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 2342d1661a5SPawel Jakub Dawidek #define g_raid3_xor(src1, src2, dst, size) \ 2352d1661a5SPawel Jakub Dawidek _g_raid3_xor((uint64_t *)(src1), (uint64_t *)(src2), \ 2362d1661a5SPawel Jakub Dawidek (uint64_t *)(dst), (size_t)size) 2372d1661a5SPawel Jakub Dawidek static void 2382d1661a5SPawel Jakub Dawidek _g_raid3_xor(uint64_t *src1, uint64_t *src2, 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) { 2432d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2442d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2452d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2462d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2472d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2482d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2492d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2502d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2512d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2522d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2532d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2542d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2552d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2562d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2572d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2582d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 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; 10522d1661a5SPawel Jakub Dawidek 10532d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 10542d1661a5SPawel Jakub Dawidek bp = NULL; 10552d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10562d1661a5SPawel Jakub Dawidek /* 10572d1661a5SPawel Jakub Dawidek * Find bio for which we should calculate data. 10582d1661a5SPawel Jakub Dawidek */ 10592d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10602d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 10612d1661a5SPawel Jakub Dawidek bp = cbp; 10622d1661a5SPawel Jakub Dawidek break; 10632d1661a5SPawel Jakub Dawidek } 10642d1661a5SPawel Jakub Dawidek } 10652d1661a5SPawel Jakub Dawidek KASSERT(bp != NULL, ("NULL parity bio.")); 10662d1661a5SPawel Jakub Dawidek } 10672d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 10682d1661a5SPawel Jakub Dawidek cadd = padd = 0; 10692d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 10702d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10712d1661a5SPawel Jakub Dawidek if (cbp == bp) 10722d1661a5SPawel Jakub Dawidek continue; 10732d1661a5SPawel Jakub Dawidek bcopy(pbp->bio_data + padd, cbp->bio_data + cadd, atom); 10742d1661a5SPawel Jakub Dawidek padd += atom; 10752d1661a5SPawel Jakub Dawidek } 10762d1661a5SPawel Jakub Dawidek cadd += atom; 10772d1661a5SPawel Jakub Dawidek } 10782d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10792d1661a5SPawel Jakub Dawidek /* 10802d1661a5SPawel Jakub Dawidek * Calculate parity. 10812d1661a5SPawel Jakub Dawidek */ 10822d1661a5SPawel Jakub Dawidek bzero(bp->bio_data, bp->bio_length); 10832d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 10842d1661a5SPawel Jakub Dawidek if (cbp == bp) 10852d1661a5SPawel Jakub Dawidek continue; 10862d1661a5SPawel Jakub Dawidek g_raid3_xor(cbp->bio_data, bp->bio_data, bp->bio_data, 10872d1661a5SPawel Jakub Dawidek bp->bio_length); 10882d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_NODISK) != 0) 10892d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 10902d1661a5SPawel Jakub Dawidek } 10912d1661a5SPawel Jakub Dawidek } 1092ee40c7aaSPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 10932d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 10942d1661a5SPawel Jakub Dawidek 10952d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 10962d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 10972d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 10982d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 10993650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 1100d97d5ee9SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 1101d97d5ee9SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 110279e61493SPawel Jakub Dawidek cp->index++; 11030962f942SPawel Jakub Dawidek sc->sc_writes++; 11042d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 11052d1661a5SPawel Jakub Dawidek } 11062d1661a5SPawel Jakub Dawidek } 11072d1661a5SPawel Jakub Dawidek 11082d1661a5SPawel Jakub Dawidek static void 11092d1661a5SPawel Jakub Dawidek g_raid3_gather(struct bio *pbp) 11102d1661a5SPawel Jakub Dawidek { 11112d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 11122d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1113f5a2f7feSPawel Jakub Dawidek struct bio *xbp, *fbp, *cbp; 11142d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 11152d1661a5SPawel Jakub Dawidek 11162d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 11172d1661a5SPawel Jakub Dawidek /* 1118f5a2f7feSPawel Jakub Dawidek * Find bio for which we have to calculate data. 11192d1661a5SPawel Jakub Dawidek * While going through this path, check if all requests 11202d1661a5SPawel Jakub Dawidek * succeeded, if not, deny whole request. 1121f5a2f7feSPawel Jakub Dawidek * If we're in COMPLETE mode, we allow one request to fail, 1122f5a2f7feSPawel Jakub Dawidek * so if we find one, we're sending it to the parity consumer. 1123f5a2f7feSPawel Jakub Dawidek * If there are more failed requests, we deny whole request. 11242d1661a5SPawel Jakub Dawidek */ 1125f5a2f7feSPawel Jakub Dawidek xbp = fbp = NULL; 11262d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 11272d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 1128f5a2f7feSPawel Jakub Dawidek KASSERT(xbp == NULL, ("More than one parity bio.")); 1129f5a2f7feSPawel Jakub Dawidek xbp = cbp; 11302d1661a5SPawel Jakub Dawidek } 11312d1661a5SPawel Jakub Dawidek if (cbp->bio_error == 0) 11322d1661a5SPawel Jakub Dawidek continue; 11332d1661a5SPawel Jakub Dawidek /* 11342d1661a5SPawel Jakub Dawidek * Found failed request. 11352d1661a5SPawel Jakub Dawidek */ 1136f5a2f7feSPawel Jakub Dawidek if (fbp == NULL) { 1137f5a2f7feSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_DEGRADED) != 0) { 11382d1661a5SPawel Jakub Dawidek /* 1139f5a2f7feSPawel Jakub Dawidek * We are already in degraded mode, so we can't 1140f5a2f7feSPawel Jakub Dawidek * accept any failures. 11412d1661a5SPawel Jakub Dawidek */ 1142f5a2f7feSPawel Jakub Dawidek if (pbp->bio_error == 0) 114317fec17eSPawel Jakub Dawidek pbp->bio_error = cbp->bio_error; 11442d1661a5SPawel Jakub Dawidek } else { 1145f5a2f7feSPawel Jakub Dawidek fbp = cbp; 11462d1661a5SPawel Jakub Dawidek } 1147f5a2f7feSPawel Jakub Dawidek } else { 11482d1661a5SPawel Jakub Dawidek /* 11492d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 11502d1661a5SPawel Jakub Dawidek */ 11512d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 1152f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11532d1661a5SPawel Jakub Dawidek } 11543aae74ecSPawel Jakub Dawidek disk = cbp->bio_caller2; 11553aae74ecSPawel Jakub Dawidek if (disk == NULL) 11563aae74ecSPawel Jakub Dawidek continue; 11573aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 11583aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 11593aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, "Request failed (error=%d).", 11603aae74ecSPawel Jakub Dawidek cbp->bio_error); 11613aae74ecSPawel Jakub Dawidek } else { 11623aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(1, cbp, "Request failed (error=%d).", 11633aae74ecSPawel Jakub Dawidek cbp->bio_error); 11643aae74ecSPawel Jakub Dawidek } 11653aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 11663aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 11673aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 11683aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 11693aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 11703aae74ecSPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 11713aae74ecSPawel Jakub Dawidek } 11722d1661a5SPawel Jakub Dawidek } 11732d1661a5SPawel Jakub Dawidek if (pbp->bio_error != 0) 11742d1661a5SPawel Jakub Dawidek goto finish; 1175dba915cfSPawel Jakub Dawidek if (fbp != NULL && (pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1176dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_VERIFY; 1177dba915cfSPawel Jakub Dawidek if (xbp != fbp) 1178dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(xbp, fbp); 1179dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, fbp); 1180dba915cfSPawel Jakub Dawidek } else if (fbp != NULL) { 11812d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 11822d1661a5SPawel Jakub Dawidek 11832d1661a5SPawel Jakub Dawidek /* 11842d1661a5SPawel Jakub Dawidek * One request failed, so send the same request to 11852d1661a5SPawel Jakub Dawidek * the parity consumer. 11862d1661a5SPawel Jakub Dawidek */ 1187f5a2f7feSPawel Jakub Dawidek disk = pbp->bio_driver2; 11882d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 1189f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11902d1661a5SPawel Jakub Dawidek goto finish; 11912d1661a5SPawel Jakub Dawidek } 11922d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 11932d1661a5SPawel Jakub Dawidek pbp->bio_inbed--; 1194f5a2f7feSPawel Jakub Dawidek fbp->bio_flags &= ~(BIO_DONE | BIO_ERROR); 1195f5a2f7feSPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 1196f5a2f7feSPawel Jakub Dawidek fbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1197f5a2f7feSPawel Jakub Dawidek fbp->bio_error = 0; 1198f5a2f7feSPawel Jakub Dawidek fbp->bio_completed = 0; 1199f5a2f7feSPawel Jakub Dawidek fbp->bio_children = 0; 1200f5a2f7feSPawel Jakub Dawidek fbp->bio_inbed = 0; 12012d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 1202f5a2f7feSPawel Jakub Dawidek fbp->bio_caller2 = disk; 1203f5a2f7feSPawel Jakub Dawidek fbp->bio_to = cp->provider; 1204f5a2f7feSPawel Jakub Dawidek G_RAID3_LOGREQ(3, fbp, "Sending request (recover)."); 12053650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 12062d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 12072d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 120879e61493SPawel Jakub Dawidek cp->index++; 1209f5a2f7feSPawel Jakub Dawidek g_io_request(fbp, cp); 12102d1661a5SPawel Jakub Dawidek return; 12112d1661a5SPawel Jakub Dawidek } 1212f5a2f7feSPawel Jakub Dawidek if (xbp != NULL) { 1213f5a2f7feSPawel Jakub Dawidek /* 1214f5a2f7feSPawel Jakub Dawidek * Calculate parity. 1215f5a2f7feSPawel Jakub Dawidek */ 1216f5a2f7feSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 1217f5a2f7feSPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) 1218f5a2f7feSPawel Jakub Dawidek continue; 1219f5a2f7feSPawel Jakub Dawidek g_raid3_xor(cbp->bio_data, xbp->bio_data, xbp->bio_data, 1220f5a2f7feSPawel Jakub Dawidek xbp->bio_length); 1221f5a2f7feSPawel Jakub Dawidek } 1222f5a2f7feSPawel Jakub Dawidek xbp->bio_cflags &= ~G_RAID3_BIO_CFLAG_PARITY; 1223dba915cfSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1224dba915cfSPawel Jakub Dawidek if (!g_raid3_is_zero(xbp)) { 1225dba915cfSPawel Jakub Dawidek g_raid3_parity_mismatch++; 1226dba915cfSPawel Jakub Dawidek pbp->bio_error = EIO; 1227dba915cfSPawel Jakub Dawidek goto finish; 1228dba915cfSPawel Jakub Dawidek } 1229dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, xbp); 1230dba915cfSPawel Jakub Dawidek } 12312d1661a5SPawel Jakub Dawidek } 12322d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 12332d1661a5SPawel Jakub Dawidek cadd = padd = 0; 12342d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 12352d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 12362d1661a5SPawel Jakub Dawidek bcopy(cbp->bio_data + cadd, pbp->bio_data + padd, atom); 12372d1661a5SPawel Jakub Dawidek pbp->bio_completed += atom; 12382d1661a5SPawel Jakub Dawidek padd += atom; 12392d1661a5SPawel Jakub Dawidek } 12402d1661a5SPawel Jakub Dawidek cadd += atom; 12412d1661a5SPawel Jakub Dawidek } 12422d1661a5SPawel Jakub Dawidek finish: 12432d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 12442d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 12454cf67afeSPawel Jakub Dawidek else { 12464cf67afeSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) 12474cf67afeSPawel Jakub Dawidek G_RAID3_LOGREQ(1, pbp, "Verification error."); 12482d1661a5SPawel Jakub Dawidek else 12492d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 12504cf67afeSPawel Jakub Dawidek } 1251dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_MASK; 12522d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 12532d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 1254290c6161SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 12552d1661a5SPawel Jakub Dawidek } 12562d1661a5SPawel Jakub Dawidek 12572d1661a5SPawel Jakub Dawidek static void 12582d1661a5SPawel Jakub Dawidek g_raid3_done(struct bio *bp) 12592d1661a5SPawel Jakub Dawidek { 12602d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12612d1661a5SPawel Jakub Dawidek 12622d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 12632d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_REGULAR; 12642d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Regular request done (error=%d).", bp->bio_error); 12652d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 12662d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 12672d1661a5SPawel Jakub Dawidek wakeup(sc); 12682d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 12692d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 12702d1661a5SPawel Jakub Dawidek } 12712d1661a5SPawel Jakub Dawidek 12722d1661a5SPawel Jakub Dawidek static void 12732d1661a5SPawel Jakub Dawidek g_raid3_regular_request(struct bio *cbp) 12742d1661a5SPawel Jakub Dawidek { 12752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12762d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 12772d1661a5SPawel Jakub Dawidek struct bio *pbp; 12782d1661a5SPawel Jakub Dawidek 12792d1661a5SPawel Jakub Dawidek g_topology_assert_not(); 12802d1661a5SPawel Jakub Dawidek 12812d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 12822d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 12830962f942SPawel Jakub Dawidek cbp->bio_from->index--; 12840962f942SPawel Jakub Dawidek if (cbp->bio_cmd == BIO_WRITE) 12850962f942SPawel Jakub Dawidek sc->sc_writes--; 12862d1661a5SPawel Jakub Dawidek disk = cbp->bio_from->private; 12872d1661a5SPawel Jakub Dawidek if (disk == NULL) { 12882d1661a5SPawel Jakub Dawidek g_topology_lock(); 12892d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cbp->bio_from); 12902d1661a5SPawel Jakub Dawidek g_topology_unlock(); 12912d1661a5SPawel Jakub Dawidek } 12922d1661a5SPawel Jakub Dawidek 12932d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Request finished."); 12942d1661a5SPawel Jakub Dawidek pbp->bio_inbed++; 12952d1661a5SPawel Jakub Dawidek KASSERT(pbp->bio_inbed <= pbp->bio_children, 12962d1661a5SPawel Jakub Dawidek ("bio_inbed (%u) is bigger than bio_children (%u).", pbp->bio_inbed, 12972d1661a5SPawel Jakub Dawidek pbp->bio_children)); 12982d1661a5SPawel Jakub Dawidek if (pbp->bio_inbed != pbp->bio_children) 12992d1661a5SPawel Jakub Dawidek return; 13002d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 13012d1661a5SPawel Jakub Dawidek case BIO_READ: 13022d1661a5SPawel Jakub Dawidek g_raid3_gather(pbp); 13032d1661a5SPawel Jakub Dawidek break; 13042d1661a5SPawel Jakub Dawidek case BIO_WRITE: 13052d1661a5SPawel Jakub Dawidek case BIO_DELETE: 13062d1661a5SPawel Jakub Dawidek { 13072d1661a5SPawel Jakub Dawidek int error = 0; 13082d1661a5SPawel Jakub Dawidek 13092d1661a5SPawel Jakub Dawidek pbp->bio_completed = pbp->bio_length; 13102d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) { 13113aae74ecSPawel Jakub Dawidek if (cbp->bio_error == 0) { 13123aae74ecSPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13133aae74ecSPawel Jakub Dawidek continue; 13142d1661a5SPawel Jakub Dawidek } 13153aae74ecSPawel Jakub Dawidek 13162d1661a5SPawel Jakub Dawidek if (error == 0) 13172d1661a5SPawel Jakub Dawidek error = cbp->bio_error; 13182d1661a5SPawel Jakub Dawidek else if (pbp->bio_error == 0) { 13192d1661a5SPawel Jakub Dawidek /* 13202d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 13212d1661a5SPawel Jakub Dawidek */ 13222d1661a5SPawel Jakub Dawidek pbp->bio_error = error; 13232d1661a5SPawel Jakub Dawidek } 13243aae74ecSPawel Jakub Dawidek 13253aae74ecSPawel Jakub Dawidek disk = cbp->bio_caller2; 13263aae74ecSPawel Jakub Dawidek if (disk == NULL) { 13273aae74ecSPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13283aae74ecSPawel Jakub Dawidek continue; 13293aae74ecSPawel Jakub Dawidek } 13303aae74ecSPawel Jakub Dawidek 13313aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 13323aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 13333aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, 13343aae74ecSPawel Jakub Dawidek "Request failed (error=%d).", 13353aae74ecSPawel Jakub Dawidek cbp->bio_error); 13363aae74ecSPawel Jakub Dawidek } else { 13373aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(1, cbp, 13383aae74ecSPawel Jakub Dawidek "Request failed (error=%d).", 13393aae74ecSPawel Jakub Dawidek cbp->bio_error); 13403aae74ecSPawel Jakub Dawidek } 13413aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 13423aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 13433aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 13443aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 13453aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 13463aae74ecSPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 13472d1661a5SPawel Jakub Dawidek } 13482d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13492d1661a5SPawel Jakub Dawidek } 13502d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 13512d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 13522d1661a5SPawel Jakub Dawidek else 13532d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 13542d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_DEGRADED; 