Dawidek * 2. Disk was active and disapppear. 28262d1661a5SPawel Jakub Dawidek * 3. Disk disappear during synchronization process. 28272d1661a5SPawel Jakub Dawidek */ 28282d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 28292d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 28302d1661a5SPawel Jakub Dawidek /* 28312d1661a5SPawel Jakub Dawidek * Previous state should be ACTIVE, STALE or 28322d1661a5SPawel Jakub Dawidek * SYNCHRONIZING. 28332d1661a5SPawel Jakub Dawidek */ 28342d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 28352d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_STALE || 28362d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 28372d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 28382d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28392d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28402d1661a5SPawel Jakub Dawidek } else if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) { 28412d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 28422d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 28432d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 28442d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28452d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28462d1661a5SPawel Jakub Dawidek /* 28472d1661a5SPawel Jakub Dawidek * Reset bumping syncid if disk disappeared in STARTING 28482d1661a5SPawel Jakub Dawidek * state. 28492d1661a5SPawel Jakub Dawidek */ 2850ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) 2851a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 28522d1661a5SPawel Jakub Dawidek #ifdef INVARIANTS 28532d1661a5SPawel Jakub Dawidek } else { 28542d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s, %s, %s).", 28552d1661a5SPawel Jakub Dawidek sc->sc_name, 28562d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 28572d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28582d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28592d1661a5SPawel Jakub Dawidek #endif 28602d1661a5SPawel Jakub Dawidek } 28612d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 28622d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s disconnected.", 28632d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 28642d1661a5SPawel Jakub Dawidek 28652d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 28662d1661a5SPawel Jakub Dawidek break; 28672d1661a5SPawel Jakub Dawidek default: 28682d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Unknown state (%u).", state)); 28692d1661a5SPawel Jakub Dawidek break; 28702d1661a5SPawel Jakub Dawidek } 28712d1661a5SPawel Jakub Dawidek return (0); 28722d1661a5SPawel Jakub Dawidek } 28732d1661a5SPawel Jakub Dawidek #undef DISK_STATE_CHANGED 28742d1661a5SPawel Jakub Dawidek 2875ea973705SPawel Jakub Dawidek int 28762d1661a5SPawel Jakub Dawidek g_raid3_read_metadata(struct g_consumer *cp, struct g_raid3_metadata *md) 28772d1661a5SPawel Jakub Dawidek { 28782d1661a5SPawel Jakub Dawidek struct g_provider *pp; 28792d1661a5SPawel Jakub Dawidek u_char *buf; 28802d1661a5SPawel Jakub Dawidek int error; 28812d1661a5SPawel Jakub Dawidek 28822d1661a5SPawel Jakub Dawidek g_topology_assert(); 28832d1661a5SPawel Jakub Dawidek 28842d1661a5SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 28852d1661a5SPawel Jakub Dawidek if (error != 0) 28862d1661a5SPawel Jakub Dawidek return (error); 28872d1661a5SPawel Jakub Dawidek pp = cp->provider; 28882d1661a5SPawel Jakub Dawidek g_topology_unlock(); 28892d1661a5SPawel Jakub Dawidek /* Metadata are stored on last sector. */ 28902d1661a5SPawel Jakub Dawidek buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize, 28912d1661a5SPawel Jakub Dawidek &error); 28922d1661a5SPawel Jakub Dawidek g_topology_lock(); 28932d1661a5SPawel Jakub Dawidek g_access(cp, -1, 0, 0); 28948a4a44b5SMaxim Sobolev if (buf == NULL) { 2895a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot read metadata from %s (error=%d).", 2896a245a548SPawel Jakub Dawidek cp->provider->name, error); 28972d1661a5SPawel Jakub Dawidek return (error); 28982d1661a5SPawel Jakub Dawidek } 28992d1661a5SPawel Jakub Dawidek 29002d1661a5SPawel Jakub Dawidek /* Decode metadata. */ 29012d1661a5SPawel Jakub Dawidek error = raid3_metadata_decode(buf, md); 29022d1661a5SPawel Jakub Dawidek g_free(buf); 29032d1661a5SPawel Jakub Dawidek if (strcmp(md->md_magic, G_RAID3_MAGIC) != 0) 29042d1661a5SPawel Jakub Dawidek return (EINVAL); 2905a245a548SPawel Jakub Dawidek if (md->md_version > G_RAID3_VERSION) { 2906a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2907a245a548SPawel Jakub Dawidek "Kernel module is too old to handle metadata from %s.", 2908a245a548SPawel Jakub Dawidek cp->provider->name); 2909a245a548SPawel Jakub Dawidek return (EINVAL); 2910a245a548SPawel Jakub Dawidek } 29112d1661a5SPawel Jakub Dawidek if (error != 0) { 29122d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "MD5 metadata hash mismatch for provider %s.", 29132d1661a5SPawel Jakub Dawidek cp->provider->name); 29142d1661a5SPawel Jakub Dawidek return (error); 29152d1661a5SPawel Jakub Dawidek } 291695959703SAndrey V. Elsukov if (md->md_sectorsize > MAXPHYS) { 291795959703SAndrey V. Elsukov G_RAID3_DEBUG(0, "The blocksize is too big."); 291895959703SAndrey V. Elsukov return (EINVAL); 291995959703SAndrey V. Elsukov } 29202d1661a5SPawel Jakub Dawidek 29212d1661a5SPawel Jakub Dawidek return (0); 29222d1661a5SPawel Jakub Dawidek } 29232d1661a5SPawel Jakub Dawidek 29242d1661a5SPawel Jakub Dawidek static int 29252d1661a5SPawel Jakub Dawidek g_raid3_check_metadata(struct