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; 186ed940a82SPawel Jakub Dawidek 187ed940a82SPawel Jakub Dawidek if (g_raid3_use_malloc) 188ed940a82SPawel Jakub Dawidek ptr = malloc(size, M_RAID3, flags); 189ed940a82SPawel Jakub Dawidek else { 190ed940a82SPawel Jakub Dawidek ptr = uma_zalloc_arg(sc->sc_zones[g_raid3_zone(size)].sz_zone, 191ed940a82SPawel Jakub Dawidek &sc->sc_zones[g_raid3_zone(size)], flags); 192ed940a82SPawel Jakub Dawidek sc->sc_zones[g_raid3_zone(size)].sz_requested++; 193ed940a82SPawel Jakub Dawidek if (ptr == NULL) 194ed940a82SPawel Jakub Dawidek sc->sc_zones[g_raid3_zone(size)].sz_failed++; 195ed940a82SPawel Jakub Dawidek } 196ed940a82SPawel Jakub Dawidek return (ptr); 197ed940a82SPawel Jakub Dawidek } 198ed940a82SPawel Jakub Dawidek 199ed940a82SPawel Jakub Dawidek static void 200ed940a82SPawel Jakub Dawidek g_raid3_free(struct g_raid3_softc *sc, void *ptr, size_t size) 201ed940a82SPawel Jakub Dawidek { 202ed940a82SPawel Jakub Dawidek 203ed940a82SPawel Jakub Dawidek if (g_raid3_use_malloc) 204ed940a82SPawel Jakub Dawidek free(ptr, M_RAID3); 205ed940a82SPawel Jakub Dawidek else { 206ed940a82SPawel Jakub Dawidek uma_zfree_arg(sc->sc_zones[g_raid3_zone(size)].sz_zone, 207ed940a82SPawel Jakub Dawidek ptr, &sc->sc_zones[g_raid3_zone(size)]); 208ed940a82SPawel Jakub Dawidek } 209ed940a82SPawel Jakub Dawidek } 210ed940a82SPawel Jakub Dawidek 2113650be51SPawel Jakub Dawidek static int 2123650be51SPawel Jakub Dawidek g_raid3_uma_ctor(void *mem, int size, void *arg, int flags) 2133650be51SPawel Jakub Dawidek { 2143650be51SPawel Jakub Dawidek struct g_raid3_zone *sz = arg; 2153650be51SPawel Jakub Dawidek 2160d14fae5SPawel Jakub Dawidek if (sz->sz_max > 0 && sz->sz_inuse == sz->sz_max) 2173650be51SPawel Jakub Dawidek return (ENOMEM); 2183650be51SPawel Jakub Dawidek sz->sz_inuse++; 2193650be51SPawel Jakub Dawidek return (0); 2203650be51SPawel Jakub Dawidek } 2213650be51SPawel Jakub Dawidek 2223650be51SPawel Jakub Dawidek static void 2233650be51SPawel Jakub Dawidek g_raid3_uma_dtor(void *mem, int size, void *arg) 2243650be51SPawel Jakub Dawidek { 2253650be51SPawel Jakub Dawidek struct g_raid3_zone *sz = arg; 2263650be51SPawel Jakub Dawidek 2273650be51SPawel Jakub Dawidek sz->sz_inuse--; 2283650be51SPawel Jakub Dawidek } 2293650be51SPawel Jakub Dawidek 2302d1661a5SPawel Jakub Dawidek #define g_raid3_xor(src1, src2, dst, size) \ 2312d1661a5SPawel Jakub Dawidek _g_raid3_xor((uint64_t *)(src1), (uint64_t *)(src2), \ 2322d1661a5SPawel Jakub Dawidek (uint64_t *)(dst), (size_t)size) 2332d1661a5SPawel Jakub Dawidek static void 2342d1661a5SPawel Jakub Dawidek _g_raid3_xor(uint64_t *src1, uint64_t *src2, uint64_t *dst, size_t size) 2352d1661a5SPawel Jakub Dawidek { 2362d1661a5SPawel Jakub Dawidek 2372d1661a5SPawel Jakub Dawidek KASSERT((size % 128) == 0, ("Invalid size: %zu.", size)); 2382d1661a5SPawel Jakub Dawidek for (; size > 0; size -= 128) { 2392d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2402d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2412d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2422d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 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 } 2562d1661a5SPawel Jakub Dawidek } 2572d1661a5SPawel Jakub Dawidek 258dba915cfSPawel Jakub Dawidek static int 259dba915cfSPawel Jakub Dawidek g_raid3_is_zero(struct bio *bp) 260dba915cfSPawel Jakub Dawidek { 261dba915cfSPawel Jakub Dawidek static const uint64_t zeros[] = { 262dba915cfSPawel Jakub Dawidek 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 263dba915cfSPawel Jakub Dawidek }; 264dba915cfSPawel Jakub Dawidek u_char *addr; 265dba915cfSPawel Jakub Dawidek ssize_t size; 266dba915cfSPawel Jakub Dawidek 267dba915cfSPawel Jakub Dawidek size = bp->bio_length; 268dba915cfSPawel Jakub Dawidek addr = (u_char *)bp->bio_data; 269dba915cfSPawel Jakub Dawidek for (; size > 0; size -= sizeof(zeros), addr += sizeof(zeros)) { 270dba915cfSPawel Jakub Dawidek if (bcmp(addr, zeros, sizeof(zeros)) != 0) 271dba915cfSPawel Jakub Dawidek return (0); 272dba915cfSPawel Jakub Dawidek } 273dba915cfSPawel Jakub Dawidek return (1); 274dba915cfSPawel Jakub Dawidek } 275dba915cfSPawel Jakub Dawidek 2762d1661a5SPawel Jakub Dawidek /* 2772d1661a5SPawel Jakub Dawidek * --- Events handling functions --- 2782d1661a5SPawel Jakub Dawidek * Events in geom_raid3 are used to maintain disks and device status 2792d1661a5SPawel Jakub Dawidek * from one thread to simplify locking. 2802d1661a5SPawel Jakub Dawidek */ 2812d1661a5SPawel Jakub Dawidek static void 2822d1661a5SPawel Jakub Dawidek g_raid3_event_free(struct g_raid3_event *ep) 2832d1661a5SPawel Jakub Dawidek { 2842d1661a5SPawel Jakub Dawidek 2852d1661a5SPawel Jakub Dawidek free(ep, M_RAID3); 2862d1661a5SPawel Jakub Dawidek } 2872d1661a5SPawel Jakub Dawidek 2882d1661a5SPawel Jakub Dawidek int 2892d1661a5SPawel Jakub Dawidek g_raid3_event_send(void *arg, int state, int flags) 2902d1661a5SPawel Jakub Dawidek { 2912d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 2922d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 2932d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 2942d1661a5SPawel Jakub Dawidek int error; 2952d1661a5SPawel Jakub Dawidek 2962d1661a5SPawel Jakub Dawidek ep = malloc(sizeof(*ep), M_RAID3, M_WAITOK); 2972d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sending event %p.", __func__, ep); 2982d1661a5SPawel Jakub Dawidek if ((flags & G_RAID3_EVENT_DEVICE) != 0) { 2992d1661a5SPawel Jakub Dawidek disk = NULL; 3002d1661a5SPawel Jakub Dawidek sc = arg; 3012d1661a5SPawel Jakub Dawidek } else { 3022d1661a5SPawel Jakub Dawidek disk = arg; 3032d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 3042d1661a5SPawel Jakub Dawidek } 3052d1661a5SPawel Jakub Dawidek ep->e_disk = disk; 3062d1661a5SPawel Jakub Dawidek ep->e_state = state; 3072d1661a5SPawel Jakub Dawidek ep->e_flags = flags; 3082d1661a5SPawel Jakub Dawidek ep->e_error = 0; 3092d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3102d1661a5SPawel Jakub Dawidek TAILQ_INSERT_TAIL(&sc->sc_events, ep, e_next); 3112d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3122d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 3132d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 3142d1661a5SPawel Jakub Dawidek wakeup(sc); 3152d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 3162d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 3172d1661a5SPawel Jakub Dawidek if ((flags & G_RAID3_EVENT_DONTWAIT) != 0) 3182d1661a5SPawel Jakub Dawidek return (0); 3193650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 3202d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, ep); 3213650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 3222d1661a5SPawel Jakub Dawidek while ((ep->e_flags & G_RAID3_EVENT_DONE) == 0) { 3232d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3242d1661a5SPawel Jakub Dawidek MSLEEP(ep, &sc->sc_events_mtx, PRIBIO | PDROP, "r3:event", 3252d1661a5SPawel Jakub Dawidek hz * 5); 3262d1661a5SPawel Jakub Dawidek } 3272d1661a5SPawel Jakub Dawidek error = ep->e_error; 3282d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 3293650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3302d1661a5SPawel Jakub Dawidek return (error); 3312d1661a5SPawel Jakub Dawidek } 3322d1661a5SPawel Jakub Dawidek 3332d1661a5SPawel Jakub Dawidek static struct g_raid3_event * 3342d1661a5SPawel Jakub Dawidek g_raid3_event_get(struct g_raid3_softc *sc) 3352d1661a5SPawel Jakub Dawidek { 3362d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 3372d1661a5SPawel Jakub Dawidek 3382d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3392d1661a5SPawel Jakub Dawidek ep = TAILQ_FIRST(&sc->sc_events); 3402d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3412d1661a5SPawel Jakub Dawidek return (ep); 3422d1661a5SPawel Jakub Dawidek } 3432d1661a5SPawel Jakub Dawidek 3442d1661a5SPawel Jakub Dawidek static void 345d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(struct g_raid3_softc *sc, struct g_raid3_event *ep) 346d97d5ee9SPawel Jakub Dawidek { 347d97d5ee9SPawel Jakub Dawidek 348d97d5ee9SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 349d97d5ee9SPawel Jakub Dawidek TAILQ_REMOVE(&sc->sc_events, ep, e_next); 350d97d5ee9SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 351d97d5ee9SPawel Jakub Dawidek } 352d97d5ee9SPawel Jakub Dawidek 353d97d5ee9SPawel Jakub Dawidek static void 3542d1661a5SPawel Jakub Dawidek g_raid3_event_cancel(struct g_raid3_disk *disk) 3552d1661a5SPawel Jakub Dawidek { 3562d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 3572d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep, *tmpep; 3582d1661a5SPawel Jakub Dawidek 3592d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 3603650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 3613650be51SPawel Jakub Dawidek 3622d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3632d1661a5SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(ep, &sc->sc_events, e_next, tmpep) { 3642d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) 3652d1661a5SPawel Jakub Dawidek continue; 3662d1661a5SPawel Jakub Dawidek if (ep->e_disk != disk) 3672d1661a5SPawel Jakub Dawidek continue; 3682d1661a5SPawel Jakub Dawidek TAILQ_REMOVE(&sc->sc_events, ep, e_next); 3692d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) 3702d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 3712d1661a5SPawel Jakub Dawidek else { 3722d1661a5SPawel Jakub Dawidek ep->e_error = ECANCELED; 3732d1661a5SPawel Jakub Dawidek wakeup(ep); 3742d1661a5SPawel Jakub Dawidek } 3752d1661a5SPawel Jakub Dawidek } 3762d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3772d1661a5SPawel Jakub Dawidek } 3782d1661a5SPawel Jakub Dawidek 3792d1661a5SPawel Jakub Dawidek /* 3802d1661a5SPawel Jakub Dawidek * Return the number of disks in the given state. 3812d1661a5SPawel Jakub Dawidek * If state is equal to -1, count all connected disks. 3822d1661a5SPawel Jakub Dawidek */ 3832d1661a5SPawel Jakub Dawidek u_int 3842d1661a5SPawel Jakub Dawidek g_raid3_ndisks(struct g_raid3_softc *sc, int state) 3852d1661a5SPawel Jakub Dawidek { 3862d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 387fa6a7837SDavid E. O'Brien u_int n, ndisks; 3882d1661a5SPawel Jakub Dawidek 3893650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 3903650be51SPawel Jakub Dawidek 391fa6a7837SDavid E. O'Brien for (n = ndisks = 0; n < sc->sc_ndisks; n++) { 3922d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 3932d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 3942d1661a5SPawel Jakub Dawidek continue; 3952d1661a5SPawel Jakub Dawidek if (state == -1 || disk->d_state == state) 3962d1661a5SPawel Jakub Dawidek ndisks++; 3972d1661a5SPawel Jakub Dawidek } 3982d1661a5SPawel Jakub Dawidek return (ndisks); 3992d1661a5SPawel Jakub Dawidek } 4002d1661a5SPawel Jakub Dawidek 4012d1661a5SPawel Jakub Dawidek static u_int 4022d1661a5SPawel Jakub Dawidek g_raid3_nrequests(struct g_raid3_softc *sc, struct g_consumer *cp) 4032d1661a5SPawel Jakub Dawidek { 4042d1661a5SPawel Jakub Dawidek struct bio *bp; 4052d1661a5SPawel Jakub Dawidek u_int nreqs = 0; 4062d1661a5SPawel Jakub Dawidek 4072d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 4082d1661a5SPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 4092d1661a5SPawel Jakub Dawidek if (bp->bio_from == cp) 4102d1661a5SPawel Jakub Dawidek nreqs++; 4112d1661a5SPawel Jakub Dawidek } 4122d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 4132d1661a5SPawel Jakub Dawidek return (nreqs); 4142d1661a5SPawel Jakub Dawidek } 4152d1661a5SPawel Jakub Dawidek 4162d1661a5SPawel Jakub Dawidek static int 4172d1661a5SPawel Jakub Dawidek g_raid3_is_busy(struct g_raid3_softc *sc, struct g_consumer *cp) 4182d1661a5SPawel Jakub Dawidek { 4192d1661a5SPawel Jakub Dawidek 42079e61493SPawel Jakub Dawidek if (cp->index > 0) { 4212d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, 4222d1661a5SPawel Jakub Dawidek "I/O requests for %s exist, can't destroy it now.", 4232d1661a5SPawel Jakub Dawidek cp->provider->name); 4242d1661a5SPawel Jakub Dawidek return (1); 4252d1661a5SPawel Jakub Dawidek } 4262d1661a5SPawel Jakub Dawidek if (g_raid3_nrequests(sc, cp) > 0) { 4272d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, 4282d1661a5SPawel Jakub Dawidek "I/O requests for %s in queue, can't destroy it now.", 4292d1661a5SPawel Jakub Dawidek cp->provider->name); 4302d1661a5SPawel Jakub Dawidek return (1); 4312d1661a5SPawel Jakub Dawidek } 4322d1661a5SPawel Jakub Dawidek return (0); 4332d1661a5SPawel Jakub Dawidek } 4342d1661a5SPawel Jakub Dawidek 4352d1661a5SPawel Jakub Dawidek static void 436d97d5ee9SPawel Jakub Dawidek g_raid3_destroy_consumer(void *arg, int flags __unused) 437d97d5ee9SPawel Jakub Dawidek { 438d97d5ee9SPawel Jakub Dawidek struct g_consumer *cp; 439d97d5ee9SPawel Jakub Dawidek 4403650be51SPawel Jakub Dawidek g_topology_assert(); 4413650be51SPawel Jakub Dawidek 442d97d5ee9SPawel Jakub Dawidek cp = arg; 443d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Consumer %s destroyed.", cp->provider->name); 444d97d5ee9SPawel Jakub Dawidek g_detach(cp); 445d97d5ee9SPawel Jakub Dawidek g_destroy_consumer(cp); 446d97d5ee9SPawel Jakub Dawidek } 447d97d5ee9SPawel Jakub Dawidek 448d97d5ee9SPawel Jakub Dawidek static void 4492d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(struct g_raid3_softc *sc, struct g_consumer *cp) 4502d1661a5SPawel Jakub Dawidek { 451d97d5ee9SPawel Jakub Dawidek struct g_provider *pp; 452d97d5ee9SPawel Jakub Dawidek int retaste_wait; 4532d1661a5SPawel Jakub Dawidek 4542d1661a5SPawel Jakub Dawidek g_topology_assert(); 4552d1661a5SPawel Jakub Dawidek 4562d1661a5SPawel Jakub Dawidek cp->private = NULL; 4572d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 4582d1661a5SPawel Jakub Dawidek return; 4592d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Consumer %s destroyed.", cp->provider->name); 460d97d5ee9SPawel Jakub Dawidek pp = cp->provider; 461d97d5ee9SPawel Jakub Dawidek retaste_wait = 0; 462d97d5ee9SPawel Jakub Dawidek if (cp->acw == 1) { 463d97d5ee9SPawel Jakub Dawidek if ((pp->geom->flags & G_GEOM_WITHER) == 0) 464d97d5ee9SPawel Jakub Dawidek retaste_wait = 1; 465d97d5ee9SPawel Jakub Dawidek } 466d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access %s r%dw%de%d = %d", pp->name, -cp->acr, 467d97d5ee9SPawel Jakub Dawidek -cp->acw, -cp->ace, 0); 468d97d5ee9SPawel Jakub Dawidek if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0) 469d97d5ee9SPawel Jakub Dawidek g_access(cp, -cp->acr, -cp->acw, -cp->ace); 470d97d5ee9SPawel Jakub Dawidek if (retaste_wait) { 471d97d5ee9SPawel Jakub Dawidek /* 472d97d5ee9SPawel Jakub Dawidek * After retaste event was send (inside g_access()), we can send 473d97d5ee9SPawel Jakub Dawidek * event to detach and destroy consumer. 474d97d5ee9SPawel Jakub Dawidek * A class, which has consumer to the given provider connected 475d97d5ee9SPawel Jakub Dawidek * will not receive retaste event for the provider. 476d97d5ee9SPawel Jakub Dawidek * This is the way how I ignore retaste events when I close 477d97d5ee9SPawel Jakub Dawidek * consumers opened for write: I detach and destroy consumer 478d97d5ee9SPawel Jakub Dawidek * after retaste event is sent. 479d97d5ee9SPawel Jakub Dawidek */ 480d97d5ee9SPawel Jakub Dawidek g_post_event(g_raid3_destroy_consumer, cp, M_WAITOK, NULL); 481d97d5ee9SPawel Jakub Dawidek return; 482d97d5ee9SPawel Jakub Dawidek } 483d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Consumer %s destroyed.", pp->name); 4842d1661a5SPawel Jakub Dawidek g_detach(cp); 4852d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 4862d1661a5SPawel Jakub Dawidek } 4872d1661a5SPawel Jakub Dawidek 4882d1661a5SPawel Jakub Dawidek static int 4892d1661a5SPawel Jakub Dawidek g_raid3_connect_disk(struct g_raid3_disk *disk, struct g_provider *pp) 4902d1661a5SPawel Jakub Dawidek { 49134cb1517SPawel Jakub Dawidek struct g_consumer *cp; 4922d1661a5SPawel Jakub Dawidek int error; 4932d1661a5SPawel Jakub Dawidek 4943650be51SPawel Jakub Dawidek g_topology_assert_not(); 4952d1661a5SPawel Jakub Dawidek KASSERT(disk->d_consumer == NULL, 4962d1661a5SPawel Jakub Dawidek ("Disk already connected (device %s).", disk->d_softc->sc_name)); 4972d1661a5SPawel Jakub Dawidek 4983650be51SPawel Jakub Dawidek g_topology_lock(); 49934cb1517SPawel Jakub Dawidek cp = g_new_consumer(disk->d_softc->sc_geom); 50034cb1517SPawel Jakub Dawidek error = g_attach(cp, pp); 501d97d5ee9SPawel Jakub Dawidek if (error != 0) { 50234cb1517SPawel Jakub Dawidek g_destroy_consumer(cp); 5033650be51SPawel Jakub Dawidek g_topology_unlock(); 50434cb1517SPawel Jakub Dawidek return (error); 50534cb1517SPawel Jakub Dawidek } 50634cb1517SPawel Jakub Dawidek error = g_access(cp, 1, 1, 1); 5073650be51SPawel Jakub Dawidek g_topology_unlock(); 50834cb1517SPawel Jakub Dawidek if (error != 0) { 50934cb1517SPawel Jakub Dawidek g_detach(cp); 51034cb1517SPawel Jakub Dawidek g_destroy_consumer(cp); 511d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot open consumer %s (error=%d).", 512d97d5ee9SPawel Jakub Dawidek pp->name, error); 513d97d5ee9SPawel Jakub Dawidek return (error); 514d97d5ee9SPawel Jakub Dawidek } 51534cb1517SPawel Jakub Dawidek disk->d_consumer = cp; 51634cb1517SPawel Jakub Dawidek disk->d_consumer->private = disk; 51734cb1517SPawel Jakub Dawidek disk->d_consumer->index = 0; 5182d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Disk %s connected.", g_raid3_get_diskname(disk)); 5192d1661a5SPawel Jakub Dawidek return (0); 5202d1661a5SPawel Jakub Dawidek } 5212d1661a5SPawel Jakub Dawidek 5222d1661a5SPawel Jakub Dawidek static void 5232d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(struct g_raid3_softc *sc, struct g_consumer *cp) 5242d1661a5SPawel Jakub Dawidek { 5252d1661a5SPawel Jakub Dawidek 5262d1661a5SPawel Jakub Dawidek g_topology_assert(); 5272d1661a5SPawel Jakub Dawidek 5282d1661a5SPawel Jakub Dawidek if (cp == NULL) 5292d1661a5SPawel Jakub Dawidek return; 530d97d5ee9SPawel Jakub Dawidek if (cp->provider != NULL) 5312d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cp); 532d97d5ee9SPawel Jakub Dawidek else 5332d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 5342d1661a5SPawel Jakub Dawidek } 5352d1661a5SPawel Jakub Dawidek 5362d1661a5SPawel Jakub Dawidek /* 5372d1661a5SPawel Jakub Dawidek * Initialize disk. This means allocate memory, create consumer, attach it 5382d1661a5SPawel Jakub Dawidek * to the provider and open access (r1w1e1) to it. 5392d1661a5SPawel Jakub Dawidek */ 5402d1661a5SPawel Jakub Dawidek static struct g_raid3_disk * 5412d1661a5SPawel Jakub Dawidek g_raid3_init_disk(struct g_raid3_softc *sc, struct g_provider *pp, 5422d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md, int *errorp) 5432d1661a5SPawel Jakub Dawidek { 5442d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 5452d1661a5SPawel Jakub Dawidek int error; 5462d1661a5SPawel Jakub Dawidek 5472d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[md->md_no]; 5482d1661a5SPawel Jakub Dawidek error = g_raid3_connect_disk(disk, pp); 54934cb1517SPawel Jakub Dawidek if (error != 0) { 55034cb1517SPawel Jakub Dawidek if (errorp != NULL) 55134cb1517SPawel Jakub Dawidek *errorp = error; 55234cb1517SPawel Jakub Dawidek return (NULL); 55334cb1517SPawel Jakub Dawidek } 5542d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NONE; 5552d1661a5SPawel Jakub Dawidek disk->d_flags = md->md_dflags; 5562d1661a5SPawel Jakub Dawidek if (md->md_provider[0] != '\0') 5572d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_HARDCODED; 5582d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 5592d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = md->md_sync_offset; 5602d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = md->md_sync_offset; 561a245a548SPawel Jakub Dawidek disk->d_genid = md->md_genid; 5622d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = md->md_syncid; 5632d1661a5SPawel Jakub Dawidek if (errorp != NULL) 5642d1661a5SPawel Jakub Dawidek *errorp = 0; 5652d1661a5SPawel Jakub Dawidek return (disk); 5662d1661a5SPawel Jakub Dawidek } 5672d1661a5SPawel Jakub Dawidek 5682d1661a5SPawel Jakub Dawidek static void 5692d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(struct g_raid3_disk *disk) 5702d1661a5SPawel Jakub Dawidek { 5712d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 5722d1661a5SPawel Jakub Dawidek 5733650be51SPawel Jakub Dawidek g_topology_assert_not(); 5743650be51SPawel Jakub Dawidek sc = disk->d_softc; 5753650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 5762d1661a5SPawel Jakub Dawidek 5772d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 5782d1661a5SPawel Jakub Dawidek return; 5792d1661a5SPawel Jakub Dawidek g_raid3_event_cancel(disk); 5802d1661a5SPawel Jakub Dawidek switch (disk->d_state) { 5812d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 5822d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 5832d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 5842d1661a5SPawel Jakub Dawidek /* FALLTHROUGH */ 5852d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 5862d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 5872d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 5883650be51SPawel Jakub Dawidek g_topology_lock(); 5892d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, disk->d_consumer); 5903650be51SPawel Jakub Dawidek g_topology_unlock(); 5912d1661a5SPawel Jakub Dawidek disk->d_consumer = NULL; 5922d1661a5SPawel Jakub Dawidek break; 5932d1661a5SPawel Jakub Dawidek default: 5942d1661a5SPawel Jakub Dawidek KASSERT(0 == 1, ("Wrong disk state (%s, %s).", 5952d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 5962d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 5972d1661a5SPawel Jakub Dawidek } 5982d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NODISK; 5992d1661a5SPawel Jakub Dawidek } 6002d1661a5SPawel Jakub Dawidek 6012d1661a5SPawel Jakub Dawidek static void 6022d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(struct g_raid3_softc *sc) 6032d1661a5SPawel Jakub Dawidek { 6042d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 6059da3072cSPawel Jakub Dawidek struct g_raid3_disk *disk; 6062d1661a5SPawel Jakub Dawidek struct g_geom *gp; 6072d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 6082d1661a5SPawel Jakub Dawidek u_int n; 6092d1661a5SPawel Jakub Dawidek 6103650be51SPawel Jakub Dawidek g_topology_assert_not(); 6113650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 6122d1661a5SPawel Jakub Dawidek 6132d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 6142d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 6152d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 6169da3072cSPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 6179da3072cSPawel Jakub Dawidek disk = &sc->sc_disks[n]; 618d97d5ee9SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_NODISK) { 6199da3072cSPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 6209da3072cSPawel Jakub Dawidek g_raid3_update_metadata(disk); 6219da3072cSPawel Jakub Dawidek g_raid3_destroy_disk(disk); 6229da3072cSPawel Jakub Dawidek } 623d97d5ee9SPawel Jakub Dawidek } 6242d1661a5SPawel Jakub Dawidek while ((ep = g_raid3_event_get(sc)) != NULL) { 625d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 6262d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) 6272d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 6282d1661a5SPawel Jakub Dawidek else { 6292d1661a5SPawel Jakub Dawidek ep->e_error = ECANCELED; 6302d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 6312d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, ep); 6322d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 6332d1661a5SPawel Jakub Dawidek wakeup(ep); 6342d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 6352d1661a5SPawel Jakub Dawidek } 6362d1661a5SPawel Jakub Dawidek } 6372d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 6382d1661a5SPawel Jakub Dawidek cp = LIST_FIRST(&sc->sc_sync.ds_geom->consumer); 6393650be51SPawel Jakub Dawidek g_topology_lock(); 6402d1661a5SPawel Jakub Dawidek if (cp != NULL) 6412d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, cp); 6422d1661a5SPawel Jakub Dawidek g_wither_geom(sc->sc_sync.ds_geom, ENXIO); 6432d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s destroyed.", gp->name); 6442d1661a5SPawel Jakub Dawidek g_wither_geom(gp, ENXIO); 6453650be51SPawel Jakub Dawidek g_topology_unlock(); 646ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 6473650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_64K].sz_zone); 6483650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_16K].sz_zone); 6493650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_4K].sz_zone); 650ed940a82SPawel Jakub Dawidek } 6513650be51SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 6523650be51SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 6533650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 6543650be51SPawel Jakub Dawidek sx_destroy(&sc->sc_lock); 6552d1661a5SPawel Jakub Dawidek } 6562d1661a5SPawel Jakub Dawidek 6572d1661a5SPawel Jakub Dawidek static void 6582d1661a5SPawel Jakub Dawidek g_raid3_orphan(struct g_consumer *cp) 6592d1661a5SPawel Jakub Dawidek { 6602d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 6612d1661a5SPawel Jakub Dawidek 6622d1661a5SPawel Jakub Dawidek g_topology_assert(); 6632d1661a5SPawel Jakub Dawidek 6642d1661a5SPawel Jakub Dawidek disk = cp->private; 6652d1661a5SPawel Jakub Dawidek if (disk == NULL) 6662d1661a5SPawel Jakub Dawidek return; 667ea973705SPawel Jakub Dawidek disk->d_softc->sc_bump_id = G_RAID3_BUMP_SYNCID; 6682d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_DISCONNECTED, 6692d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 6702d1661a5SPawel Jakub Dawidek } 6712d1661a5SPawel Jakub Dawidek 6722d1661a5SPawel Jakub Dawidek static int 6732d1661a5SPawel Jakub Dawidek g_raid3_write_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 6742d1661a5SPawel Jakub Dawidek { 6752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 6762d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 6772d1661a5SPawel Jakub Dawidek off_t offset, length; 6782d1661a5SPawel Jakub Dawidek u_char *sector; 679d97d5ee9SPawel Jakub Dawidek int error = 0; 6802d1661a5SPawel Jakub Dawidek 6813650be51SPawel Jakub Dawidek g_topology_assert_not(); 6822d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 6833650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 6843650be51SPawel Jakub Dawidek 6852d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 6862d1661a5SPawel Jakub Dawidek KASSERT(cp != NULL, ("NULL consumer (%s).", sc->sc_name)); 6872d1661a5SPawel Jakub Dawidek KASSERT(cp->provider != NULL, ("NULL provider (%s).", sc->sc_name)); 6883650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 689d97d5ee9SPawel Jakub Dawidek ("Consumer %s closed? (r%dw%de%d).", cp->provider->name, cp->acr, 690d97d5ee9SPawel Jakub Dawidek cp->acw, cp->ace)); 6912d1661a5SPawel Jakub Dawidek length = cp->provider->sectorsize; 6922d1661a5SPawel Jakub Dawidek offset = cp->provider->mediasize - length; 6932d1661a5SPawel Jakub Dawidek sector = malloc((size_t)length, M_RAID3, M_WAITOK | M_ZERO); 6942d1661a5SPawel Jakub Dawidek if (md != NULL) 6952d1661a5SPawel Jakub Dawidek raid3_metadata_encode(md, sector); 6962d1661a5SPawel Jakub Dawidek error = g_write_data(cp, offset, sector, length); 6972d1661a5SPawel Jakub Dawidek free(sector, M_RAID3); 6982d1661a5SPawel Jakub Dawidek if (error != 0) { 6993aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 7003aae74ecSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot write metadata on %s " 7013aae74ecSPawel Jakub Dawidek "(device=%s, error=%d).", 7023aae74ecSPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name, error); 7033aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 7043aae74ecSPawel Jakub Dawidek } else { 7053aae74ecSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot write metadata on %s " 7063aae74ecSPawel Jakub Dawidek "(device=%s, error=%d).", 7073aae74ecSPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name, error); 7083aae74ecSPawel Jakub Dawidek } 7093aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 7103aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 7113aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 7123aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 7133aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 7142d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 7152d1661a5SPawel Jakub Dawidek } 7163aae74ecSPawel Jakub Dawidek } 7172d1661a5SPawel Jakub Dawidek return (error); 7182d1661a5SPawel Jakub Dawidek } 7192d1661a5SPawel Jakub Dawidek 7202d1661a5SPawel Jakub Dawidek int 7212d1661a5SPawel Jakub Dawidek g_raid3_clear_metadata(struct g_raid3_disk *disk) 7222d1661a5SPawel Jakub Dawidek { 7232d1661a5SPawel Jakub Dawidek int error; 7242d1661a5SPawel Jakub Dawidek 7253650be51SPawel Jakub Dawidek g_topology_assert_not(); 7263650be51SPawel Jakub Dawidek sx_assert(&disk->d_softc->sc_lock, SX_LOCKED); 7273650be51SPawel Jakub Dawidek 7282d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, NULL); 7292d1661a5SPawel Jakub Dawidek if (error == 0) { 7302d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s cleared.", 7312d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 7322d1661a5SPawel Jakub Dawidek } else { 7332d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 7342d1661a5SPawel Jakub Dawidek "Cannot clear metadata on disk %s (error=%d).", 7352d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 7362d1661a5SPawel Jakub Dawidek } 7372d1661a5SPawel Jakub Dawidek return (error); 7382d1661a5SPawel Jakub Dawidek } 7392d1661a5SPawel Jakub Dawidek 7402d1661a5SPawel Jakub Dawidek void 7412d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 7422d1661a5SPawel Jakub Dawidek { 7432d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 744e6890985SPawel Jakub Dawidek struct g_provider *pp; 7452d1661a5SPawel Jakub Dawidek 7462d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 7472d1661a5SPawel Jakub Dawidek strlcpy(md->md_magic, G_RAID3_MAGIC, sizeof(md->md_magic)); 7482d1661a5SPawel Jakub Dawidek md->md_version = G_RAID3_VERSION; 7492d1661a5SPawel Jakub Dawidek strlcpy(md->md_name, sc->sc_name, sizeof(md->md_name)); 7502d1661a5SPawel Jakub Dawidek md->md_id = sc->sc_id; 7512d1661a5SPawel Jakub Dawidek md->md_all = sc->sc_ndisks; 752a245a548SPawel Jakub Dawidek md->md_genid = sc->sc_genid; 7532d1661a5SPawel Jakub Dawidek md->md_mediasize = sc->sc_mediasize; 7542d1661a5SPawel Jakub Dawidek md->md_sectorsize = sc->sc_sectorsize; 7552d1661a5SPawel Jakub Dawidek md->md_mflags = (sc->sc_flags & G_RAID3_DEVICE_FLAG_MASK); 7562d1661a5SPawel Jakub Dawidek md->md_no = disk->d_no; 7572d1661a5SPawel Jakub Dawidek md->md_syncid = disk->d_sync.ds_syncid; 7582d1661a5SPawel Jakub Dawidek md->md_dflags = (disk->d_flags & G_RAID3_DISK_FLAG_MASK); 759c082905bSPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_SYNCHRONIZING) 7602d1661a5SPawel Jakub Dawidek md->md_sync_offset = 0; 761c082905bSPawel Jakub Dawidek else { 762c082905bSPawel Jakub Dawidek md->md_sync_offset = 763c082905bSPawel Jakub Dawidek disk->d_sync.ds_offset_done / (sc->sc_ndisks - 1); 764c082905bSPawel Jakub Dawidek } 765e6890985SPawel Jakub Dawidek if (disk->d_consumer != NULL && disk->d_consumer->provider != NULL) 766e6890985SPawel Jakub Dawidek pp = disk->d_consumer->provider; 767e6890985SPawel Jakub Dawidek else 768e6890985SPawel Jakub Dawidek pp = NULL; 769e6890985SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_HARDCODED) != 0 && pp != NULL) 770e6890985SPawel Jakub Dawidek strlcpy(md->md_provider, pp->name, sizeof(md->md_provider)); 771e6890985SPawel Jakub Dawidek else 7722d1661a5SPawel Jakub Dawidek bzero(md->md_provider, sizeof(md->md_provider)); 773e6890985SPawel Jakub Dawidek if (pp != NULL) 774e6890985SPawel Jakub Dawidek md->md_provsize = pp->mediasize; 775e6890985SPawel Jakub Dawidek else 776e6890985SPawel Jakub Dawidek md->md_provsize = 0; 7772d1661a5SPawel Jakub Dawidek } 7782d1661a5SPawel Jakub Dawidek 7792d1661a5SPawel Jakub Dawidek void 7802d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(struct g_raid3_disk *disk) 7812d1661a5SPawel Jakub Dawidek { 7823650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 7832d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 7842d1661a5SPawel Jakub Dawidek int error; 7852d1661a5SPawel Jakub Dawidek 7863650be51SPawel Jakub Dawidek g_topology_assert_not(); 7873650be51SPawel Jakub Dawidek sc = disk->d_softc; 7883650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 7893650be51SPawel Jakub Dawidek 7902d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(disk, &md); 7912d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, &md); 7922d1661a5SPawel Jakub Dawidek if (error == 0) { 7932d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s updated.", 7942d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 7952d1661a5SPawel Jakub Dawidek } else { 7962d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 7972d1661a5SPawel Jakub Dawidek "Cannot update metadata on disk %s (error=%d).", 7982d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 7992d1661a5SPawel Jakub Dawidek } 8002d1661a5SPawel Jakub Dawidek } 8012d1661a5SPawel Jakub Dawidek 8022d1661a5SPawel Jakub Dawidek static void 803d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(struct g_raid3_softc *sc) 8042d1661a5SPawel Jakub Dawidek { 8052d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 8062d1661a5SPawel Jakub Dawidek u_int n; 8072d1661a5SPawel Jakub Dawidek 8083650be51SPawel Jakub Dawidek g_topology_assert_not(); 8093650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 8102d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 8112d1661a5SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 8122d1661a5SPawel Jakub Dawidek sc->sc_name)); 8132d1661a5SPawel Jakub Dawidek 8142d1661a5SPawel Jakub Dawidek sc->sc_syncid++; 815a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: syncid bumped to %u.", sc->sc_name, 816a245a548SPawel Jakub Dawidek sc->sc_syncid); 8172d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 8182d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 8192d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 8202d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 8212d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 8222d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 8232d1661a5SPawel Jakub Dawidek } 8242d1661a5SPawel Jakub Dawidek } 8252d1661a5SPawel Jakub Dawidek } 8262d1661a5SPawel Jakub Dawidek 8274d006a98SPawel Jakub Dawidek static void 828a245a548SPawel Jakub Dawidek g_raid3_bump_genid(struct g_raid3_softc *sc) 829a245a548SPawel Jakub Dawidek { 830a245a548SPawel Jakub Dawidek struct g_raid3_disk *disk; 831a245a548SPawel Jakub Dawidek u_int n; 832a245a548SPawel Jakub Dawidek 8333650be51SPawel Jakub Dawidek g_topology_assert_not(); 8343650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 835a245a548SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 836a245a548SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 837a245a548SPawel Jakub Dawidek sc->sc_name)); 838a245a548SPawel Jakub Dawidek 839a245a548SPawel Jakub Dawidek sc->sc_genid++; 840a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: genid bumped to %u.", sc->sc_name, 841a245a548SPawel Jakub Dawidek sc->sc_genid); 842a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 843a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 844a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 845a245a548SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 846a245a548SPawel Jakub Dawidek disk->d_genid = sc->sc_genid; 847a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 848a245a548SPawel Jakub Dawidek } 849a245a548SPawel Jakub Dawidek } 850a245a548SPawel Jakub Dawidek } 851a245a548SPawel Jakub Dawidek 8520962f942SPawel Jakub Dawidek static int 8533650be51SPawel Jakub Dawidek g_raid3_idle(struct g_raid3_softc *sc, int acw) 8544d006a98SPawel Jakub Dawidek { 8554d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 8564d006a98SPawel Jakub Dawidek u_int i; 8570962f942SPawel Jakub Dawidek int timeout; 8584d006a98SPawel Jakub Dawidek 8593650be51SPawel Jakub Dawidek g_topology_assert_not(); 8603650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 8613650be51SPawel Jakub Dawidek 8620962f942SPawel Jakub Dawidek if (sc->sc_provider == NULL) 8630962f942SPawel Jakub Dawidek return (0); 8640962f942SPawel Jakub Dawidek if (sc->sc_idle) 8650962f942SPawel Jakub Dawidek return (0); 8660962f942SPawel Jakub Dawidek if (sc->sc_writes > 0) 8670962f942SPawel Jakub Dawidek return (0); 8683650be51SPawel Jakub Dawidek if (acw > 0 || (acw == -1 && sc->sc_provider->acw > 0)) { 86901f1f41cSPawel Jakub Dawidek timeout = g_raid3_idletime - (time_uptime - sc->sc_last_write); 8700962f942SPawel Jakub Dawidek if (timeout > 0) 8710962f942SPawel Jakub Dawidek return (timeout); 8720962f942SPawel Jakub Dawidek } 8734d006a98SPawel Jakub Dawidek sc->sc_idle = 1; 8744d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 8754d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 8764d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 8774d006a98SPawel Jakub Dawidek continue; 8784d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 8794d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 8804d006a98SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 8814d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 8824d006a98SPawel Jakub Dawidek } 8830962f942SPawel Jakub Dawidek return (0); 8844d006a98SPawel Jakub Dawidek } 8854d006a98SPawel Jakub Dawidek 8864d006a98SPawel Jakub Dawidek static void 8874d006a98SPawel Jakub Dawidek g_raid3_unidle(struct g_raid3_softc *sc) 8884d006a98SPawel Jakub Dawidek { 8894d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 8904d006a98SPawel Jakub Dawidek u_int i; 8914d006a98SPawel Jakub Dawidek 8923650be51SPawel Jakub Dawidek g_topology_assert_not(); 8933650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 8943650be51SPawel Jakub Dawidek 8954d006a98SPawel Jakub Dawidek sc->sc_idle = 0; 89601f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 8974d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 8984d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 8994d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 9004d006a98SPawel Jakub Dawidek continue; 9014d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 9024d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 9034d006a98SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 9044d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 9054d006a98SPawel Jakub Dawidek } 9064d006a98SPawel Jakub Dawidek } 9074d006a98SPawel Jakub Dawidek 9082d1661a5SPawel Jakub Dawidek /* 9092d1661a5SPawel Jakub Dawidek * Treat bio_driver1 field in parent bio as list head and field bio_caller1 9102d1661a5SPawel Jakub Dawidek * in child bio as pointer to the next element on the list. 9112d1661a5SPawel Jakub Dawidek */ 9122d1661a5SPawel Jakub Dawidek #define G_RAID3_HEAD_BIO(pbp) (pbp)->bio_driver1 9132d1661a5SPawel Jakub Dawidek 9142d1661a5SPawel Jakub Dawidek #define G_RAID3_NEXT_BIO(cbp) (cbp)->bio_caller1 9152d1661a5SPawel Jakub Dawidek 9162d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_BIO(pbp, bp) \ 9172d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); (bp) != NULL; \ 9182d1661a5SPawel Jakub Dawidek (bp) = G_RAID3_NEXT_BIO(bp)) 9192d1661a5SPawel Jakub Dawidek 9202d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_SAFE_BIO(pbp, bp, tmpbp) \ 9212d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); \ 9222d1661a5SPawel Jakub Dawidek (bp) != NULL && ((tmpbp) = G_RAID3_NEXT_BIO(bp), 1); \ 9232d1661a5SPawel Jakub Dawidek (bp) = (tmpbp)) 9242d1661a5SPawel Jakub Dawidek 9252d1661a5SPawel Jakub Dawidek static void 9262d1661a5SPawel Jakub Dawidek g_raid3_init_bio(struct bio *pbp) 9272d1661a5SPawel Jakub Dawidek { 9282d1661a5SPawel Jakub Dawidek 9292d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = NULL; 9302d1661a5SPawel Jakub Dawidek } 9312d1661a5SPawel Jakub Dawidek 9322d1661a5SPawel Jakub Dawidek static void 933dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(struct bio *cbp) 934dba915cfSPawel Jakub Dawidek { 935dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 936dba915cfSPawel Jakub Dawidek 937dba915cfSPawel Jakub Dawidek pbp = cbp->bio_parent; 938dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) 939dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 940dba915cfSPawel Jakub Dawidek else { 941dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 942dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) { 943dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 944dba915cfSPawel Jakub Dawidek break; 945dba915cfSPawel Jakub Dawidek } 946dba915cfSPawel Jakub Dawidek } 947dba915cfSPawel Jakub Dawidek } 948dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 949dba915cfSPawel Jakub Dawidek } 950dba915cfSPawel Jakub Dawidek 951dba915cfSPawel Jakub Dawidek static void 952dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(struct bio *sbp, struct bio *dbp) 953dba915cfSPawel Jakub Dawidek { 954dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 955dba915cfSPawel Jakub Dawidek 956dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(sbp); 957dba915cfSPawel Jakub Dawidek pbp = dbp->bio_parent; 958dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(sbp) = G_RAID3_NEXT_BIO(dbp); 959dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == dbp) 960dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = sbp; 961dba915cfSPawel Jakub Dawidek else { 962dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 963dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == dbp) { 964dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = sbp; 965dba915cfSPawel Jakub Dawidek break; 966dba915cfSPawel Jakub Dawidek } 967dba915cfSPawel Jakub Dawidek } 968dba915cfSPawel Jakub Dawidek } 969dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(dbp) = NULL; 970dba915cfSPawel Jakub Dawidek } 971dba915cfSPawel Jakub Dawidek 972dba915cfSPawel Jakub Dawidek static void 9732d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(struct g_raid3_softc *sc, struct bio *cbp) 9742d1661a5SPawel Jakub Dawidek { 9752d1661a5SPawel Jakub Dawidek struct bio *bp, *pbp; 9762d1661a5SPawel Jakub Dawidek size_t size; 9772d1661a5SPawel Jakub Dawidek 9782d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 9792d1661a5SPawel Jakub Dawidek pbp->bio_children--; 9802d1661a5SPawel Jakub Dawidek KASSERT(cbp->bio_data != NULL, ("NULL bio_data")); 9812d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 982ed940a82SPawel Jakub Dawidek g_raid3_free(sc, cbp->bio_data, size); 9832d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) { 9842d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 9852d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 9862d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9872d1661a5SPawel Jakub Dawidek } else { 9882d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 9892d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) 9902d1661a5SPawel Jakub Dawidek break; 9912d1661a5SPawel Jakub Dawidek } 992dba915cfSPawel Jakub Dawidek if (bp != NULL) { 993dba915cfSPawel Jakub Dawidek KASSERT(G_RAID3_NEXT_BIO(bp) != NULL, 994dba915cfSPawel Jakub Dawidek ("NULL bp->bio_driver1")); 9952d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 9962d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 997dba915cfSPawel Jakub Dawidek } 9982d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9992d1661a5SPawel Jakub Dawidek } 10002d1661a5SPawel