13552d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_NOPARITY; 13563650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_inflight, pbp); 13573650be51SPawel Jakub Dawidek /* Release delayed sync requests if possible. */ 13583650be51SPawel Jakub Dawidek g_raid3_sync_release(sc); 13592d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 13602d1661a5SPawel Jakub Dawidek break; 13612d1661a5SPawel Jakub Dawidek } 13622d1661a5SPawel Jakub Dawidek } 13632d1661a5SPawel Jakub Dawidek } 13642d1661a5SPawel Jakub Dawidek 13652d1661a5SPawel Jakub Dawidek static void 13662d1661a5SPawel Jakub Dawidek g_raid3_sync_done(struct bio *bp) 13672d1661a5SPawel Jakub Dawidek { 13682d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 13692d1661a5SPawel Jakub Dawidek 13702d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request delivered."); 13712d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 13722d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_SYNC; 13732d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 13742d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 13752d1661a5SPawel Jakub Dawidek wakeup(sc); 13762d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 13772d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 13782d1661a5SPawel Jakub Dawidek } 13792d1661a5SPawel Jakub Dawidek 13802d1661a5SPawel Jakub Dawidek static void 138142461fbaSPawel Jakub Dawidek g_raid3_flush(struct g_raid3_softc *sc, struct bio *bp) 138242461fbaSPawel Jakub Dawidek { 138342461fbaSPawel Jakub Dawidek struct bio_queue_head queue; 138442461fbaSPawel Jakub Dawidek struct g_raid3_disk *disk; 138542461fbaSPawel Jakub Dawidek struct g_consumer *cp; 138642461fbaSPawel Jakub Dawidek struct bio *cbp; 138742461fbaSPawel Jakub Dawidek u_int i; 138842461fbaSPawel Jakub Dawidek 138942461fbaSPawel Jakub Dawidek bioq_init(&queue); 139042461fbaSPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 139142461fbaSPawel Jakub Dawidek disk = &sc->sc_disks[i]; 139242461fbaSPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 139342461fbaSPawel Jakub Dawidek continue; 139442461fbaSPawel Jakub Dawidek cbp = g_clone_bio(bp); 139542461fbaSPawel Jakub Dawidek if (cbp == NULL) { 139642461fbaSPawel Jakub Dawidek for (cbp = bioq_first(&queue); cbp != NULL; 139742461fbaSPawel Jakub Dawidek cbp = bioq_first(&queue)) { 139842461fbaSPawel Jakub Dawidek bioq_remove(&queue, cbp); 139942461fbaSPawel Jakub Dawidek g_destroy_bio(cbp); 140042461fbaSPawel Jakub Dawidek } 140142461fbaSPawel Jakub Dawidek if (bp->bio_error == 0) 140242461fbaSPawel Jakub Dawidek bp->bio_error = ENOMEM; 140342461fbaSPawel Jakub Dawidek g_io_deliver(bp, bp->bio_error); 140442461fbaSPawel Jakub Dawidek return; 140542461fbaSPawel Jakub Dawidek } 140642461fbaSPawel Jakub Dawidek bioq_insert_tail(&queue, cbp); 140742461fbaSPawel Jakub Dawidek cbp->bio_done = g_std_done; 140842461fbaSPawel Jakub Dawidek cbp->bio_caller1 = disk; 140942461fbaSPawel Jakub Dawidek cbp->bio_to = disk->d_consumer->provider; 141042461fbaSPawel Jakub Dawidek } 141142461fbaSPawel Jakub Dawidek for (cbp = bioq_first(&queue); cbp != NULL; cbp = bioq_first(&queue)) { 141242461fbaSPawel Jakub Dawidek bioq_remove(&queue, cbp); 141342461fbaSPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 141442461fbaSPawel Jakub Dawidek disk = cbp->bio_caller1; 141542461fbaSPawel Jakub Dawidek cbp->bio_caller1 = NULL; 141642461fbaSPawel Jakub Dawidek cp = disk->d_consumer; 141742461fbaSPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 141842461fbaSPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 141942461fbaSPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 142042461fbaSPawel Jakub Dawidek g_io_request(cbp, disk->d_consumer); 142142461fbaSPawel Jakub Dawidek } 142242461fbaSPawel Jakub Dawidek } 142342461fbaSPawel Jakub Dawidek 142442461fbaSPawel Jakub Dawidek static void 14252d1661a5SPawel Jakub Dawidek g_raid3_start(struct bio *bp) 14262d1661a5SPawel Jakub Dawidek { 14272d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 14282d1661a5SPawel Jakub Dawidek 14292d1661a5SPawel Jakub Dawidek sc = bp->bio_to->geom->softc; 14302d1661a5SPawel Jakub Dawidek /* 14312d1661a5SPawel Jakub Dawidek * If sc == NULL or there are no valid disks, provider's error 14322d1661a5SPawel Jakub Dawidek * should be set and g_raid3_start() should not be called at all. 14332d1661a5SPawel Jakub Dawidek */ 14342d1661a5SPawel Jakub Dawidek KASSERT(sc != NULL && (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 14352d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE), 14362d1661a5SPawel Jakub Dawidek ("Provider's error should be set (error=%d)(device=%s).", 14372d1661a5SPawel Jakub Dawidek bp->bio_to->error, bp->bio_to->name)); 14382d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Request received."); 14392d1661a5SPawel Jakub Dawidek 14402d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 14412d1661a5SPawel Jakub Dawidek case BIO_READ: 14422d1661a5SPawel Jakub Dawidek case BIO_WRITE: 14432d1661a5SPawel Jakub Dawidek case BIO_DELETE: 14442d1661a5SPawel Jakub Dawidek break; 144542461fbaSPawel Jakub Dawidek case BIO_FLUSH: 144642461fbaSPawel Jakub Dawidek g_raid3_flush(sc, bp); 144742461fbaSPawel Jakub Dawidek return; 14482d1661a5SPawel Jakub Dawidek case BIO_GETATTR: 14492d1661a5SPawel Jakub Dawidek default: 14502d1661a5SPawel Jakub Dawidek g_io_deliver(bp, EOPNOTSUPP); 14512d1661a5SPawel Jakub Dawidek return; 14522d1661a5SPawel Jakub Dawidek } 14532d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 14542d1661a5SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_queue, bp); 14552d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 14562d1661a5SPawel Jakub Dawidek wakeup(sc); 14572d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 14582d1661a5SPawel Jakub Dawidek } 14592d1661a5SPawel Jakub Dawidek 14602d1661a5SPawel Jakub Dawidek /* 14613650be51SPawel Jakub Dawidek * Return TRUE if the given request is colliding with a in-progress 14623650be51SPawel Jakub Dawidek * synchronization request. 14632d1661a5SPawel Jakub Dawidek */ 14643650be51SPawel Jakub Dawidek static int 14653650be51SPawel Jakub Dawidek g_raid3_sync_collision(struct g_raid3_softc *sc, struct bio *bp) 14662d1661a5SPawel Jakub Dawidek { 14672d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 14683650be51SPawel Jakub Dawidek struct bio *sbp; 14693650be51SPawel Jakub Dawidek off_t rstart, rend, sstart, send; 14703650be51SPawel Jakub Dawidek int i; 14713650be51SPawel Jakub Dawidek 14723650be51SPawel Jakub Dawidek disk = sc->sc_syncdisk; 14733650be51SPawel Jakub Dawidek if (disk == NULL) 14743650be51SPawel Jakub Dawidek return (0); 14753650be51SPawel Jakub Dawidek rstart = bp->bio_offset; 14763650be51SPawel Jakub Dawidek rend = bp->bio_offset + bp->bio_length; 14773650be51SPawel Jakub Dawidek for (i = 0; i < g_raid3_syncreqs; i++) { 14783650be51SPawel Jakub Dawidek sbp = disk->d_sync.ds_bios[i]; 14793650be51SPawel Jakub Dawidek if (sbp == NULL) 14803650be51SPawel Jakub Dawidek continue; 14813650be51SPawel Jakub Dawidek sstart = sbp->bio_offset; 14823650be51SPawel Jakub Dawidek send = sbp->bio_length; 14833650be51SPawel Jakub Dawidek if (sbp->bio_cmd == BIO_WRITE) { 14843650be51SPawel Jakub Dawidek sstart *= sc->sc_ndisks - 1; 14853650be51SPawel Jakub Dawidek send *= sc->sc_ndisks - 1; 14863650be51SPawel Jakub Dawidek } 14873650be51SPawel Jakub Dawidek send += sstart; 14883650be51SPawel Jakub Dawidek if (rend > sstart && rstart < send) 14893650be51SPawel Jakub Dawidek return (1); 14903650be51SPawel Jakub Dawidek } 14913650be51SPawel Jakub Dawidek return (0); 14923650be51SPawel Jakub Dawidek } 14933650be51SPawel Jakub Dawidek 14943650be51SPawel Jakub Dawidek /* 14953650be51SPawel Jakub Dawidek * Return TRUE if the given sync request is colliding with a in-progress regular 14963650be51SPawel Jakub Dawidek * request. 14973650be51SPawel Jakub Dawidek */ 14983650be51SPawel Jakub Dawidek static int 14993650be51SPawel Jakub Dawidek g_raid3_regular_collision(struct g_raid3_softc *sc, struct bio *sbp) 15003650be51SPawel Jakub Dawidek { 15013650be51SPawel Jakub Dawidek off_t rstart, rend, sstart, send; 15022d1661a5SPawel Jakub Dawidek struct bio *bp; 15032d1661a5SPawel Jakub Dawidek 15043650be51SPawel Jakub Dawidek if (sc->sc_syncdisk == NULL) 15053650be51SPawel Jakub Dawidek return (0); 15063650be51SPawel Jakub Dawidek sstart = sbp->bio_offset; 15073650be51SPawel Jakub Dawidek send = sstart + sbp->bio_length; 15083650be51SPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_inflight.queue, bio_queue) { 15093650be51SPawel Jakub Dawidek rstart = bp->bio_offset; 15103650be51SPawel Jakub Dawidek rend = bp->bio_offset + bp->bio_length; 15113650be51SPawel Jakub Dawidek if (rend > sstart && rstart < send) 15123650be51SPawel Jakub Dawidek return (1); 15132d1661a5SPawel Jakub Dawidek } 15143650be51SPawel Jakub Dawidek return (0); 15152d1661a5SPawel Jakub Dawidek } 15162d1661a5SPawel Jakub Dawidek 15173650be51SPawel Jakub Dawidek /* 15183650be51SPawel Jakub Dawidek * Puts request onto delayed queue. 15193650be51SPawel Jakub Dawidek */ 15203650be51SPawel Jakub Dawidek static void 15213650be51SPawel Jakub Dawidek g_raid3_regular_delay(struct g_raid3_softc *sc, struct bio *bp) 15223650be51SPawel Jakub Dawidek { 15233650be51SPawel Jakub Dawidek 15243650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Delaying request."); 15253650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_regular_delayed, bp); 15263650be51SPawel Jakub Dawidek } 15273650be51SPawel Jakub Dawidek 15283650be51SPawel Jakub Dawidek /* 15293650be51SPawel Jakub Dawidek * Puts synchronization request onto delayed queue. 15303650be51SPawel Jakub Dawidek */ 15313650be51SPawel Jakub Dawidek static void 15323650be51SPawel Jakub Dawidek g_raid3_sync_delay(struct g_raid3_softc *sc, struct bio *bp) 15333650be51SPawel Jakub Dawidek { 15343650be51SPawel Jakub Dawidek 15353650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Delaying synchronization request."); 15363650be51SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_sync_delayed, bp); 15373650be51SPawel Jakub Dawidek } 15383650be51SPawel Jakub Dawidek 15393650be51SPawel Jakub Dawidek /* 15403650be51SPawel Jakub Dawidek * Releases delayed regular requests which don't collide anymore with sync 15413650be51SPawel Jakub Dawidek * requests. 15423650be51SPawel Jakub Dawidek */ 15433650be51SPawel Jakub Dawidek static void 15443650be51SPawel Jakub Dawidek g_raid3_regular_release(struct g_raid3_softc *sc) 15453650be51SPawel Jakub Dawidek { 15463650be51SPawel Jakub Dawidek struct bio *bp, *bp2; 15473650be51SPawel Jakub Dawidek 15483650be51SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(bp, &sc->sc_regular_delayed.queue, bio_queue, bp2) { 15493650be51SPawel Jakub Dawidek if (g_raid3_sync_collision(sc, bp)) 15503650be51SPawel Jakub Dawidek continue; 15513650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_regular_delayed, bp); 15523650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Releasing delayed request (%p).", bp); 15533650be51SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 15543650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 15553650be51SPawel Jakub Dawidek #if 0 15563650be51SPawel Jakub Dawidek /* 15573650be51SPawel Jakub Dawidek * wakeup() is not needed, because this function is called from 15583650be51SPawel Jakub Dawidek * the worker thread. 15593650be51SPawel Jakub Dawidek */ 15603650be51SPawel Jakub Dawidek wakeup(&sc->sc_queue); 15613650be51SPawel Jakub Dawidek #endif 15623650be51SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 15633650be51SPawel Jakub Dawidek } 15643650be51SPawel Jakub Dawidek } 15653650be51SPawel Jakub Dawidek 15663650be51SPawel Jakub Dawidek /* 15673650be51SPawel Jakub Dawidek * Releases delayed sync requests which don't collide anymore with regular 15683650be51SPawel Jakub Dawidek * requests. 15693650be51SPawel Jakub Dawidek */ 15703650be51SPawel Jakub Dawidek static void 15713650be51SPawel Jakub Dawidek g_raid3_sync_release(struct g_raid3_softc *sc) 15723650be51SPawel Jakub Dawidek { 15733650be51SPawel Jakub Dawidek struct bio *bp, *bp2; 15743650be51SPawel Jakub Dawidek 15753650be51SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(bp, &sc->sc_sync_delayed.queue, bio_queue, bp2) { 15763650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 15773650be51SPawel Jakub Dawidek continue; 15783650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_sync_delayed, bp); 15793650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, 15803650be51SPawel Jakub Dawidek "Releasing delayed synchronization request."); 15813650be51SPawel Jakub Dawidek g_io_request(bp, bp->bio_from); 15823650be51SPawel Jakub Dawidek } 15833650be51SPawel Jakub Dawidek } 15843650be51SPawel Jakub Dawidek 15853650be51SPawel Jakub Dawidek /* 15863650be51SPawel Jakub Dawidek * Handle synchronization requests. 15873650be51SPawel Jakub Dawidek * Every synchronization request is two-steps process: first, READ request is 15883650be51SPawel Jakub Dawidek * send to active provider and then WRITE request (with read data) to the provider 15893650be51SPawel Jakub Dawidek * beeing synchronized. When WRITE is finished, new synchronization request is 15903650be51SPawel Jakub Dawidek * send. 15913650be51SPawel Jakub Dawidek */ 15922d1661a5SPawel Jakub Dawidek static void 15932d1661a5SPawel Jakub Dawidek g_raid3_sync_request(struct bio *bp) 15942d1661a5SPawel Jakub Dawidek { 15952d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 15962d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 15972d1661a5SPawel Jakub Dawidek 159879e61493SPawel Jakub Dawidek bp->bio_from->index--; 15992d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 16002d1661a5SPawel Jakub Dawidek disk = bp->bio_from->private; 16012d1661a5SPawel Jakub Dawidek if (disk == NULL) { 16023650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); /* Avoid recursion on sc_lock. */ 16032d1661a5SPawel Jakub Dawidek g_topology_lock(); 16042d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, bp->bio_from); 16052d1661a5SPawel Jakub Dawidek g_topology_unlock(); 16063650be51SPawel Jakub Dawidek free(bp->bio_data, M_RAID3); 16072d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 16083650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 16092d1661a5SPawel Jakub Dawidek return; 16102d1661a5SPawel Jakub Dawidek } 16112d1661a5SPawel Jakub Dawidek 16122d1661a5SPawel Jakub Dawidek /* 16132d1661a5SPawel Jakub Dawidek * Synchronization request. 16142d1661a5SPawel Jakub Dawidek */ 16152d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 16162d1661a5SPawel Jakub Dawidek case BIO_READ: 16172d1661a5SPawel Jakub Dawidek { 16182d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 16192d1661a5SPawel Jakub Dawidek u_char *dst, *src; 16202d1661a5SPawel Jakub Dawidek off_t left; 16212d1661a5SPawel Jakub Dawidek u_int atom; 16222d1661a5SPawel Jakub Dawidek 16232d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 16242d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 16252d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 16262d1661a5SPawel Jakub Dawidek bp->bio_error); 16272d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 16282d1661a5SPawel Jakub Dawidek return; 16292d1661a5SPawel Jakub Dawidek } 16302d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 16312d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 16322d1661a5SPawel Jakub Dawidek dst = src = bp->bio_data; 16332d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) { 16342d1661a5SPawel Jakub Dawidek u_int n; 16352d1661a5SPawel Jakub Dawidek 16362d1661a5SPawel Jakub Dawidek /* Parity component. */ 16372d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 16382d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 16392d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 16402d1661a5SPawel Jakub Dawidek src += atom; 16412d1661a5SPawel Jakub Dawidek for (n = 1; n < sc->sc_ndisks - 1; n++) { 16422d1661a5SPawel Jakub Dawidek g_raid3_xor(src, dst, dst, atom); 16432d1661a5SPawel Jakub Dawidek src += atom; 16442d1661a5SPawel Jakub Dawidek } 16452d1661a5SPawel Jakub Dawidek dst += atom; 16462d1661a5SPawel Jakub Dawidek } 16472d1661a5SPawel Jakub Dawidek } else { 16482d1661a5SPawel Jakub Dawidek /* Regular component. */ 16492d1661a5SPawel Jakub Dawidek src += atom * disk->d_no; 16502d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 16512d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 16522d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 16532d1661a5SPawel Jakub Dawidek src += sc->sc_sectorsize; 16542d1661a5SPawel Jakub Dawidek dst += atom; 16552d1661a5SPawel Jakub Dawidek } 16562d1661a5SPawel Jakub Dawidek } 16573650be51SPawel Jakub Dawidek bp->bio_driver1 = bp->bio_driver2 = NULL; 16583650be51SPawel Jakub Dawidek bp->bio_pflags = 0; 16592d1661a5SPawel Jakub Dawidek bp->bio_offset /= sc->sc_ndisks - 1; 16602d1661a5SPawel Jakub Dawidek bp->bio_length /= sc->sc_ndisks - 1; 16612d1661a5SPawel Jakub Dawidek bp->bio_cmd = BIO_WRITE; 16622d1661a5SPawel Jakub Dawidek bp->bio_cflags = 0; 16632d1661a5SPawel Jakub Dawidek bp->bio_children = bp->bio_inbed = 0; 16642d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 16653650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 16662d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 16672d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 166879e61493SPawel Jakub Dawidek cp->index++; 16692d1661a5SPawel Jakub Dawidek g_io_request(bp, cp); 16702d1661a5SPawel Jakub Dawidek return; 16712d1661a5SPawel Jakub Dawidek } 16722d1661a5SPawel Jakub Dawidek case BIO_WRITE: 1673d2fb9c62SPawel Jakub Dawidek { 1674d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 16753650be51SPawel Jakub Dawidek off_t boffset, moffset; 16763650be51SPawel Jakub Dawidek void *data; 16773650be51SPawel Jakub Dawidek int i; 1678d2fb9c62SPawel Jakub Dawidek 16792d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 16802d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 