g_raid3_softc *sc, struct g_provider *pp, 29262d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 29272d1661a5SPawel Jakub Dawidek { 29282d1661a5SPawel Jakub Dawidek 29292d1661a5SPawel Jakub Dawidek if (md->md_no >= sc->sc_ndisks) { 29302d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Invalid disk %s number (no=%u), skipping.", 29312d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 29322d1661a5SPawel Jakub Dawidek return (EINVAL); 29332d1661a5SPawel Jakub Dawidek } 29342d1661a5SPawel Jakub Dawidek if (sc->sc_disks[md->md_no].d_state != G_RAID3_DISK_STATE_NODISK) { 29352d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (no=%u) already exists, skipping.", 29362d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 29372d1661a5SPawel Jakub Dawidek return (EEXIST); 29382d1661a5SPawel Jakub Dawidek } 29392d1661a5SPawel Jakub Dawidek if (md->md_all != sc->sc_ndisks) { 29402d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29412d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29422d1661a5SPawel Jakub Dawidek "md_all", pp->name, sc->sc_name); 29432d1661a5SPawel Jakub Dawidek return (EINVAL); 29442d1661a5SPawel Jakub Dawidek } 294511b2174fSPawel Jakub Dawidek if ((md->md_mediasize % md->md_sectorsize) != 0) { 294611b2174fSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Invalid metadata (mediasize %% sectorsize != " 294711b2174fSPawel Jakub Dawidek "0) on disk %s (device %s), skipping.", pp->name, 294811b2174fSPawel Jakub Dawidek sc->sc_name); 294911b2174fSPawel Jakub Dawidek return (EINVAL); 295011b2174fSPawel Jakub Dawidek } 29512d1661a5SPawel Jakub Dawidek if (md->md_mediasize != sc->sc_mediasize) { 29522d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29532d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29542d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 29552d1661a5SPawel Jakub Dawidek return (EINVAL); 29562d1661a5SPawel Jakub Dawidek } 29572d1661a5SPawel Jakub Dawidek if ((md->md_mediasize % (sc->sc_ndisks - 1)) != 0) { 29582d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29592d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29602d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 29612d1661a5SPawel Jakub Dawidek return (EINVAL); 29622d1661a5SPawel Jakub Dawidek } 29632d1661a5SPawel Jakub Dawidek if ((sc->sc_mediasize / (sc->sc_ndisks - 1)) > pp->mediasize) { 29642d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29652d1661a5SPawel Jakub Dawidek "Invalid size of disk %s (device %s), skipping.", pp->name, 29662d1661a5SPawel Jakub Dawidek sc->sc_name); 29672d1661a5SPawel Jakub Dawidek return (EINVAL); 29682d1661a5SPawel Jakub Dawidek } 29692d1661a5SPawel Jakub Dawidek if ((md->md_sectorsize / pp->sectorsize) < sc->sc_ndisks - 1) { 29702d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29712d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29722d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 29732d1661a5SPawel Jakub Dawidek return (EINVAL); 29742d1661a5SPawel Jakub Dawidek } 29752d1661a5SPawel Jakub Dawidek if (md->md_sectorsize != sc->sc_sectorsize) { 29762d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29772d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29782d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 29792d1661a5SPawel Jakub Dawidek return (EINVAL); 29802d1661a5SPawel Jakub Dawidek } 29812d1661a5SPawel Jakub Dawidek if ((sc->sc_sectorsize % pp->sectorsize) != 0) { 29822d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29832d1661a5SPawel Jakub Dawidek "Invalid sector size of disk %s (device %s), skipping.", 29842d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 29852d1661a5SPawel Jakub Dawidek return (EINVAL); 29862d1661a5SPawel Jakub Dawidek } 29872d1661a5SPawel Jakub Dawidek if ((md->md_mflags & ~G_RAID3_DEVICE_FLAG_MASK) != 0) { 29882d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29892d1661a5SPawel Jakub Dawidek "Invalid device flags on disk %s (device %s), skipping.", 29902d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 29912d1661a5SPawel Jakub Dawidek return (EINVAL); 29922d1661a5SPawel Jakub Dawidek } 2993dba915cfSPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 2994dba915cfSPawel Jakub Dawidek (md->md_mflags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0) { 2995dba915cfSPawel Jakub Dawidek /* 2996dba915cfSPawel Jakub Dawidek * VERIFY and ROUND-ROBIN options are mutally exclusive. 2997dba915cfSPawel Jakub Dawidek */ 2998dba915cfSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Both VERIFY and ROUND-ROBIN flags exist on " 2999dba915cfSPawel Jakub Dawidek "disk %s (device %s), skipping.", pp->name, sc->sc_name); 3000dba915cfSPawel Jakub Dawidek return (EINVAL); 3001dba915cfSPawel Jakub Dawidek } 30022d1661a5SPawel Jakub Dawidek if ((md->md_dflags & ~G_RAID3_DISK_FLAG_MASK) != 0) { 30032d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 30042d1661a5SPawel Jakub Dawidek "Invalid disk flags on disk %s (device %s), skipping.", 30052d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 30062d1661a5SPawel Jakub Dawidek return (EINVAL); 30072d1661a5SPawel Jakub Dawidek } 30082d1661a5SPawel Jakub Dawidek return (0); 30092d1661a5SPawel Jakub Dawidek } 30102d1661a5SPawel Jakub Dawidek 3011ea973705SPawel Jakub Dawidek int 30122d1661a5SPawel Jakub Dawidek g_raid3_add_disk(struct g_raid3_softc *sc, struct g_provider *pp, 30132d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 30142d1661a5SPawel Jakub Dawidek { 30152d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 30162d1661a5SPawel Jakub Dawidek