Jakub Dawidek } 10012d1661a5SPawel Jakub Dawidek 10022d1661a5SPawel Jakub Dawidek static struct bio * 10032d1661a5SPawel Jakub Dawidek g_raid3_clone_bio(struct g_raid3_softc *sc, struct bio *pbp) 10042d1661a5SPawel Jakub Dawidek { 10052d1661a5SPawel Jakub Dawidek struct bio *bp, *cbp; 10062d1661a5SPawel Jakub Dawidek size_t size; 10073650be51SPawel Jakub Dawidek int memflag; 10082d1661a5SPawel Jakub Dawidek 10092d1661a5SPawel Jakub Dawidek cbp = g_clone_bio(pbp); 10102d1661a5SPawel Jakub Dawidek if (cbp == NULL) 10112d1661a5SPawel Jakub Dawidek return (NULL); 10122d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 10133650be51SPawel Jakub Dawidek if ((pbp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) != 0) 10143650be51SPawel Jakub Dawidek memflag = M_WAITOK; 10152d1661a5SPawel Jakub Dawidek else 10163650be51SPawel Jakub Dawidek memflag = M_NOWAIT; 1017ed940a82SPawel Jakub Dawidek cbp->bio_data = g_raid3_alloc(sc, size, memflag); 10183650be51SPawel Jakub Dawidek if (cbp->bio_data == NULL) { 10192d1661a5SPawel Jakub Dawidek pbp->bio_children--; 10202d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 10212d1661a5SPawel Jakub Dawidek return (NULL); 10222d1661a5SPawel Jakub Dawidek } 10232d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 10242d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == NULL) 10252d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = cbp; 10262d1661a5SPawel Jakub Dawidek else { 10272d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 10282d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == NULL) { 10292d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = cbp; 10302d1661a5SPawel Jakub Dawidek break; 10312d1661a5SPawel Jakub Dawidek } 10322d1661a5SPawel Jakub Dawidek } 10332d1661a5SPawel Jakub Dawidek } 10342d1661a5SPawel Jakub Dawidek return (cbp); 10352d1661a5SPawel Jakub Dawidek } 10362d1661a5SPawel Jakub Dawidek 10372d1661a5SPawel Jakub Dawidek static void 10382d1661a5SPawel Jakub Dawidek g_raid3_scatter(struct bio *pbp) 10392d1661a5SPawel Jakub Dawidek { 10402d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 10412d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1042ee40c7aaSPawel Jakub Dawidek struct bio *bp, *cbp, *tmpbp; 10432d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 10442d1661a5SPawel Jakub Dawidek 10452d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 10462d1661a5SPawel Jakub Dawidek bp = NULL; 10472d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10482d1661a5SPawel Jakub Dawidek /* 10492d1661a5SPawel Jakub Dawidek * Find bio for which we should calculate data. 10502d1661a5SPawel Jakub Dawidek */ 10512d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10522d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 10532d1661a5SPawel Jakub Dawidek bp = cbp; 10542d1661a5SPawel Jakub Dawidek break; 10552d1661a5SPawel Jakub Dawidek } 10562d1661a5SPawel Jakub Dawidek } 10572d1661a5SPawel Jakub Dawidek KASSERT(bp != NULL, ("NULL parity bio.")); 10582d1661a5SPawel Jakub Dawidek } 10592d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 10602d1661a5SPawel Jakub Dawidek cadd = padd = 0; 10612d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 10622d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10632d1661a5SPawel Jakub Dawidek if (cbp == bp) 10642d1661a5SPawel Jakub Dawidek continue; 10652d1661a5SPawel Jakub Dawidek bcopy(pbp->bio_data + padd, cbp->bio_data + cadd, atom); 10662d1661a5SPawel Jakub Dawidek padd += atom; 10672d1661a5SPawel Jakub Dawidek } 10682d1661a5SPawel Jakub Dawidek cadd += atom; 10692d1661a5SPawel Jakub Dawidek } 10702d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10712d1661a5SPawel Jakub Dawidek /* 10722d1661a5SPawel Jakub Dawidek * Calculate parity. 10732d1661a5SPawel Jakub Dawidek */ 10742d1661a5SPawel Jakub Dawidek bzero(bp->bio_data, bp->bio_length); 10752d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 10762d1661a5SPawel Jakub Dawidek if (cbp == bp) 10772d1661a5SPawel Jakub Dawidek continue; 10782d1661a5SPawel Jakub Dawidek g_raid3_xor(cbp->bio_data, bp->bio_data, bp->bio_data, 10792d1661a5SPawel Jakub Dawidek bp->bio_length); 10802d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_NODISK) != 0) 10812d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 10822d1661a5SPawel Jakub Dawidek } 10832d1661a5SPawel Jakub Dawidek } 1084ee40c7aaSPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 10852d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 10862d1661a5SPawel Jakub Dawidek 10872d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 10882d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 10892d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 10902d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 10913650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 1092d97d5ee9SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 1093d97d5ee9SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 109479e61493SPawel Jakub Dawidek cp->index++; 10950962f942SPawel Jakub Dawidek sc->sc_writes++; 10962d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 10972d1661a5SPawel Jakub Dawidek } 10982d1661a5SPawel Jakub Dawidek } 10992d1661a5SPawel Jakub Dawidek 11002d1661a5SPawel Jakub Dawidek static void 11012d1661a5SPawel Jakub Dawidek g_raid3_gather(struct bio *pbp) 11022d1661a5SPawel Jakub Dawidek { 11032d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 11042d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1105f5a2f7feSPawel Jakub Dawidek struct bio *xbp, *fbp, *cbp; 11062d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 11072d1661a5SPawel Jakub Dawidek 11082d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 11092d1661a5SPawel Jakub Dawidek /* 1110f5a2f7feSPawel Jakub Dawidek * Find bio for which we have to calculate data. 11112d1661a5SPawel Jakub Dawidek * While going through this path, check if all requests 11122d1661a5SPawel Jakub Dawidek * succeeded, if not, deny whole request. 1113f5a2f7feSPawel Jakub Dawidek * If we're in COMPLETE mode, we allow one request to fail, 1114f5a2f7feSPawel Jakub Dawidek * so if we find one, we're sending it to the parity consumer. 1115f5a2f7feSPawel Jakub Dawidek * If there are more failed requests, we deny whole request. 11162d1661a5SPawel Jakub Dawidek */ 1117f5a2f7feSPawel Jakub Dawidek xbp = fbp = NULL; 11182d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 11192d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 1120f5a2f7feSPawel Jakub Dawidek KASSERT(xbp == NULL, ("More than one parity bio.")); 1121f5a2f7feSPawel Jakub Dawidek xbp = cbp; 11222d1661a5SPawel Jakub Dawidek } 11232d1661a5SPawel Jakub Dawidek if (cbp->bio_error == 0) 11242d1661a5SPawel Jakub Dawidek continue; 11252d1661a5SPawel Jakub Dawidek /* 11262d1661a5SPawel Jakub Dawidek * Found failed request. 11272d1661a5SPawel Jakub Dawidek */ 1128f5a2f7feSPawel Jakub Dawidek if (fbp == NULL) { 1129f5a2f7feSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_DEGRADED) != 0) { 11302d1661a5SPawel Jakub Dawidek /* 1131f5a2f7feSPawel Jakub Dawidek * We are already in degraded mode, so we can't 1132f5a2f7feSPawel Jakub Dawidek * accept any failures. 11332d1661a5SPawel Jakub Dawidek */ 1134f5a2f7feSPawel Jakub Dawidek if (pbp->bio_error == 0) 113517fec17eSPawel Jakub Dawidek pbp->bio_error = cbp->bio_error; 11362d1661a5SPawel Jakub Dawidek } else { 1137f5a2f7feSPawel Jakub Dawidek fbp = cbp; 11382d1661a5SPawel Jakub Dawidek } 1139f5a2f7feSPawel Jakub Dawidek } else { 11402d1661a5SPawel Jakub Dawidek /* 11412d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 11422d1661a5SPawel Jakub Dawidek */ 11432d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 1144f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11452d1661a5SPawel Jakub Dawidek } 11463aae74ecSPawel Jakub Dawidek disk = cbp->bio_caller2; 11473aae74ecSPawel Jakub Dawidek if (disk == NULL) 11483aae74ecSPawel Jakub Dawidek continue; 11493aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 11503aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 11513aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, "Request failed (error=%d).", 11523aae74ecSPawel Jakub Dawidek cbp->bio_error); 11533aae74ecSPawel Jakub Dawidek } else { 11543aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(1, cbp, "Request failed (error=%d).", 11553aae74ecSPawel Jakub Dawidek cbp->bio_error); 11563aae74ecSPawel Jakub Dawidek } 11573aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 11583aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 11593aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 11603aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 11613aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 11623aae74ecSPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 11633aae74ecSPawel Jakub Dawidek } 11642d1661a5SPawel Jakub Dawidek } 11652d1661a5SPawel Jakub Dawidek if (pbp->bio_error != 0) 11662d1661a5SPawel Jakub Dawidek goto finish; 1167dba915cfSPawel Jakub Dawidek if (fbp != NULL && (pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1168dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_VERIFY; 1169dba915cfSPawel Jakub Dawidek if (xbp != fbp) 1170dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(xbp, fbp); 1171dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, fbp); 1172dba915cfSPawel Jakub Dawidek } else if (fbp != NULL) { 11732d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 11742d1661a5SPawel Jakub Dawidek 11752d1661a5SPawel Jakub Dawidek /* 11762d1661a5SPawel Jakub Dawidek * One request failed, so send the same request to 11772d1661a5SPawel Jakub Dawidek * the parity consumer. 11782d1661a5SPawel Jakub Dawidek */ 1179f5a2f7feSPawel Jakub Dawidek disk = pbp->bio_driver2; 11802d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 1181f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11822d1661a5SPawel Jakub Dawidek goto finish; 11832d1661a5SPawel Jakub Dawidek } 11842d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 11852d1661a5SPawel Jakub Dawidek pbp->bio_inbed--; 1186f5a2f7feSPawel Jakub Dawidek fbp->bio_flags &= ~(BIO_DONE | BIO_ERROR); 1187f5a2f7feSPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 1188f5a2f7feSPawel Jakub Dawidek fbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1189f5a2f7feSPawel Jakub Dawidek fbp->bio_error = 0; 1190f5a2f7feSPawel Jakub Dawidek fbp->bio_completed = 0; 1191f5a2f7feSPawel Jakub Dawidek fbp->bio_children = 0; 1192f5a2f7feSPawel Jakub Dawidek fbp->bio_inbed = 0; 11932d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 1194f5a2f7feSPawel Jakub Dawidek fbp->bio_caller2 = disk; 1195f5a2f7feSPawel Jakub Dawidek fbp->bio_to = cp->provider; 1196f5a2f7feSPawel Jakub Dawidek G_RAID3_LOGREQ(3, fbp, "Sending request (recover)."); 11973650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 11982d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 11992d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 120079e61493SPawel Jakub Dawidek cp->index++; 1201f5a2f7feSPawel Jakub Dawidek g_io_request(fbp, cp); 12022d1661a5SPawel Jakub Dawidek return; 12032d1661a5SPawel Jakub Dawidek } 1204f5a2f7feSPawel Jakub Dawidek if (xbp != NULL) { 1205f5a2f7feSPawel Jakub Dawidek /* 1206f5a2f7feSPawel Jakub Dawidek * Calculate parity. 1207f5a2f7feSPawel Jakub Dawidek */ 1208f5a2f7feSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 1209f5a2f7feSPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) 1210f5a2f7feSPawel Jakub Dawidek continue; 1211f5a2f7feSPawel Jakub Dawidek g_raid3_xor(cbp->bio_data, xbp->bio_data, xbp->bio_data, 1212f5a2f7feSPawel Jakub Dawidek xbp->bio_length); 1213f5a2f7feSPawel Jakub Dawidek } 1214f5a2f7feSPawel Jakub Dawidek xbp->bio_cflags &= ~G_RAID3_BIO_CFLAG_PARITY; 1215dba915cfSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1216dba915cfSPawel Jakub Dawidek if (!g_raid3_is_zero(xbp)) { 1217dba915cfSPawel Jakub Dawidek g_raid3_parity_mismatch++; 1218dba915cfSPawel Jakub Dawidek pbp->bio_error = EIO; 1219dba915cfSPawel Jakub Dawidek goto finish; 1220dba915cfSPawel Jakub Dawidek } 1221dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, xbp); 1222dba915cfSPawel Jakub Dawidek } 12232d1661a5SPawel Jakub Dawidek } 12242d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 12252d1661a5SPawel Jakub Dawidek cadd = padd = 0; 12262d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 12272d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 12282d1661a5SPawel Jakub Dawidek bcopy(cbp->bio_data + cadd, pbp->bio_data + padd, atom); 12292d1661a5SPawel Jakub Dawidek pbp->bio_completed += atom; 12302d1661a5SPawel Jakub Dawidek padd += atom; 12312d1661a5SPawel Jakub Dawidek } 12322d1661a5SPawel Jakub Dawidek cadd += atom; 12332d1661a5SPawel Jakub Dawidek } 12342d1661a5SPawel Jakub Dawidek finish: 12352d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 12362d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 12374cf67afeSPawel Jakub Dawidek else { 12384cf67afeSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) 12394cf67afeSPawel Jakub Dawidek G_RAID3_LOGREQ(1, pbp, "Verification error."); 12402d1661a5SPawel Jakub Dawidek else 12412d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 12424cf67afeSPawel Jakub Dawidek } 1243dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_MASK; 12442d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 12452d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 1246290c6161SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 12472d1661a5SPawel Jakub Dawidek } 12482d1661a5SPawel Jakub Dawidek 12492d1661a5SPawel Jakub Dawidek static void 12502d1661a5SPawel Jakub Dawidek g_raid3_done(struct bio *bp) 12512d1661a5SPawel Jakub Dawidek { 12522d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12532d1661a5SPawel Jakub Dawidek 12542d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 12552d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_REGULAR; 12562d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Regular request done (error=%d).", bp->bio_error); 12572d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 12582d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 12592d1661a5SPawel Jakub Dawidek wakeup(sc); 12602d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 12612d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 12622d1661a5SPawel Jakub Dawidek } 12632d1661a5SPawel Jakub Dawidek 12642d1661a5SPawel Jakub Dawidek static void 12652d1661a5SPawel Jakub Dawidek g_raid3_regular_request(struct bio *cbp) 12662d1661a5SPawel Jakub Dawidek { 12672d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12682d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 12692d1661a5SPawel Jakub Dawidek struct bio *pbp; 12702d1661a5SPawel Jakub Dawidek 12712d1661a5SPawel Jakub Dawidek g_topology_assert_not(); 12722d1661a5SPawel Jakub Dawidek 12732d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 12742d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 12750962f942SPawel Jakub Dawidek cbp->bio_from->index--; 12760962f942SPawel Jakub Dawidek if (cbp->bio_cmd == BIO_WRITE) 12770962f942SPawel Jakub Dawidek sc->sc_writes--; 12782d1661a5SPawel Jakub Dawidek disk = cbp->bio_from->private; 12792d1661a5SPawel Jakub Dawidek if (disk == NULL) { 12802d1661a5SPawel Jakub Dawidek g_topology_lock(); 12812d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cbp->bio_from); 12822d1661a5SPawel Jakub Dawidek g_topology_unlock(); 12832d1661a5SPawel Jakub Dawidek } 12842d1661a5SPawel Jakub Dawidek 12852d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Request finished."); 12862d1661a5SPawel Jakub Dawidek pbp->bio_inbed++; 12872d1661a5SPawel Jakub Dawidek KASSERT(pbp->bio_inbed <= pbp->bio_children, 12882d1661a5SPawel Jakub Dawidek ("bio_inbed (%u) is bigger than bio_children (%u).", pbp->bio_inbed, 12892d1661a5SPawel Jakub Dawidek pbp->bio_children)); 12902d1661a5SPawel Jakub Dawidek if (pbp->bio_inbed != pbp->bio_children) 12912d1661a5SPawel Jakub Dawidek return; 12922d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 12932d1661a5SPawel Jakub Dawidek case BIO_READ: 12942d1661a5SPawel Jakub Dawidek g_raid3_gather(pbp); 12952d1661a5SPawel Jakub Dawidek break; 12962d1661a5SPawel Jakub Dawidek case BIO_WRITE: 12972d1661a5SPawel Jakub Dawidek case BIO_DELETE: 12982d1661a5SPawel Jakub Dawidek { 12992d1661a5SPawel Jakub Dawidek int error = 0; 13002d1661a5SPawel Jakub Dawidek 13012d1661a5SPawel Jakub Dawidek pbp->bio_completed = pbp->bio_length; 13022d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) { 13033aae74ecSPawel Jakub Dawidek if (cbp->bio_error == 0) { 13043aae74ecSPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13053aae74ecSPawel Jakub Dawidek continue; 13062d1661a5SPawel Jakub Dawidek } 13073aae74ecSPawel Jakub Dawidek 13082d1661a5SPawel Jakub Dawidek if (error == 0) 13092d1661a5SPawel Jakub Dawidek error = cbp->bio_error; 13102d1661a5SPawel Jakub Dawidek else if (pbp->bio_error == 0) { 13112d1661a5SPawel Jakub Dawidek /* 13122d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 13132d1661a5SPawel Jakub Dawidek */ 13142d1661a5SPawel Jakub Dawidek pbp->bio_error = error; 13152d1661a5SPawel Jakub Dawidek } 13163aae74ecSPawel Jakub Dawidek 13173aae74ecSPawel Jakub Dawidek disk = cbp->bio_caller2; 13183aae74ecSPawel Jakub Dawidek if (disk == NULL) { 13193aae74ecSPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13203aae74ecSPawel Jakub Dawidek continue; 13213aae74ecSPawel Jakub Dawidek } 13223aae74ecSPawel Jakub Dawidek 13233aae74ecSPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_BROKEN) == 0) { 13243aae74ecSPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_BROKEN; 13253aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, 13263aae74ecSPawel Jakub Dawidek "Request failed (error=%d).", 13273aae74ecSPawel Jakub Dawidek cbp->bio_error); 13283aae74ecSPawel Jakub Dawidek } else { 13293aae74ecSPawel Jakub Dawidek G_RAID3_LOGREQ(1, cbp, 13303aae74ecSPawel Jakub Dawidek "Request failed (error=%d).", 13313aae74ecSPawel Jakub Dawidek cbp->bio_error); 13323aae74ecSPawel Jakub Dawidek } 13333aae74ecSPawel Jakub Dawidek if (g_raid3_disconnect_on_failure && 13343aae74ecSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 13353aae74ecSPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 13363aae74ecSPawel Jakub Dawidek g_raid3_event_send(disk, 13373aae74ecSPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 13383aae74ecSPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 13392d1661a5SPawel Jakub Dawidek } 13402d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 13412d1661a5SPawel Jakub Dawidek } 13422d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 13432d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 13442d1661a5SPawel Jakub Dawidek else 13452d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 13462d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_DEGRADED; 13472d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_NOPARITY; 13483650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_inflight, pbp); 13493650be51SPawel Jakub Dawidek /* Release delayed sync requests if possible. */ 13503650be51SPawel Jakub Dawidek g_raid3_sync_release(sc); 13512d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 13522d1661a5SPawel Jakub Dawidek break; 13532d1661a5SPawel Jakub Dawidek } 13542d1661a5SPawel Jakub Dawidek } 13552d1661a5SPawel Jakub Dawidek } 13562d1661a5SPawel Jakub Dawidek 13572d1661a5SPawel Jakub Dawidek static void 13582d1661a5SPawel Jakub Dawidek g_raid3_sync_done(struct bio *bp) 13592d1661a5SPawel Jakub Dawidek { 13602d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 13612d1661a5SPawel Jakub Dawidek 13622d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request delivered."); 13632d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 13642d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_SYNC; 13652d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 13662d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 13672d1661a5SPawel Jakub Dawidek wakeup(sc); 13682d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 13692d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 13702d1661a5SPawel Jakub Dawidek } 13712d1661a5SPawel Jakub Dawidek 13722d1661a5SPawel Jakub Dawidek static void 13732d1661a5SPawel Jakub Dawidek g_raid3_start(struct bio *bp) 13742d1661a5SPawel Jakub Dawidek { 13752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 13762d1661a5SPawel Jakub Dawidek 13772d1661a5SPawel Jakub Dawidek sc = bp->bio_to->geom->softc; 13782d1661a5SPawel Jakub Dawidek /* 13792d1661a5SPawel Jakub Dawidek * If sc == NULL or there are no valid disks, provider's error 13802d1661a5SPawel Jakub Dawidek * should be set and g_raid3_start() should not be called at all. 13812d1661a5SPawel Jakub Dawidek */ 13822d1661a5SPawel Jakub Dawidek KASSERT(sc != NULL && (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 13832d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE), 13842d1661a5SPawel Jakub Dawidek ("Provider's error should be set (error=%d)(device=%s).", 13852d1661a5SPawel Jakub Dawidek bp->bio_to->error, bp->bio_to->name)); 13862d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Request received."); 13872d1661a5SPawel Jakub Dawidek 13882d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 13892d1661a5SPawel Jakub Dawidek case BIO_READ: 13902d1661a5SPawel Jakub Dawidek case BIO_WRITE: 13912d1661a5SPawel Jakub Dawidek case BIO_DELETE: 13922d1661a5SPawel Jakub Dawidek break; 13932d1661a5SPawel Jakub Dawidek case BIO_GETATTR: 13942d1661a5SPawel Jakub Dawidek default: 13952d1661a5SPawel Jakub Dawidek g_io_deliver(bp, EOPNOTSUPP); 13962d1661a5SPawel Jakub Dawidek return; 13972d1661a5SPawel Jakub Dawidek } 13982d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 13992d1661a5SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_queue, bp); 14002d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 14012d1661a5SPawel Jakub Dawidek wakeup(sc); 14022d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 14032d1661a5SPawel Jakub Dawidek } 14042d1661a5SPawel Jakub Dawidek 14052d1661a5SPawel Jakub Dawidek /* 14063650be51SPawel Jakub Dawidek * Return TRUE if the given request is colliding with a in-progress 14073650be51SPawel Jakub Dawidek * synchronization request. 