16812d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 16822d1661a5SPawel Jakub Dawidek bp->bio_error); 16832d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 1684ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 16852d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 16862d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 16872d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 16882d1661a5SPawel Jakub Dawidek return; 16892d1661a5SPawel Jakub Dawidek } 16902d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 1691d2fb9c62SPawel Jakub Dawidek sync = &disk->d_sync; 16923650be51SPawel Jakub Dawidek if (sync->ds_offset == sc->sc_mediasize / (sc->sc_ndisks - 1) || 16933650be51SPawel Jakub Dawidek sync->ds_consumer == NULL || 16943650be51SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 16953650be51SPawel Jakub Dawidek /* Don't send more synchronization requests. */ 16963650be51SPawel Jakub Dawidek sync->ds_inflight--; 16973650be51SPawel Jakub Dawidek if (sync->ds_bios != NULL) { 1698ef25813dSRuslan Ermilov i = (int)(uintptr_t)bp->bio_caller1; 16993650be51SPawel Jakub Dawidek sync->ds_bios[i] = NULL; 17003650be51SPawel Jakub Dawidek } 17013650be51SPawel Jakub Dawidek free(bp->bio_data, M_RAID3); 17022d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 17033650be51SPawel Jakub Dawidek if (sync->ds_inflight > 0) 1704d2fb9c62SPawel Jakub Dawidek return; 17053650be51SPawel Jakub Dawidek if (sync->ds_consumer == NULL || 17063650be51SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 17073650be51SPawel Jakub Dawidek return; 17083650be51SPawel Jakub Dawidek } 17092d1661a5SPawel Jakub Dawidek /* 17102d1661a5SPawel Jakub Dawidek * Disk up-to-date, activate it. 17112d1661a5SPawel Jakub Dawidek */ 17122d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_ACTIVE, 17132d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 17142d1661a5SPawel Jakub Dawidek return; 17153650be51SPawel Jakub Dawidek } 17163650be51SPawel Jakub Dawidek 17173650be51SPawel Jakub Dawidek /* Send next synchronization request. */ 17183650be51SPawel Jakub Dawidek data = bp->bio_data; 17193650be51SPawel Jakub Dawidek bzero(bp, sizeof(*bp)); 17203650be51SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 17213650be51SPawel Jakub Dawidek bp->bio_offset = sync->ds_offset * (sc->sc_ndisks - 1); 17223650be51SPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 17233650be51SPawel Jakub Dawidek sync->ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 17243650be51SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 17253650be51SPawel Jakub Dawidek bp->bio_data = data; 17263650be51SPawel Jakub Dawidek bp->bio_from = sync->ds_consumer; 17273650be51SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 17283650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 17293650be51SPawel Jakub Dawidek sync->ds_consumer->index++; 17302d1661a5SPawel Jakub Dawidek /* 17313650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a regular request. 17322d1661a5SPawel Jakub Dawidek */ 17333650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 17343650be51SPawel Jakub Dawidek g_raid3_sync_delay(sc, bp); 17353650be51SPawel Jakub Dawidek else 17363650be51SPawel Jakub Dawidek g_io_request(bp, sync->ds_consumer); 17373650be51SPawel Jakub Dawidek 17383650be51SPawel Jakub Dawidek /* Release delayed requests if possible. */ 17393650be51SPawel Jakub Dawidek g_raid3_regular_release(sc); 17403650be51SPawel Jakub Dawidek 17413650be51SPawel Jakub Dawidek /* Find the smallest offset. */ 17423650be51SPawel Jakub Dawidek moffset = sc->sc_mediasize; 17433650be51SPawel Jakub Dawidek for (i = 0; i < g_raid3_syncreqs; i++) { 17443650be51SPawel Jakub Dawidek bp = sync->ds_bios[i]; 17453650be51SPawel Jakub Dawidek boffset = bp->bio_offset; 17463650be51SPawel Jakub Dawidek if (bp->bio_cmd == BIO_WRITE) 17473650be51SPawel Jakub Dawidek boffset *= sc->sc_ndisks - 1; 17483650be51SPawel Jakub Dawidek if (boffset < moffset) 17493650be51SPawel Jakub Dawidek moffset = boffset; 17503650be51SPawel Jakub Dawidek } 17513650be51SPawel Jakub Dawidek if (sync->ds_offset_done + (MAXPHYS * 100) < moffset) { 17523650be51SPawel Jakub Dawidek /* Update offset_done on every 100 blocks. */ 17533650be51SPawel Jakub Dawidek sync->ds_offset_done = moffset; 17542d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 17552d1661a5SPawel Jakub Dawidek } 17562d1661a5SPawel Jakub Dawidek return; 1757d2fb9c62SPawel Jakub Dawidek } 17582d1661a5SPawel Jakub Dawidek default: 17592d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Invalid command here: %u (device=%s)", 17602d1661a5SPawel Jakub Dawidek bp->bio_cmd, sc->sc_name)); 17612d1661a5SPawel Jakub Dawidek break; 17622d1661a5SPawel Jakub Dawidek } 17632d1661a5SPawel Jakub Dawidek } 17642d1661a5SPawel Jakub Dawidek 17652d1661a5SPawel Jakub Dawidek static int 17662d1661a5SPawel Jakub Dawidek g_raid3_register_request(struct bio *pbp) 17672d1661a5SPawel Jakub Dawidek { 17682d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 17692d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 17702d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 1771ee40c7aaSPawel Jakub Dawidek struct bio *cbp, *tmpbp; 17722d1661a5SPawel Jakub Dawidek off_t offset, length; 1773fa6a7837SDavid E. O'Brien u_int n, ndisks; 1774dba915cfSPawel Jakub Dawidek int round_robin, verify; 17752d1661a5SPawel Jakub Dawidek 1776fa6a7837SDavid E. O'Brien ndisks = 0; 17772d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 17782d1661a5SPawel Jakub Dawidek if ((pbp->bio_cflags & G_RAID3_BIO_CFLAG_REGSYNC) != 0 && 17792d1661a5SPawel Jakub Dawidek sc->sc_syncdisk == NULL) { 17802d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, EIO); 17812d1661a5SPawel Jakub Dawidek return (0); 17822d1661a5SPawel Jakub Dawidek } 17832d1661a5SPawel Jakub Dawidek g_raid3_init_bio(pbp); 17842d1661a5SPawel Jakub Dawidek length = pbp->bio_length / (sc->sc_ndisks - 1); 17852d1661a5SPawel Jakub Dawidek offset = pbp->bio_offset / (sc->sc_ndisks - 1); 1786dba915cfSPawel Jakub Dawidek round_robin = verify = 0; 17872d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 17882d1661a5SPawel Jakub Dawidek case BIO_READ: 1789dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 1790dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1791dba915cfSPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_VERIFY; 1792dba915cfSPawel Jakub Dawidek verify = 1; 1793dba915cfSPawel Jakub Dawidek ndisks = sc->sc_ndisks; 1794dba915cfSPawel Jakub Dawidek } else { 1795dba915cfSPawel Jakub Dawidek verify = 0; 17962d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks - 1; 1797dba915cfSPawel Jakub Dawidek } 1798dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0 && 1799dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1800dba915cfSPawel Jakub Dawidek round_robin = 1; 1801dba915cfSPawel Jakub Dawidek } else { 1802dba915cfSPawel Jakub Dawidek round_robin = 0; 1803dba915cfSPawel Jakub Dawidek } 1804dba915cfSPawel Jakub Dawidek KASSERT(!round_robin || !verify, 1805dba915cfSPawel Jakub Dawidek ("ROUND-ROBIN and VERIFY are mutually exclusive.")); 1806f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = &sc->sc_disks[sc->sc_ndisks - 1]; 18072d1661a5SPawel Jakub Dawidek break; 18082d1661a5SPawel Jakub Dawidek case BIO_WRITE: 18092d1661a5SPawel Jakub Dawidek case BIO_DELETE: 18103650be51SPawel Jakub Dawidek /* 18113650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a synchronization 18123650be51SPawel Jakub Dawidek * request. 18133650be51SPawel Jakub Dawidek */ 18143650be51SPawel Jakub Dawidek if (g_raid3_sync_collision(sc, pbp)) { 18153650be51SPawel Jakub Dawidek g_raid3_regular_delay(sc, pbp); 18163650be51SPawel Jakub Dawidek return (0); 18173650be51SPawel Jakub Dawidek } 1818d2fb9c62SPawel Jakub Dawidek 18194d006a98SPawel Jakub Dawidek if (sc->sc_idle) 18204d006a98SPawel Jakub Dawidek g_raid3_unidle(sc); 18210962f942SPawel Jakub Dawidek else 182201f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 18234d006a98SPawel Jakub Dawidek 18242d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks; 18252d1661a5SPawel Jakub Dawidek break; 18262d1661a5SPawel Jakub Dawidek } 18272d1661a5SPawel Jakub Dawidek for (n = 0; n < ndisks; n++) { 18282d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 18292d1661a5SPawel Jakub Dawidek cbp = g_raid3_clone_bio(sc, pbp); 18302d1661a5SPawel Jakub Dawidek if (cbp == NULL) { 18312d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 18322d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 1833a65a0da2SPawel Jakub Dawidek /* 1834a65a0da2SPawel Jakub Dawidek * To prevent deadlock, we must run back up 1835a65a0da2SPawel Jakub Dawidek * with the ENOMEM for failed requests of any 1836a65a0da2SPawel Jakub Dawidek * of our consumers. Our own sync requests 1837a65a0da2SPawel Jakub Dawidek * can stick around, as they are finite. 1838a65a0da2SPawel Jakub Dawidek */ 1839a65a0da2SPawel Jakub Dawidek if ((pbp->bio_cflags & 1840a65a0da2SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_REGULAR) != 0) { 1841a65a0da2SPawel Jakub Dawidek g_io_deliver(pbp, ENOMEM); 1842a65a0da2SPawel Jakub Dawidek return (0); 1843a65a0da2SPawel Jakub Dawidek } 18442d1661a5SPawel Jakub Dawidek return (ENOMEM); 18452d1661a5SPawel Jakub Dawidek } 18462d1661a5SPawel Jakub Dawidek cbp->bio_offset = offset; 18472d1661a5SPawel Jakub Dawidek cbp->bio_length = length; 18482d1661a5SPawel Jakub Dawidek cbp->bio_done = g_raid3_done; 18492d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 18502d1661a5SPawel Jakub Dawidek case BIO_READ: 18512d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 18522d1661a5SPawel Jakub Dawidek /* 18532d1661a5SPawel Jakub Dawidek * Replace invalid component with the parity 18542d1661a5SPawel Jakub Dawidek * component. 18552d1661a5SPawel Jakub Dawidek */ 18562d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 18572d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 18582d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 1859f5a2f7feSPawel Jakub Dawidek } else if (round_robin && 1860f5a2f7feSPawel Jakub Dawidek disk->d_no == sc->sc_round_robin) { 1861f5a2f7feSPawel Jakub Dawidek /* 1862f5a2f7feSPawel Jakub Dawidek * In round-robin mode skip one data component 1863f5a2f7feSPawel Jakub Dawidek * and use parity component when reading. 1864f5a2f7feSPawel Jakub Dawidek */ 1865f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = disk; 1866f5a2f7feSPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 1867f5a2f7feSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1868f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin++; 1869f5a2f7feSPawel Jakub Dawidek round_robin = 0; 1870dba915cfSPawel Jakub Dawidek } else if (verify && disk->d_no == sc->sc_ndisks - 1) { 1871dba915cfSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 18722d1661a5SPawel Jakub Dawidek } 18732d1661a5SPawel Jakub Dawidek break; 18742d1661a5SPawel Jakub Dawidek case BIO_WRITE: 18752d1661a5SPawel Jakub Dawidek case BIO_DELETE: 18762d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 18772d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 18782d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 18792d1661a5SPawel Jakub Dawidek /* 18802d1661a5SPawel Jakub Dawidek * Active parity component, mark it as such. 18812d1661a5SPawel Jakub Dawidek */ 18822d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 18832d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_PARITY; 18842d1661a5SPawel Jakub Dawidek } 18852d1661a5SPawel Jakub Dawidek } else { 18862d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 18872d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 18882d1661a5SPawel Jakub Dawidek /* 18892d1661a5SPawel Jakub Dawidek * Parity component is not connected, 18902d1661a5SPawel Jakub Dawidek * so destroy its request. 18912d1661a5SPawel Jakub Dawidek */ 18922d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= 18932d1661a5SPawel Jakub Dawidek G_RAID3_BIO_PFLAG_NOPARITY; 18942d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 18952d1661a5SPawel Jakub Dawidek cbp = NULL; 18962d1661a5SPawel Jakub Dawidek } else { 18972d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 18982d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_NODISK; 18992d1661a5SPawel Jakub Dawidek disk = NULL; 19002d1661a5SPawel Jakub Dawidek } 19012d1661a5SPawel Jakub Dawidek } 19022d1661a5SPawel Jakub Dawidek break; 19032d1661a5SPawel Jakub Dawidek } 19042d1661a5SPawel Jakub Dawidek if (cbp != NULL) 19052d1661a5SPawel Jakub Dawidek cbp->bio_caller2 = disk; 19062d1661a5SPawel Jakub Dawidek } 19072d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 19082d1661a5SPawel Jakub Dawidek case BIO_READ: 1909f5a2f7feSPawel Jakub Dawidek if (round_robin) { 1910f5a2f7feSPawel Jakub Dawidek /* 1911f5a2f7feSPawel Jakub Dawidek * If we are in round-robin mode and 'round_robin' is 1912f5a2f7feSPawel Jakub Dawidek * still 1, it means, that we skipped parity component 1913f5a2f7feSPawel Jakub Dawidek * for this read and must reset sc_round_robin field. 1914f5a2f7feSPawel Jakub Dawidek */ 1915f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 1916f5a2f7feSPawel Jakub Dawidek } 1917ee40c7aaSPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 19182d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 19192d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 19202d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 19212d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 19223650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 19232d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", 19242d1661a5SPawel Jakub Dawidek cp->provider->name, cp->acr, cp->acw, cp->ace)); 192579e61493SPawel Jakub Dawidek cp->index++; 19262d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 19272d1661a5SPawel Jakub Dawidek } 19282d1661a5SPawel Jakub Dawidek break; 19292d1661a5SPawel Jakub Dawidek case BIO_WRITE: 19302d1661a5SPawel Jakub Dawidek case BIO_DELETE: 19312d1661a5SPawel Jakub Dawidek /* 19323650be51SPawel Jakub Dawidek * Put request onto inflight queue, so we can check if new 19333650be51SPawel Jakub Dawidek * synchronization requests don't collide with it. 19343650be51SPawel Jakub Dawidek */ 19353650be51SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_inflight, pbp); 19363650be51SPawel Jakub Dawidek 19373650be51SPawel Jakub Dawidek /* 19382d1661a5SPawel Jakub Dawidek * Bump syncid on first write. 19392d1661a5SPawel Jakub Dawidek */ 1940ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) { 1941a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 1942d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(sc); 19432d1661a5SPawel Jakub Dawidek } 19442d1661a5SPawel Jakub Dawidek g_raid3_scatter(pbp); 19452d1661a5SPawel Jakub Dawidek break; 19462d1661a5SPawel Jakub Dawidek } 19472d1661a5SPawel Jakub Dawidek return (0); 19482d1661a5SPawel Jakub Dawidek } 19492d1661a5SPawel Jakub Dawidek 19502d1661a5SPawel Jakub Dawidek static int 19512d1661a5SPawel Jakub Dawidek g_raid3_can_destroy(struct g_raid3_softc *sc) 19522d1661a5SPawel Jakub Dawidek { 19532d1661a5SPawel Jakub Dawidek struct g_geom *gp; 19542d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 19552d1661a5SPawel Jakub Dawidek 19562d1661a5SPawel Jakub Dawidek g_topology_assert(); 19572d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 195818486a5eSPawel Jakub Dawidek if (gp->softc == NULL) 195918486a5eSPawel Jakub Dawidek return (1); 19602d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 19612d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 19622d1661a5SPawel Jakub Dawidek return (0); 19632d1661a5SPawel Jakub Dawidek } 19642d1661a5SPawel Jakub Dawidek gp = sc->sc_sync.ds_geom; 19652d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 19662d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 19672d1661a5SPawel Jakub Dawidek return (0); 19682d1661a5SPawel Jakub Dawidek } 19692d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "No I/O requests for %s, it can be destroyed.", 19702d1661a5SPawel Jakub Dawidek sc->sc_name); 19712d1661a5SPawel Jakub Dawidek return (1); 19722d1661a5SPawel Jakub Dawidek } 19732d1661a5SPawel Jakub Dawidek 19742d1661a5SPawel Jakub Dawidek static int 19752d1661a5SPawel Jakub Dawidek g_raid3_try_destroy(struct g_raid3_softc *sc) 19762d1661a5SPawel Jakub Dawidek { 19772d1661a5SPawel Jakub Dawidek 19783650be51SPawel Jakub Dawidek g_topology_assert_not(); 19793650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 19803650be51SPawel Jakub Dawidek 19814ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 19824ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 19834ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 19844ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 19854ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 19864ed854e8SPawel Jakub Dawidek } 19874ed854e8SPawel Jakub Dawidek 19882d1661a5SPawel Jakub Dawidek g_topology_lock(); 19892d1661a5SPawel Jakub Dawidek if (!g_raid3_can_destroy(sc)) { 19902d1661a5SPawel Jakub Dawidek g_topology_unlock(); 19912d1661a5SPawel Jakub Dawidek return (0); 19922d1661a5SPawel Jakub Dawidek } 199318486a5eSPawel Jakub Dawidek sc->sc_geom->softc = NULL; 199418486a5eSPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 1995a245a548SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_WAIT) != 0) { 19962d1661a5SPawel Jakub Dawidek g_topology_unlock(); 19972d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 19982d1661a5SPawel Jakub Dawidek &sc->sc_worker); 19993650be51SPawel Jakub Dawidek /* Unlock sc_lock here, as it can be destroyed after wakeup. */ 20003650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 20012d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_worker); 20022d1661a5SPawel Jakub Dawidek sc->sc_worker = NULL; 20032d1661a5SPawel Jakub Dawidek } else { 20042d1661a5SPawel Jakub Dawidek g_topology_unlock(); 20053650be51SPawel Jakub Dawidek g_raid3_destroy_device(sc); 20062d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 20072d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 20082d1661a5SPawel Jakub Dawidek } 20092d1661a5SPawel Jakub Dawidek return (1); 20102d1661a5SPawel Jakub Dawidek } 20112d1661a5SPawel Jakub Dawidek 20122d1661a5SPawel Jakub Dawidek /* 20132d1661a5SPawel Jakub Dawidek * Worker thread. 