int error; 30172d1661a5SPawel Jakub Dawidek 30183650be51SPawel Jakub Dawidek g_topology_assert_not(); 30192d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Adding disk %s.", pp->name); 30202d1661a5SPawel Jakub Dawidek 30212d1661a5SPawel Jakub Dawidek error = g_raid3_check_metadata(sc, pp, md); 30222d1661a5SPawel Jakub Dawidek if (error != 0) 30232d1661a5SPawel Jakub Dawidek return (error); 3024a245a548SPawel Jakub Dawidek if (sc->sc_state != G_RAID3_DEVICE_STATE_STARTING && 3025a245a548SPawel Jakub Dawidek md->md_genid < sc->sc_genid) { 3026a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Component %s (device %s) broken, skipping.", 3027a245a548SPawel Jakub Dawidek pp->name, sc->sc_name); 3028a245a548SPawel Jakub Dawidek return (EINVAL); 3029a245a548SPawel Jakub Dawidek } 30302d1661a5SPawel Jakub Dawidek disk = g_raid3_init_disk(sc, pp, md, &error); 30312d1661a5SPawel Jakub Dawidek if (disk == NULL) 30322d1661a5SPawel Jakub Dawidek return (error); 30332d1661a5SPawel Jakub Dawidek error = g_raid3_event_send(disk, G_RAID3_DISK_STATE_NEW, 30342d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_WAIT); 3035a245a548SPawel Jakub Dawidek if (error != 0) 30362d1661a5SPawel Jakub Dawidek return (error); 3037a245a548SPawel Jakub Dawidek if (md->md_version < G_RAID3_VERSION) { 3038a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Upgrading metadata on %s (v%d->v%d).", 3039a245a548SPawel Jakub Dawidek pp->name, md->md_version, G_RAID3_VERSION); 3040a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 3041a245a548SPawel Jakub Dawidek } 3042a245a548SPawel Jakub Dawidek return (0); 30432d1661a5SPawel Jakub Dawidek } 30442d1661a5SPawel Jakub Dawidek 3045712fe9bdSPawel Jakub Dawidek static void 3046712fe9bdSPawel Jakub Dawidek g_raid3_destroy_delayed(void *arg, int flag) 3047712fe9bdSPawel Jakub Dawidek { 3048712fe9bdSPawel Jakub Dawidek struct g_raid3_softc *sc; 3049712fe9bdSPawel Jakub Dawidek int error; 3050712fe9bdSPawel Jakub Dawidek 3051712fe9bdSPawel Jakub Dawidek if (flag == EV_CANCEL) { 3052712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Destroying canceled."); 3053712fe9bdSPawel Jakub Dawidek return; 3054712fe9bdSPawel Jakub Dawidek } 3055712fe9bdSPawel Jakub Dawidek sc = arg; 3056712fe9bdSPawel Jakub Dawidek g_topology_unlock(); 3057712fe9bdSPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3058712fe9bdSPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) == 0, 3059712fe9bdSPawel Jakub Dawidek ("DESTROY flag set on %s.", sc->sc_name)); 3060712fe9bdSPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROYING) != 0, 3061712fe9bdSPawel Jakub Dawidek ("DESTROYING flag not set on %s.", sc->sc_name)); 3062712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Destroying %s (delayed).", sc->sc_name); 3063712fe9bdSPawel Jakub Dawidek error = g_raid3_destroy(sc, G_RAID3_DESTROY_SOFT); 3064712fe9bdSPawel Jakub Dawidek if (error != 0) { 3065712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot destroy %s.", sc->sc_name); 3066712fe9bdSPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 3067712fe9bdSPawel Jakub Dawidek } 3068712fe9bdSPawel Jakub Dawidek g_topology_lock(); 3069712fe9bdSPawel Jakub Dawidek } 3070712fe9bdSPawel Jakub Dawidek 30712d1661a5SPawel Jakub Dawidek static int 30722d1661a5SPawel Jakub Dawidek g_raid3_access(struct g_provider *pp, int acr, int acw, int ace) 30732d1661a5SPawel Jakub Dawidek { 30742d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 3075712fe9bdSPawel Jakub Dawidek int dcr, dcw, dce, error = 0; 30762d1661a5SPawel Jakub Dawidek 30772d1661a5SPawel Jakub Dawidek g_topology_assert(); 30782d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access request for %s: r%dw%de%d.", pp->name, acr, 30792d1661a5SPawel Jakub Dawidek acw, ace); 30802d1661a5SPawel Jakub Dawidek 30811f7fec3cSPawel Jakub Dawidek sc = pp->geom->softc; 30821f7fec3cSPawel Jakub Dawidek if (sc == NULL && acr <= 0 && acw <= 0 && ace <= 0) 30831f7fec3cSPawel Jakub Dawidek return (0); 30841f7fec3cSPawel Jakub Dawidek KASSERT(sc != NULL, ("NULL softc (provider=%s).", pp->name)); 30851f7fec3cSPawel Jakub Dawidek 30862d1661a5SPawel Jakub Dawidek dcr = pp->acr + acr; 30872d1661a5SPawel Jakub Dawidek dcw = pp->acw + acw; 30882d1661a5SPawel Jakub Dawidek dce = pp->ace + ace; 30892d1661a5SPawel Jakub Dawidek 30903650be51SPawel Jakub Dawidek g_topology_unlock(); 30913650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3092712fe9bdSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0 || 30933650be51SPawel Jakub Dawidek g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < sc->sc_ndisks - 1) { 30943650be51SPawel Jakub Dawidek if (acr > 0 || acw > 0 || ace > 0) 30953650be51SPawel Jakub Dawidek error = ENXIO; 30963650be51SPawel Jakub Dawidek goto end; 30972d1661a5SPawel Jakub Dawidek } 30980962f942SPawel Jakub Dawidek if (dcw == 0 && !sc->sc_idle) 30993650be51SPawel Jakub Dawidek g_raid3_idle(sc, dcw); 3100712fe9bdSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROYING) != 0) { 3101712fe9bdSPawel Jakub Dawidek if (acr > 0 || acw > 0 || ace > 0) { 3102712fe9bdSPawel Jakub Dawidek error = ENXIO; 3103712fe9bdSPawel Jakub Dawidek goto end; 3104712fe9bdSPawel Jakub Dawidek } 3105712fe9bdSPawel Jakub Dawidek if (dcr == 0 && dcw == 0 && dce == 0) { 3106712fe9bdSPawel Jakub Dawidek g_post_event(g_raid3_destroy_delayed, sc, M_WAITOK, 3107712fe9bdSPawel Jakub Dawidek sc, NULL); 3108712fe9bdSPawel Jakub Dawidek } 3109712fe9bdSPawel Jakub Dawidek } 31103650be51SPawel Jakub Dawidek end: 31113650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 