14082d1661a5SPawel Jakub Dawidek */ 14093650be51SPawel Jakub Dawidek static int 14103650be51SPawel Jakub Dawidek g_raid3_sync_collision(struct g_raid3_softc *sc, struct bio *bp) 14112d1661a5SPawel Jakub Dawidek { 14122d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 14133650be51SPawel Jakub Dawidek struct bio *sbp; 14143650be51SPawel Jakub Dawidek off_t rstart, rend, sstart, send; 14153650be51SPawel Jakub Dawidek int i; 14163650be51SPawel Jakub Dawidek 14173650be51SPawel Jakub Dawidek disk = sc->sc_syncdisk; 14183650be51SPawel Jakub Dawidek if (disk == NULL) 14193650be51SPawel Jakub Dawidek return (0); 14203650be51SPawel Jakub Dawidek rstart = bp->bio_offset; 14213650be51SPawel Jakub Dawidek rend = bp->bio_offset + bp->bio_length; 14223650be51SPawel Jakub Dawidek for (i = 0; i < g_raid3_syncreqs; i++) { 14233650be51SPawel Jakub Dawidek sbp = disk->d_sync.ds_bios[i]; 14243650be51SPawel Jakub Dawidek if (sbp == NULL) 14253650be51SPawel Jakub Dawidek continue; 14263650be51SPawel Jakub Dawidek sstart = sbp->bio_offset; 14273650be51SPawel Jakub Dawidek send = sbp->bio_length; 14283650be51SPawel Jakub Dawidek if (sbp->bio_cmd == BIO_WRITE) { 14293650be51SPawel Jakub Dawidek sstart *= sc->sc_ndisks - 1; 14303650be51SPawel Jakub Dawidek send *= sc->sc_ndisks - 1; 14313650be51SPawel Jakub Dawidek } 14323650be51SPawel Jakub Dawidek send += sstart; 14333650be51SPawel Jakub Dawidek if (rend > sstart && rstart < send) 14343650be51SPawel Jakub Dawidek return (1); 14353650be51SPawel Jakub Dawidek } 14363650be51SPawel Jakub Dawidek return (0); 14373650be51SPawel Jakub Dawidek } 14383650be51SPawel Jakub Dawidek 14393650be51SPawel Jakub Dawidek /* 14403650be51SPawel Jakub Dawidek * Return TRUE if the given sync request is colliding with a in-progress regular 14413650be51SPawel Jakub Dawidek * request. 14423650be51SPawel Jakub Dawidek */ 14433650be51SPawel Jakub Dawidek static int 14443650be51SPawel Jakub Dawidek g_raid3_regular_collision(struct g_raid3_softc *sc, struct bio *sbp) 14453650be51SPawel Jakub Dawidek { 14463650be51SPawel Jakub Dawidek off_t rstart, rend, sstart, send; 14472d1661a5SPawel Jakub Dawidek struct bio *bp; 14482d1661a5SPawel Jakub Dawidek 14493650be51SPawel Jakub Dawidek if (sc->sc_syncdisk == NULL) 14503650be51SPawel Jakub Dawidek return (0); 14513650be51SPawel Jakub Dawidek sstart = sbp->bio_offset; 14523650be51SPawel Jakub Dawidek send = sstart + sbp->bio_length; 14533650be51SPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_inflight.queue, bio_queue) { 14543650be51SPawel Jakub Dawidek rstart = bp->bio_offset; 14553650be51SPawel Jakub Dawidek rend = bp->bio_offset + bp->bio_length; 14563650be51SPawel Jakub Dawidek if (rend > sstart && rstart < send) 14573650be51SPawel Jakub Dawidek return (1); 14582d1661a5SPawel Jakub Dawidek } 14593650be51SPawel Jakub Dawidek return (0); 14602d1661a5SPawel Jakub Dawidek } 14612d1661a5SPawel Jakub Dawidek 14623650be51SPawel Jakub Dawidek /* 14633650be51SPawel Jakub Dawidek * Puts request onto delayed queue. 14643650be51SPawel Jakub Dawidek */ 14653650be51SPawel Jakub Dawidek static void 14663650be51SPawel Jakub Dawidek g_raid3_regular_delay(struct g_raid3_softc *sc, struct bio *bp) 14673650be51SPawel Jakub Dawidek { 14683650be51SPawel Jakub Dawidek 14693650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Delaying request."); 14703650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_regular_delayed, bp); 14713650be51SPawel Jakub Dawidek } 14723650be51SPawel Jakub Dawidek 14733650be51SPawel Jakub Dawidek /* 14743650be51SPawel Jakub Dawidek * Puts synchronization request onto delayed queue. 14753650be51SPawel Jakub Dawidek */ 14763650be51SPawel Jakub Dawidek static void 14773650be51SPawel Jakub Dawidek g_raid3_sync_delay(struct g_raid3_softc *sc, struct bio *bp) 14783650be51SPawel Jakub Dawidek { 14793650be51SPawel Jakub Dawidek 14803650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Delaying synchronization request."); 14813650be51SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_sync_delayed, bp); 14823650be51SPawel Jakub Dawidek } 14833650be51SPawel Jakub Dawidek 14843650be51SPawel Jakub Dawidek /* 14853650be51SPawel Jakub Dawidek * Releases delayed regular requests which don't collide anymore with sync 14863650be51SPawel Jakub Dawidek * requests. 14873650be51SPawel Jakub Dawidek */ 14883650be51SPawel Jakub Dawidek static void 14893650be51SPawel Jakub Dawidek g_raid3_regular_release(struct g_raid3_softc *sc) 14903650be51SPawel Jakub Dawidek { 14913650be51SPawel Jakub Dawidek struct bio *bp, *bp2; 14923650be51SPawel Jakub Dawidek 14933650be51SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(bp, &sc->sc_regular_delayed.queue, bio_queue, bp2) { 14943650be51SPawel Jakub Dawidek if (g_raid3_sync_collision(sc, bp)) 14953650be51SPawel Jakub Dawidek continue; 14963650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_regular_delayed, bp); 14973650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, "Releasing delayed request (%p).", bp); 14983650be51SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 14993650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 15003650be51SPawel Jakub Dawidek #if 0 15013650be51SPawel Jakub Dawidek /* 15023650be51SPawel Jakub Dawidek * wakeup() is not needed, because this function is called from 15033650be51SPawel Jakub Dawidek * the worker thread. 15043650be51SPawel Jakub Dawidek */ 15053650be51SPawel Jakub Dawidek wakeup(&sc->sc_queue); 15063650be51SPawel Jakub Dawidek #endif 15073650be51SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 15083650be51SPawel Jakub Dawidek } 15093650be51SPawel Jakub Dawidek } 15103650be51SPawel Jakub Dawidek 15113650be51SPawel Jakub Dawidek /* 15123650be51SPawel Jakub Dawidek * Releases delayed sync requests which don't collide anymore with regular 15133650be51SPawel Jakub Dawidek * requests. 15143650be51SPawel Jakub Dawidek */ 15153650be51SPawel Jakub Dawidek static void 15163650be51SPawel Jakub Dawidek g_raid3_sync_release(struct g_raid3_softc *sc) 15173650be51SPawel Jakub Dawidek { 15183650be51SPawel Jakub Dawidek struct bio *bp, *bp2; 15193650be51SPawel Jakub Dawidek 15203650be51SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(bp, &sc->sc_sync_delayed.queue, bio_queue, bp2) { 15213650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 15223650be51SPawel Jakub Dawidek continue; 15233650be51SPawel Jakub Dawidek bioq_remove(&sc->sc_sync_delayed, bp); 15243650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(2, bp, 15253650be51SPawel Jakub Dawidek "Releasing delayed synchronization request."); 15263650be51SPawel Jakub Dawidek g_io_request(bp, bp->bio_from); 15273650be51SPawel Jakub Dawidek } 15283650be51SPawel Jakub Dawidek } 15293650be51SPawel Jakub Dawidek 15303650be51SPawel Jakub Dawidek /* 15313650be51SPawel Jakub Dawidek * Handle synchronization requests. 15323650be51SPawel Jakub Dawidek * Every synchronization request is two-steps process: first, READ request is 15333650be51SPawel Jakub Dawidek * send to active provider and then WRITE request (with read data) to the provider 15343650be51SPawel Jakub Dawidek * beeing synchronized. When WRITE is finished, new synchronization request is 15353650be51SPawel Jakub Dawidek * send. 15363650be51SPawel Jakub Dawidek */ 15372d1661a5SPawel Jakub Dawidek static void 15382d1661a5SPawel Jakub Dawidek g_raid3_sync_request(struct bio *bp) 15392d1661a5SPawel Jakub Dawidek { 15402d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 15412d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 15422d1661a5SPawel Jakub Dawidek 154379e61493SPawel Jakub Dawidek bp->bio_from->index--; 15442d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 15452d1661a5SPawel Jakub Dawidek disk = bp->bio_from->private; 15462d1661a5SPawel Jakub Dawidek if (disk == NULL) { 15473650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); /* Avoid recursion on sc_lock. */ 15482d1661a5SPawel Jakub Dawidek g_topology_lock(); 15492d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, bp->bio_from); 15502d1661a5SPawel Jakub Dawidek g_topology_unlock(); 15513650be51SPawel Jakub Dawidek free(bp->bio_data, M_RAID3); 15522d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 15533650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 15542d1661a5SPawel Jakub Dawidek return; 15552d1661a5SPawel Jakub Dawidek } 15562d1661a5SPawel Jakub Dawidek 15572d1661a5SPawel Jakub Dawidek /* 15582d1661a5SPawel Jakub Dawidek * Synchronization request. 15592d1661a5SPawel Jakub Dawidek */ 15602d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 15612d1661a5SPawel Jakub Dawidek case BIO_READ: 15622d1661a5SPawel Jakub Dawidek { 15632d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 15642d1661a5SPawel Jakub Dawidek u_char *dst, *src; 15652d1661a5SPawel Jakub Dawidek off_t left; 15662d1661a5SPawel Jakub Dawidek u_int atom; 15672d1661a5SPawel Jakub Dawidek 15682d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 15692d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 15702d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 15712d1661a5SPawel Jakub Dawidek bp->bio_error); 15722d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 15732d1661a5SPawel Jakub Dawidek return; 15742d1661a5SPawel Jakub Dawidek } 15752d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 15762d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 15772d1661a5SPawel Jakub Dawidek dst = src = bp->bio_data; 15782d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) { 15792d1661a5SPawel Jakub Dawidek u_int n; 15802d1661a5SPawel Jakub Dawidek 15812d1661a5SPawel Jakub Dawidek /* Parity component. */ 15822d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 15832d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 15842d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 15852d1661a5SPawel Jakub Dawidek src += atom; 15862d1661a5SPawel Jakub Dawidek for (n = 1; n < sc->sc_ndisks - 1; n++) { 15872d1661a5SPawel Jakub Dawidek g_raid3_xor(src, dst, dst, atom); 15882d1661a5SPawel Jakub Dawidek src += atom; 15892d1661a5SPawel Jakub Dawidek } 15902d1661a5SPawel Jakub Dawidek dst += atom; 15912d1661a5SPawel Jakub Dawidek } 15922d1661a5SPawel Jakub Dawidek } else { 15932d1661a5SPawel Jakub Dawidek /* Regular component. */ 15942d1661a5SPawel Jakub Dawidek src += atom * disk->d_no; 15952d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 15962d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 15972d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 15982d1661a5SPawel Jakub Dawidek src += sc->sc_sectorsize; 15992d1661a5SPawel Jakub Dawidek dst += atom; 16002d1661a5SPawel Jakub Dawidek } 16012d1661a5SPawel Jakub Dawidek } 16023650be51SPawel Jakub Dawidek bp->bio_driver1 = bp->bio_driver2 = NULL; 16033650be51SPawel Jakub Dawidek bp->bio_pflags = 0; 16042d1661a5SPawel Jakub Dawidek bp->bio_offset /= sc->sc_ndisks - 1; 16052d1661a5SPawel Jakub Dawidek bp->bio_length /= sc->sc_ndisks - 1; 16062d1661a5SPawel Jakub Dawidek bp->bio_cmd = BIO_WRITE; 16072d1661a5SPawel Jakub Dawidek bp->bio_cflags = 0; 16082d1661a5SPawel Jakub Dawidek bp->bio_children = bp->bio_inbed = 0; 16092d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 16103650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 16112d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 16122d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 161379e61493SPawel Jakub Dawidek cp->index++; 16142d1661a5SPawel Jakub Dawidek g_io_request(bp, cp); 16152d1661a5SPawel Jakub Dawidek return; 16162d1661a5SPawel Jakub Dawidek } 16172d1661a5SPawel Jakub Dawidek case BIO_WRITE: 1618d2fb9c62SPawel Jakub Dawidek { 1619d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 16203650be51SPawel Jakub Dawidek off_t boffset, moffset; 16213650be51SPawel Jakub Dawidek void *data; 16223650be51SPawel Jakub Dawidek int i; 1623d2fb9c62SPawel Jakub Dawidek 16242d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 16252d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 16262d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 16272d1661a5SPawel Jakub Dawidek bp->bio_error); 16282d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 1629ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 16302d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 16312d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 16322d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 16332d1661a5SPawel Jakub Dawidek return; 16342d1661a5SPawel Jakub Dawidek } 16352d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 1636d2fb9c62SPawel Jakub Dawidek sync = &disk->d_sync; 16373650be51SPawel Jakub Dawidek if (sync->ds_offset == sc->sc_mediasize / (sc->sc_ndisks - 1) || 16383650be51SPawel Jakub Dawidek sync->ds_consumer == NULL || 16393650be51SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 16403650be51SPawel Jakub Dawidek /* Don't send more synchronization requests. */ 16413650be51SPawel Jakub Dawidek sync->ds_inflight--; 16423650be51SPawel Jakub Dawidek if (sync->ds_bios != NULL) { 1643ef25813dSRuslan Ermilov i = (int)(uintptr_t)bp->bio_caller1; 16443650be51SPawel Jakub Dawidek sync->ds_bios[i] = NULL; 16453650be51SPawel Jakub Dawidek } 16463650be51SPawel Jakub Dawidek free(bp->bio_data, M_RAID3); 16472d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 16483650be51SPawel Jakub Dawidek if (sync->ds_inflight > 0) 1649d2fb9c62SPawel Jakub Dawidek return; 16503650be51SPawel Jakub Dawidek if (sync->ds_consumer == NULL || 16513650be51SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 16523650be51SPawel Jakub Dawidek return; 16533650be51SPawel Jakub Dawidek } 16542d1661a5SPawel Jakub Dawidek /* 16552d1661a5SPawel Jakub Dawidek * Disk up-to-date, activate it. 16562d1661a5SPawel Jakub Dawidek */ 16572d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_ACTIVE, 16582d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 16592d1661a5SPawel Jakub Dawidek return; 16603650be51SPawel Jakub Dawidek } 16613650be51SPawel Jakub Dawidek 16623650be51SPawel Jakub Dawidek /* Send next synchronization request. */ 16633650be51SPawel Jakub Dawidek data = bp->bio_data; 16643650be51SPawel Jakub Dawidek bzero(bp, sizeof(*bp)); 16653650be51SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 16663650be51SPawel Jakub Dawidek bp->bio_offset = sync->ds_offset * (sc->sc_ndisks - 1); 16673650be51SPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 16683650be51SPawel Jakub Dawidek sync->ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 16693650be51SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 16703650be51SPawel Jakub Dawidek bp->bio_data = data; 16713650be51SPawel Jakub Dawidek bp->bio_from = sync->ds_consumer; 16723650be51SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 16733650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 16743650be51SPawel Jakub Dawidek sync->ds_consumer->index++; 16752d1661a5SPawel Jakub Dawidek /* 16763650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a regular request. 16772d1661a5SPawel Jakub Dawidek */ 16783650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 16793650be51SPawel Jakub Dawidek g_raid3_sync_delay(sc, bp); 16803650be51SPawel Jakub Dawidek else 16813650be51SPawel Jakub Dawidek g_io_request(bp, sync->ds_consumer); 16823650be51SPawel Jakub Dawidek 16833650be51SPawel Jakub Dawidek /* Release delayed requests if possible. */ 16843650be51SPawel Jakub Dawidek g_raid3_regular_release(sc); 16853650be51SPawel Jakub Dawidek 16863650be51SPawel Jakub Dawidek /* Find the smallest offset. */ 16873650be51SPawel Jakub Dawidek moffset = sc->sc_mediasize; 16883650be51SPawel Jakub Dawidek for (i = 0; i < g_raid3_syncreqs; i++) { 16893650be51SPawel Jakub Dawidek bp = sync->ds_bios[i]; 16903650be51SPawel Jakub Dawidek boffset = bp->bio_offset; 16913650be51SPawel Jakub Dawidek if (bp->bio_cmd == BIO_WRITE) 16923650be51SPawel Jakub Dawidek boffset *= sc->sc_ndisks - 1; 16933650be51SPawel Jakub Dawidek if (boffset < moffset) 16943650be51SPawel Jakub Dawidek moffset = boffset; 16953650be51SPawel Jakub Dawidek } 16963650be51SPawel Jakub Dawidek if (sync->ds_offset_done + (MAXPHYS * 100) < moffset) { 16973650be51SPawel Jakub Dawidek /* Update offset_done on every 100 blocks. */ 16983650be51SPawel Jakub Dawidek sync->ds_offset_done = moffset; 16992d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 17002d1661a5SPawel Jakub Dawidek } 17012d1661a5SPawel Jakub Dawidek return; 1702d2fb9c62SPawel Jakub Dawidek } 17032d1661a5SPawel Jakub Dawidek default: 17042d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Invalid command here: %u (device=%s)", 17052d1661a5SPawel Jakub Dawidek bp->bio_cmd, sc->sc_name)); 17062d1661a5SPawel Jakub Dawidek break; 17072d1661a5SPawel Jakub Dawidek } 17082d1661a5SPawel Jakub Dawidek } 17092d1661a5SPawel Jakub Dawidek 17102d1661a5SPawel Jakub Dawidek static int 17112d1661a5SPawel Jakub Dawidek g_raid3_register_request(struct bio *pbp) 17122d1661a5SPawel Jakub Dawidek { 17132d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 17142d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 17152d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 1716ee40c7aaSPawel Jakub Dawidek struct bio *cbp, *tmpbp; 17172d1661a5SPawel Jakub Dawidek off_t offset, length; 1718fa6a7837SDavid E. O'Brien u_int n, ndisks; 1719dba915cfSPawel Jakub Dawidek int round_robin, verify; 17202d1661a5SPawel Jakub Dawidek 1721fa6a7837SDavid E. O'Brien ndisks = 0; 17222d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 17232d1661a5SPawel Jakub Dawidek if ((pbp->bio_cflags & G_RAID3_BIO_CFLAG_REGSYNC) != 0 && 17242d1661a5SPawel Jakub Dawidek sc->sc_syncdisk == NULL) { 17252d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, EIO); 17262d1661a5SPawel Jakub Dawidek return (0); 17272d1661a5SPawel Jakub Dawidek } 17282d1661a5SPawel Jakub Dawidek g_raid3_init_bio(pbp); 17292d1661a5SPawel Jakub Dawidek length = pbp->bio_length / (sc->sc_ndisks - 1); 17302d1661a5SPawel Jakub Dawidek offset = pbp->bio_offset / (sc->sc_ndisks - 1); 1731dba915cfSPawel Jakub Dawidek round_robin = verify = 0; 17322d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 17332d1661a5SPawel Jakub Dawidek case BIO_READ: 1734dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 1735dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1736dba915cfSPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_VERIFY; 1737dba915cfSPawel Jakub Dawidek verify = 1; 1738dba915cfSPawel Jakub Dawidek ndisks = sc->sc_ndisks; 1739dba915cfSPawel Jakub Dawidek } else { 1740dba915cfSPawel Jakub Dawidek verify = 0; 17412d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks - 1; 1742dba915cfSPawel Jakub Dawidek } 1743dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0 && 1744dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1745dba915cfSPawel Jakub Dawidek round_robin = 1; 1746dba915cfSPawel Jakub Dawidek } else { 1747dba915cfSPawel Jakub Dawidek round_robin = 0; 1748dba915cfSPawel Jakub Dawidek } 1749dba915cfSPawel Jakub Dawidek KASSERT(!round_robin || !verify, 1750dba915cfSPawel Jakub Dawidek ("ROUND-ROBIN and VERIFY are mutually exclusive.")); 1751f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = &sc->sc_disks[sc->sc_ndisks - 1]; 17522d1661a5SPawel Jakub Dawidek break; 17532d1661a5SPawel Jakub Dawidek case BIO_WRITE: 17542d1661a5SPawel Jakub Dawidek case BIO_DELETE: 17553650be51SPawel Jakub Dawidek /* 17563650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a synchronization 17573650be51SPawel Jakub Dawidek * request. 17583650be51SPawel Jakub Dawidek */ 17593650be51SPawel Jakub Dawidek if (g_raid3_sync_collision(sc, pbp)) { 17603650be51SPawel Jakub Dawidek g_raid3_regular_delay(sc, pbp); 17613650be51SPawel Jakub Dawidek return (0); 17623650be51SPawel Jakub Dawidek } 1763d2fb9c62SPawel Jakub Dawidek 17644d006a98SPawel Jakub Dawidek if (sc->sc_idle) 17654d006a98SPawel Jakub Dawidek g_raid3_unidle(sc); 17660962f942SPawel Jakub Dawidek else 176701f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 17684d006a98SPawel Jakub Dawidek 17692d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks; 17702d1661a5SPawel Jakub Dawidek break; 17712d1661a5SPawel Jakub Dawidek } 17722d1661a5SPawel Jakub Dawidek for (n = 0; n < ndisks; n++) { 17732d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 17742d1661a5SPawel Jakub Dawidek cbp = g_raid3_clone_bio(sc, pbp); 17752d1661a5SPawel Jakub Dawidek if (cbp == NULL) { 17762d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 17772d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 1778a65a0da2SPawel Jakub Dawidek /* 1779a65a0da2SPawel Jakub Dawidek * To prevent deadlock, we must run back up 1780a65a0da2SPawel Jakub Dawidek * with the ENOMEM for failed requests of any 1781a65a0da2SPawel Jakub Dawidek * of our consumers. Our own sync requests 1782a65a0da2SPawel Jakub Dawidek * can stick around, as they are finite. 1783a65a0da2SPawel Jakub Dawidek */ 1784a65a0da2SPawel Jakub Dawidek if ((pbp->bio_cflags & 1785a65a0da2SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_REGULAR) != 0) { 1786a65a0da2SPawel Jakub Dawidek g_io_deliver(pbp, ENOMEM); 1787a65a0da2SPawel Jakub Dawidek return (0); 1788a65a0da2SPawel Jakub Dawidek } 17892d1661a5SPawel Jakub Dawidek return (ENOMEM); 17902d1661a5SPawel Jakub Dawidek } 17912d1661a5SPawel Jakub Dawidek cbp->bio_offset = offset; 17922d1661a5SPawel Jakub Dawidek cbp->bio_length = length; 17932d1661a5SPawel Jakub Dawidek cbp->bio_done = g_raid3_done; 17942d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 17952d1661a5SPawel Jakub Dawidek case BIO_READ: 17962d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 17972d1661a5SPawel Jakub Dawidek /* 17982d1661a5SPawel Jakub Dawidek * Replace invalid component with the parity 17992d1661a5SPawel Jakub Dawidek * component. 