20142d1661a5SPawel Jakub Dawidek */ 20152d1661a5SPawel Jakub Dawidek static void 20162d1661a5SPawel Jakub Dawidek g_raid3_worker(void *arg) 20172d1661a5SPawel Jakub Dawidek { 20182d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 20192d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 20202d1661a5SPawel Jakub Dawidek struct bio *bp; 20210962f942SPawel Jakub Dawidek int timeout; 20222d1661a5SPawel Jakub Dawidek 20232d1661a5SPawel Jakub Dawidek sc = arg; 2024982d11f8SJeff Roberson thread_lock(curthread); 202563710c4dSJohn Baldwin sched_prio(curthread, PRIBIO); 2026982d11f8SJeff Roberson thread_unlock(curthread); 20272d1661a5SPawel Jakub Dawidek 20283650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 20292d1661a5SPawel Jakub Dawidek for (;;) { 20302d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: Let's see...", __func__); 20312d1661a5SPawel Jakub Dawidek /* 20322d1661a5SPawel Jakub Dawidek * First take a look at events. 20332d1661a5SPawel Jakub Dawidek * This is important to handle events before any I/O requests. 20342d1661a5SPawel Jakub Dawidek */ 20352d1661a5SPawel Jakub Dawidek ep = g_raid3_event_get(sc); 20363650be51SPawel Jakub Dawidek if (ep != NULL) { 2037d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 20382d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) { 20392d1661a5SPawel Jakub Dawidek /* Update only device status. */ 20402d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, 20412d1661a5SPawel Jakub Dawidek "Running event for device %s.", 20422d1661a5SPawel Jakub Dawidek sc->sc_name); 20432d1661a5SPawel Jakub Dawidek ep->e_error = 0; 2044d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 1); 20452d1661a5SPawel Jakub Dawidek } else { 20462d1661a5SPawel Jakub Dawidek /* Update disk status. */ 20472d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Running event for disk %s.", 20482d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(ep->e_disk)); 20492d1661a5SPawel Jakub Dawidek ep->e_error = g_raid3_update_disk(ep->e_disk, 2050d97d5ee9SPawel Jakub Dawidek ep->e_state); 20512d1661a5SPawel Jakub Dawidek if (ep->e_error == 0) 2052d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 0); 20532d1661a5SPawel Jakub Dawidek } 20542d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) { 20552d1661a5SPawel Jakub Dawidek KASSERT(ep->e_error == 0, 20562d1661a5SPawel Jakub Dawidek ("Error cannot be handled.")); 20572d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 20582d1661a5SPawel Jakub Dawidek } else { 20592d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 20602d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 20612d1661a5SPawel Jakub Dawidek ep); 20622d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 20632d1661a5SPawel Jakub Dawidek wakeup(ep); 20642d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 20652d1661a5SPawel Jakub Dawidek } 20662d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 20672d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 20683650be51SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) { 20693650be51SPawel Jakub Dawidek curthread->td_pflags &= ~TDP_GEOM; 20703650be51SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Thread exiting."); 20713745c395SJulian Elischer kproc_exit(0); 20722d1661a5SPawel Jakub Dawidek } 20733650be51SPawel Jakub Dawidek } 20742d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 1.", __func__); 20752d1661a5SPawel Jakub Dawidek continue; 20762d1661a5SPawel Jakub Dawidek } 20772d1661a5SPawel Jakub Dawidek /* 20780962f942SPawel Jakub Dawidek * Check if we can mark array as CLEAN and if we can't take 20790962f942SPawel Jakub Dawidek * how much seconds should we wait. 20800962f942SPawel Jakub Dawidek */ 20813650be51SPawel Jakub Dawidek timeout = g_raid3_idle(sc, -1); 20820962f942SPawel Jakub Dawidek /* 20832d1661a5SPawel Jakub Dawidek * Now I/O requests. 20842d1661a5SPawel Jakub Dawidek */ 20852d1661a5SPawel Jakub Dawidek /* Get first request from the queue. */ 20862d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 20872d1661a5SPawel Jakub Dawidek bp = bioq_first(&sc->sc_queue); 20882d1661a5SPawel Jakub Dawidek if (bp == NULL) { 20892d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 20902d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 20912d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 20923650be51SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) { 20933650be51SPawel Jakub Dawidek curthread->td_pflags &= ~TDP_GEOM; 2094d7fad9f6SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Thread exiting."); 20953745c395SJulian Elischer kproc_exit(0); 20963650be51SPawel Jakub Dawidek } 20972d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 20982d1661a5SPawel Jakub Dawidek } 20993650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 2100a2fe5c66SPawel Jakub Dawidek /* 2101a2fe5c66SPawel Jakub Dawidek * XXX: We can miss an event here, because an event 2102a2fe5c66SPawel Jakub Dawidek * can be added without sx-device-lock and without 2103a2fe5c66SPawel Jakub Dawidek * mtx-queue-lock. Maybe I should just stop using 2104a2fe5c66SPawel Jakub Dawidek * dedicated mutex for events synchronization and 2105a2fe5c66SPawel Jakub Dawidek * stick with the queue lock? 2106a2fe5c66SPawel Jakub Dawidek * The event will hang here until next I/O request 2107a2fe5c66SPawel Jakub Dawidek * or next event is received. 2108a2fe5c66SPawel Jakub Dawidek */ 21090962f942SPawel Jakub Dawidek MSLEEP(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, "r3:w1", 21100962f942SPawel Jakub Dawidek timeout * hz); 21113650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 21129bb09163SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 4.", __func__); 21132d1661a5SPawel Jakub Dawidek continue; 21142d1661a5SPawel Jakub Dawidek } 211584edb86dSPawel Jakub Dawidek process: 21162d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 21172d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 21182d1661a5SPawel Jakub Dawidek 21198e007c52SPawel Jakub Dawidek if (bp->bio_from->geom == sc->sc_sync.ds_geom && 21208e007c52SPawel Jakub Dawidek (bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) != 0) { 21218e007c52SPawel Jakub Dawidek g_raid3_sync_request(bp); /* READ */ 21228e007c52SPawel Jakub Dawidek } else if (bp->bio_to != sc->sc_provider) { 21233650be51SPawel Jakub Dawidek if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) != 0) 21242d1661a5SPawel Jakub Dawidek g_raid3_regular_request(bp); 21253650be51SPawel Jakub Dawidek else if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) != 0) 21268e007c52SPawel Jakub Dawidek g_raid3_sync_request(bp); /* WRITE */ 2127de6f1c7cSPawel Jakub Dawidek else { 2128de6f1c7cSPawel Jakub Dawidek KASSERT(0, 2129de6f1c7cSPawel Jakub Dawidek ("Invalid request cflags=0x%hhx to=%s.", 2130de6f1c7cSPawel Jakub Dawidek bp->bio_cflags, bp->bio_to->name)); 2131de6f1c7cSPawel Jakub Dawidek } 2132de6f1c7cSPawel Jakub Dawidek } else if (g_raid3_register_request(bp) != 0) { 21332d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 21343650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 213584edb86dSPawel Jakub Dawidek /* 213684edb86dSPawel Jakub Dawidek * We are short in memory, let see if there are finished 213784edb86dSPawel Jakub Dawidek * request we can free. 213884edb86dSPawel Jakub Dawidek */ 213984edb86dSPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 214084edb86dSPawel Jakub Dawidek if (bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) 214184edb86dSPawel Jakub Dawidek goto process; 21422d1661a5SPawel Jakub Dawidek } 214384edb86dSPawel Jakub Dawidek /* 214484edb86dSPawel Jakub Dawidek * No finished regular request, so at least keep 214584edb86dSPawel Jakub Dawidek * synchronization running. 214684edb86dSPawel Jakub Dawidek */ 214784edb86dSPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 214884edb86dSPawel Jakub Dawidek if (bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) 214984edb86dSPawel Jakub Dawidek goto process; 215084edb86dSPawel Jakub Dawidek } 215184edb86dSPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 215284edb86dSPawel Jakub Dawidek MSLEEP(&sc->sc_queue, &sc->sc_queue_mtx, PRIBIO | PDROP, 215384edb86dSPawel Jakub Dawidek "r3:lowmem", hz / 10); 215484edb86dSPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 21552d1661a5SPawel Jakub Dawidek } 2156d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 9.", __func__); 21572d1661a5SPawel Jakub Dawidek } 21582d1661a5SPawel Jakub Dawidek } 21592d1661a5SPawel Jakub Dawidek 21602d1661a5SPawel Jakub Dawidek static void 21610962f942SPawel Jakub Dawidek g_raid3_update_idle(struct g_raid3_softc *sc, struct g_raid3_disk *disk) 21622d1661a5SPawel Jakub Dawidek { 21632d1661a5SPawel Jakub Dawidek 21643650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 2165501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0) 2166501250baSPawel Jakub Dawidek return; 21670962f942SPawel Jakub Dawidek if (!sc->sc_idle && (disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) == 0) { 21682d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 21693650be51SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 21702d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 21710962f942SPawel Jakub Dawidek } else if (sc->sc_idle && 21720962f942SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) { 21732d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 21743650be51SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 21752d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 21762d1661a5SPawel Jakub Dawidek } 21772d1661a5SPawel Jakub Dawidek } 21782d1661a5SPawel Jakub Dawidek 21792d1661a5SPawel Jakub Dawidek static void 21802d1661a5SPawel Jakub Dawidek g_raid3_sync_start(struct g_raid3_softc *sc) 21812d1661a5SPawel Jakub Dawidek { 21822d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 21833650be51SPawel Jakub Dawidek struct g_consumer *cp; 21843650be51SPawel Jakub Dawidek struct bio *bp; 21852d1661a5SPawel Jakub Dawidek int error; 21862d1661a5SPawel Jakub Dawidek u_int n; 21872d1661a5SPawel Jakub Dawidek 21883650be51SPawel Jakub Dawidek g_topology_assert_not(); 21893650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 21902d1661a5SPawel Jakub Dawidek 21912d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 21922d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 21932d1661a5SPawel Jakub Dawidek sc->sc_state)); 21942d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_syncdisk == NULL, ("Syncdisk is not NULL (%s, %u).", 21952d1661a5SPawel Jakub Dawidek sc->sc_name, sc->sc_state)); 21962d1661a5SPawel Jakub Dawidek disk = NULL; 21972d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 21982d1661a5SPawel Jakub Dawidek if (sc->sc_disks[n].d_state != G_RAID3_DISK_STATE_SYNCHRONIZING) 21992d1661a5SPawel Jakub Dawidek continue; 22002d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 22012d1661a5SPawel Jakub Dawidek break; 22022d1661a5SPawel Jakub Dawidek } 22032d1661a5SPawel Jakub Dawidek if (disk == NULL) 22042d1661a5SPawel Jakub Dawidek return; 22052d1661a5SPawel Jakub Dawidek 22063650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 22073650be51SPawel Jakub Dawidek g_topology_lock(); 22083650be51SPawel Jakub Dawidek cp = g_new_consumer(sc->sc_sync.ds_geom); 22093650be51SPawel Jakub Dawidek error = g_attach(cp, sc->sc_provider); 22103650be51SPawel Jakub Dawidek KASSERT(error == 0, 22113650be51SPawel Jakub Dawidek ("Cannot attach to %s (error=%d).", sc->sc_name, error)); 22123650be51SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 22133650be51SPawel Jakub Dawidek KASSERT(error == 0, ("Cannot open %s (error=%d).", sc->sc_name, error)); 22143650be51SPawel Jakub Dawidek g_topology_unlock(); 22153650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 22163650be51SPawel Jakub Dawidek 22172d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s.", sc->sc_name, 22182d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 2219501250baSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) == 0) 22202d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 22212d1661a5SPawel Jakub Dawidek KASSERT(disk->d_sync.ds_consumer == NULL, 22222d1661a5SPawel Jakub Dawidek ("Sync consumer already exists (device=%s, disk=%s).", 22232d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk))); 22243650be51SPawel Jakub Dawidek 22253650be51SPawel Jakub Dawidek disk->d_sync.ds_consumer = cp; 22262d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer->private = disk; 222779e61493SPawel Jakub Dawidek disk->d_sync.ds_consumer->index = 0; 22282d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = disk; 22293650be51SPawel Jakub Dawidek 22303650be51SPawel Jakub Dawidek /* 22313650be51SPawel Jakub Dawidek * Allocate memory for synchronization bios and initialize them. 22323650be51SPawel Jakub Dawidek */ 22333650be51SPawel Jakub Dawidek disk->d_sync.ds_bios = malloc(sizeof(struct bio *) * g_raid3_syncreqs, 22343650be51SPawel Jakub Dawidek M_RAID3, M_WAITOK); 22353650be51SPawel Jakub Dawidek for (n = 0; n < g_raid3_syncreqs; n++) { 22363650be51SPawel Jakub Dawidek bp = g_alloc_bio(); 22373650be51SPawel Jakub Dawidek disk->d_sync.ds_bios[n] = bp; 22383650be51SPawel Jakub Dawidek bp->bio_parent = NULL; 22393650be51SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 22403650be51SPawel Jakub Dawidek bp->bio_data = malloc(MAXPHYS, M_RAID3, M_WAITOK); 22413650be51SPawel Jakub Dawidek bp->bio_cflags = 0; 22423650be51SPawel Jakub Dawidek bp->bio_offset = disk->d_sync.ds_offset * (sc->sc_ndisks - 1); 22433650be51SPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 22443650be51SPawel Jakub Dawidek disk->d_sync.ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 22453650be51SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 22463650be51SPawel Jakub Dawidek bp->bio_from = disk->d_sync.ds_consumer; 22473650be51SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 2248ef25813dSRuslan Ermilov bp->bio_caller1 = (void *)(uintptr_t)n; 22493650be51SPawel Jakub Dawidek } 22503650be51SPawel Jakub Dawidek 22513650be51SPawel Jakub Dawidek /* Set the number of in-flight synchronization requests. */ 22523650be51SPawel Jakub Dawidek disk->d_sync.ds_inflight = g_raid3_syncreqs; 22533650be51SPawel Jakub Dawidek 22543650be51SPawel Jakub Dawidek /* 22553650be51SPawel Jakub Dawidek * Fire off first synchronization requests. 22563650be51SPawel Jakub Dawidek */ 22573650be51SPawel Jakub Dawidek for (n = 0; n < g_raid3_syncreqs; n++) { 22583650be51SPawel Jakub Dawidek bp = disk->d_sync.ds_bios[n]; 22593650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 22603650be51SPawel Jakub Dawidek disk->d_sync.ds_consumer->index++; 22613650be51SPawel Jakub Dawidek /* 22623650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a regular request. 22633650be51SPawel Jakub Dawidek */ 22643650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 22653650be51SPawel Jakub Dawidek g_raid3_sync_delay(sc, bp); 22663650be51SPawel Jakub Dawidek else 22673650be51SPawel Jakub Dawidek g_io_request(bp, disk->d_sync.ds_consumer); 22683650be51SPawel Jakub Dawidek } 22692d1661a5SPawel Jakub Dawidek } 22702d1661a5SPawel Jakub Dawidek 22712d1661a5SPawel Jakub Dawidek /* 22722d1661a5SPawel Jakub Dawidek * Stop synchronization process. 