31123650be51SPawel Jakub Dawidek g_topology_lock(); 31133650be51SPawel Jakub Dawidek return (error); 31142d1661a5SPawel Jakub Dawidek } 31152d1661a5SPawel Jakub Dawidek 31162d1661a5SPawel Jakub Dawidek static struct g_geom * 31172d1661a5SPawel Jakub Dawidek g_raid3_create(struct g_class *mp, const struct g_raid3_metadata *md) 31182d1661a5SPawel Jakub Dawidek { 31192d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 31202d1661a5SPawel Jakub Dawidek struct g_geom *gp; 31212d1661a5SPawel Jakub Dawidek int error, timeout; 31222d1661a5SPawel Jakub Dawidek u_int n; 31232d1661a5SPawel Jakub Dawidek 31242d1661a5SPawel Jakub Dawidek g_topology_assert(); 31252d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Creating device %s (id=%u).", md->md_name, md->md_id); 31262d1661a5SPawel Jakub Dawidek 31272d1661a5SPawel Jakub Dawidek /* One disk is minimum. */ 31282d1661a5SPawel Jakub Dawidek if (md->md_all < 1) 31292d1661a5SPawel Jakub Dawidek return (NULL); 31302d1661a5SPawel Jakub Dawidek /* 31312d1661a5SPawel Jakub Dawidek * Action geom. 31322d1661a5SPawel Jakub Dawidek */ 31332d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s", md->md_name); 31342d1661a5SPawel Jakub Dawidek sc = malloc(sizeof(*sc), M_RAID3, M_WAITOK | M_ZERO); 31352d1661a5SPawel Jakub Dawidek sc->sc_disks = malloc(sizeof(struct g_raid3_disk) * md->md_all, M_RAID3, 31362d1661a5SPawel Jakub Dawidek M_WAITOK | M_ZERO); 31372d1661a5SPawel Jakub Dawidek gp->start = g_raid3_start; 31382d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 31392d1661a5SPawel Jakub Dawidek gp->access = g_raid3_access; 31402d1661a5SPawel Jakub Dawidek gp->dumpconf = g_raid3_dumpconf; 31412d1661a5SPawel Jakub Dawidek 31422d1661a5SPawel Jakub Dawidek sc->sc_id = md->md_id; 31432d1661a5SPawel Jakub Dawidek sc->sc_mediasize = md->md_mediasize; 31442d1661a5SPawel Jakub Dawidek sc->sc_sectorsize = md->md_sectorsize; 31452d1661a5SPawel Jakub Dawidek sc->sc_ndisks = md->md_all; 3146f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 31472d1661a5SPawel Jakub Dawidek sc->sc_flags = md->md_mflags; 3148a245a548SPawel Jakub Dawidek sc->sc_bump_id = 0; 31490962f942SPawel Jakub Dawidek sc->sc_idle = 1; 315001f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 31510962f942SPawel Jakub Dawidek sc->sc_writes = 0; 3152afd05d74SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 3153afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_softc = sc; 3154afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_no = n; 31552d1661a5SPawel Jakub Dawidek sc->sc_disks[n].d_state = G_RAID3_DISK_STATE_NODISK; 3156afd05d74SPawel Jakub Dawidek } 31573650be51SPawel Jakub Dawidek sx_init(&sc->sc_lock, "graid3:lock"); 31582d1661a5SPawel Jakub Dawidek bioq_init(&sc->sc_queue); 31592d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_queue_mtx, "graid3:queue", NULL, MTX_DEF); 31603650be51SPawel Jakub Dawidek bioq_init(&sc->sc_regular_delayed); 31613650be51SPawel Jakub Dawidek bioq_init(&sc->sc_inflight); 31623650be51SPawel Jakub Dawidek bioq_init(&sc->sc_sync_delayed); 31632d1661a5SPawel Jakub Dawidek TAILQ_INIT(&sc->sc_events); 31642d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_events_mtx, "graid3:events", NULL, MTX_DEF); 31652d1661a5SPawel Jakub Dawidek callout_init(&sc->sc_callout, CALLOUT_MPSAFE); 31662d1661a5SPawel Jakub Dawidek sc->sc_state = G_RAID3_DEVICE_STATE_STARTING; 31672d1661a5SPawel Jakub Dawidek gp->softc = sc; 31682d1661a5SPawel Jakub Dawidek sc->sc_geom = gp; 31692d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 31702d1661a5SPawel Jakub Dawidek /* 31712d1661a5SPawel Jakub Dawidek * Synchronization geom. 31722d1661a5SPawel Jakub Dawidek */ 31732d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s.sync", md->md_name); 31742d1661a5SPawel Jakub Dawidek gp->softc = sc; 31752d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 31762d1661a5SPawel Jakub Dawidek sc->sc_sync.ds_geom = gp; 31773650be51SPawel Jakub Dawidek 3178ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 3179ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_zone = uma_zcreate("gr3:64k", 3180ed940a82SPawel Jakub Dawidek 65536, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3181ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 31823650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_inuse = 0; 31833650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_max = g_raid3_n64k; 31843650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_requested = 31853650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_failed = 0; 3186ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_zone = uma_zcreate("gr3:16k", 3187ed940a82SPawel Jakub Dawidek 16384, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3188ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 31893650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_inuse = 0; 31903650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_max = g_raid3_n16k; 31913650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_requested = 31923650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_failed = 0; 3193ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_zone = uma_zcreate("gr3:4k", 3194ed940a82SPawel Jakub Dawidek 4096, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3195ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 31963650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_inuse = 0; 31973650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_max = g_raid3_n4k; 31983650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_requested = 31993650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_failed = 0; 3200ed940a82SPawel Jakub Dawidek } 32013650be51SPawel Jakub Dawidek 32023745c395SJulian Elischer error = kproc_create(g_raid3_worker, sc, &sc->sc_worker, 0, 0, 32032d1661a5SPawel Jakub Dawidek "g_raid3 %s", md->md_name); 32042d1661a5SPawel Jakub Dawidek if (error != 0) { 32052d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot create kernel thread for %s.", 32062d1661a5SPawel Jakub Dawidek sc->sc_name); 3207ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 32083650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_64K].sz_zone); 32093650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_16K].sz_zone); 32103650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_4K].sz_zone); 3211ed940a82SPawel Jakub Dawidek } 32122d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_sync.ds_geom); 32132d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 32142d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 32153650be51SPawel Jakub Dawidek sx_destroy(&sc->sc_lock); 32162d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_geom); 32172d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 32182d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 32192d1661a5SPawel Jakub Dawidek return (NULL); 32202d1661a5SPawel Jakub Dawidek } 32212d1661a5SPawel Jakub Dawidek 32220cca572eSJohn-Mark Gurney G_RAID3_DEBUG(1, "Device %s created (%u components, id=%u).", 32230cca572eSJohn-Mark Gurney sc->sc_name, sc->sc_ndisks, sc->sc_id); 32242d1661a5SPawel Jakub Dawidek 3225853a10a5SAndrew Thompson sc->sc_rootmount = root_mount_hold("GRAID3"); 32264ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_hold %p", sc->sc_rootmount); 32274ed854e8SPawel Jakub Dawidek 32282d1661a5SPawel Jakub Dawidek /* 32292d1661a5SPawel Jakub Dawidek * Run timeout. 32302d1661a5SPawel Jakub Dawidek */ 32312d1661a5SPawel Jakub Dawidek timeout = atomic_load_acq_int(&g_raid3_timeout); 32322d1661a5SPawel Jakub Dawidek callout_reset(&sc->sc_callout, timeout * hz, g_raid3_go, sc); 32332d1661a5SPawel Jakub Dawidek return (sc->sc_geom); 32342d1661a5SPawel Jakub Dawidek } 32352d1661a5SPawel Jakub Dawidek 32362d1661a5SPawel Jakub Dawidek int 3237712fe9bdSPawel Jakub Dawidek g_raid3_destroy(struct g_raid3_softc *sc, int how) 32382d1661a5SPawel Jakub Dawidek { 32392d1661a5SPawel Jakub Dawidek struct g_provider *pp; 32402d1661a5SPawel Jakub Dawidek 32413650be51SPawel Jakub Dawidek g_topology_assert_not(); 32422d1661a5SPawel Jakub Dawidek if (sc == NULL) 32432d1661a5SPawel Jakub Dawidek return (ENXIO); 32443650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 32453650be51SPawel Jakub Dawidek 32462d1661a5SPawel Jakub Dawidek pp = sc->sc_provider; 32472d1661a5SPawel Jakub Dawidek if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 3248712fe9bdSPawel Jakub Dawidek switch (how) { 3249712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_SOFT: 32502d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 32512d1661a5SPawel Jakub Dawidek "Device %s is still open (r%dw%de%d).", pp->name, 32522d1661a5SPawel Jakub Dawidek pp->acr, pp->acw, pp->ace); 32532d1661a5SPawel Jakub Dawidek return (EBUSY); 3254712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_DELAYED: 3255712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, 3256712fe9bdSPawel Jakub Dawidek "Device %s will be destroyed on last close.", 3257712fe9bdSPawel Jakub Dawidek pp->name); 3258712fe9bdSPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 3259712fe9bdSPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 3260712fe9bdSPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROYING; 3261712fe9bdSPawel Jakub Dawidek return (EBUSY); 3262712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_HARD: 3263712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s is still open, so it " 3264712fe9bdSPawel Jakub Dawidek "can't be definitely removed.", pp->name); 3265712fe9bdSPawel Jakub Dawidek break; 32662d1661a5SPawel Jakub Dawidek } 32672d1661a5SPawel Jakub Dawidek } 32682d1661a5SPawel Jakub Dawidek 326918486a5eSPawel Jakub Dawidek g_topology_lock(); 327018486a5eSPawel Jakub Dawidek if (sc->sc_geom->softc == NULL) { 327118486a5eSPawel Jakub Dawidek g_topology_unlock(); 327218486a5eSPawel Jakub Dawidek return (0); 327318486a5eSPawel Jakub Dawidek } 327418486a5eSPawel Jakub Dawidek sc->sc_geom->softc = NULL; 327518486a5eSPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 327618486a5eSPawel Jakub Dawidek g_topology_unlock(); 327718486a5eSPawel Jakub Dawidek 32782d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 32792d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_WAIT; 32802d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 32813650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 32822d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 32832d1661a5SPawel Jakub Dawidek wakeup(sc); 32842d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 32852d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 32862d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, &sc->sc_worker); 32872d1661a5SPawel Jakub Dawidek while (sc->sc_worker != NULL) 32882d1661a5SPawel Jakub Dawidek tsleep(&sc->sc_worker, PRIBIO, "r3:destroy", hz / 5); 32892d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Woken up %p.", __func__, &sc->sc_worker); 32903650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 32912d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(sc); 32922d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 