18002d1661a5SPawel Jakub Dawidek */ 18012d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 18022d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 18032d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 1804f5a2f7feSPawel Jakub Dawidek } else if (round_robin && 1805f5a2f7feSPawel Jakub Dawidek disk->d_no == sc->sc_round_robin) { 1806f5a2f7feSPawel Jakub Dawidek /* 1807f5a2f7feSPawel Jakub Dawidek * In round-robin mode skip one data component 1808f5a2f7feSPawel Jakub Dawidek * and use parity component when reading. 1809f5a2f7feSPawel Jakub Dawidek */ 1810f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = disk; 1811f5a2f7feSPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 1812f5a2f7feSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1813f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin++; 1814f5a2f7feSPawel Jakub Dawidek round_robin = 0; 1815dba915cfSPawel Jakub Dawidek } else if (verify && disk->d_no == sc->sc_ndisks - 1) { 1816dba915cfSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 18172d1661a5SPawel Jakub Dawidek } 18182d1661a5SPawel Jakub Dawidek break; 18192d1661a5SPawel Jakub Dawidek case BIO_WRITE: 18202d1661a5SPawel Jakub Dawidek case BIO_DELETE: 18212d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 18222d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 18232d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 18242d1661a5SPawel Jakub Dawidek /* 18252d1661a5SPawel Jakub Dawidek * Active parity component, mark it as such. 18262d1661a5SPawel Jakub Dawidek */ 18272d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 18282d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_PARITY; 18292d1661a5SPawel Jakub Dawidek } 18302d1661a5SPawel Jakub Dawidek } else { 18312d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 18322d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 18332d1661a5SPawel Jakub Dawidek /* 18342d1661a5SPawel Jakub Dawidek * Parity component is not connected, 18352d1661a5SPawel Jakub Dawidek * so destroy its request. 18362d1661a5SPawel Jakub Dawidek */ 18372d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= 18382d1661a5SPawel Jakub Dawidek G_RAID3_BIO_PFLAG_NOPARITY; 18392d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 18402d1661a5SPawel Jakub Dawidek cbp = NULL; 18412d1661a5SPawel Jakub Dawidek } else { 18422d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 18432d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_NODISK; 18442d1661a5SPawel Jakub Dawidek disk = NULL; 18452d1661a5SPawel Jakub Dawidek } 18462d1661a5SPawel Jakub Dawidek } 18472d1661a5SPawel Jakub Dawidek break; 18482d1661a5SPawel Jakub Dawidek } 18492d1661a5SPawel Jakub Dawidek if (cbp != NULL) 18502d1661a5SPawel Jakub Dawidek cbp->bio_caller2 = disk; 18512d1661a5SPawel Jakub Dawidek } 18522d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 18532d1661a5SPawel Jakub Dawidek case BIO_READ: 1854f5a2f7feSPawel Jakub Dawidek if (round_robin) { 1855f5a2f7feSPawel Jakub Dawidek /* 1856f5a2f7feSPawel Jakub Dawidek * If we are in round-robin mode and 'round_robin' is 1857f5a2f7feSPawel Jakub Dawidek * still 1, it means, that we skipped parity component 1858f5a2f7feSPawel Jakub Dawidek * for this read and must reset sc_round_robin field. 1859f5a2f7feSPawel Jakub Dawidek */ 1860f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 1861f5a2f7feSPawel Jakub Dawidek } 1862ee40c7aaSPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 18632d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 18642d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 18652d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 18662d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 18673650be51SPawel Jakub Dawidek KASSERT(cp->acr >= 1 && cp->acw >= 1 && cp->ace >= 1, 18682d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", 18692d1661a5SPawel Jakub Dawidek cp->provider->name, cp->acr, cp->acw, cp->ace)); 187079e61493SPawel Jakub Dawidek cp->index++; 18712d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 18722d1661a5SPawel Jakub Dawidek } 18732d1661a5SPawel Jakub Dawidek break; 18742d1661a5SPawel Jakub Dawidek case BIO_WRITE: 18752d1661a5SPawel Jakub Dawidek case BIO_DELETE: 18762d1661a5SPawel Jakub Dawidek /* 18773650be51SPawel Jakub Dawidek * Put request onto inflight queue, so we can check if new 18783650be51SPawel Jakub Dawidek * synchronization requests don't collide with it. 18793650be51SPawel Jakub Dawidek */ 18803650be51SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_inflight, pbp); 18813650be51SPawel Jakub Dawidek 18823650be51SPawel Jakub Dawidek /* 18832d1661a5SPawel Jakub Dawidek * Bump syncid on first write. 18842d1661a5SPawel Jakub Dawidek */ 1885ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) { 1886a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 1887d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(sc); 18882d1661a5SPawel Jakub Dawidek } 18892d1661a5SPawel Jakub Dawidek g_raid3_scatter(pbp); 18902d1661a5SPawel Jakub Dawidek break; 18912d1661a5SPawel Jakub Dawidek } 18922d1661a5SPawel Jakub Dawidek return (0); 18932d1661a5SPawel Jakub Dawidek } 18942d1661a5SPawel Jakub Dawidek 18952d1661a5SPawel Jakub Dawidek static int 18962d1661a5SPawel Jakub Dawidek g_raid3_can_destroy(struct g_raid3_softc *sc) 18972d1661a5SPawel Jakub Dawidek { 18982d1661a5SPawel Jakub Dawidek struct g_geom *gp; 18992d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 19002d1661a5SPawel Jakub Dawidek 19012d1661a5SPawel Jakub Dawidek g_topology_assert(); 19022d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 190318486a5eSPawel Jakub Dawidek if (gp->softc == NULL) 190418486a5eSPawel Jakub Dawidek return (1); 19052d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 19062d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 19072d1661a5SPawel Jakub Dawidek return (0); 19082d1661a5SPawel Jakub Dawidek } 19092d1661a5SPawel Jakub Dawidek gp = sc->sc_sync.ds_geom; 19102d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 19112d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 19122d1661a5SPawel Jakub Dawidek return (0); 19132d1661a5SPawel Jakub Dawidek } 19142d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "No I/O requests for %s, it can be destroyed.", 19152d1661a5SPawel Jakub Dawidek sc->sc_name); 19162d1661a5SPawel Jakub Dawidek return (1); 19172d1661a5SPawel Jakub Dawidek } 19182d1661a5SPawel Jakub Dawidek 19192d1661a5SPawel Jakub Dawidek static int 19202d1661a5SPawel Jakub Dawidek g_raid3_try_destroy(struct g_raid3_softc *sc) 19212d1661a5SPawel Jakub Dawidek { 19222d1661a5SPawel Jakub Dawidek 19233650be51SPawel Jakub Dawidek g_topology_assert_not(); 19243650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 19253650be51SPawel Jakub Dawidek 19264ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 19274ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 19284ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 19294ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 19304ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 19314ed854e8SPawel Jakub Dawidek } 19324ed854e8SPawel Jakub Dawidek 19332d1661a5SPawel Jakub Dawidek g_topology_lock(); 19342d1661a5SPawel Jakub Dawidek if (!g_raid3_can_destroy(sc)) { 19352d1661a5SPawel Jakub Dawidek g_topology_unlock(); 19362d1661a5SPawel Jakub Dawidek return (0); 19372d1661a5SPawel Jakub Dawidek } 193818486a5eSPawel Jakub Dawidek sc->sc_geom->softc = NULL; 193918486a5eSPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 1940a245a548SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_WAIT) != 0) { 19412d1661a5SPawel Jakub Dawidek g_topology_unlock(); 19422d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 19432d1661a5SPawel Jakub Dawidek &sc->sc_worker); 19443650be51SPawel Jakub Dawidek /* Unlock sc_lock here, as it can be destroyed after wakeup. */ 19453650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 19462d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_worker); 19472d1661a5SPawel Jakub Dawidek sc->sc_worker = NULL; 19482d1661a5SPawel Jakub Dawidek } else { 19492d1661a5SPawel Jakub Dawidek g_topology_unlock(); 19503650be51SPawel Jakub Dawidek g_raid3_destroy_device(sc); 19512d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 19522d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 19532d1661a5SPawel Jakub Dawidek } 19542d1661a5SPawel Jakub Dawidek return (1); 19552d1661a5SPawel Jakub Dawidek } 19562d1661a5SPawel Jakub Dawidek 19572d1661a5SPawel Jakub Dawidek /* 19582d1661a5SPawel Jakub Dawidek * Worker thread. 19592d1661a5SPawel Jakub Dawidek */ 19602d1661a5SPawel Jakub Dawidek static void 19612d1661a5SPawel Jakub Dawidek g_raid3_worker(void *arg) 19622d1661a5SPawel Jakub Dawidek { 19632d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 19642d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 19652d1661a5SPawel Jakub Dawidek struct bio *bp; 19660962f942SPawel Jakub Dawidek int timeout; 19672d1661a5SPawel Jakub Dawidek 19682d1661a5SPawel Jakub Dawidek sc = arg; 196963710c4dSJohn Baldwin mtx_lock_spin(&sched_lock); 197063710c4dSJohn Baldwin sched_prio(curthread, PRIBIO); 197163710c4dSJohn Baldwin mtx_unlock_spin(&sched_lock); 19722d1661a5SPawel Jakub Dawidek 19733650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 19742d1661a5SPawel Jakub Dawidek for (;;) { 19752d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: Let's see...", __func__); 19762d1661a5SPawel Jakub Dawidek /* 19772d1661a5SPawel Jakub Dawidek * First take a look at events. 19782d1661a5SPawel Jakub Dawidek * This is important to handle events before any I/O requests. 19792d1661a5SPawel Jakub Dawidek */ 19802d1661a5SPawel Jakub Dawidek ep = g_raid3_event_get(sc); 19813650be51SPawel Jakub Dawidek if (ep != NULL) { 1982d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 19832d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) { 19842d1661a5SPawel Jakub Dawidek /* Update only device status. */ 19852d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, 19862d1661a5SPawel Jakub Dawidek "Running event for device %s.", 19872d1661a5SPawel Jakub Dawidek sc->sc_name); 19882d1661a5SPawel Jakub Dawidek ep->e_error = 0; 1989d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 1); 19902d1661a5SPawel Jakub Dawidek } else { 19912d1661a5SPawel Jakub Dawidek /* Update disk status. */ 19922d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Running event for disk %s.", 19932d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(ep->e_disk)); 19942d1661a5SPawel Jakub Dawidek ep->e_error = g_raid3_update_disk(ep->e_disk, 1995d97d5ee9SPawel Jakub Dawidek ep->e_state); 19962d1661a5SPawel Jakub Dawidek if (ep->e_error == 0) 1997d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 0); 19982d1661a5SPawel Jakub Dawidek } 19992d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) { 20002d1661a5SPawel Jakub Dawidek KASSERT(ep->e_error == 0, 20012d1661a5SPawel Jakub Dawidek ("Error cannot be handled.")); 20022d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 20032d1661a5SPawel Jakub Dawidek } else { 20042d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 20052d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 20062d1661a5SPawel Jakub Dawidek ep); 20072d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 20082d1661a5SPawel Jakub Dawidek wakeup(ep); 20092d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 20102d1661a5SPawel Jakub Dawidek } 20112d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 20122d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 20133650be51SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) { 20143650be51SPawel Jakub Dawidek curthread->td_pflags &= ~TDP_GEOM; 20153650be51SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Thread exiting."); 20162d1661a5SPawel Jakub Dawidek kthread_exit(0); 20172d1661a5SPawel Jakub Dawidek } 20183650be51SPawel Jakub Dawidek } 20192d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 1.", __func__); 20202d1661a5SPawel Jakub Dawidek continue; 20212d1661a5SPawel Jakub Dawidek } 20222d1661a5SPawel Jakub Dawidek /* 20230962f942SPawel Jakub Dawidek * Check if we can mark array as CLEAN and if we can't take 20240962f942SPawel Jakub Dawidek * how much seconds should we wait. 20250962f942SPawel Jakub Dawidek */ 20263650be51SPawel Jakub Dawidek timeout = g_raid3_idle(sc, -1); 20270962f942SPawel Jakub Dawidek /* 20282d1661a5SPawel Jakub Dawidek * Now I/O requests. 20292d1661a5SPawel Jakub Dawidek */ 20302d1661a5SPawel Jakub Dawidek /* Get first request from the queue. */ 20312d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 20322d1661a5SPawel Jakub Dawidek bp = bioq_first(&sc->sc_queue); 20332d1661a5SPawel Jakub Dawidek if (bp == NULL) { 20342d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 20352d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 20362d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 20373650be51SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) { 20383650be51SPawel Jakub Dawidek curthread->td_pflags &= ~TDP_GEOM; 2039d7fad9f6SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Thread exiting."); 20402d1661a5SPawel Jakub Dawidek kthread_exit(0); 20413650be51SPawel Jakub Dawidek } 20422d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 20432d1661a5SPawel Jakub Dawidek } 20443650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 2045a2fe5c66SPawel Jakub Dawidek /* 2046a2fe5c66SPawel Jakub Dawidek * XXX: We can miss an event here, because an event 2047a2fe5c66SPawel Jakub Dawidek * can be added without sx-device-lock and without 2048a2fe5c66SPawel Jakub Dawidek * mtx-queue-lock. Maybe I should just stop using 2049a2fe5c66SPawel Jakub Dawidek * dedicated mutex for events synchronization and 2050a2fe5c66SPawel Jakub Dawidek * stick with the queue lock? 2051a2fe5c66SPawel Jakub Dawidek * The event will hang here until next I/O request 2052a2fe5c66SPawel Jakub Dawidek * or next event is received. 2053a2fe5c66SPawel Jakub Dawidek */ 20540962f942SPawel Jakub Dawidek MSLEEP(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, "r3:w1", 20550962f942SPawel Jakub Dawidek timeout * hz); 20563650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 20579bb09163SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 4.", __func__); 20582d1661a5SPawel Jakub Dawidek continue; 20592d1661a5SPawel Jakub Dawidek } 206084edb86dSPawel Jakub Dawidek process: 20612d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 20622d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 20632d1661a5SPawel Jakub Dawidek 20643650be51SPawel Jakub Dawidek if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) != 0) 20652d1661a5SPawel Jakub Dawidek g_raid3_regular_request(bp); 20663650be51SPawel Jakub Dawidek else if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) != 0) 20672d1661a5SPawel Jakub Dawidek g_raid3_sync_request(bp); 206884edb86dSPawel Jakub Dawidek else if (g_raid3_register_request(bp) != 0) { 20692d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 20703650be51SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 207184edb86dSPawel Jakub Dawidek /* 207284edb86dSPawel Jakub Dawidek * We are short in memory, let see if there are finished 207384edb86dSPawel Jakub Dawidek * request we can free. 207484edb86dSPawel Jakub Dawidek */ 207584edb86dSPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 207684edb86dSPawel Jakub Dawidek if (bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) 207784edb86dSPawel Jakub Dawidek goto process; 20782d1661a5SPawel Jakub Dawidek } 207984edb86dSPawel Jakub Dawidek /* 208084edb86dSPawel Jakub Dawidek * No finished regular request, so at least keep 208184edb86dSPawel Jakub Dawidek * synchronization running. 208284edb86dSPawel Jakub Dawidek */ 208384edb86dSPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 208484edb86dSPawel Jakub Dawidek if (bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) 208584edb86dSPawel Jakub Dawidek goto process; 208684edb86dSPawel Jakub Dawidek } 208784edb86dSPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 208884edb86dSPawel Jakub Dawidek MSLEEP(&sc->sc_queue, &sc->sc_queue_mtx, PRIBIO | PDROP, 208984edb86dSPawel Jakub Dawidek "r3:lowmem", hz / 10); 209084edb86dSPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 20912d1661a5SPawel Jakub Dawidek } 2092d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 9.", __func__); 20932d1661a5SPawel Jakub Dawidek } 20942d1661a5SPawel Jakub Dawidek } 20952d1661a5SPawel Jakub Dawidek 20962d1661a5SPawel Jakub Dawidek static void 20970962f942SPawel Jakub Dawidek g_raid3_update_idle(struct g_raid3_softc *sc, struct g_raid3_disk *disk) 20982d1661a5SPawel Jakub Dawidek { 20992d1661a5SPawel Jakub Dawidek 21003650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 21010962f942SPawel Jakub Dawidek if (!sc->sc_idle && (disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) == 0) { 21022d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 21033650be51SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 21042d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 21050962f942SPawel Jakub Dawidek } else if (sc->sc_idle && 21060962f942SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) { 21072d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 21083650be51SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 21092d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 21102d1661a5SPawel Jakub Dawidek } 21112d1661a5SPawel Jakub Dawidek } 21122d1661a5SPawel Jakub Dawidek 21132d1661a5SPawel Jakub Dawidek static void 21142d1661a5SPawel Jakub Dawidek g_raid3_sync_start(struct g_raid3_softc *sc) 21152d1661a5SPawel Jakub Dawidek { 21162d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 21173650be51SPawel Jakub Dawidek struct g_consumer *cp; 21183650be51SPawel Jakub Dawidek struct bio *bp; 21192d1661a5SPawel Jakub Dawidek int error; 21202d1661a5SPawel Jakub Dawidek u_int n; 21212d1661a5SPawel Jakub Dawidek 21223650be51SPawel Jakub Dawidek g_topology_assert_not(); 21233650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 21242d1661a5SPawel Jakub Dawidek 21252d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 21262d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 21272d1661a5SPawel Jakub Dawidek sc->sc_state)); 21282d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_syncdisk == NULL, ("Syncdisk is not NULL (%s, %u).", 21292d1661a5SPawel Jakub Dawidek sc->sc_name, sc->sc_state)); 21302d1661a5SPawel Jakub Dawidek disk = NULL; 21312d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 21322d1661a5SPawel Jakub Dawidek if (sc->sc_disks[n].d_state != G_RAID3_DISK_STATE_SYNCHRONIZING) 21332d1661a5SPawel Jakub Dawidek continue; 21342d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 21352d1661a5SPawel Jakub Dawidek break; 21362d1661a5SPawel Jakub Dawidek } 21372d1661a5SPawel Jakub Dawidek if (disk == NULL) 21382d1661a5SPawel Jakub Dawidek return; 21392d1661a5SPawel Jakub Dawidek 21403650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 21413650be51SPawel Jakub Dawidek g_topology_lock(); 21423650be51SPawel Jakub Dawidek cp = g_new_consumer(sc->sc_sync.ds_geom); 21433650be51SPawel Jakub Dawidek error = g_attach(cp, sc->sc_provider); 21443650be51SPawel Jakub Dawidek KASSERT(error == 0, 21453650be51SPawel Jakub Dawidek ("Cannot attach to %s (error=%d).", sc->sc_name, error)); 21463650be51SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 21473650be51SPawel Jakub Dawidek KASSERT(error == 0, ("Cannot open %s (error=%d).", sc->sc_name, error)); 21483650be51SPawel Jakub Dawidek g_topology_unlock(); 21493650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 21503650be51SPawel Jakub Dawidek 21512d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s.", sc->sc_name, 21522d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 21532d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 21542d1661a5SPawel Jakub Dawidek KASSERT(disk->d_sync.ds_consumer == NULL, 21552d1661a5SPawel Jakub Dawidek ("Sync consumer already exists (device=%s, disk=%s).", 21562d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk))); 21573650be51SPawel Jakub Dawidek 21583650be51SPawel Jakub Dawidek disk->d_sync.ds_consumer = cp; 21592d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer->private = disk; 216079e61493SPawel Jakub Dawidek disk->d_sync.ds_consumer->index = 0; 21612d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = disk; 21623650be51SPawel Jakub Dawidek 21633650be51SPawel Jakub Dawidek /* 21643650be51SPawel Jakub Dawidek * Allocate memory for synchronization bios and initialize them. 21653650be51SPawel Jakub Dawidek */ 21663650be51SPawel Jakub Dawidek disk->d_sync.ds_bios = malloc(sizeof(struct bio *) * g_raid3_syncreqs, 21673650be51SPawel Jakub Dawidek M_RAID3, M_WAITOK); 21683650be51SPawel Jakub Dawidek for (n = 0; n < g_raid3_syncreqs; n++) { 21693650be51SPawel Jakub Dawidek bp = g_alloc_bio(); 21703650be51SPawel Jakub Dawidek disk->d_sync.ds_bios[n] = bp; 21713650be51SPawel Jakub Dawidek bp->bio_parent = NULL; 21723650be51SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 21733650be51SPawel Jakub Dawidek bp->bio_data = malloc(MAXPHYS, M_RAID3, M_WAITOK); 21743650be51SPawel Jakub Dawidek bp->bio_cflags = 0; 21753650be51SPawel Jakub Dawidek bp->bio_offset = disk->d_sync.ds_offset * (sc->sc_ndisks - 1); 21763650be51SPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 21773650be51SPawel Jakub Dawidek disk->d_sync.ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 21783650be51SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 21793650be51SPawel Jakub Dawidek bp->bio_from = disk->d_sync.ds_consumer; 21803650be51SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 2181ef25813dSRuslan Ermilov bp->bio_caller1 = (void *)(uintptr_t)n; 21823650be51SPawel Jakub Dawidek } 21833650be51SPawel Jakub Dawidek 21843650be51SPawel Jakub Dawidek /* Set the number of in-flight synchronization requests. */ 21853650be51SPawel Jakub Dawidek disk->d_sync.ds_inflight = g_raid3_syncreqs; 21863650be51SPawel Jakub Dawidek 21873650be51SPawel Jakub Dawidek /* 21883650be51SPawel Jakub Dawidek * Fire off first synchronization requests. 21893650be51SPawel Jakub Dawidek */ 21903650be51SPawel Jakub Dawidek for (n = 0; n < g_raid3_syncreqs; n++) { 21913650be51SPawel Jakub Dawidek bp = disk->d_sync.ds_bios[n]; 21923650be51SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 21933650be51SPawel Jakub Dawidek disk->d_sync.ds_consumer->index++; 21943650be51SPawel Jakub Dawidek /* 21953650be51SPawel Jakub Dawidek * Delay the request if it is colliding with a regular request. 21963650be51SPawel Jakub Dawidek */ 21973650be51SPawel Jakub Dawidek if (g_raid3_regular_collision(sc, bp)) 21983650be51SPawel Jakub Dawidek g_raid3_sync_delay(sc, bp); 21993650be51SPawel Jakub Dawidek else 22003650be51SPawel Jakub Dawidek g_io_request(bp, disk->d_sync.ds_consumer); 22013650be51SPawel Jakub Dawidek } 22022d1661a5SPawel Jakub Dawidek } 22032d1661a5SPawel Jakub Dawidek 22042d1661a5SPawel Jakub Dawidek /* 22052d1661a5SPawel Jakub Dawidek * Stop synchronization process. 22062d1661a5SPawel Jakub Dawidek * type: 0 - synchronization finished 22072d1661a5SPawel Jakub Dawidek * 1 - synchronization stopped 22082d1661a5SPawel Jakub Dawidek */ 22092d1661a5SPawel Jakub Dawidek static void 22102d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(struct g_raid3_softc *sc, int type) 22112d1661a5SPawel Jakub Dawidek { 22122d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 22133650be51SPawel Jakub Dawidek struct g_consumer *cp; 22142d1661a5SPawel Jakub Dawidek 22153650be51SPawel Jakub Dawidek g_topology_assert_not(); 22163650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 22173650be51SPawel Jakub Dawidek 22182d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 22192d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 22202d1661a5SPawel Jakub Dawidek sc->sc_state)); 22212d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 22222d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = NULL; 22232d1661a5SPawel Jakub Dawidek KASSERT(disk != NULL, ("No disk was synchronized (%s).", sc->sc_name)); 22242d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 22252d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 22262d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 22272d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_consumer == NULL) 22282d1661a5SPawel Jakub Dawidek return; 22292d1661a5SPawel Jakub Dawidek 22302d1661a5SPawel Jakub Dawidek if (type == 0) { 22312d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s finished.", 22323650be51SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 22332d1661a5SPawel Jakub Dawidek } else /* if (type == 1) */ { 22342d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s stopped.", 22353650be51SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 22362d1661a5SPawel Jakub Dawidek } 22373650be51SPawel Jakub Dawidek free(disk->d_sync.ds_bios, M_RAID3); 22383650be51SPawel Jakub Dawidek disk->d_sync.ds_bios = NULL; 22393650be51SPawel Jakub Dawidek cp = disk->d_sync.ds_consumer; 22402d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 22412d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 22423650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); /* Avoid recursion on sc_lock. */ 22433650be51SPawel Jakub Dawidek g_topology_lock(); 22443650be51SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cp); 22453650be51SPawel Jakub Dawidek g_topology_unlock(); 22463650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 22472d1661a5SPawel Jakub Dawidek } 22482d1661a5SPawel Jakub Dawidek 22492d1661a5SPawel Jakub Dawidek static void 22502d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(struct g_raid3_softc *sc) 22512d1661a5SPawel Jakub Dawidek { 22522d1661a5SPawel Jakub Dawidek struct g_provider *pp; 22532d1661a5SPawel Jakub Dawidek 22543650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_LOCKED); 22552d1661a5SPawel Jakub Dawidek 22563650be51SPawel Jakub Dawidek g_topology_lock(); 22572d1661a5SPawel Jakub Dawidek pp = g_new_providerf(sc->sc_geom, "raid3/%s", sc->sc_name); 22582d1661a5SPawel Jakub Dawidek pp->mediasize = sc->sc_mediasize; 22592d1661a5SPawel Jakub Dawidek pp->sectorsize = sc->sc_sectorsize; 22602d1661a5SPawel Jakub Dawidek sc->sc_provider = pp; 22612d1661a5SPawel Jakub Dawidek g_error_provider(pp, 0); 22623650be51SPawel Jakub Dawidek g_topology_unlock(); 22632d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s launched.", sc->sc_name, 22642d1661a5SPawel Jakub Dawidek pp->name); 22652d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED) 22662d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 22672d1661a5SPawel Jakub Dawidek } 22682d1661a5SPawel Jakub Dawidek 22692d1661a5SPawel Jakub Dawidek static void 22702d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(struct g_raid3_softc *sc) 22712d1661a5SPawel Jakub Dawidek { 22722d1661a5SPawel Jakub Dawidek struct bio *bp; 22732d1661a5SPawel Jakub Dawidek 22743650be51SPawel Jakub Dawidek g_topology_assert_not(); 22752d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider != NULL, ("NULL provider (device=%s).", 22762d1661a5SPawel Jakub Dawidek sc->sc_name)); 22772d1661a5SPawel Jakub Dawidek 22783650be51SPawel Jakub Dawidek g_topology_lock(); 22792d1661a5SPawel Jakub Dawidek g_error_provider(sc->sc_provider, ENXIO); 22802d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 22812d1661a5SPawel Jakub Dawidek while ((bp = bioq_first(&sc->sc_queue)) != NULL) { 22822d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 22832d1661a5SPawel Jakub Dawidek g_io_deliver(bp, ENXIO); 22842d1661a5SPawel Jakub Dawidek } 22852d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 22862d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s destroyed.", sc->sc_name, 22872d1661a5SPawel Jakub Dawidek sc->sc_provider->name); 22882d1661a5SPawel Jakub Dawidek sc->sc_provider->flags |= G_PF_WITHER; 22892d1661a5SPawel Jakub Dawidek g_orphan_provider(sc->sc_provider, ENXIO); 22903650be51SPawel Jakub Dawidek g_topology_unlock(); 22912d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 22922d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 22932d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 22942d1661a5SPawel Jakub Dawidek } 22952d1661a5SPawel Jakub Dawidek 22962d1661a5SPawel Jakub Dawidek static void 22972d1661a5SPawel Jakub Dawidek g_raid3_go(void *arg) 22982d1661a5SPawel Jakub Dawidek { 22992d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 23002d1661a5SPawel Jakub Dawidek 23012d1661a5SPawel Jakub Dawidek sc = arg; 23022d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Force device %s start due to timeout.", sc->sc_name); 23032d1661a5SPawel Jakub Dawidek g_raid3_event_send(sc, 0, 23042d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT | G_RAID3_EVENT_DEVICE); 23052d1661a5SPawel Jakub Dawidek } 23062d1661a5SPawel Jakub Dawidek 23072d1661a5SPawel Jakub Dawidek static u_int 23082d1661a5SPawel Jakub Dawidek g_raid3_determine_state(struct g_raid3_disk *disk) 23092d1661a5SPawel Jakub Dawidek { 23102d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 23112d1661a5SPawel Jakub Dawidek u_int state; 23122d1661a5SPawel Jakub Dawidek 23132d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 23142d1661a5SPawel Jakub Dawidek if (sc->sc_syncid == disk->d_sync.ds_syncid) { 23152d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 23162d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) == 0) { 23172d1661a5SPawel Jakub Dawidek /* Disk does not need synchronization. */ 23182d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_ACTIVE; 23192d1661a5SPawel Jakub Dawidek } else { 23202d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 23212d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 23222d1661a5SPawel Jakub Dawidek (disk->d_flags & 23232d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 23242d1661a5SPawel Jakub Dawidek /* 23252d1661a5SPawel Jakub Dawidek * We can start synchronization from 23262d1661a5SPawel Jakub Dawidek * the stored offset. 23272d1661a5SPawel Jakub Dawidek */ 23282d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 23292d1661a5SPawel Jakub Dawidek } else { 23302d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 23312d1661a5SPawel Jakub Dawidek } 23322d1661a5SPawel Jakub Dawidek } 23332d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < sc->sc_syncid) { 23342d1661a5SPawel Jakub Dawidek /* 23352d1661a5SPawel Jakub Dawidek * Reset all synchronization data for this disk, 23362d1661a5SPawel Jakub Dawidek * because if it even was synchronized, it was 23372d1661a5SPawel Jakub Dawidek * synchronized to disks with different syncid. 23382d1661a5SPawel Jakub Dawidek */ 23392d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 23402d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 23412d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 23422d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 23432d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 23442d1661a5SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 23452d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 23462d1661a5SPawel Jakub Dawidek } else { 23472d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 23482d1661a5SPawel Jakub Dawidek } 23492d1661a5SPawel Jakub Dawidek } else /* if (sc->sc_syncid < disk->d_sync.ds_syncid) */ { 23502d1661a5SPawel Jakub Dawidek /* 23512d1661a5SPawel Jakub Dawidek * Not good, NOT GOOD! 23522d1661a5SPawel Jakub Dawidek * It means that device was started on stale disks 23532d1661a5SPawel Jakub Dawidek * and more fresh disk just arrive. 23543c57a41dSPawel Jakub Dawidek * If there were writes, device is broken, sorry. 23552d1661a5SPawel Jakub Dawidek * I think the best choice here is don't touch 2356776fc0e9SYaroslav Tykhiy * this disk and inform the user loudly. 23572d1661a5SPawel Jakub Dawidek */ 23582d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s was started before the freshest " 23592d1661a5SPawel Jakub Dawidek "disk (%s) arrives!! It will not be connected to the " 23602d1661a5SPawel Jakub Dawidek "running device.", sc->sc_name, 23612d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 23622d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 23632d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_NONE; 23642d1661a5SPawel Jakub Dawidek /* Return immediately, because disk was destroyed. */ 23652d1661a5SPawel Jakub Dawidek return (state); 23662d1661a5SPawel Jakub Dawidek } 23672d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "State for %s disk: %s.", 23682d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(state)); 23692d1661a5SPawel Jakub Dawidek return (state); 23702d1661a5SPawel Jakub Dawidek } 23712d1661a5SPawel Jakub Dawidek 23722d1661a5SPawel Jakub Dawidek /* 23732d1661a5SPawel Jakub Dawidek * Update device state. 23742d1661a5SPawel Jakub Dawidek */ 23752d1661a5SPawel Jakub Dawidek static void 2376d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(struct g_raid3_softc *sc, boolean_t force) 23772d1661a5SPawel Jakub Dawidek { 23782d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 23792d1661a5SPawel Jakub Dawidek u_int state; 23802d1661a5SPawel Jakub Dawidek 23813650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 23822d1661a5SPawel Jakub Dawidek 23832d1661a5SPawel Jakub Dawidek switch (sc->sc_state) { 23842d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_STARTING: 23852d1661a5SPawel Jakub Dawidek { 2386a245a548SPawel Jakub Dawidek u_int n, ndirty, ndisks, genid, syncid; 23872d1661a5SPawel Jakub Dawidek 23882d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider == NULL, 23892d1661a5SPawel Jakub Dawidek ("Non-NULL provider in STARTING state (%s).", sc->sc_name)); 23902d1661a5SPawel Jakub Dawidek /* 23912d1661a5SPawel Jakub Dawidek * Are we ready? We are, if all disks are connected or 23922d1661a5SPawel Jakub Dawidek * one disk is missing and 'force' is true. 23932d1661a5SPawel Jakub Dawidek */ 23942d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, -1) + force == sc->sc_ndisks) { 23952d1661a5SPawel Jakub Dawidek if (!force) 23962d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 23972d1661a5SPawel Jakub Dawidek } else { 23982d1661a5SPawel Jakub Dawidek if (force) { 23992d1661a5SPawel Jakub Dawidek /* 24002d1661a5SPawel Jakub Dawidek * Timeout expired, so destroy device. 24012d1661a5SPawel Jakub Dawidek */ 24022d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 24034ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", 24044ed854e8SPawel Jakub Dawidek __LINE__, sc->sc_rootmount); 24054ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 24064ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 24072d1661a5SPawel Jakub Dawidek } 24082d1661a5SPawel Jakub Dawidek return; 24092d1661a5SPawel Jakub Dawidek } 24102d1661a5SPawel Jakub Dawidek 24112d1661a5SPawel Jakub Dawidek /* 2412a245a548SPawel Jakub Dawidek * Find the biggest genid. 2413a245a548SPawel Jakub Dawidek */ 2414a245a548SPawel Jakub Dawidek genid = 0; 2415a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2416a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2417a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2418a245a548SPawel Jakub Dawidek continue; 2419a245a548SPawel Jakub Dawidek if (disk->d_genid > genid) 2420a245a548SPawel Jakub Dawidek genid = disk->d_genid; 2421a245a548SPawel Jakub Dawidek } 2422a245a548SPawel Jakub Dawidek sc->sc_genid = genid; 2423a245a548SPawel Jakub Dawidek /* 2424a245a548SPawel Jakub Dawidek * Remove all disks without the biggest genid. 2425a245a548SPawel Jakub Dawidek */ 2426a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2427a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2428a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2429a245a548SPawel Jakub Dawidek continue; 2430a245a548SPawel Jakub Dawidek if (disk->d_genid < genid) { 2431a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2432a245a548SPawel Jakub Dawidek "Component %s (device %s) broken, skipping.", 2433a245a548SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 2434a245a548SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 2435a245a548SPawel Jakub Dawidek } 2436a245a548SPawel Jakub Dawidek } 2437a245a548SPawel Jakub Dawidek 2438a245a548SPawel Jakub Dawidek /* 24392d1661a5SPawel Jakub Dawidek * There must be at least 'sc->sc_ndisks - 1' components 24402d1661a5SPawel Jakub Dawidek * with the same syncid and without SYNCHRONIZING flag. 24412d1661a5SPawel Jakub Dawidek */ 24422d1661a5SPawel Jakub Dawidek 24432d1661a5SPawel Jakub Dawidek /* 24442d1661a5SPawel Jakub Dawidek * Find the biggest syncid, number of valid components and 24452d1661a5SPawel Jakub Dawidek * number of dirty components. 24462d1661a5SPawel Jakub Dawidek */ 24472d1661a5SPawel Jakub Dawidek ndirty = ndisks = syncid = 0; 24482d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 24492d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 24502d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 24512d1661a5SPawel Jakub Dawidek continue; 24522d1661a5SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) 24532d1661a5SPawel Jakub Dawidek ndirty++; 24542d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_syncid > syncid) { 24552d1661a5SPawel Jakub Dawidek syncid = disk->d_sync.ds_syncid; 24562d1661a5SPawel Jakub Dawidek ndisks = 0; 24572d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < syncid) { 24582d1661a5SPawel Jakub Dawidek continue; 24592d1661a5SPawel Jakub Dawidek } 24602d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 24612d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) != 0) { 24622d1661a5SPawel Jakub Dawidek continue; 24632d1661a5SPawel Jakub Dawidek } 24642d1661a5SPawel Jakub Dawidek ndisks++; 24652d1661a5SPawel Jakub Dawidek } 24662d1661a5SPawel Jakub Dawidek /* 24672d1661a5SPawel Jakub Dawidek * Do we have enough valid components? 24682d1661a5SPawel Jakub Dawidek */ 24692d1661a5SPawel Jakub Dawidek if (ndisks + 1 < sc->sc_ndisks) { 24702d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 24712d1661a5SPawel Jakub Dawidek "Device %s is broken, too few valid components.", 24722d1661a5SPawel Jakub Dawidek sc->sc_name); 24732d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 24742d1661a5SPawel Jakub Dawidek return; 24752d1661a5SPawel Jakub Dawidek } 24762d1661a5SPawel Jakub Dawidek /* 24772d1661a5SPawel Jakub Dawidek * If there is one DIRTY component and all disks are present, 24782d1661a5SPawel Jakub Dawidek * mark it for synchronization. If there is more than one DIRTY 24792d1661a5SPawel Jakub Dawidek * component, mark parity component for synchronization. 24802d1661a5SPawel Jakub Dawidek */ 24812d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks && ndirty == 1) { 24822d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 24832d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 24842d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 24852d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_DIRTY) == 0) { 24862d1661a5SPawel Jakub Dawidek continue; 24872d1661a5SPawel Jakub Dawidek } 24882d1661a5SPawel Jakub Dawidek disk->d_flags |= 24892d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING; 24902d1661a5SPawel Jakub Dawidek } 24912d1661a5SPawel Jakub Dawidek } else if (ndisks == sc->sc_ndisks && ndirty > 1) { 24922d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 24932d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 24942d1661a5SPawel Jakub Dawidek } 24952d1661a5SPawel Jakub Dawidek 24962d1661a5SPawel Jakub Dawidek sc->sc_syncid = syncid; 24972d1661a5SPawel Jakub Dawidek if (force) { 24982d1661a5SPawel Jakub Dawidek /* Remember to bump syncid on first write. */ 2499ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 25002d1661a5SPawel Jakub Dawidek } 25012d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks) 25022d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 25032d1661a5SPawel Jakub Dawidek else /* if (ndisks == sc->sc_ndisks - 1) */ 25042d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 25052d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s state changed from %s to %s.", 25062d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 25072d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 25082d1661a5SPawel Jakub Dawidek sc->sc_state = state; 25092d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 25102d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 25112d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 25122d1661a5SPawel Jakub Dawidek continue; 25132d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 25142d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, state, G_RAID3_EVENT_DONTWAIT); 2515a245a548SPawel Jakub Dawidek if (state == G_RAID3_DISK_STATE_STALE) 2516ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 25172d1661a5SPawel Jakub Dawidek } 25182d1661a5SPawel Jakub Dawidek break; 25192d1661a5SPawel Jakub Dawidek } 25202d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_DEGRADED: 25212d1661a5SPawel Jakub Dawidek /* 2522ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 25232d1661a5SPawel Jakub Dawidek */ 2524ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2525a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2526a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2527a245a548SPawel Jakub Dawidek } 2528a245a548SPawel Jakub Dawidek 25292d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 25302d1661a5SPawel Jakub Dawidek return; 25312d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < 25322d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 25332d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 25342d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 25352d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 25362d1661a5SPawel Jakub Dawidek return; 25372d1661a5SPawel Jakub Dawidek } 25382d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 25392d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 25402d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 25412d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 25422d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 25432d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 25442d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 25452d1661a5SPawel Jakub Dawidek sc->sc_state = state; 25462d1661a5SPawel Jakub Dawidek } 25472d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 25482d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 25494ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 25504ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 25514ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 25524ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 25534ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 25544ed854e8SPawel Jakub Dawidek } 25552d1661a5SPawel Jakub Dawidek break; 25562d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_COMPLETE: 25572d1661a5SPawel Jakub Dawidek /* 2558ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 25592d1661a5SPawel Jakub Dawidek */ 2560ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2561a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2562a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2563a245a548SPawel Jakub Dawidek } 2564a245a548SPawel Jakub Dawidek 25652d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 25662d1661a5SPawel Jakub Dawidek return; 25672d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) >= 25682d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1, 25692d1661a5SPawel Jakub Dawidek ("Too few ACTIVE components in COMPLETE state (device %s).", 25702d1661a5SPawel Jakub Dawidek sc->sc_name)); 25712d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 25722d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 25732d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 25742d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 25752d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 25762d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 25772d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 25782d1661a5SPawel Jakub Dawidek sc->sc_state = state; 25792d1661a5SPawel Jakub Dawidek } 25802d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 25812d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 25824ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 25834ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 25844ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 25854ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 25864ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 25874ed854e8SPawel Jakub Dawidek } 25882d1661a5SPawel Jakub Dawidek break; 25892d1661a5SPawel Jakub Dawidek default: 25902d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s).", sc->sc_name, 25912d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state))); 25922d1661a5SPawel Jakub Dawidek break; 25932d1661a5SPawel Jakub Dawidek } 25942d1661a5SPawel Jakub Dawidek } 25952d1661a5SPawel Jakub Dawidek 25962d1661a5SPawel Jakub Dawidek /* 25972d1661a5SPawel Jakub Dawidek * Update disk state and device state if needed. 