22732d1661a5SPawel Jakub Dawidek * type: 0 - synchronization finished 22742d1661a5SPawel Jakub Dawidek * 1 - synchronization stopped 22752d1661a5SPawel Jakub Dawidek */ 22762d1661a5SPawel Jakub Dawidek static void 22772d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(struct g_raid3_softc *sc, int type) 22782d1661a5SPawel Jakub Dawidek { 22792d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 22803650be51SPawel Jakub Dawidek struct g_consumer *cp; 22812d1661a5SPawel Jakub Dawidek 22823650be51SPawel Jakub Dawidek g_topology_assert_not(); 22833650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 22843650be51SPawel Jakub Dawidek 22852d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 22862d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 22872d1661a5SPawel Jakub Dawidek sc->sc_state)); 22882d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 22892d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = NULL; 22902d1661a5SPawel Jakub Dawidek KASSERT(disk != NULL, ("No disk was synchronized (%s).", sc->sc_name)); 22912d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 22922d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 22932d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 22942d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_consumer == NULL) 22952d1661a5SPawel Jakub Dawidek return; 22962d1661a5SPawel Jakub Dawidek 22972d1661a5SPawel Jakub Dawidek if (type == 0) { 22982d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s finished.", 22993650be51SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 23002d1661a5SPawel Jakub Dawidek } else /* if (type == 1) */ { 23012d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s stopped.", 23023650be51SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 23032d1661a5SPawel Jakub Dawidek } 23043650be51SPawel Jakub Dawidek free(disk->d_sync.ds_bios, M_RAID3); 23053650be51SPawel Jakub Dawidek disk->d_sync.ds_bios = NULL; 23063650be51SPawel Jakub Dawidek cp = disk->d_sync.ds_consumer; 23072d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 23082d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 23093650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); /* Avoid recursion on sc_lock. */ 23103650be51SPawel Jakub Dawidek g_topology_lock(); 23113650be51SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cp); 23123650be51SPawel Jakub Dawidek g_topology_unlock(); 23133650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 23142d1661a5SPawel Jakub Dawidek } 23152d1661a5SPawel Jakub Dawidek 23162d1661a5SPawel Jakub Dawidek static void 23172d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(struct g_raid3_softc *sc) 23182d1661a5SPawel Jakub Dawidek { 23192d1661a5SPawel Jakub Dawidek struct g_provider *pp; 23202d1661a5SPawel Jakub Dawidek 23213650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 23222d1661a5SPawel Jakub Dawidek 23233650be51SPawel Jakub Dawidek g_topology_lock(); 23242d1661a5SPawel Jakub Dawidek pp = g_new_providerf(sc->sc_geom, "raid3/%s", sc->sc_name); 23252d1661a5SPawel Jakub Dawidek pp->mediasize = sc->sc_mediasize; 23262d1661a5SPawel Jakub Dawidek pp->sectorsize = sc->sc_sectorsize; 23272d1661a5SPawel Jakub Dawidek sc->sc_provider = pp; 23282d1661a5SPawel Jakub Dawidek g_error_provider(pp, 0); 23293650be51SPawel Jakub Dawidek g_topology_unlock(); 23300cca572eSJohn-Mark Gurney G_RAID3_DEBUG(0, "Device %s launched (%u/%u).", pp->name, 23310cca572eSJohn-Mark Gurney g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE), sc->sc_ndisks); 23320cca572eSJohn-Mark Gurney 23332d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED) 23342d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 23352d1661a5SPawel Jakub Dawidek } 23362d1661a5SPawel Jakub Dawidek 23372d1661a5SPawel Jakub Dawidek static void 23382d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(struct g_raid3_softc *sc) 23392d1661a5SPawel Jakub Dawidek { 23402d1661a5SPawel Jakub Dawidek struct bio *bp; 23412d1661a5SPawel Jakub Dawidek 23423650be51SPawel Jakub Dawidek g_topology_assert_not(); 23432d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider != NULL, ("NULL provider (device=%s).", 23442d1661a5SPawel Jakub Dawidek sc->sc_name)); 23452d1661a5SPawel Jakub Dawidek 23463650be51SPawel Jakub Dawidek g_topology_lock(); 23472d1661a5SPawel Jakub Dawidek g_error_provider(sc->sc_provider, ENXIO); 23482d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 23492d1661a5SPawel Jakub Dawidek while ((bp = bioq_first(&sc->sc_queue)) != NULL) { 23502d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 23512d1661a5SPawel Jakub Dawidek g_io_deliver(bp, ENXIO); 23522d1661a5SPawel Jakub Dawidek } 23532d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 23542d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s destroyed.", sc->sc_name, 23552d1661a5SPawel Jakub Dawidek sc->sc_provider->name); 23562d1661a5SPawel Jakub Dawidek sc->sc_provider->flags |= G_PF_WITHER; 23572d1661a5SPawel Jakub Dawidek g_orphan_provider(sc->sc_provider, ENXIO); 23583650be51SPawel Jakub Dawidek g_topology_unlock(); 23592d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 23602d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 23612d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 23622d1661a5SPawel Jakub Dawidek } 23632d1661a5SPawel Jakub Dawidek 23642d1661a5SPawel Jakub Dawidek static void 23652d1661a5SPawel Jakub Dawidek g_raid3_go(void *arg) 23662d1661a5SPawel Jakub Dawidek { 23672d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 23682d1661a5SPawel Jakub Dawidek 23692d1661a5SPawel Jakub Dawidek sc = arg; 23702d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Force device %s start due to timeout.", sc->sc_name); 23712d1661a5SPawel Jakub Dawidek g_raid3_event_send(sc, 0, 23722d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT | G_RAID3_EVENT_DEVICE); 23732d1661a5SPawel Jakub Dawidek } 23742d1661a5SPawel Jakub Dawidek 23752d1661a5SPawel Jakub Dawidek static u_int 23762d1661a5SPawel Jakub Dawidek g_raid3_determine_state(struct g_raid3_disk *disk) 23772d1661a5SPawel Jakub Dawidek { 23782d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 23792d1661a5SPawel Jakub Dawidek u_int state; 23802d1661a5SPawel Jakub Dawidek 23812d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 23822d1661a5SPawel Jakub Dawidek if (sc->sc_syncid == disk->d_sync.ds_syncid) { 23832d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 23842d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) == 0) { 23852d1661a5SPawel Jakub Dawidek /* Disk does not need synchronization. */ 23862d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_ACTIVE; 23872d1661a5SPawel Jakub Dawidek } else { 23882d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 23892d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 23902d1661a5SPawel Jakub Dawidek (disk->d_flags & 23912d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 23922d1661a5SPawel Jakub Dawidek /* 23932d1661a5SPawel Jakub Dawidek * We can start synchronization from 23942d1661a5SPawel Jakub Dawidek * the stored offset. 23952d1661a5SPawel Jakub Dawidek */ 23962d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 23972d1661a5SPawel Jakub Dawidek } else { 23982d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 23992d1661a5SPawel Jakub Dawidek } 24002d1661a5SPawel Jakub Dawidek } 24012d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < sc->sc_syncid) { 24022d1661a5SPawel Jakub Dawidek /* 24032d1661a5SPawel Jakub Dawidek * Reset all synchronization data for this disk, 24042d1661a5SPawel Jakub Dawidek * because if it even was synchronized, it was 24052d1661a5SPawel Jakub Dawidek * synchronized to disks with different syncid. 24062d1661a5SPawel Jakub Dawidek */ 24072d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 24082d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 24092d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 24102d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 24112d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 24122d1661a5SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 24132d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 24142d1661a5SPawel Jakub Dawidek } else { 24152d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 24162d1661a5SPawel Jakub Dawidek } 24172d1661a5SPawel Jakub Dawidek } else /* if (sc->sc_syncid < disk->d_sync.ds_syncid) */ { 24182d1661a5SPawel Jakub Dawidek /* 24192d1661a5SPawel Jakub Dawidek * Not good, NOT GOOD! 24202d1661a5SPawel Jakub Dawidek * It means that device was started on stale disks 24212d1661a5SPawel Jakub Dawidek * and more fresh disk just arrive. 24223c57a41dSPawel Jakub Dawidek * If there were writes, device is broken, sorry. 24232d1661a5SPawel Jakub Dawidek * I think the best choice here is don't touch 2424776fc0e9SYaroslav Tykhiy * this disk and inform the user loudly. 24252d1661a5SPawel Jakub Dawidek */ 24262d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s was started before the freshest " 24272d1661a5SPawel Jakub Dawidek "disk (%s) arrives!! It will not be connected to the " 24282d1661a5SPawel Jakub Dawidek "running device.", sc->sc_name, 24292d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 24302d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 24312d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_NONE; 24322d1661a5SPawel Jakub Dawidek /* Return immediately, because disk was destroyed. */ 24332d1661a5SPawel Jakub Dawidek return (state); 24342d1661a5SPawel Jakub Dawidek } 24352d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "State for %s disk: %s.", 24362d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(state)); 24372d1661a5SPawel Jakub Dawidek return (state); 24382d1661a5SPawel Jakub Dawidek } 24392d1661a5SPawel Jakub Dawidek 24402d1661a5SPawel Jakub Dawidek /* 24412d1661a5SPawel Jakub Dawidek * Update device state. 24422d1661a5SPawel Jakub Dawidek */ 24432d1661a5SPawel Jakub Dawidek static void 2444d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(struct g_raid3_softc *sc, boolean_t force) 24452d1661a5SPawel Jakub Dawidek { 24462d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 24472d1661a5SPawel Jakub Dawidek u_int state; 24482d1661a5SPawel Jakub Dawidek 24493650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 24502d1661a5SPawel Jakub Dawidek 24512d1661a5SPawel Jakub Dawidek switch (sc->sc_state) { 24522d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_STARTING: 24532d1661a5SPawel Jakub Dawidek { 2454a245a548SPawel Jakub Dawidek u_int n, ndirty, ndisks, genid, syncid; 24552d1661a5SPawel Jakub Dawidek 24562d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider == NULL, 24572d1661a5SPawel Jakub Dawidek ("Non-NULL provider in STARTING state (%s).", sc->sc_name)); 24582d1661a5SPawel Jakub Dawidek /* 24592d1661a5SPawel Jakub Dawidek * Are we ready? We are, if all disks are connected or 24602d1661a5SPawel Jakub Dawidek * one disk is missing and 'force' is true. 24612d1661a5SPawel Jakub Dawidek */ 24622d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, -1) + force == sc->sc_ndisks) { 24632d1661a5SPawel Jakub Dawidek if (!force) 24642d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 24652d1661a5SPawel Jakub Dawidek } else { 24662d1661a5SPawel Jakub Dawidek if (force) { 24672d1661a5SPawel Jakub Dawidek /* 24682d1661a5SPawel Jakub Dawidek * Timeout expired, so destroy device. 24692d1661a5SPawel Jakub Dawidek */ 24702d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 24714ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", 24724ed854e8SPawel Jakub Dawidek __LINE__, sc->sc_rootmount); 24734ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 24744ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 24752d1661a5SPawel Jakub Dawidek } 24762d1661a5SPawel Jakub Dawidek return; 24772d1661a5SPawel Jakub Dawidek } 24782d1661a5SPawel Jakub Dawidek 24792d1661a5SPawel Jakub Dawidek /* 2480a245a548SPawel Jakub Dawidek * Find the biggest genid. 2481a245a548SPawel Jakub Dawidek */ 2482a245a548SPawel Jakub Dawidek genid = 0; 2483a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2484a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2485a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2486a245a548SPawel Jakub Dawidek continue; 2487a245a548SPawel Jakub Dawidek if (disk->d_genid > genid) 2488a245a548SPawel Jakub Dawidek genid = disk->d_genid; 2489a245a548SPawel Jakub Dawidek } 2490a245a548SPawel Jakub Dawidek sc->sc_genid = genid; 2491a245a548SPawel Jakub Dawidek /* 2492a245a548SPawel Jakub Dawidek * Remove all disks without the biggest genid. 2493a245a548SPawel Jakub Dawidek */ 2494a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2495a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2496a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2497a245a548SPawel Jakub Dawidek continue; 2498a245a548SPawel Jakub Dawidek if (disk->d_genid < genid) { 2499a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2500a245a548SPawel Jakub Dawidek "Component %s (device %s) broken, skipping.", 2501a245a548SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 2502a245a548SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 2503a245a548SPawel Jakub Dawidek } 2504a245a548SPawel Jakub Dawidek } 2505a245a548SPawel Jakub Dawidek 2506a245a548SPawel Jakub Dawidek /* 25072d1661a5SPawel Jakub Dawidek * There must be at least 'sc->sc_ndisks - 1' components 25082d1661a5SPawel Jakub Dawidek * with the same syncid and without SYNCHRONIZING flag. 25092d1661a5SPawel Jakub Dawidek */ 25102d1661a5SPawel Jakub Dawidek 25112d1661a5SPawel Jakub Dawidek /* 25122d1661a5SPawel Jakub Dawidek * Find the biggest syncid, number of valid components and 25132d1661a5SPawel Jakub Dawidek * number of dirty components. 25142d1661a5SPawel Jakub Dawidek */ 25152d1661a5SPawel Jakub Dawidek ndirty = ndisks = syncid = 0; 25162d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 25172d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 25182d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 25192d1661a5SPawel Jakub Dawidek continue; 25202d1661a5SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) 25212d1661a5SPawel Jakub Dawidek ndirty++; 25222d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_syncid > syncid) { 25232d1661a5SPawel Jakub Dawidek syncid = disk->d_sync.ds_syncid; 25242d1661a5SPawel Jakub Dawidek ndisks = 0; 25252d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < syncid) { 25262d1661a5SPawel Jakub Dawidek continue; 25272d1661a5SPawel Jakub Dawidek } 25282d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 25292d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) != 0) { 25302d1661a5SPawel Jakub Dawidek continue; 25312d1661a5SPawel Jakub Dawidek } 25322d1661a5SPawel Jakub Dawidek ndisks++; 25332d1661a5SPawel Jakub Dawidek } 25342d1661a5SPawel Jakub Dawidek /* 25352d1661a5SPawel Jakub Dawidek * Do we have enough valid components? 25362d1661a5SPawel Jakub Dawidek */ 25372d1661a5SPawel Jakub Dawidek if (ndisks + 1 < sc->sc_ndisks) { 25382d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 25392d1661a5SPawel Jakub Dawidek "Device %s is broken, too few valid components.", 25402d1661a5SPawel Jakub Dawidek sc->sc_name); 25412d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 25422d1661a5SPawel Jakub Dawidek return; 25432d1661a5SPawel Jakub Dawidek } 25442d1661a5SPawel Jakub Dawidek /* 25452d1661a5SPawel Jakub Dawidek * If there is one DIRTY component and all disks are present, 25462d1661a5SPawel Jakub Dawidek * mark it for synchronization. If there is more than one DIRTY 25472d1661a5SPawel Jakub Dawidek * component, mark parity component for synchronization. 25482d1661a5SPawel Jakub Dawidek */ 25492d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks && ndirty == 1) { 25502d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 25512d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 25522d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 25532d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_DIRTY) == 0) { 25542d1661a5SPawel Jakub Dawidek continue; 25552d1661a5SPawel Jakub Dawidek } 25562d1661a5SPawel Jakub Dawidek disk->d_flags |= 25572d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING; 25582d1661a5SPawel Jakub Dawidek } 25592d1661a5SPawel Jakub Dawidek } else if (ndisks == sc->sc_ndisks && ndirty > 1) { 25602d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 25612d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 25622d1661a5SPawel Jakub Dawidek } 25632d1661a5SPawel Jakub Dawidek 25642d1661a5SPawel Jakub Dawidek sc->sc_syncid = syncid; 25652d1661a5SPawel Jakub Dawidek if (force) { 25662d1661a5SPawel Jakub Dawidek /* Remember to bump syncid on first write. */ 2567ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 25682d1661a5SPawel Jakub Dawidek } 25692d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks) 25702d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 25712d1661a5SPawel Jakub Dawidek else /* if (ndisks == sc->sc_ndisks - 1) */ 25722d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 25732d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s state changed from %s to %s.", 25742d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 25752d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 25762d1661a5SPawel Jakub Dawidek sc->sc_state = state; 25772d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 25782d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 25792d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 25802d1661a5SPawel Jakub Dawidek continue; 25812d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 25822d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, state, G_RAID3_EVENT_DONTWAIT); 2583a245a548SPawel Jakub Dawidek if (state == G_RAID3_DISK_STATE_STALE) 2584ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 25852d1661a5SPawel Jakub Dawidek } 25862d1661a5SPawel Jakub Dawidek break; 25872d1661a5SPawel Jakub Dawidek } 25882d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_DEGRADED: 25892d1661a5SPawel Jakub Dawidek /* 2590ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 25912d1661a5SPawel Jakub Dawidek */ 2592ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2593a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2594a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2595a245a548SPawel Jakub Dawidek } 2596a245a548SPawel Jakub Dawidek 25972d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 25982d1661a5SPawel Jakub Dawidek return; 25992d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < 26002d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 26012d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 26022d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 26032d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 26042d1661a5SPawel Jakub Dawidek return; 26052d1661a5SPawel Jakub Dawidek } 26062d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 26072d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 26082d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 26092d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26102d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 26112d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 26122d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 26132d1661a5SPawel Jakub Dawidek sc->sc_state = state; 26142d1661a5SPawel Jakub Dawidek } 26152d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 26162d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 26174ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 26184ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 26194ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 26204ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 26214ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 26224ed854e8SPawel Jakub Dawidek } 26232d1661a5SPawel Jakub Dawidek break; 26242d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_COMPLETE: 26252d1661a5SPawel Jakub Dawidek /* 2626ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 26272d1661a5SPawel Jakub Dawidek */ 2628ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2629a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2630a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2631a245a548SPawel Jakub Dawidek } 2632a245a548SPawel Jakub Dawidek 26332d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 26342d1661a5SPawel Jakub Dawidek return; 26352d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) >= 26362d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1, 26372d1661a5SPawel Jakub Dawidek ("Too few ACTIVE components in COMPLETE state (device %s).", 26382d1661a5SPawel Jakub Dawidek sc->sc_name)); 26392d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 26402d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 26412d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 26422d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26432d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 26442d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 26452d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 26462d1661a5SPawel Jakub Dawidek sc->sc_state = state; 26472d1661a5SPawel Jakub Dawidek } 26482d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 26492d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 26504ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 26514ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 26524ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 26534ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 26544ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 26554ed854e8SPawel Jakub Dawidek } 26562d1661a5SPawel Jakub Dawidek break; 26572d1661a5SPawel Jakub Dawidek default: 26582d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s).", sc->sc_name, 26592d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state))); 26602d1661a5SPawel Jakub Dawidek break; 26612d1661a5SPawel Jakub Dawidek } 26622d1661a5SPawel Jakub Dawidek } 26632d1661a5SPawel Jakub Dawidek 26642d1661a5SPawel Jakub Dawidek /* 26652d1661a5SPawel Jakub Dawidek * Update disk state and device state if needed. 