32932d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 32942d1661a5SPawel Jakub Dawidek return (0); 32952d1661a5SPawel Jakub Dawidek } 32962d1661a5SPawel Jakub Dawidek 32972d1661a5SPawel Jakub Dawidek static void 32982d1661a5SPawel Jakub Dawidek g_raid3_taste_orphan(struct g_consumer *cp) 32992d1661a5SPawel Jakub Dawidek { 33002d1661a5SPawel Jakub Dawidek 33012d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("%s called while tasting %s.", __func__, 33022d1661a5SPawel Jakub Dawidek cp->provider->name)); 33032d1661a5SPawel Jakub Dawidek } 33042d1661a5SPawel Jakub Dawidek 33052d1661a5SPawel Jakub Dawidek static struct g_geom * 33062d1661a5SPawel Jakub Dawidek g_raid3_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) 33072d1661a5SPawel Jakub Dawidek { 33082d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 33092d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 33102d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 33112d1661a5SPawel Jakub Dawidek struct g_geom *gp; 33122d1661a5SPawel Jakub Dawidek int error; 33132d1661a5SPawel Jakub Dawidek 33142d1661a5SPawel Jakub Dawidek g_topology_assert(); 33152d1661a5SPawel Jakub Dawidek g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name); 33162d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Tasting %s.", pp->name); 33172d1661a5SPawel Jakub Dawidek 33182d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "raid3:taste"); 33192d1661a5SPawel Jakub Dawidek /* This orphan function should be never called. */ 33202d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_taste_orphan; 33212d1661a5SPawel Jakub Dawidek cp = g_new_consumer(gp); 33222d1661a5SPawel Jakub Dawidek g_attach(cp, pp); 33232d1661a5SPawel Jakub Dawidek error = g_raid3_read_metadata(cp, &md); 33242d1661a5SPawel Jakub Dawidek g_detach(cp); 33252d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 33262d1661a5SPawel Jakub Dawidek g_destroy_geom(gp); 33272d1661a5SPawel Jakub Dawidek if (error != 0) 33282d1661a5SPawel Jakub Dawidek return (NULL); 33292d1661a5SPawel Jakub Dawidek gp = NULL; 33302d1661a5SPawel Jakub Dawidek 33312d1661a5SPawel Jakub Dawidek if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0) 33322d1661a5SPawel Jakub Dawidek return (NULL); 3333e6890985SPawel Jakub Dawidek if (md.md_provsize != 0 && md.md_provsize != pp->mediasize) 3334e6890985SPawel Jakub Dawidek return (NULL); 33352d1661a5SPawel Jakub Dawidek if (g_raid3_debug >= 2) 33362d1661a5SPawel Jakub Dawidek raid3_metadata_dump(&md); 33372d1661a5SPawel Jakub Dawidek 33382d1661a5SPawel Jakub Dawidek /* 33392d1661a5SPawel Jakub Dawidek * Let's check if device already exists. 33402d1661a5SPawel Jakub Dawidek */ 334145d5e85aSPawel Jakub Dawidek sc = NULL; 33422d1661a5SPawel Jakub Dawidek LIST_FOREACH(gp, &mp->geom, geom) { 33432d1661a5SPawel Jakub Dawidek sc = gp->softc; 33442d1661a5SPawel Jakub Dawidek if (sc == NULL) 33452d1661a5SPawel Jakub Dawidek continue; 33462d1661a5SPawel Jakub Dawidek if (sc->sc_sync.ds_geom == gp) 33472d1661a5SPawel Jakub Dawidek continue; 33482d1661a5SPawel Jakub Dawidek if (strcmp(md.md_name, sc->sc_name) != 0) 33492d1661a5SPawel Jakub Dawidek continue; 33502d1661a5SPawel Jakub Dawidek if (md.md_id != sc->sc_id) { 33512d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s already configured.", 33522d1661a5SPawel Jakub Dawidek sc->sc_name); 33532d1661a5SPawel Jakub Dawidek return (NULL); 33542d1661a5SPawel Jakub Dawidek } 33552d1661a5SPawel Jakub Dawidek break; 33562d1661a5SPawel Jakub Dawidek } 33572d1661a5SPawel Jakub Dawidek if (gp == NULL) { 33582d1661a5SPawel Jakub Dawidek gp = g_raid3_create(mp, &md); 33592d1661a5SPawel Jakub Dawidek if (gp == NULL) { 33602d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot create device %s.", 33612d1661a5SPawel Jakub Dawidek md.md_name); 33622d1661a5SPawel Jakub Dawidek return (NULL); 33632d1661a5SPawel Jakub Dawidek } 33642d1661a5SPawel Jakub Dawidek sc = gp->softc; 33652d1661a5SPawel Jakub Dawidek } 33662d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name); 33673650be51SPawel Jakub Dawidek g_topology_unlock(); 33683650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 33692d1661a5SPawel Jakub Dawidek error = g_raid3_add_disk(sc, pp, &md); 33702d1661a5SPawel Jakub Dawidek if (error != 0) { 33712d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot add disk %s to %s (error=%d).", 33722d1661a5SPawel Jakub Dawidek pp->name, gp->name, error); 33732d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NODISK) == 33742d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 3375712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 33763525bb6bSPawel Jakub Dawidek g_raid3_destroy(sc, G_RAID3_DESTROY_HARD); 33773650be51SPawel Jakub Dawidek g_topology_lock(); 33782d1661a5SPawel Jakub Dawidek return (NULL); 33792d1661a5SPawel Jakub Dawidek } 33803650be51SPawel Jakub Dawidek gp = NULL; 33813650be51SPawel Jakub Dawidek } 33823650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 33833650be51SPawel Jakub Dawidek g_topology_lock(); 33842d1661a5SPawel Jakub Dawidek return (gp); 33852d1661a5SPawel Jakub Dawidek } 33862d1661a5SPawel Jakub Dawidek 33872d1661a5SPawel Jakub Dawidek static int 33882d1661a5SPawel Jakub Dawidek g_raid3_destroy_geom(struct gctl_req *req __unused, struct g_class *mp __unused, 33892d1661a5SPawel Jakub Dawidek struct g_geom *gp) 33902d1661a5SPawel Jakub Dawidek { 33913650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 33923650be51SPawel Jakub Dawidek int error; 33932d1661a5SPawel Jakub Dawidek 