25982d1661a5SPawel Jakub Dawidek */ 25992d1661a5SPawel Jakub Dawidek #define DISK_STATE_CHANGED() G_RAID3_DEBUG(1, \ 26002d1661a5SPawel Jakub Dawidek "Disk %s state changed from %s to %s (device %s).", \ 26012d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), \ 26022d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state), \ 26032d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state), sc->sc_name) 26042d1661a5SPawel Jakub Dawidek static int 2605d97d5ee9SPawel Jakub Dawidek g_raid3_update_disk(struct g_raid3_disk *disk, u_int state) 26062d1661a5SPawel Jakub Dawidek { 26072d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 26082d1661a5SPawel Jakub Dawidek 26092d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 26103650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 26113650be51SPawel Jakub Dawidek 26122d1661a5SPawel Jakub Dawidek again: 26132d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Changing disk %s state from %s to %s.", 26142d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(disk->d_state), 26152d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state)); 26162d1661a5SPawel Jakub Dawidek switch (state) { 26172d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 26182d1661a5SPawel Jakub Dawidek /* 26192d1661a5SPawel Jakub Dawidek * Possible scenarios: 26202d1661a5SPawel Jakub Dawidek * 1. New disk arrive. 26212d1661a5SPawel Jakub Dawidek */ 26222d1661a5SPawel Jakub Dawidek /* Previous state should be NONE. */ 26232d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NONE, 26242d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 26252d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 26262d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 26272d1661a5SPawel Jakub Dawidek 26282d1661a5SPawel Jakub Dawidek disk->d_state = state; 26292d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s detected.", 26302d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 26312d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) 26322d1661a5SPawel Jakub Dawidek break; 26332d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 26342d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 26352d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 26362d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 26372d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 26382d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 26392d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 26402d1661a5SPawel Jakub Dawidek if (state != G_RAID3_DISK_STATE_NONE) 26412d1661a5SPawel Jakub Dawidek goto again; 26422d1661a5SPawel Jakub Dawidek break; 26432d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 26442d1661a5SPawel Jakub Dawidek /* 26452d1661a5SPawel Jakub Dawidek * Possible scenarios: 26462d1661a5SPawel Jakub Dawidek * 1. New disk does not need synchronization. 26472d1661a5SPawel Jakub Dawidek * 2. Synchronization process finished successfully. 26482d1661a5SPawel Jakub Dawidek */ 26492d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 26502d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 26512d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 26522d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 26532d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 26542d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 26552d1661a5SPawel Jakub Dawidek /* Previous state should be NEW or SYNCHRONIZING. */ 26562d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW || 26572d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 26582d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 26592d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 26602d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 26612d1661a5SPawel Jakub Dawidek 2662bf31327cSPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 26632d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_SYNCHRONIZING; 26642d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_FORCE_SYNC; 26652d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 0); 26662d1661a5SPawel Jakub Dawidek } 26672d1661a5SPawel Jakub Dawidek disk->d_state = state; 26682d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 26692d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 26700962f942SPawel Jakub Dawidek g_raid3_update_idle(sc, disk); 2671bf31327cSPawel Jakub Dawidek g_raid3_update_metadata(disk); 26722d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s activated.", 26732d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 26742d1661a5SPawel Jakub Dawidek break; 26752d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 26762d1661a5SPawel Jakub Dawidek /* 26772d1661a5SPawel Jakub Dawidek * Possible scenarios: 26782d1661a5SPawel Jakub Dawidek * 1. Stale disk was connected. 26792d1661a5SPawel Jakub Dawidek */ 26802d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 26812d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 26822d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 26832d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 26842d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 26852d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 26862d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 26872d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 26882d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 26892d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 26902d1661a5SPawel Jakub Dawidek /* 26912d1661a5SPawel Jakub Dawidek * STALE state is only possible if device is marked 26922d1661a5SPawel Jakub Dawidek * NOAUTOSYNC. 26932d1661a5SPawel Jakub Dawidek */ 26942d1661a5SPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) != 0, 26952d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 26962d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 26972d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 26982d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 26992d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27002d1661a5SPawel Jakub Dawidek 27012d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 27022d1661a5SPawel Jakub Dawidek disk->d_state = state; 27032d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27042d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s is stale.", 27052d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27062d1661a5SPawel Jakub Dawidek break; 27072d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 27082d1661a5SPawel Jakub Dawidek /* 27092d1661a5SPawel Jakub Dawidek * Possible scenarios: 27102d1661a5SPawel Jakub Dawidek * 1. Disk which needs synchronization was connected. 27112d1661a5SPawel Jakub Dawidek */ 27122d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 27132d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 27142d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 27152d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27162d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27172d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 27182d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 27192d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27202d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27212d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27222d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27232d1661a5SPawel Jakub Dawidek 27242d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NEW) 27252d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 27262d1661a5SPawel Jakub Dawidek disk->d_state = state; 27272d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) { 27282d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 27292d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27302d1661a5SPawel Jakub Dawidek } 27312d1661a5SPawel Jakub Dawidek break; 27322d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_DISCONNECTED: 27332d1661a5SPawel Jakub Dawidek /* 27342d1661a5SPawel Jakub Dawidek * Possible scenarios: 27352d1661a5SPawel Jakub Dawidek * 1. Device wasn't running yet, but disk disappear. 27362d1661a5SPawel Jakub Dawidek * 2. Disk was active and disapppear. 27372d1661a5SPawel Jakub Dawidek * 3. Disk disappear during synchronization process. 27382d1661a5SPawel Jakub Dawidek */ 27392d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 27402d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 27412d1661a5SPawel Jakub Dawidek /* 27422d1661a5SPawel Jakub Dawidek * Previous state should be ACTIVE, STALE or 27432d1661a5SPawel Jakub Dawidek * SYNCHRONIZING. 27442d1661a5SPawel Jakub Dawidek */ 27452d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 27462d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_STALE || 27472d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 27482d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 27492d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27502d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27512d1661a5SPawel Jakub Dawidek } else if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) { 27522d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 27532d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 27542d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 27552d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27562d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27572d1661a5SPawel Jakub Dawidek /* 27582d1661a5SPawel Jakub Dawidek * Reset bumping syncid if disk disappeared in STARTING 27592d1661a5SPawel Jakub Dawidek * state. 27602d1661a5SPawel Jakub Dawidek */ 2761ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) 2762a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 27632d1661a5SPawel Jakub Dawidek #ifdef INVARIANTS 27642d1661a5SPawel Jakub Dawidek } else { 27652d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s, %s, %s).", 27662d1661a5SPawel Jakub Dawidek sc->sc_name, 27672d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 27682d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 27692d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 27702d1661a5SPawel Jakub Dawidek #endif 27712d1661a5SPawel Jakub Dawidek } 27722d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 27732d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s disconnected.", 27742d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 27752d1661a5SPawel Jakub Dawidek 27762d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 27772d1661a5SPawel Jakub Dawidek break; 27782d1661a5SPawel Jakub Dawidek default: 27792d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Unknown state (%u).", state)); 27802d1661a5SPawel Jakub Dawidek break; 27812d1661a5SPawel Jakub Dawidek } 27822d1661a5SPawel Jakub Dawidek return (0); 27832d1661a5SPawel Jakub Dawidek } 27842d1661a5SPawel Jakub Dawidek #undef DISK_STATE_CHANGED 27852d1661a5SPawel Jakub Dawidek 2786ea973705SPawel Jakub Dawidek int 27872d1661a5SPawel Jakub Dawidek g_raid3_read_metadata(struct g_consumer *cp, struct g_raid3_metadata *md) 27882d1661a5SPawel Jakub Dawidek { 27892d1661a5SPawel Jakub Dawidek struct g_provider *pp; 27902d1661a5SPawel Jakub Dawidek u_char *buf; 27912d1661a5SPawel Jakub Dawidek int error; 27922d1661a5SPawel Jakub Dawidek 27932d1661a5SPawel Jakub Dawidek g_topology_assert(); 27942d1661a5SPawel Jakub Dawidek 27952d1661a5SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 27962d1661a5SPawel Jakub Dawidek if (error != 0) 27972d1661a5SPawel Jakub Dawidek return (error); 27982d1661a5SPawel Jakub Dawidek pp = cp->provider; 27992d1661a5SPawel Jakub Dawidek g_topology_unlock(); 28002d1661a5SPawel Jakub Dawidek /* Metadata are stored on last sector. */ 28012d1661a5SPawel Jakub Dawidek buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize, 28022d1661a5SPawel Jakub Dawidek &error); 28032d1661a5SPawel Jakub Dawidek g_topology_lock(); 28042d1661a5SPawel Jakub Dawidek g_access(cp, -1, 0, 0); 28058a4a44b5SMaxim Sobolev if (buf == NULL) { 2806a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot read metadata from %s (error=%d).", 2807a245a548SPawel Jakub Dawidek cp->provider->name, error); 28082d1661a5SPawel Jakub Dawidek return (error); 28092d1661a5SPawel Jakub Dawidek } 28102d1661a5SPawel Jakub Dawidek 28112d1661a5SPawel Jakub Dawidek /* Decode metadata. */ 28122d1661a5SPawel Jakub Dawidek error = raid3_metadata_decode(buf, md); 28132d1661a5SPawel Jakub Dawidek g_free(buf); 28142d1661a5SPawel Jakub Dawidek if (strcmp(md->md_magic, G_RAID3_MAGIC) != 0) 28152d1661a5SPawel Jakub Dawidek return (EINVAL); 2816a245a548SPawel Jakub Dawidek if (md->md_version > G_RAID3_VERSION) { 2817a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2818a245a548SPawel Jakub Dawidek "Kernel module is too old to handle metadata from %s.", 2819a245a548SPawel Jakub Dawidek cp->provider->name); 2820a245a548SPawel Jakub Dawidek return (EINVAL); 2821a245a548SPawel Jakub Dawidek } 28222d1661a5SPawel Jakub Dawidek if (error != 0) { 28232d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "MD5 metadata hash mismatch for provider %s.", 28242d1661a5SPawel Jakub Dawidek cp->provider->name); 28252d1661a5SPawel Jakub Dawidek return (error); 28262d1661a5SPawel Jakub Dawidek } 28272d1661a5SPawel Jakub Dawidek 28282d1661a5SPawel Jakub Dawidek return (0); 28292d1661a5SPawel Jakub Dawidek } 28302d1661a5SPawel Jakub Dawidek 28312d1661a5SPawel Jakub Dawidek static int 28322d1661a5SPawel Jakub Dawidek g_raid3_check_metadata(struct g_raid3_softc *sc, struct g_provider *pp, 28332d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 28342d1661a5SPawel Jakub Dawidek { 28352d1661a5SPawel Jakub Dawidek 28362d1661a5SPawel Jakub Dawidek if (md->md_no >= sc->sc_ndisks) { 28372d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Invalid disk %s number (no=%u), skipping.", 28382d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 28392d1661a5SPawel Jakub Dawidek return (EINVAL); 28402d1661a5SPawel Jakub Dawidek } 28412d1661a5SPawel Jakub Dawidek if (sc->sc_disks[md->md_no].d_state != G_RAID3_DISK_STATE_NODISK) { 28422d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (no=%u) already exists, skipping.", 28432d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 28442d1661a5SPawel Jakub Dawidek return (EEXIST); 28452d1661a5SPawel Jakub Dawidek } 28462d1661a5SPawel Jakub Dawidek if (md->md_all != sc->sc_ndisks) { 28472d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28482d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 28492d1661a5SPawel Jakub Dawidek "md_all", pp->name, sc->sc_name); 28502d1661a5SPawel Jakub Dawidek return (EINVAL); 28512d1661a5SPawel Jakub Dawidek } 28522d1661a5SPawel Jakub Dawidek if (md->md_mediasize != sc->sc_mediasize) { 28532d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28542d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 28552d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 28562d1661a5SPawel Jakub Dawidek return (EINVAL); 28572d1661a5SPawel Jakub Dawidek } 28582d1661a5SPawel Jakub Dawidek if ((md->md_mediasize % (sc->sc_ndisks - 1)) != 0) { 28592d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28602d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 28612d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 28622d1661a5SPawel Jakub Dawidek return (EINVAL); 28632d1661a5SPawel Jakub Dawidek } 28642d1661a5SPawel Jakub Dawidek if ((sc->sc_mediasize / (sc->sc_ndisks - 1)) > pp->mediasize) { 28652d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28662d1661a5SPawel Jakub Dawidek "Invalid size of disk %s (device %s), skipping.", pp->name, 28672d1661a5SPawel Jakub Dawidek sc->sc_name); 28682d1661a5SPawel Jakub Dawidek return (EINVAL); 28692d1661a5SPawel Jakub Dawidek } 28702d1661a5SPawel Jakub Dawidek if ((md->md_sectorsize / pp->sectorsize) < sc->sc_ndisks - 1) { 28712d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28722d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 28732d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 28742d1661a5SPawel Jakub Dawidek return (EINVAL); 28752d1661a5SPawel Jakub Dawidek } 28762d1661a5SPawel Jakub Dawidek if (md->md_sectorsize != sc->sc_sectorsize) { 28772d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28782d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 28792d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 28802d1661a5SPawel Jakub Dawidek return (EINVAL); 28812d1661a5SPawel Jakub Dawidek } 28822d1661a5SPawel Jakub Dawidek if ((sc->sc_sectorsize % pp->sectorsize) != 0) { 28832d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28842d1661a5SPawel Jakub Dawidek "Invalid sector size of disk %s (device %s), skipping.", 28852d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 28862d1661a5SPawel Jakub Dawidek return (EINVAL); 28872d1661a5SPawel Jakub Dawidek } 28882d1661a5SPawel Jakub Dawidek if ((md->md_mflags & ~G_RAID3_DEVICE_FLAG_MASK) != 0) { 28892d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28902d1661a5SPawel Jakub Dawidek "Invalid device flags on disk %s (device %s), skipping.", 28912d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 28922d1661a5SPawel Jakub Dawidek return (EINVAL); 28932d1661a5SPawel Jakub Dawidek } 2894dba915cfSPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 2895dba915cfSPawel Jakub Dawidek (md->md_mflags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0) { 2896dba915cfSPawel Jakub Dawidek /* 2897dba915cfSPawel Jakub Dawidek * VERIFY and ROUND-ROBIN options are mutally exclusive. 