26662d1661a5SPawel Jakub Dawidek */ 26672d1661a5SPawel Jakub Dawidek #define DISK_STATE_CHANGED() G_RAID3_DEBUG(1, \ 26682d1661a5SPawel Jakub Dawidek "Disk %s state changed from %s to %s (device %s).", \ 26692d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), \ 26702d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state), \ 26712d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state), sc->sc_name) 26722d1661a5SPawel Jakub Dawidek static int 2673d97d5ee9SPawel Jakub Dawidek g_raid3_update_disk(struct g_raid3_disk *disk, u_int state) 26742d1661a5SPawel Jakub Dawidek { 26752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 26762d1661a5SPawel Jakub Dawidek 26772d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 26783650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 26793650be51SPawel Jakub Dawidek 26802d1661a5SPawel Jakub Dawidek again: 26812d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Changing disk %s state from %s to %s.", 26822d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(disk->d_state), 26832d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state)); 26842d1661a5SPawel Jakub Dawidek switch (state) { 26852d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 26862d1661a5SPawel Jakub Dawidek /* 26872d1661a5SPawel Jakub Dawidek * Possible scenarios: 26882d1661a5SPawel Jakub Dawidek * 1. New disk arrive. 26892d1661a5SPawel Jakub Dawidek */ 26902d1661a5SPawel Jakub Dawidek /* Previous state should be NONE. */ 26912d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NONE, 26922d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 26932d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 26942d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 26952d1661a5SPawel Jakub Dawidek 26962d1661a5SPawel Jakub Dawidek disk->d_state = state; 26970cca572eSJohn-Mark Gurney G_RAID3_DEBUG(1, "Device %s: provider %s detected.", 26982d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 26992d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) 27002d1661a5SPawel Jakub Dawidek break; 27012d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27022d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27032d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27042d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27052d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27062d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27072d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 27082d1661a5SPawel Jakub Dawidek if (state != G_RAID3_DISK_STATE_NONE) 27092d1661a5SPawel Jakub Dawidek goto again; 27102d1661a5SPawel Jakub Dawidek break; 27112d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 27122d1661a5SPawel Jakub Dawidek /* 27132d1661a5SPawel Jakub Dawidek * Possible scenarios: 27142d1661a5SPawel Jakub Dawidek * 1. New disk does not need synchronization. 27152d1661a5SPawel Jakub Dawidek * 2. Synchronization process finished successfully. 27162d1661a5SPawel Jakub Dawidek */ 27172d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27182d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27192d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27202d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27212d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27222d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27232d1661a5SPawel Jakub Dawidek /* Previous state should be NEW or SYNCHRONIZING. */ 27242d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW || 27252d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 27262d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27272d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27282d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27292d1661a5SPawel Jakub Dawidek 2730bf31327cSPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 27312d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_SYNCHRONIZING; 27322d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_FORCE_SYNC; 27332d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 0); 27342d1661a5SPawel Jakub Dawidek } 27352d1661a5SPawel Jakub Dawidek disk->d_state = state; 27362d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 27372d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 27380962f942SPawel Jakub Dawidek g_raid3_update_idle(sc, disk); 2739bf31327cSPawel Jakub Dawidek g_raid3_update_metadata(disk); 27400cca572eSJohn-Mark Gurney G_RAID3_DEBUG(1, "Device %s: provider %s activated.", 27412d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27422d1661a5SPawel Jakub Dawidek break; 27432d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 27442d1661a5SPawel Jakub Dawidek /* 27452d1661a5SPawel Jakub Dawidek * Possible scenarios: 27462d1661a5SPawel Jakub Dawidek * 1. Stale disk was connected. 27472d1661a5SPawel Jakub Dawidek */ 27482d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 27492d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 27502d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27512d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27522d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27532d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27542d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27552d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27562d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27572d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27582d1661a5SPawel Jakub Dawidek /* 27592d1661a5SPawel Jakub Dawidek * STALE state is only possible if device is marked 27602d1661a5SPawel Jakub Dawidek * NOAUTOSYNC. 27612d1661a5SPawel Jakub Dawidek */ 27622d1661a5SPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) != 0, 27632d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27642d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27652d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27662d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27672d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27682d1661a5SPawel Jakub Dawidek 27692d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 27702d1661a5SPawel Jakub Dawidek disk->d_state = state; 27712d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27722d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s is stale.", 27732d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27742d1661a5SPawel Jakub Dawidek break; 27752d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 27762d1661a5SPawel Jakub Dawidek /* 27772d1661a5SPawel Jakub Dawidek * Possible scenarios: 27782d1661a5SPawel Jakub Dawidek * 1. Disk which needs synchronization was connected. 27792d1661a5SPawel Jakub Dawidek */ 27802d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 27812d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 27822d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27832d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27842d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27852d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27862d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27872d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27882d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27892d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27902d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27912d1661a5SPawel Jakub Dawidek 27922d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NEW) 27932d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 27942d1661a5SPawel Jakub Dawidek disk->d_state = state; 27952d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) { 27962d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 27972d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27982d1661a5SPawel Jakub Dawidek } 27992d1661a5SPawel Jakub Dawidek break; 28002d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_DISCONNECTED: 28012d1661a5SPawel Jakub Dawidek /* 28022d1661a5SPawel Jakub Dawidek * Possible scenarios: 28032d1661a5SPawel Jakub Dawidek * 1. Device wasn't running yet, but disk disappear. 28042d1661a5SPawel Jakub Dawidek * 2. Disk was active and disapppear. 28052d1661a5SPawel Jakub Dawidek * 3. Disk disappear during synchronization process. 28062d1661a5SPawel Jakub Dawidek */ 28072d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 28082d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 28092d1661a5SPawel Jakub Dawidek /* 28102d1661a5SPawel Jakub Dawidek * Previous state should be ACTIVE, STALE or 28112d1661a5SPawel Jakub Dawidek * SYNCHRONIZING. 28122d1661a5SPawel Jakub Dawidek */ 28132d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 28142d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_STALE || 28152d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 28162d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 28172d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28182d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28192d1661a5SPawel Jakub Dawidek } else if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) { 28202d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 28212d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 28222d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 28232d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28242d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28252d1661a5SPawel Jakub Dawidek /* 28262d1661a5SPawel Jakub Dawidek * Reset bumping syncid if disk disappeared in STARTING 28272d1661a5SPawel Jakub Dawidek * state. 28282d1661a5SPawel Jakub Dawidek */ 2829ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) 2830a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 28312d1661a5SPawel Jakub Dawidek #ifdef INVARIANTS 28322d1661a5SPawel Jakub Dawidek } else { 28332d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s, %s, %s).", 28342d1661a5SPawel Jakub Dawidek sc->sc_name, 28352d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 28362d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 28372d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 28382d1661a5SPawel Jakub Dawidek #endif 28392d1661a5SPawel Jakub Dawidek } 28402d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 28412d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s disconnected.", 28422d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 28432d1661a5SPawel Jakub Dawidek 28442d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 28452d1661a5SPawel Jakub Dawidek break; 28462d1661a5SPawel Jakub Dawidek default: 28472d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Unknown state (%u).", state)); 28482d1661a5SPawel Jakub Dawidek break; 28492d1661a5SPawel Jakub Dawidek } 28502d1661a5SPawel Jakub Dawidek return (0); 28512d1661a5SPawel Jakub Dawidek } 28522d1661a5SPawel Jakub Dawidek #undef DISK_STATE_CHANGED 28532d1661a5SPawel Jakub Dawidek 2854ea973705SPawel Jakub Dawidek int 28552d1661a5SPawel Jakub Dawidek g_raid3_read_metadata(struct g_consumer *cp, struct g_raid3_metadata *md) 28562d1661a5SPawel Jakub Dawidek { 28572d1661a5SPawel Jakub Dawidek struct g_provider *pp; 28582d1661a5SPawel Jakub Dawidek u_char *buf; 28592d1661a5SPawel Jakub Dawidek int error; 28602d1661a5SPawel Jakub Dawidek 28612d1661a5SPawel Jakub Dawidek g_topology_assert(); 28622d1661a5SPawel Jakub Dawidek 28632d1661a5SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 28642d1661a5SPawel Jakub Dawidek if (error != 0) 28652d1661a5SPawel Jakub Dawidek return (error); 28662d1661a5SPawel Jakub Dawidek pp = cp->provider; 28672d1661a5SPawel Jakub Dawidek g_topology_unlock(); 28682d1661a5SPawel Jakub Dawidek /* Metadata are stored on last sector. */ 28692d1661a5SPawel Jakub Dawidek buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize, 28702d1661a5SPawel Jakub Dawidek &error); 28712d1661a5SPawel Jakub Dawidek g_topology_lock(); 28722d1661a5SPawel Jakub Dawidek g_access(cp, -1, 0, 0); 28738a4a44b5SMaxim Sobolev if (buf == NULL) { 2874a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot read metadata from %s (error=%d).", 2875a245a548SPawel Jakub Dawidek cp->provider->name, error); 28762d1661a5SPawel Jakub Dawidek return (error); 28772d1661a5SPawel Jakub Dawidek } 28782d1661a5SPawel Jakub Dawidek 28792d1661a5SPawel Jakub Dawidek /* Decode metadata. */ 28802d1661a5SPawel Jakub Dawidek error = raid3_metadata_decode(buf, md); 28812d1661a5SPawel Jakub Dawidek g_free(buf); 28822d1661a5SPawel Jakub Dawidek if (strcmp(md->md_magic, G_RAID3_MAGIC) != 0) 28832d1661a5SPawel Jakub Dawidek return (EINVAL); 2884a245a548SPawel Jakub Dawidek if (md->md_version > G_RAID3_VERSION) { 2885a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2886a245a548SPawel Jakub Dawidek "Kernel module is too old to handle metadata from %s.", 2887a245a548SPawel Jakub Dawidek cp->provider->name); 2888a245a548SPawel Jakub Dawidek return (EINVAL); 2889a245a548SPawel Jakub Dawidek } 28902d1661a5SPawel Jakub Dawidek if (error != 0) { 28912d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "MD5 metadata hash mismatch for provider %s.", 28922d1661a5SPawel Jakub Dawidek cp->provider->name); 28932d1661a5SPawel Jakub Dawidek return (error); 28942d1661a5SPawel Jakub Dawidek } 28952d1661a5SPawel Jakub Dawidek 28962d1661a5SPawel Jakub Dawidek return (0); 28972d1661a5SPawel Jakub Dawidek } 28982d1661a5SPawel Jakub Dawidek 28992d1661a5SPawel Jakub Dawidek static int 29002d1661a5SPawel Jakub Dawidek g_raid3_check_metadata(struct g_raid3_softc *sc, struct g_provider *pp, 29012d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 29022d1661a5SPawel Jakub Dawidek { 29032d1661a5SPawel Jakub Dawidek 29042d1661a5SPawel Jakub Dawidek if (md->md_no >= sc->sc_ndisks) { 29052d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Invalid disk %s number (no=%u), skipping.", 29062d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 29072d1661a5SPawel Jakub Dawidek return (EINVAL); 29082d1661a5SPawel Jakub Dawidek } 29092d1661a5SPawel Jakub Dawidek if (sc->sc_disks[md->md_no].d_state != G_RAID3_DISK_STATE_NODISK) { 29102d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (no=%u) already exists, skipping.", 29112d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 29122d1661a5SPawel Jakub Dawidek return (EEXIST); 29132d1661a5SPawel Jakub Dawidek } 29142d1661a5SPawel Jakub Dawidek if (md->md_all != sc->sc_ndisks) { 29152d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29162d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29172d1661a5SPawel Jakub Dawidek "md_all", pp->name, sc->sc_name); 29182d1661a5SPawel Jakub Dawidek return (EINVAL); 29192d1661a5SPawel Jakub Dawidek } 292011b2174fSPawel Jakub Dawidek if ((md->md_mediasize % md->md_sectorsize) != 0) { 292111b2174fSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Invalid metadata (mediasize %% sectorsize != " 292211b2174fSPawel Jakub Dawidek "0) on disk %s (device %s), skipping.", pp->name, 292311b2174fSPawel Jakub Dawidek sc->sc_name); 292411b2174fSPawel Jakub Dawidek return (EINVAL); 292511b2174fSPawel Jakub Dawidek } 29262d1661a5SPawel Jakub Dawidek if (md->md_mediasize != sc->sc_mediasize) { 29272d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29282d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29292d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 29302d1661a5SPawel Jakub Dawidek return (EINVAL); 29312d1661a5SPawel Jakub Dawidek } 29322d1661a5SPawel Jakub Dawidek if ((md->md_mediasize % (sc->sc_ndisks - 1)) != 0) { 29332d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29342d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29352d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 29362d1661a5SPawel Jakub Dawidek return (EINVAL); 29372d1661a5SPawel Jakub Dawidek } 29382d1661a5SPawel Jakub Dawidek if ((sc->sc_mediasize / (sc->sc_ndisks - 1)) > pp->mediasize) { 29392d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29402d1661a5SPawel Jakub Dawidek "Invalid size of disk %s (device %s), skipping.", pp->name, 29412d1661a5SPawel Jakub Dawidek sc->sc_name); 29422d1661a5SPawel Jakub Dawidek return (EINVAL); 29432d1661a5SPawel Jakub Dawidek } 29442d1661a5SPawel Jakub Dawidek if ((md->md_sectorsize / pp->sectorsize) < sc->sc_ndisks - 1) { 29452d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29462d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29472d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 29482d1661a5SPawel Jakub Dawidek return (EINVAL); 29492d1661a5SPawel Jakub Dawidek } 29502d1661a5SPawel Jakub Dawidek if (md->md_sectorsize != sc->sc_sectorsize) { 29512d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29522d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 29532d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 29542d1661a5SPawel Jakub Dawidek return (EINVAL); 29552d1661a5SPawel Jakub Dawidek } 29562d1661a5SPawel Jakub Dawidek if ((sc->sc_sectorsize % pp->sectorsize) != 0) { 29572d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29582d1661a5SPawel Jakub Dawidek "Invalid sector size of disk %s (device %s), skipping.", 29592d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 29602d1661a5SPawel Jakub Dawidek return (EINVAL); 29612d1661a5SPawel Jakub Dawidek } 29622d1661a5SPawel Jakub Dawidek if ((md->md_mflags & ~G_RAID3_DEVICE_FLAG_MASK) != 0) { 29632d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29642d1661a5SPawel Jakub Dawidek "Invalid device flags on disk %s (device %s), skipping.", 29652d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 29662d1661a5SPawel Jakub Dawidek return (EINVAL); 29672d1661a5SPawel Jakub Dawidek } 2968dba915cfSPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 2969dba915cfSPawel Jakub Dawidek (md->md_mflags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0) { 2970dba915cfSPawel Jakub Dawidek /* 2971dba915cfSPawel Jakub Dawidek * VERIFY and ROUND-ROBIN options are mutally exclusive. 