33943650be51SPawel Jakub Dawidek g_topology_unlock(); 33953650be51SPawel Jakub Dawidek sc = gp->softc; 33963650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3397712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 33983525bb6bSPawel Jakub Dawidek error = g_raid3_destroy(gp->softc, G_RAID3_DESTROY_SOFT); 33993650be51SPawel Jakub Dawidek if (error != 0) 34003650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 34013650be51SPawel Jakub Dawidek g_topology_lock(); 34023650be51SPawel Jakub Dawidek return (error); 34032d1661a5SPawel Jakub Dawidek } 34042d1661a5SPawel Jakub Dawidek 34052d1661a5SPawel Jakub Dawidek static void 34062d1661a5SPawel Jakub Dawidek g_raid3_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 34072d1661a5SPawel Jakub Dawidek struct g_consumer *cp, struct g_provider *pp) 34082d1661a5SPawel Jakub Dawidek { 34092d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 34102d1661a5SPawel Jakub Dawidek 34112d1661a5SPawel Jakub Dawidek g_topology_assert(); 34122d1661a5SPawel Jakub Dawidek 34132d1661a5SPawel Jakub Dawidek sc = gp->softc; 34142d1661a5SPawel Jakub Dawidek if (sc == NULL) 34152d1661a5SPawel Jakub Dawidek return; 34162d1661a5SPawel Jakub Dawidek /* Skip synchronization geom. */ 34172d1661a5SPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 34182d1661a5SPawel Jakub Dawidek return; 34192d1661a5SPawel Jakub Dawidek if (pp != NULL) { 34202d1661a5SPawel Jakub Dawidek /* Nothing here. */ 34212d1661a5SPawel Jakub Dawidek } else if (cp != NULL) { 34222d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 34232d1661a5SPawel Jakub Dawidek 34242d1661a5SPawel Jakub Dawidek disk = cp->private; 34252d1661a5SPawel Jakub Dawidek if (disk == NULL) 34262d1661a5SPawel Jakub Dawidek return; 34273650be51SPawel Jakub Dawidek g_topology_unlock(); 34283650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 34292d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Type>", indent); 34302d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 34312d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "PARITY"); 34322d1661a5SPawel Jakub Dawidek else 34332d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "DATA"); 34342d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Type>\n"); 34352d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Number>%u</Number>\n", indent, 34362d1661a5SPawel Jakub Dawidek (u_int)disk->d_no); 34372d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 34382d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Synchronized>", indent); 34393650be51SPawel Jakub Dawidek if (disk->d_sync.ds_offset == 0) 34402d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "0%%"); 34412d1661a5SPawel Jakub Dawidek else { 34422d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%u%%", 34433650be51SPawel Jakub Dawidek (u_int)((disk->d_sync.ds_offset * 100) / 3444c0d68b6eSPawel Jakub Dawidek (sc->sc_mediasize / (sc->sc_ndisks - 1)))); 34452d1661a5SPawel Jakub Dawidek } 34462d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Synchronized>\n"); 34472d1661a5SPawel Jakub Dawidek } 34482d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, 34492d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid); 3450a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, disk->d_genid); 34512d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 34522d1661a5SPawel Jakub Dawidek if (disk->d_flags == 0) 34532d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 34542d1661a5SPawel Jakub Dawidek else { 34552d1661a5SPawel Jakub Dawidek int first = 1; 34562d1661a5SPawel Jakub Dawidek 34572d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 34582d1661a5SPawel Jakub Dawidek if ((disk->d_flags & (flag)) != 0) { \ 34592d1661a5SPawel Jakub Dawidek if (!first) \ 34602d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 34612d1661a5SPawel Jakub Dawidek else \ 34622d1661a5SPawel Jakub Dawidek first = 0; \ 34632d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 34642d1661a5SPawel Jakub Dawidek } \ 34652d1661a5SPawel Jakub Dawidek } while (0) 34662d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_DIRTY, "DIRTY"); 34672d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_HARDCODED, "HARDCODED"); 34682d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_SYNCHRONIZING, 34692d1661a5SPawel Jakub Dawidek "SYNCHRONIZING"); 34702d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_FORCE_SYNC, "FORCE_SYNC"); 34713aae74ecSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_BROKEN, "BROKEN"); 34722d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 34732d1661a5SPawel Jakub Dawidek } 34742d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 34752d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 34762d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state)); 34773650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 34783650be51SPawel Jakub Dawidek g_topology_lock(); 34792d1661a5SPawel Jakub Dawidek } else { 34803650be51SPawel Jakub Dawidek g_topology_unlock(); 34813650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3482ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 3483ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3484ed940a82SPawel Jakub Dawidek "%s<Zone4kRequested>%u</Zone4kRequested>\n", indent, 3485ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_requested); 3486ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3487ed940a82SPawel Jakub Dawidek "%s<Zone4kFailed>%u</Zone4kFailed>\n", indent, 3488ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_failed); 