2972dba915cfSPawel Jakub Dawidek */ 2973dba915cfSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Both VERIFY and ROUND-ROBIN flags exist on " 2974dba915cfSPawel Jakub Dawidek "disk %s (device %s), skipping.", pp->name, sc->sc_name); 2975dba915cfSPawel Jakub Dawidek return (EINVAL); 2976dba915cfSPawel Jakub Dawidek } 29772d1661a5SPawel Jakub Dawidek if ((md->md_dflags & ~G_RAID3_DISK_FLAG_MASK) != 0) { 29782d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29792d1661a5SPawel Jakub Dawidek "Invalid disk flags on disk %s (device %s), skipping.", 29802d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 29812d1661a5SPawel Jakub Dawidek return (EINVAL); 29822d1661a5SPawel Jakub Dawidek } 29832d1661a5SPawel Jakub Dawidek return (0); 29842d1661a5SPawel Jakub Dawidek } 29852d1661a5SPawel Jakub Dawidek 2986ea973705SPawel Jakub Dawidek int 29872d1661a5SPawel Jakub Dawidek g_raid3_add_disk(struct g_raid3_softc *sc, struct g_provider *pp, 29882d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 29892d1661a5SPawel Jakub Dawidek { 29902d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 29912d1661a5SPawel Jakub Dawidek int error; 29922d1661a5SPawel Jakub Dawidek 29933650be51SPawel Jakub Dawidek g_topology_assert_not(); 29942d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Adding disk %s.", pp->name); 29952d1661a5SPawel Jakub Dawidek 29962d1661a5SPawel Jakub Dawidek error = g_raid3_check_metadata(sc, pp, md); 29972d1661a5SPawel Jakub Dawidek if (error != 0) 29982d1661a5SPawel Jakub Dawidek return (error); 2999a245a548SPawel Jakub Dawidek if (sc->sc_state != G_RAID3_DEVICE_STATE_STARTING && 3000a245a548SPawel Jakub Dawidek md->md_genid < sc->sc_genid) { 3001a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Component %s (device %s) broken, skipping.", 3002a245a548SPawel Jakub Dawidek pp->name, sc->sc_name); 3003a245a548SPawel Jakub Dawidek return (EINVAL); 3004a245a548SPawel Jakub Dawidek } 30052d1661a5SPawel Jakub Dawidek disk = g_raid3_init_disk(sc, pp, md, &error); 30062d1661a5SPawel Jakub Dawidek if (disk == NULL) 30072d1661a5SPawel Jakub Dawidek return (error); 30082d1661a5SPawel Jakub Dawidek error = g_raid3_event_send(disk, G_RAID3_DISK_STATE_NEW, 30092d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_WAIT); 3010a245a548SPawel Jakub Dawidek if (error != 0) 30112d1661a5SPawel Jakub Dawidek return (error); 3012a245a548SPawel Jakub Dawidek if (md->md_version < G_RAID3_VERSION) { 3013a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Upgrading metadata on %s (v%d->v%d).", 3014a245a548SPawel Jakub Dawidek pp->name, md->md_version, G_RAID3_VERSION); 3015a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 3016a245a548SPawel Jakub Dawidek } 3017a245a548SPawel Jakub Dawidek return (0); 30182d1661a5SPawel Jakub Dawidek } 30192d1661a5SPawel Jakub Dawidek 3020712fe9bdSPawel Jakub Dawidek static void 3021712fe9bdSPawel Jakub Dawidek g_raid3_destroy_delayed(void *arg, int flag) 3022712fe9bdSPawel Jakub Dawidek { 3023712fe9bdSPawel Jakub Dawidek struct g_raid3_softc *sc; 3024712fe9bdSPawel Jakub Dawidek int error; 3025712fe9bdSPawel Jakub Dawidek 3026712fe9bdSPawel Jakub Dawidek if (flag == EV_CANCEL) { 3027712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Destroying canceled."); 3028712fe9bdSPawel Jakub Dawidek return; 3029712fe9bdSPawel Jakub Dawidek } 3030712fe9bdSPawel Jakub Dawidek sc = arg; 3031712fe9bdSPawel Jakub Dawidek g_topology_unlock(); 3032712fe9bdSPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3033712fe9bdSPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) == 0, 3034712fe9bdSPawel Jakub Dawidek ("DESTROY flag set on %s.", sc->sc_name)); 3035712fe9bdSPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROYING) != 0, 3036712fe9bdSPawel Jakub Dawidek ("DESTROYING flag not set on %s.", sc->sc_name)); 3037712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Destroying %s (delayed).", sc->sc_name); 3038712fe9bdSPawel Jakub Dawidek error = g_raid3_destroy(sc, G_RAID3_DESTROY_SOFT); 3039712fe9bdSPawel Jakub Dawidek if (error != 0) { 3040712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot destroy %s.", sc->sc_name); 3041712fe9bdSPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 3042712fe9bdSPawel Jakub Dawidek } 3043712fe9bdSPawel Jakub Dawidek g_topology_lock(); 3044712fe9bdSPawel Jakub Dawidek } 3045712fe9bdSPawel Jakub Dawidek 30462d1661a5SPawel Jakub Dawidek static int 30472d1661a5SPawel Jakub Dawidek g_raid3_access(struct g_provider *pp, int acr, int acw, int ace) 30482d1661a5SPawel Jakub Dawidek { 30492d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 3050712fe9bdSPawel Jakub Dawidek int dcr, dcw, dce, error = 0; 30512d1661a5SPawel Jakub Dawidek 30522d1661a5SPawel Jakub Dawidek g_topology_assert(); 30532d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access request for %s: r%dw%de%d.", pp->name, acr, 30542d1661a5SPawel Jakub Dawidek acw, ace); 30552d1661a5SPawel Jakub Dawidek 30561f7fec3cSPawel Jakub Dawidek sc = pp->geom->softc; 30571f7fec3cSPawel Jakub Dawidek if (sc == NULL && acr <= 0 && acw <= 0 && ace <= 0) 30581f7fec3cSPawel Jakub Dawidek return (0); 30591f7fec3cSPawel Jakub Dawidek KASSERT(sc != NULL, ("NULL softc (provider=%s).", pp->name)); 30601f7fec3cSPawel Jakub Dawidek 30612d1661a5SPawel Jakub Dawidek dcr = pp->acr + acr; 30622d1661a5SPawel Jakub Dawidek dcw = pp->acw + acw; 30632d1661a5SPawel Jakub Dawidek dce = pp->ace + ace; 30642d1661a5SPawel Jakub Dawidek 30653650be51SPawel Jakub Dawidek g_topology_unlock(); 30663650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3067712fe9bdSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0 || 30683650be51SPawel Jakub Dawidek g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < sc->sc_ndisks - 1) { 30693650be51SPawel Jakub Dawidek if (acr > 0 || acw > 0 || ace > 0) 30703650be51SPawel Jakub Dawidek error = ENXIO; 30713650be51SPawel Jakub Dawidek goto end; 30722d1661a5SPawel Jakub Dawidek } 30730962f942SPawel Jakub Dawidek if (dcw == 0 && !sc->sc_idle) 30743650be51SPawel Jakub Dawidek g_raid3_idle(sc, dcw); 3075712fe9bdSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROYING) != 0) { 3076712fe9bdSPawel Jakub Dawidek if (acr > 0 || acw > 0 || ace > 0) { 3077712fe9bdSPawel Jakub Dawidek error = ENXIO; 3078712fe9bdSPawel Jakub Dawidek goto end; 3079712fe9bdSPawel Jakub Dawidek } 3080712fe9bdSPawel Jakub Dawidek if (dcr == 0 && dcw == 0 && dce == 0) { 3081712fe9bdSPawel Jakub Dawidek g_post_event(g_raid3_destroy_delayed, sc, M_WAITOK, 3082712fe9bdSPawel Jakub Dawidek sc, NULL); 3083712fe9bdSPawel Jakub Dawidek } 3084712fe9bdSPawel Jakub Dawidek } 30853650be51SPawel Jakub Dawidek end: 30863650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 30873650be51SPawel Jakub Dawidek g_topology_lock(); 30883650be51SPawel Jakub Dawidek return (error); 30892d1661a5SPawel Jakub Dawidek } 30902d1661a5SPawel Jakub Dawidek 30912d1661a5SPawel Jakub Dawidek static struct g_geom * 30922d1661a5SPawel Jakub Dawidek g_raid3_create(struct g_class *mp, const struct g_raid3_metadata *md) 30932d1661a5SPawel Jakub Dawidek { 30942d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 30952d1661a5SPawel Jakub Dawidek struct g_geom *gp; 30962d1661a5SPawel Jakub Dawidek int error, timeout; 30972d1661a5SPawel Jakub Dawidek u_int n; 30982d1661a5SPawel Jakub Dawidek 30992d1661a5SPawel Jakub Dawidek g_topology_assert(); 31002d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Creating device %s (id=%u).", md->md_name, md->md_id); 31012d1661a5SPawel Jakub Dawidek 31022d1661a5SPawel Jakub Dawidek /* One disk is minimum. */ 31032d1661a5SPawel Jakub Dawidek if (md->md_all < 1) 31042d1661a5SPawel Jakub Dawidek return (NULL); 31052d1661a5SPawel Jakub Dawidek /* 31062d1661a5SPawel Jakub Dawidek * Action geom. 31072d1661a5SPawel Jakub Dawidek */ 31082d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s", md->md_name); 31092d1661a5SPawel Jakub Dawidek sc = malloc(sizeof(*sc), M_RAID3, M_WAITOK | M_ZERO); 31102d1661a5SPawel Jakub Dawidek sc->sc_disks = malloc(sizeof(struct g_raid3_disk) * md->md_all, M_RAID3, 31112d1661a5SPawel Jakub Dawidek M_WAITOK | M_ZERO); 31122d1661a5SPawel Jakub Dawidek gp->start = g_raid3_start; 31132d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 31142d1661a5SPawel Jakub Dawidek gp->access = g_raid3_access; 31152d1661a5SPawel Jakub Dawidek gp->dumpconf = g_raid3_dumpconf; 31162d1661a5SPawel Jakub Dawidek 31172d1661a5SPawel Jakub Dawidek sc->sc_id = md->md_id; 31182d1661a5SPawel Jakub Dawidek sc->sc_mediasize = md->md_mediasize; 31192d1661a5SPawel Jakub Dawidek sc->sc_sectorsize = md->md_sectorsize; 31202d1661a5SPawel Jakub Dawidek sc->sc_ndisks = md->md_all; 3121f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 31222d1661a5SPawel Jakub Dawidek sc->sc_flags = md->md_mflags; 3123a245a548SPawel Jakub Dawidek sc->sc_bump_id = 0; 31240962f942SPawel Jakub Dawidek sc->sc_idle = 1; 312501f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 31260962f942SPawel Jakub Dawidek sc->sc_writes = 0; 3127afd05d74SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 3128afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_softc = sc; 3129afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_no = n; 31302d1661a5SPawel Jakub Dawidek sc->sc_disks[n].d_state = G_RAID3_DISK_STATE_NODISK; 3131afd05d74SPawel Jakub Dawidek } 31323650be51SPawel Jakub Dawidek sx_init(&sc->sc_lock, "graid3:lock"); 31332d1661a5SPawel Jakub Dawidek bioq_init(&sc->sc_queue); 31342d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_queue_mtx, "graid3:queue", NULL, MTX_DEF); 31353650be51SPawel Jakub Dawidek bioq_init(&sc->sc_regular_delayed); 31363650be51SPawel Jakub Dawidek bioq_init(&sc->sc_inflight); 31373650be51SPawel Jakub Dawidek bioq_init(&sc->sc_sync_delayed); 31382d1661a5SPawel Jakub Dawidek TAILQ_INIT(&sc->sc_events); 31392d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_events_mtx, "graid3:events", NULL, MTX_DEF); 31402d1661a5SPawel Jakub Dawidek callout_init(&sc->sc_callout, CALLOUT_MPSAFE); 31412d1661a5SPawel Jakub Dawidek sc->sc_state = G_RAID3_DEVICE_STATE_STARTING; 31422d1661a5SPawel Jakub Dawidek gp->softc = sc; 31432d1661a5SPawel Jakub Dawidek sc->sc_geom = gp; 31442d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 31452d1661a5SPawel Jakub Dawidek /* 31462d1661a5SPawel Jakub Dawidek * Synchronization geom. 31472d1661a5SPawel Jakub Dawidek */ 31482d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s.sync", md->md_name); 31492d1661a5SPawel Jakub Dawidek gp->softc = sc; 31502d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 31512d1661a5SPawel Jakub Dawidek sc->sc_sync.ds_geom = gp; 31523650be51SPawel Jakub Dawidek 3153ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 3154ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_zone = uma_zcreate("gr3:64k", 3155ed940a82SPawel Jakub Dawidek 65536, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3156ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 31573650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_inuse = 0; 31583650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_max = g_raid3_n64k; 31593650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_requested = 31603650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_failed = 0; 3161ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_zone = uma_zcreate("gr3:16k", 3162ed940a82SPawel Jakub Dawidek 16384, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3163ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 31643650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_inuse = 0; 31653650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_max = g_raid3_n16k; 31663650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_requested = 31673650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_failed = 0; 3168ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_zone = uma_zcreate("gr3:4k", 3169ed940a82SPawel Jakub Dawidek 4096, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3170ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 31713650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_inuse = 0; 31723650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_max = g_raid3_n4k; 31733650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_requested = 31743650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_failed = 0; 3175ed940a82SPawel Jakub Dawidek } 31763650be51SPawel Jakub Dawidek 31773745c395SJulian Elischer error = kproc_create(g_raid3_worker, sc, &sc->sc_worker, 0, 0, 31782d1661a5SPawel Jakub Dawidek "g_raid3 %s", md->md_name); 31792d1661a5SPawel Jakub Dawidek if (error != 0) { 31802d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot create kernel thread for %s.", 31812d1661a5SPawel Jakub Dawidek sc->sc_name); 3182ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 31833650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_64K].sz_zone); 31843650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_16K].sz_zone); 31853650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_4K].sz_zone); 3186ed940a82SPawel Jakub Dawidek } 31872d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_sync.ds_geom); 31882d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 31892d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 31903650be51SPawel Jakub Dawidek sx_destroy(&sc->sc_lock); 31912d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_geom); 31922d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 31932d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 31942d1661a5SPawel Jakub Dawidek return (NULL); 31952d1661a5SPawel Jakub Dawidek } 31962d1661a5SPawel Jakub Dawidek 31970cca572eSJohn-Mark Gurney G_RAID3_DEBUG(1, "Device %s created (%u components, id=%u).", 31980cca572eSJohn-Mark Gurney sc->sc_name, sc->sc_ndisks, sc->sc_id); 31992d1661a5SPawel Jakub Dawidek 3200853a10a5SAndrew Thompson sc->sc_rootmount = root_mount_hold("GRAID3"); 32014ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_hold %p", sc->sc_rootmount); 32024ed854e8SPawel Jakub Dawidek 32032d1661a5SPawel Jakub Dawidek /* 32042d1661a5SPawel Jakub Dawidek * Run timeout. 