3489ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3490ed940a82SPawel Jakub Dawidek "%s<Zone16kRequested>%u</Zone16kRequested>\n", indent, 3491ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_requested); 3492ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3493ed940a82SPawel Jakub Dawidek "%s<Zone16kFailed>%u</Zone16kFailed>\n", indent, 3494ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_failed); 3495ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3496ed940a82SPawel Jakub Dawidek "%s<Zone64kRequested>%u</Zone64kRequested>\n", indent, 3497ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_requested); 3498ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3499ed940a82SPawel Jakub Dawidek "%s<Zone64kFailed>%u</Zone64kFailed>\n", indent, 3500ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_failed); 3501ed940a82SPawel Jakub Dawidek } 35022d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id); 35032d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, sc->sc_syncid); 3504a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, sc->sc_genid); 35052d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 35062d1661a5SPawel Jakub Dawidek if (sc->sc_flags == 0) 35072d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 35082d1661a5SPawel Jakub Dawidek else { 35092d1661a5SPawel Jakub Dawidek int first = 1; 35102d1661a5SPawel Jakub Dawidek 35112d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 35122d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & (flag)) != 0) { \ 35132d1661a5SPawel Jakub Dawidek if (!first) \ 35142d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 35152d1661a5SPawel Jakub Dawidek else \ 35162d1661a5SPawel Jakub Dawidek first = 0; \ 35172d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 35182d1661a5SPawel Jakub Dawidek } \ 35192d1661a5SPawel Jakub Dawidek } while (0) 3520501250baSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_NOFAILSYNC, "NOFAILSYNC"); 35212d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_NOAUTOSYNC, "NOAUTOSYNC"); 3522f5a2f7feSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_ROUND_ROBIN, 3523f5a2f7feSPawel Jakub Dawidek "ROUND-ROBIN"); 3524dba915cfSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_VERIFY, "VERIFY"); 35252d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 35262d1661a5SPawel Jakub Dawidek } 35272d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 35282d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Components>%u</Components>\n", indent, 35292d1661a5SPawel Jakub Dawidek sc->sc_ndisks); 353028b31df7SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 353128b31df7SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state)); 35323650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 35333650be51SPawel Jakub Dawidek g_topology_lock(); 35342d1661a5SPawel Jakub Dawidek } 35352d1661a5SPawel Jakub Dawidek } 35362d1661a5SPawel Jakub Dawidek 35379da3072cSPawel Jakub Dawidek static void 35383650be51SPawel Jakub Dawidek g_raid3_shutdown_pre_sync(void *arg, int howto) 35399da3072cSPawel Jakub Dawidek { 35409da3072cSPawel Jakub Dawidek struct g_class *mp; 35419da3072cSPawel Jakub Dawidek struct g_geom *gp, *gp2; 35423650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 3543712fe9bdSPawel Jakub Dawidek int error; 35449da3072cSPawel Jakub Dawidek 35459da3072cSPawel Jakub Dawidek mp = arg; 3546fdc3c6ceSPawel Jakub Dawidek DROP_GIANT(); 35479da3072cSPawel Jakub Dawidek g_topology_lock(); 35489da3072cSPawel Jakub Dawidek LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) { 35493650be51SPawel Jakub Dawidek if ((sc = gp->softc) == NULL) 35509da3072cSPawel Jakub Dawidek continue; 3551712fe9bdSPawel Jakub Dawidek /* Skip synchronization geom. */ 3552712fe9bdSPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 3553712fe9bdSPawel Jakub Dawidek continue; 35543650be51SPawel Jakub Dawidek g_topology_unlock(); 35553650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3556712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 3557712fe9bdSPawel Jakub Dawidek error = g_raid3_destroy(sc, G_RAID3_DESTROY_DELAYED); 3558712fe9bdSPawel Jakub Dawidek if (error != 0) 35593650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 35603650be51SPawel Jakub Dawidek g_topology_lock(); 35613650be51SPawel Jakub Dawidek } 35623650be51SPawel Jakub Dawidek g_topology_unlock(); 35633650be51SPawel Jakub Dawidek PICKUP_GIANT(); 35643650be51SPawel Jakub Dawidek } 35653650be51SPawel Jakub Dawidek 35663650be51SPawel Jakub Dawidek static void 35679da3072cSPawel Jakub Dawidek g_raid3_init(struct g_class *mp) 35689da3072cSPawel Jakub Dawidek { 35699da3072cSPawel Jakub Dawidek 35703650be51SPawel Jakub Dawidek g_raid3_pre_sync = EVENTHANDLER_REGISTER(shutdown_pre_sync, 35713650be51SPawel Jakub Dawidek g_raid3_shutdown_pre_sync, mp, SHUTDOWN_PRI_FIRST); 3572712fe9bdSPawel Jakub Dawidek if (g_raid3_pre_sync == NULL) 35739da3072cSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Warning! Cannot register shutdown event."); 35749da3072cSPawel Jakub Dawidek } 35759da3072cSPawel Jakub Dawidek 35769da3072cSPawel Jakub Dawidek static void 35779da3072cSPawel Jakub Dawidek g_raid3_fini(struct g_class *mp) 35789da3072cSPawel Jakub Dawidek { 35799da3072cSPawel Jakub Dawidek 35803650be51SPawel Jakub Dawidek if (g_raid3_pre_sync != NULL) 35813650be51SPawel Jakub Dawidek EVENTHANDLER_DEREGISTER(shutdown_pre_sync, g_raid3_pre_sync); 35829da3072cSPawel Jakub Dawidek } 35839da3072cSPawel Jakub Dawidek 35842d1661a5SPawel Jakub Dawidek DECLARE_GEOM_CLASS(g_raid3_class, g_raid3); 3585