32052d1661a5SPawel Jakub Dawidek */ 32062d1661a5SPawel Jakub Dawidek timeout = atomic_load_acq_int(&g_raid3_timeout); 32072d1661a5SPawel Jakub Dawidek callout_reset(&sc->sc_callout, timeout * hz, g_raid3_go, sc); 32082d1661a5SPawel Jakub Dawidek return (sc->sc_geom); 32092d1661a5SPawel Jakub Dawidek } 32102d1661a5SPawel Jakub Dawidek 32112d1661a5SPawel Jakub Dawidek int 3212712fe9bdSPawel Jakub Dawidek g_raid3_destroy(struct g_raid3_softc *sc, int how) 32132d1661a5SPawel Jakub Dawidek { 32142d1661a5SPawel Jakub Dawidek struct g_provider *pp; 32152d1661a5SPawel Jakub Dawidek 32163650be51SPawel Jakub Dawidek g_topology_assert_not(); 32172d1661a5SPawel Jakub Dawidek if (sc == NULL) 32182d1661a5SPawel Jakub Dawidek return (ENXIO); 32193650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 32203650be51SPawel Jakub Dawidek 32212d1661a5SPawel Jakub Dawidek pp = sc->sc_provider; 32222d1661a5SPawel Jakub Dawidek if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 3223712fe9bdSPawel Jakub Dawidek switch (how) { 3224712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_SOFT: 32252d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 32262d1661a5SPawel Jakub Dawidek "Device %s is still open (r%dw%de%d).", pp->name, 32272d1661a5SPawel Jakub Dawidek pp->acr, pp->acw, pp->ace); 32282d1661a5SPawel Jakub Dawidek return (EBUSY); 3229712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_DELAYED: 3230712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, 3231712fe9bdSPawel Jakub Dawidek "Device %s will be destroyed on last close.", 3232712fe9bdSPawel Jakub Dawidek pp->name); 3233712fe9bdSPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 3234712fe9bdSPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 3235712fe9bdSPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROYING; 3236712fe9bdSPawel Jakub Dawidek return (EBUSY); 3237712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_HARD: 3238712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s is still open, so it " 3239712fe9bdSPawel Jakub Dawidek "can't be definitely removed.", pp->name); 3240712fe9bdSPawel Jakub Dawidek break; 32412d1661a5SPawel Jakub Dawidek } 32422d1661a5SPawel Jakub Dawidek } 32432d1661a5SPawel Jakub Dawidek 324418486a5eSPawel Jakub Dawidek g_topology_lock(); 324518486a5eSPawel Jakub Dawidek if (sc->sc_geom->softc == NULL) { 324618486a5eSPawel Jakub Dawidek g_topology_unlock(); 324718486a5eSPawel Jakub Dawidek return (0); 324818486a5eSPawel Jakub Dawidek } 324918486a5eSPawel Jakub Dawidek sc->sc_geom->softc = NULL; 325018486a5eSPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 325118486a5eSPawel Jakub Dawidek g_topology_unlock(); 325218486a5eSPawel Jakub Dawidek 32532d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 32542d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_WAIT; 32552d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 32563650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 32572d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 32582d1661a5SPawel Jakub Dawidek wakeup(sc); 32592d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 32602d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 32612d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, &sc->sc_worker); 32622d1661a5SPawel Jakub Dawidek while (sc->sc_worker != NULL) 32632d1661a5SPawel Jakub Dawidek tsleep(&sc->sc_worker, PRIBIO, "r3:destroy", hz / 5); 32642d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Woken up %p.", __func__, &sc->sc_worker); 32653650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 32662d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(sc); 32672d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 32682d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 32692d1661a5SPawel Jakub Dawidek return (0); 32702d1661a5SPawel Jakub Dawidek } 32712d1661a5SPawel Jakub Dawidek 32722d1661a5SPawel Jakub Dawidek static void 32732d1661a5SPawel Jakub Dawidek g_raid3_taste_orphan(struct g_consumer *cp) 32742d1661a5SPawel Jakub Dawidek { 32752d1661a5SPawel Jakub Dawidek 32762d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("%s called while tasting %s.", __func__, 32772d1661a5SPawel Jakub Dawidek cp->provider->name)); 32782d1661a5SPawel Jakub Dawidek } 32792d1661a5SPawel Jakub Dawidek 32802d1661a5SPawel Jakub Dawidek static struct g_geom * 32812d1661a5SPawel Jakub Dawidek g_raid3_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) 32822d1661a5SPawel Jakub Dawidek { 32832d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 32842d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 32852d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 32862d1661a5SPawel Jakub Dawidek struct g_geom *gp; 32872d1661a5SPawel Jakub Dawidek int error; 32882d1661a5SPawel Jakub Dawidek 32892d1661a5SPawel Jakub Dawidek g_topology_assert(); 32902d1661a5SPawel Jakub Dawidek g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name); 32912d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Tasting %s.", pp->name); 32922d1661a5SPawel Jakub Dawidek 32932d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "raid3:taste"); 32942d1661a5SPawel Jakub Dawidek /* This orphan function should be never called. */ 32952d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_taste_orphan; 32962d1661a5SPawel Jakub Dawidek cp = g_new_consumer(gp); 32972d1661a5SPawel Jakub Dawidek g_attach(cp, pp); 32982d1661a5SPawel Jakub Dawidek error = g_raid3_read_metadata(cp, &md); 32992d1661a5SPawel Jakub Dawidek g_detach(cp); 33002d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 33012d1661a5SPawel Jakub Dawidek g_destroy_geom(gp); 33022d1661a5SPawel Jakub Dawidek if (error != 0) 33032d1661a5SPawel Jakub Dawidek return (NULL); 33042d1661a5SPawel Jakub Dawidek gp = NULL; 33052d1661a5SPawel Jakub Dawidek 33062d1661a5SPawel Jakub Dawidek if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0) 33072d1661a5SPawel Jakub Dawidek return (NULL); 3308e6890985SPawel Jakub Dawidek if (md.md_provsize != 0 && md.md_provsize != pp->mediasize) 3309e6890985SPawel Jakub Dawidek return (NULL); 33102d1661a5SPawel Jakub Dawidek if (g_raid3_debug >= 2) 33112d1661a5SPawel Jakub Dawidek raid3_metadata_dump(&md); 33122d1661a5SPawel Jakub Dawidek 33132d1661a5SPawel Jakub Dawidek /* 33142d1661a5SPawel Jakub Dawidek * Let's check if device already exists. 33152d1661a5SPawel Jakub Dawidek */ 331645d5e85aSPawel Jakub Dawidek sc = NULL; 33172d1661a5SPawel Jakub Dawidek LIST_FOREACH(gp, &mp->geom, geom) { 33182d1661a5SPawel Jakub Dawidek sc = gp->softc; 33192d1661a5SPawel Jakub Dawidek if (sc == NULL) 33202d1661a5SPawel Jakub Dawidek continue; 33212d1661a5SPawel Jakub Dawidek if (sc->sc_sync.ds_geom == gp) 33222d1661a5SPawel Jakub Dawidek continue; 33232d1661a5SPawel Jakub Dawidek if (strcmp(md.md_name, sc->sc_name) != 0) 33242d1661a5SPawel Jakub Dawidek continue; 33252d1661a5SPawel Jakub Dawidek if (md.md_id != sc->sc_id) { 33262d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s already configured.", 33272d1661a5SPawel Jakub Dawidek sc->sc_name); 33282d1661a5SPawel Jakub Dawidek return (NULL); 33292d1661a5SPawel Jakub Dawidek } 33302d1661a5SPawel Jakub Dawidek break; 33312d1661a5SPawel Jakub Dawidek } 33322d1661a5SPawel Jakub Dawidek if (gp == NULL) { 33332d1661a5SPawel Jakub Dawidek gp = g_raid3_create(mp, &md); 33342d1661a5SPawel Jakub Dawidek if (gp == NULL) { 33352d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot create device %s.", 33362d1661a5SPawel Jakub Dawidek md.md_name); 33372d1661a5SPawel Jakub Dawidek return (NULL); 33382d1661a5SPawel Jakub Dawidek } 33392d1661a5SPawel Jakub Dawidek sc = gp->softc; 33402d1661a5SPawel Jakub Dawidek } 33412d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name); 33423650be51SPawel Jakub Dawidek g_topology_unlock(); 33433650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 33442d1661a5SPawel Jakub Dawidek error = g_raid3_add_disk(sc, pp, &md); 33452d1661a5SPawel Jakub Dawidek if (error != 0) { 33462d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot add disk %s to %s (error=%d).", 33472d1661a5SPawel Jakub Dawidek pp->name, gp->name, error); 33482d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NODISK) == 33492d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 3350712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 33513525bb6bSPawel Jakub Dawidek g_raid3_destroy(sc, G_RAID3_DESTROY_HARD); 33523650be51SPawel Jakub Dawidek g_topology_lock(); 33532d1661a5SPawel Jakub Dawidek return (NULL); 33542d1661a5SPawel Jakub Dawidek } 33553650be51SPawel Jakub Dawidek gp = NULL; 33563650be51SPawel Jakub Dawidek } 33573650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 33583650be51SPawel Jakub Dawidek g_topology_lock(); 33592d1661a5SPawel Jakub Dawidek return (gp); 33602d1661a5SPawel Jakub Dawidek } 33612d1661a5SPawel Jakub Dawidek 33622d1661a5SPawel Jakub Dawidek static int 33632d1661a5SPawel Jakub Dawidek g_raid3_destroy_geom(struct gctl_req *req __unused, struct g_class *mp __unused, 33642d1661a5SPawel Jakub Dawidek struct g_geom *gp) 33652d1661a5SPawel Jakub Dawidek { 33663650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 33673650be51SPawel Jakub Dawidek int error; 33682d1661a5SPawel Jakub Dawidek 33693650be51SPawel Jakub Dawidek g_topology_unlock(); 33703650be51SPawel Jakub Dawidek sc = gp->softc; 33713650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3372712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 33733525bb6bSPawel Jakub Dawidek error = g_raid3_destroy(gp->softc, G_RAID3_DESTROY_SOFT); 33743650be51SPawel Jakub Dawidek if (error != 0) 33753650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 33763650be51SPawel Jakub Dawidek g_topology_lock(); 33773650be51SPawel Jakub Dawidek return (error); 33782d1661a5SPawel Jakub Dawidek } 33792d1661a5SPawel Jakub Dawidek 33802d1661a5SPawel Jakub Dawidek static void 33812d1661a5SPawel Jakub Dawidek g_raid3_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 33822d1661a5SPawel Jakub Dawidek struct g_consumer *cp, struct g_provider *pp) 33832d1661a5SPawel Jakub Dawidek { 33842d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 33852d1661a5SPawel Jakub Dawidek 33862d1661a5SPawel Jakub Dawidek g_topology_assert(); 33872d1661a5SPawel Jakub Dawidek 33882d1661a5SPawel Jakub Dawidek sc = gp->softc; 33892d1661a5SPawel Jakub Dawidek if (sc == NULL) 33902d1661a5SPawel Jakub Dawidek return; 33912d1661a5SPawel Jakub Dawidek /* Skip synchronization geom. */ 33922d1661a5SPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 33932d1661a5SPawel Jakub Dawidek return; 33942d1661a5SPawel Jakub Dawidek if (pp != NULL) { 33952d1661a5SPawel Jakub Dawidek /* Nothing here. */ 33962d1661a5SPawel Jakub Dawidek } else if (cp != NULL) { 33972d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 33982d1661a5SPawel Jakub Dawidek 33992d1661a5SPawel Jakub Dawidek disk = cp->private; 34002d1661a5SPawel Jakub Dawidek if (disk == NULL) 34012d1661a5SPawel Jakub Dawidek return; 34023650be51SPawel Jakub Dawidek g_topology_unlock(); 34033650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 34042d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Type>", indent); 34052d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 34062d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "PARITY"); 34072d1661a5SPawel Jakub Dawidek else 34082d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "DATA"); 34092d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Type>\n"); 34102d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Number>%u</Number>\n", indent, 34112d1661a5SPawel Jakub Dawidek (u_int)disk->d_no); 34122d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 34132d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Synchronized>", indent); 34143650be51SPawel Jakub Dawidek if (disk->d_sync.ds_offset == 0) 34152d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "0%%"); 34162d1661a5SPawel Jakub Dawidek else { 34172d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%u%%", 34183650be51SPawel Jakub Dawidek (u_int)((disk->d_sync.ds_offset * 100) / 3419c0d68b6eSPawel Jakub Dawidek (sc->sc_mediasize / (sc->sc_ndisks - 1)))); 34202d1661a5SPawel Jakub Dawidek } 34212d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Synchronized>\n"); 34222d1661a5SPawel Jakub Dawidek } 34232d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, 34242d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid); 3425a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, disk->d_genid); 34262d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 34272d1661a5SPawel Jakub Dawidek if (disk->d_flags == 0) 34282d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 34292d1661a5SPawel Jakub Dawidek else { 34302d1661a5SPawel Jakub Dawidek int first = 1; 34312d1661a5SPawel Jakub Dawidek 34322d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 34332d1661a5SPawel Jakub Dawidek if ((disk->d_flags & (flag)) != 0) { \ 34342d1661a5SPawel Jakub Dawidek if (!first) \ 34352d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 34362d1661a5SPawel Jakub Dawidek else \ 34372d1661a5SPawel Jakub Dawidek first = 0; \ 34382d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 34392d1661a5SPawel Jakub Dawidek } \ 34402d1661a5SPawel Jakub Dawidek } while (0) 34412d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_DIRTY, "DIRTY"); 34422d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_HARDCODED, "HARDCODED"); 34432d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_SYNCHRONIZING, 34442d1661a5SPawel Jakub Dawidek "SYNCHRONIZING"); 34452d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_FORCE_SYNC, "FORCE_SYNC"); 34463aae74ecSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_BROKEN, "BROKEN"); 34472d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 34482d1661a5SPawel Jakub Dawidek } 34492d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 34502d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 34512d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state)); 34523650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 34533650be51SPawel Jakub Dawidek g_topology_lock(); 34542d1661a5SPawel Jakub Dawidek } else { 34553650be51SPawel Jakub Dawidek g_topology_unlock(); 34563650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3457ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 3458ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3459ed940a82SPawel Jakub Dawidek "%s<Zone4kRequested>%u</Zone4kRequested>\n", indent, 3460ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_requested); 3461ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3462ed940a82SPawel Jakub Dawidek "%s<Zone4kFailed>%u</Zone4kFailed>\n", indent, 3463ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_failed); 3464ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3465ed940a82SPawel Jakub Dawidek "%s<Zone16kRequested>%u</Zone16kRequested>\n", indent, 3466ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_requested); 3467ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3468ed940a82SPawel Jakub Dawidek "%s<Zone16kFailed>%u</Zone16kFailed>\n", indent, 3469ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_failed); 3470ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3471ed940a82SPawel Jakub Dawidek "%s<Zone64kRequested>%u</Zone64kRequested>\n", indent, 3472ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_requested); 3473ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3474ed940a82SPawel Jakub Dawidek "%s<Zone64kFailed>%u</Zone64kFailed>\n", indent, 3475ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_failed); 3476ed940a82SPawel Jakub Dawidek } 34772d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id); 34782d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, sc->sc_syncid); 3479a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, sc->sc_genid); 34802d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 34812d1661a5SPawel Jakub Dawidek if (sc->sc_flags == 0) 34822d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 34832d1661a5SPawel Jakub Dawidek else { 34842d1661a5SPawel Jakub Dawidek int first = 1; 34852d1661a5SPawel Jakub Dawidek 34862d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 34872d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & (flag)) != 0) { \ 34882d1661a5SPawel Jakub Dawidek if (!first) \ 34892d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 34902d1661a5SPawel Jakub Dawidek else \ 34912d1661a5SPawel Jakub Dawidek first = 0; \ 34922d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 34932d1661a5SPawel Jakub Dawidek } \ 34942d1661a5SPawel Jakub Dawidek } while (0) 3495501250baSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_NOFAILSYNC, "NOFAILSYNC"); 34962d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_NOAUTOSYNC, "NOAUTOSYNC"); 3497f5a2f7feSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_ROUND_ROBIN, 3498f5a2f7feSPawel Jakub Dawidek "ROUND-ROBIN"); 3499dba915cfSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_VERIFY, "VERIFY"); 35002d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 35012d1661a5SPawel Jakub Dawidek } 35022d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 35032d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Components>%u</Components>\n", indent, 35042d1661a5SPawel Jakub Dawidek sc->sc_ndisks); 350528b31df7SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 350628b31df7SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state)); 35073650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 35083650be51SPawel Jakub Dawidek g_topology_lock(); 35092d1661a5SPawel Jakub Dawidek } 35102d1661a5SPawel Jakub Dawidek } 35112d1661a5SPawel Jakub Dawidek 35129da3072cSPawel Jakub Dawidek static void 35133650be51SPawel Jakub Dawidek g_raid3_shutdown_pre_sync(void *arg, int howto) 35149da3072cSPawel Jakub Dawidek { 35159da3072cSPawel Jakub Dawidek struct g_class *mp; 35169da3072cSPawel Jakub Dawidek struct g_geom *gp, *gp2; 35173650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 3518712fe9bdSPawel Jakub Dawidek int error; 35199da3072cSPawel Jakub Dawidek 35209da3072cSPawel Jakub Dawidek mp = arg; 3521fdc3c6ceSPawel Jakub Dawidek DROP_GIANT(); 35229da3072cSPawel Jakub Dawidek g_topology_lock(); 35239da3072cSPawel Jakub Dawidek LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) { 35243650be51SPawel Jakub Dawidek if ((sc = gp->softc) == NULL) 35259da3072cSPawel Jakub Dawidek continue; 3526712fe9bdSPawel Jakub Dawidek /* Skip synchronization geom. */ 3527712fe9bdSPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 3528712fe9bdSPawel Jakub Dawidek continue; 35293650be51SPawel Jakub Dawidek g_topology_unlock(); 35303650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3531712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 3532712fe9bdSPawel Jakub Dawidek error = g_raid3_destroy(sc, G_RAID3_DESTROY_DELAYED); 3533712fe9bdSPawel Jakub Dawidek if (error != 0) 35343650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 35353650be51SPawel Jakub Dawidek g_topology_lock(); 35363650be51SPawel Jakub Dawidek } 35373650be51SPawel Jakub Dawidek g_topology_unlock(); 35383650be51SPawel Jakub Dawidek PICKUP_GIANT(); 35393650be51SPawel Jakub Dawidek } 35403650be51SPawel Jakub Dawidek 35413650be51SPawel Jakub Dawidek static void 35429da3072cSPawel Jakub Dawidek g_raid3_init(struct g_class *mp) 35439da3072cSPawel Jakub Dawidek { 35449da3072cSPawel Jakub Dawidek 35453650be51SPawel Jakub Dawidek g_raid3_pre_sync = EVENTHANDLER_REGISTER(shutdown_pre_sync, 35463650be51SPawel Jakub Dawidek g_raid3_shutdown_pre_sync, mp, SHUTDOWN_PRI_FIRST); 3547712fe9bdSPawel Jakub Dawidek if (g_raid3_pre_sync == NULL) 35489da3072cSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Warning! Cannot register shutdown event."); 35499da3072cSPawel Jakub Dawidek } 35509da3072cSPawel Jakub Dawidek 35519da3072cSPawel Jakub Dawidek static void 35529da3072cSPawel Jakub Dawidek g_raid3_fini(struct g_class *mp) 35539da3072cSPawel Jakub Dawidek { 35549da3072cSPawel Jakub Dawidek 35553650be51SPawel Jakub Dawidek if (g_raid3_pre_sync != NULL) 35563650be51SPawel Jakub Dawidek EVENTHANDLER_DEREGISTER(shutdown_pre_sync, g_raid3_pre_sync); 35579da3072cSPawel Jakub Dawidek } 35589da3072cSPawel Jakub Dawidek 35592d1661a5SPawel Jakub Dawidek DECLARE_GEOM_CLASS(g_raid3_class, g_raid3); 3560