2898dba915cfSPawel Jakub Dawidek */ 2899dba915cfSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Both VERIFY and ROUND-ROBIN flags exist on " 2900dba915cfSPawel Jakub Dawidek "disk %s (device %s), skipping.", pp->name, sc->sc_name); 2901dba915cfSPawel Jakub Dawidek return (EINVAL); 2902dba915cfSPawel Jakub Dawidek } 29032d1661a5SPawel Jakub Dawidek if ((md->md_dflags & ~G_RAID3_DISK_FLAG_MASK) != 0) { 29042d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 29052d1661a5SPawel Jakub Dawidek "Invalid disk flags on disk %s (device %s), skipping.", 29062d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 29072d1661a5SPawel Jakub Dawidek return (EINVAL); 29082d1661a5SPawel Jakub Dawidek } 29092d1661a5SPawel Jakub Dawidek return (0); 29102d1661a5SPawel Jakub Dawidek } 29112d1661a5SPawel Jakub Dawidek 2912ea973705SPawel Jakub Dawidek int 29132d1661a5SPawel Jakub Dawidek g_raid3_add_disk(struct g_raid3_softc *sc, struct g_provider *pp, 29142d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 29152d1661a5SPawel Jakub Dawidek { 29162d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 29172d1661a5SPawel Jakub Dawidek int error; 29182d1661a5SPawel Jakub Dawidek 29193650be51SPawel Jakub Dawidek g_topology_assert_not(); 29202d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Adding disk %s.", pp->name); 29212d1661a5SPawel Jakub Dawidek 29222d1661a5SPawel Jakub Dawidek error = g_raid3_check_metadata(sc, pp, md); 29232d1661a5SPawel Jakub Dawidek if (error != 0) 29242d1661a5SPawel Jakub Dawidek return (error); 2925a245a548SPawel Jakub Dawidek if (sc->sc_state != G_RAID3_DEVICE_STATE_STARTING && 2926a245a548SPawel Jakub Dawidek md->md_genid < sc->sc_genid) { 2927a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Component %s (device %s) broken, skipping.", 2928a245a548SPawel Jakub Dawidek pp->name, sc->sc_name); 2929a245a548SPawel Jakub Dawidek return (EINVAL); 2930a245a548SPawel Jakub Dawidek } 29312d1661a5SPawel Jakub Dawidek disk = g_raid3_init_disk(sc, pp, md, &error); 29322d1661a5SPawel Jakub Dawidek if (disk == NULL) 29332d1661a5SPawel Jakub Dawidek return (error); 29342d1661a5SPawel Jakub Dawidek error = g_raid3_event_send(disk, G_RAID3_DISK_STATE_NEW, 29352d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_WAIT); 2936a245a548SPawel Jakub Dawidek if (error != 0) 29372d1661a5SPawel Jakub Dawidek return (error); 2938a245a548SPawel Jakub Dawidek if (md->md_version < G_RAID3_VERSION) { 2939a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Upgrading metadata on %s (v%d->v%d).", 2940a245a548SPawel Jakub Dawidek pp->name, md->md_version, G_RAID3_VERSION); 2941a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 2942a245a548SPawel Jakub Dawidek } 2943a245a548SPawel Jakub Dawidek return (0); 29442d1661a5SPawel Jakub Dawidek } 29452d1661a5SPawel Jakub Dawidek 2946712fe9bdSPawel Jakub Dawidek static void 2947712fe9bdSPawel Jakub Dawidek g_raid3_destroy_delayed(void *arg, int flag) 2948712fe9bdSPawel Jakub Dawidek { 2949712fe9bdSPawel Jakub Dawidek struct g_raid3_softc *sc; 2950712fe9bdSPawel Jakub Dawidek int error; 2951712fe9bdSPawel Jakub Dawidek 2952712fe9bdSPawel Jakub Dawidek if (flag == EV_CANCEL) { 2953712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Destroying canceled."); 2954712fe9bdSPawel Jakub Dawidek return; 2955712fe9bdSPawel Jakub Dawidek } 2956712fe9bdSPawel Jakub Dawidek sc = arg; 2957712fe9bdSPawel Jakub Dawidek g_topology_unlock(); 2958712fe9bdSPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 2959712fe9bdSPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) == 0, 2960712fe9bdSPawel Jakub Dawidek ("DESTROY flag set on %s.", sc->sc_name)); 2961712fe9bdSPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROYING) != 0, 2962712fe9bdSPawel Jakub Dawidek ("DESTROYING flag not set on %s.", sc->sc_name)); 2963712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Destroying %s (delayed).", sc->sc_name); 2964712fe9bdSPawel Jakub Dawidek error = g_raid3_destroy(sc, G_RAID3_DESTROY_SOFT); 2965712fe9bdSPawel Jakub Dawidek if (error != 0) { 2966712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot destroy %s.", sc->sc_name); 2967712fe9bdSPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 2968712fe9bdSPawel Jakub Dawidek } 2969712fe9bdSPawel Jakub Dawidek g_topology_lock(); 2970712fe9bdSPawel Jakub Dawidek } 2971712fe9bdSPawel Jakub Dawidek 29722d1661a5SPawel Jakub Dawidek static int 29732d1661a5SPawel Jakub Dawidek g_raid3_access(struct g_provider *pp, int acr, int acw, int ace) 29742d1661a5SPawel Jakub Dawidek { 29752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 2976712fe9bdSPawel Jakub Dawidek int dcr, dcw, dce, error = 0; 29772d1661a5SPawel Jakub Dawidek 29782d1661a5SPawel Jakub Dawidek g_topology_assert(); 29792d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access request for %s: r%dw%de%d.", pp->name, acr, 29802d1661a5SPawel Jakub Dawidek acw, ace); 29812d1661a5SPawel Jakub Dawidek 29821f7fec3cSPawel Jakub Dawidek sc = pp->geom->softc; 29831f7fec3cSPawel Jakub Dawidek if (sc == NULL && acr <= 0 && acw <= 0 && ace <= 0) 29841f7fec3cSPawel Jakub Dawidek return (0); 29851f7fec3cSPawel Jakub Dawidek KASSERT(sc != NULL, ("NULL softc (provider=%s).", pp->name)); 29861f7fec3cSPawel Jakub Dawidek 29872d1661a5SPawel Jakub Dawidek dcr = pp->acr + acr; 29882d1661a5SPawel Jakub Dawidek dcw = pp->acw + acw; 29892d1661a5SPawel Jakub Dawidek dce = pp->ace + ace; 29902d1661a5SPawel Jakub Dawidek 29913650be51SPawel Jakub Dawidek g_topology_unlock(); 29923650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 2993712fe9bdSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0 || 29943650be51SPawel Jakub Dawidek g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < sc->sc_ndisks - 1) { 29953650be51SPawel Jakub Dawidek if (acr > 0 || acw > 0 || ace > 0) 29963650be51SPawel Jakub Dawidek error = ENXIO; 29973650be51SPawel Jakub Dawidek goto end; 29982d1661a5SPawel Jakub Dawidek } 29990962f942SPawel Jakub Dawidek if (dcw == 0 && !sc->sc_idle) 30003650be51SPawel Jakub Dawidek g_raid3_idle(sc, dcw); 3001712fe9bdSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROYING) != 0) { 3002712fe9bdSPawel Jakub Dawidek if (acr > 0 || acw > 0 || ace > 0) { 3003712fe9bdSPawel Jakub Dawidek error = ENXIO; 3004712fe9bdSPawel Jakub Dawidek goto end; 3005712fe9bdSPawel Jakub Dawidek } 3006712fe9bdSPawel Jakub Dawidek if (dcr == 0 && dcw == 0 && dce == 0) { 3007712fe9bdSPawel Jakub Dawidek g_post_event(g_raid3_destroy_delayed, sc, M_WAITOK, 3008712fe9bdSPawel Jakub Dawidek sc, NULL); 3009712fe9bdSPawel Jakub Dawidek } 3010712fe9bdSPawel Jakub Dawidek } 30113650be51SPawel Jakub Dawidek end: 30123650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 30133650be51SPawel Jakub Dawidek g_topology_lock(); 30143650be51SPawel Jakub Dawidek return (error); 30152d1661a5SPawel Jakub Dawidek } 30162d1661a5SPawel Jakub Dawidek 30172d1661a5SPawel Jakub Dawidek static struct g_geom * 30182d1661a5SPawel Jakub Dawidek g_raid3_create(struct g_class *mp, const struct g_raid3_metadata *md) 30192d1661a5SPawel Jakub Dawidek { 30202d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 30212d1661a5SPawel Jakub Dawidek struct g_geom *gp; 30222d1661a5SPawel Jakub Dawidek int error, timeout; 30232d1661a5SPawel Jakub Dawidek u_int n; 30242d1661a5SPawel Jakub Dawidek 30252d1661a5SPawel Jakub Dawidek g_topology_assert(); 30262d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Creating device %s (id=%u).", md->md_name, md->md_id); 30272d1661a5SPawel Jakub Dawidek 30282d1661a5SPawel Jakub Dawidek /* One disk is minimum. */ 30292d1661a5SPawel Jakub Dawidek if (md->md_all < 1) 30302d1661a5SPawel Jakub Dawidek return (NULL); 30312d1661a5SPawel Jakub Dawidek /* 30322d1661a5SPawel Jakub Dawidek * Action geom. 30332d1661a5SPawel Jakub Dawidek */ 30342d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s", md->md_name); 30352d1661a5SPawel Jakub Dawidek sc = malloc(sizeof(*sc), M_RAID3, M_WAITOK | M_ZERO); 30362d1661a5SPawel Jakub Dawidek sc->sc_disks = malloc(sizeof(struct g_raid3_disk) * md->md_all, M_RAID3, 30372d1661a5SPawel Jakub Dawidek M_WAITOK | M_ZERO); 30382d1661a5SPawel Jakub Dawidek gp->start = g_raid3_start; 30392d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 30402d1661a5SPawel Jakub Dawidek gp->access = g_raid3_access; 30412d1661a5SPawel Jakub Dawidek gp->dumpconf = g_raid3_dumpconf; 30422d1661a5SPawel Jakub Dawidek 30432d1661a5SPawel Jakub Dawidek sc->sc_id = md->md_id; 30442d1661a5SPawel Jakub Dawidek sc->sc_mediasize = md->md_mediasize; 30452d1661a5SPawel Jakub Dawidek sc->sc_sectorsize = md->md_sectorsize; 30462d1661a5SPawel Jakub Dawidek sc->sc_ndisks = md->md_all; 3047f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 30482d1661a5SPawel Jakub Dawidek sc->sc_flags = md->md_mflags; 3049a245a548SPawel Jakub Dawidek sc->sc_bump_id = 0; 30500962f942SPawel Jakub Dawidek sc->sc_idle = 1; 305101f1f41cSPawel Jakub Dawidek sc->sc_last_write = time_uptime; 30520962f942SPawel Jakub Dawidek sc->sc_writes = 0; 3053afd05d74SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 3054afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_softc = sc; 3055afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_no = n; 30562d1661a5SPawel Jakub Dawidek sc->sc_disks[n].d_state = G_RAID3_DISK_STATE_NODISK; 3057afd05d74SPawel Jakub Dawidek } 30583650be51SPawel Jakub Dawidek sx_init(&sc->sc_lock, "graid3:lock"); 30592d1661a5SPawel Jakub Dawidek bioq_init(&sc->sc_queue); 30602d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_queue_mtx, "graid3:queue", NULL, MTX_DEF); 30613650be51SPawel Jakub Dawidek bioq_init(&sc->sc_regular_delayed); 30623650be51SPawel Jakub Dawidek bioq_init(&sc->sc_inflight); 30633650be51SPawel Jakub Dawidek bioq_init(&sc->sc_sync_delayed); 30642d1661a5SPawel Jakub Dawidek TAILQ_INIT(&sc->sc_events); 30652d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_events_mtx, "graid3:events", NULL, MTX_DEF); 30662d1661a5SPawel Jakub Dawidek callout_init(&sc->sc_callout, CALLOUT_MPSAFE); 30672d1661a5SPawel Jakub Dawidek sc->sc_state = G_RAID3_DEVICE_STATE_STARTING; 30682d1661a5SPawel Jakub Dawidek gp->softc = sc; 30692d1661a5SPawel Jakub Dawidek sc->sc_geom = gp; 30702d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 30712d1661a5SPawel Jakub Dawidek /* 30722d1661a5SPawel Jakub Dawidek * Synchronization geom. 30732d1661a5SPawel Jakub Dawidek */ 30742d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s.sync", md->md_name); 30752d1661a5SPawel Jakub Dawidek gp->softc = sc; 30762d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 30772d1661a5SPawel Jakub Dawidek sc->sc_sync.ds_geom = gp; 30783650be51SPawel Jakub Dawidek 3079ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 3080ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_zone = uma_zcreate("gr3:64k", 3081ed940a82SPawel Jakub Dawidek 65536, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3082ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 30833650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_inuse = 0; 30843650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_max = g_raid3_n64k; 30853650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_requested = 30863650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_failed = 0; 3087ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_zone = uma_zcreate("gr3:16k", 3088ed940a82SPawel Jakub Dawidek 16384, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3089ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 30903650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_inuse = 0; 30913650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_max = g_raid3_n16k; 30923650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_requested = 30933650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_failed = 0; 3094ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_zone = uma_zcreate("gr3:4k", 3095ed940a82SPawel Jakub Dawidek 4096, g_raid3_uma_ctor, g_raid3_uma_dtor, NULL, NULL, 3096ed940a82SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 30973650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_inuse = 0; 30983650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_max = g_raid3_n4k; 30993650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_requested = 31003650be51SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_failed = 0; 3101ed940a82SPawel Jakub Dawidek } 31023650be51SPawel Jakub Dawidek 31032d1661a5SPawel Jakub Dawidek error = kthread_create(g_raid3_worker, sc, &sc->sc_worker, 0, 0, 31042d1661a5SPawel Jakub Dawidek "g_raid3 %s", md->md_name); 31052d1661a5SPawel Jakub Dawidek if (error != 0) { 31062d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot create kernel thread for %s.", 31072d1661a5SPawel Jakub Dawidek sc->sc_name); 3108ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 31093650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_64K].sz_zone); 31103650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_16K].sz_zone); 31113650be51SPawel Jakub Dawidek uma_zdestroy(sc->sc_zones[G_RAID3_ZONE_4K].sz_zone); 3112ed940a82SPawel Jakub Dawidek } 31132d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_sync.ds_geom); 31142d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 31152d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 31163650be51SPawel Jakub Dawidek sx_destroy(&sc->sc_lock); 31172d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_geom); 31182d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 31192d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 31202d1661a5SPawel Jakub Dawidek return (NULL); 31212d1661a5SPawel Jakub Dawidek } 31222d1661a5SPawel Jakub Dawidek 31232d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s created (id=%u).", sc->sc_name, sc->sc_id); 31242d1661a5SPawel Jakub Dawidek 31254ed854e8SPawel Jakub Dawidek sc->sc_rootmount = root_mount_hold("GRAID3"); 31264ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_hold %p", sc->sc_rootmount); 31274ed854e8SPawel Jakub Dawidek 31282d1661a5SPawel Jakub Dawidek /* 31292d1661a5SPawel Jakub Dawidek * Run timeout. 31302d1661a5SPawel Jakub Dawidek */ 31312d1661a5SPawel Jakub Dawidek timeout = atomic_load_acq_int(&g_raid3_timeout); 31322d1661a5SPawel Jakub Dawidek callout_reset(&sc->sc_callout, timeout * hz, g_raid3_go, sc); 31332d1661a5SPawel Jakub Dawidek return (sc->sc_geom); 31342d1661a5SPawel Jakub Dawidek } 31352d1661a5SPawel Jakub Dawidek 31362d1661a5SPawel Jakub Dawidek int 3137712fe9bdSPawel Jakub Dawidek g_raid3_destroy(struct g_raid3_softc *sc, int how) 31382d1661a5SPawel Jakub Dawidek { 31392d1661a5SPawel Jakub Dawidek struct g_provider *pp; 31402d1661a5SPawel Jakub Dawidek 31413650be51SPawel Jakub Dawidek g_topology_assert_not(); 31422d1661a5SPawel Jakub Dawidek if (sc == NULL) 31432d1661a5SPawel Jakub Dawidek return (ENXIO); 31443650be51SPawel Jakub Dawidek sx_assert(&sc->sc_lock, SX_XLOCKED); 31453650be51SPawel Jakub Dawidek 31462d1661a5SPawel Jakub Dawidek pp = sc->sc_provider; 31472d1661a5SPawel Jakub Dawidek if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 3148712fe9bdSPawel Jakub Dawidek switch (how) { 3149712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_SOFT: 31502d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 31512d1661a5SPawel Jakub Dawidek "Device %s is still open (r%dw%de%d).", pp->name, 31522d1661a5SPawel Jakub Dawidek pp->acr, pp->acw, pp->ace); 31532d1661a5SPawel Jakub Dawidek return (EBUSY); 3154712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_DELAYED: 3155712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, 3156712fe9bdSPawel Jakub Dawidek "Device %s will be destroyed on last close.", 3157712fe9bdSPawel Jakub Dawidek pp->name); 3158712fe9bdSPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 3159712fe9bdSPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 3160712fe9bdSPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROYING; 3161712fe9bdSPawel Jakub Dawidek return (EBUSY); 3162712fe9bdSPawel Jakub Dawidek case G_RAID3_DESTROY_HARD: 3163712fe9bdSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s is still open, so it " 3164712fe9bdSPawel Jakub Dawidek "can't be definitely removed.", pp->name); 3165712fe9bdSPawel Jakub Dawidek break; 31662d1661a5SPawel Jakub Dawidek } 31672d1661a5SPawel Jakub Dawidek } 31682d1661a5SPawel Jakub Dawidek 316918486a5eSPawel Jakub Dawidek g_topology_lock(); 317018486a5eSPawel Jakub Dawidek if (sc->sc_geom->softc == NULL) { 317118486a5eSPawel Jakub Dawidek g_topology_unlock(); 317218486a5eSPawel Jakub Dawidek return (0); 317318486a5eSPawel Jakub Dawidek } 317418486a5eSPawel Jakub Dawidek sc->sc_geom->softc = NULL; 317518486a5eSPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 317618486a5eSPawel Jakub Dawidek g_topology_unlock(); 317718486a5eSPawel Jakub Dawidek 31782d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 31792d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_WAIT; 31802d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 31813650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 31822d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 31832d1661a5SPawel Jakub Dawidek wakeup(sc); 31842d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 31852d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 31862d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, &sc->sc_worker); 31872d1661a5SPawel Jakub Dawidek while (sc->sc_worker != NULL) 31882d1661a5SPawel Jakub Dawidek tsleep(&sc->sc_worker, PRIBIO, "r3:destroy", hz / 5); 31892d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Woken up %p.", __func__, &sc->sc_worker); 31903650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 31912d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(sc); 31922d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 31932d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 31942d1661a5SPawel Jakub Dawidek return (0); 31952d1661a5SPawel Jakub Dawidek } 31962d1661a5SPawel Jakub Dawidek 31972d1661a5SPawel Jakub Dawidek static void 31982d1661a5SPawel Jakub Dawidek g_raid3_taste_orphan(struct g_consumer *cp) 31992d1661a5SPawel Jakub Dawidek { 32002d1661a5SPawel Jakub Dawidek 32012d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("%s called while tasting %s.", __func__, 32022d1661a5SPawel Jakub Dawidek cp->provider->name)); 32032d1661a5SPawel Jakub Dawidek } 32042d1661a5SPawel Jakub Dawidek 32052d1661a5SPawel Jakub Dawidek static struct g_geom * 32062d1661a5SPawel Jakub Dawidek g_raid3_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) 32072d1661a5SPawel Jakub Dawidek { 32082d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 32092d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 32102d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 32112d1661a5SPawel Jakub Dawidek struct g_geom *gp; 32122d1661a5SPawel Jakub Dawidek int error; 32132d1661a5SPawel Jakub Dawidek 32142d1661a5SPawel Jakub Dawidek g_topology_assert(); 32152d1661a5SPawel Jakub Dawidek g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name); 32162d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Tasting %s.", pp->name); 32172d1661a5SPawel Jakub Dawidek 32182d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "raid3:taste"); 32192d1661a5SPawel Jakub Dawidek /* This orphan function should be never called. */ 32202d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_taste_orphan; 32212d1661a5SPawel Jakub Dawidek cp = g_new_consumer(gp); 32222d1661a5SPawel Jakub Dawidek g_attach(cp, pp); 32232d1661a5SPawel Jakub Dawidek error = g_raid3_read_metadata(cp, &md); 32242d1661a5SPawel Jakub Dawidek g_detach(cp); 32252d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 32262d1661a5SPawel Jakub Dawidek g_destroy_geom(gp); 32272d1661a5SPawel Jakub Dawidek if (error != 0) 32282d1661a5SPawel Jakub Dawidek return (NULL); 32292d1661a5SPawel Jakub Dawidek gp = NULL; 32302d1661a5SPawel Jakub Dawidek 32312d1661a5SPawel Jakub Dawidek if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0) 32322d1661a5SPawel Jakub Dawidek return (NULL); 3233e6890985SPawel Jakub Dawidek if (md.md_provsize != 0 && md.md_provsize != pp->mediasize) 3234e6890985SPawel Jakub Dawidek return (NULL); 32352d1661a5SPawel Jakub Dawidek if (g_raid3_debug >= 2) 32362d1661a5SPawel Jakub Dawidek raid3_metadata_dump(&md); 32372d1661a5SPawel Jakub Dawidek 32382d1661a5SPawel Jakub Dawidek /* 32392d1661a5SPawel Jakub Dawidek * Let's check if device already exists. 32402d1661a5SPawel Jakub Dawidek */ 324145d5e85aSPawel Jakub Dawidek sc = NULL; 32422d1661a5SPawel Jakub Dawidek LIST_FOREACH(gp, &mp->geom, geom) { 32432d1661a5SPawel Jakub Dawidek sc = gp->softc; 32442d1661a5SPawel Jakub Dawidek if (sc == NULL) 32452d1661a5SPawel Jakub Dawidek continue; 32462d1661a5SPawel Jakub Dawidek if (sc->sc_sync.ds_geom == gp) 32472d1661a5SPawel Jakub Dawidek continue; 32482d1661a5SPawel Jakub Dawidek if (strcmp(md.md_name, sc->sc_name) != 0) 32492d1661a5SPawel Jakub Dawidek continue; 32502d1661a5SPawel Jakub Dawidek if (md.md_id != sc->sc_id) { 32512d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s already configured.", 32522d1661a5SPawel Jakub Dawidek sc->sc_name); 32532d1661a5SPawel Jakub Dawidek return (NULL); 32542d1661a5SPawel Jakub Dawidek } 32552d1661a5SPawel Jakub Dawidek break; 32562d1661a5SPawel Jakub Dawidek } 32572d1661a5SPawel Jakub Dawidek if (gp == NULL) { 32582d1661a5SPawel Jakub Dawidek gp = g_raid3_create(mp, &md); 32592d1661a5SPawel Jakub Dawidek if (gp == NULL) { 32602d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot create device %s.", 32612d1661a5SPawel Jakub Dawidek md.md_name); 32622d1661a5SPawel Jakub Dawidek return (NULL); 32632d1661a5SPawel Jakub Dawidek } 32642d1661a5SPawel Jakub Dawidek sc = gp->softc; 32652d1661a5SPawel Jakub Dawidek } 32662d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name); 32673650be51SPawel Jakub Dawidek g_topology_unlock(); 32683650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 32692d1661a5SPawel Jakub Dawidek error = g_raid3_add_disk(sc, pp, &md); 32702d1661a5SPawel Jakub Dawidek if (error != 0) { 32712d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot add disk %s to %s (error=%d).", 32722d1661a5SPawel Jakub Dawidek pp->name, gp->name, error); 32732d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NODISK) == 32742d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 3275712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 32763525bb6bSPawel Jakub Dawidek g_raid3_destroy(sc, G_RAID3_DESTROY_HARD); 32773650be51SPawel Jakub Dawidek g_topology_lock(); 32782d1661a5SPawel Jakub Dawidek return (NULL); 32792d1661a5SPawel Jakub Dawidek } 32803650be51SPawel Jakub Dawidek gp = NULL; 32813650be51SPawel Jakub Dawidek } 32823650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 32833650be51SPawel Jakub Dawidek g_topology_lock(); 32842d1661a5SPawel Jakub Dawidek return (gp); 32852d1661a5SPawel Jakub Dawidek } 32862d1661a5SPawel Jakub Dawidek 32872d1661a5SPawel Jakub Dawidek static int 32882d1661a5SPawel Jakub Dawidek g_raid3_destroy_geom(struct gctl_req *req __unused, struct g_class *mp __unused, 32892d1661a5SPawel Jakub Dawidek struct g_geom *gp) 32902d1661a5SPawel Jakub Dawidek { 32913650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 32923650be51SPawel Jakub Dawidek int error; 32932d1661a5SPawel Jakub Dawidek 32943650be51SPawel Jakub Dawidek g_topology_unlock(); 32953650be51SPawel Jakub Dawidek sc = gp->softc; 32963650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3297712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 32983525bb6bSPawel Jakub Dawidek error = g_raid3_destroy(gp->softc, G_RAID3_DESTROY_SOFT); 32993650be51SPawel Jakub Dawidek if (error != 0) 33003650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 33013650be51SPawel Jakub Dawidek g_topology_lock(); 33023650be51SPawel Jakub Dawidek return (error); 33032d1661a5SPawel Jakub Dawidek } 33042d1661a5SPawel Jakub Dawidek 33052d1661a5SPawel Jakub Dawidek static void 33062d1661a5SPawel Jakub Dawidek g_raid3_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 33072d1661a5SPawel Jakub Dawidek struct g_consumer *cp, struct g_provider *pp) 33082d1661a5SPawel Jakub Dawidek { 33092d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 33102d1661a5SPawel Jakub Dawidek 33112d1661a5SPawel Jakub Dawidek g_topology_assert(); 33122d1661a5SPawel Jakub Dawidek 33132d1661a5SPawel Jakub Dawidek sc = gp->softc; 33142d1661a5SPawel Jakub Dawidek if (sc == NULL) 33152d1661a5SPawel Jakub Dawidek return; 33162d1661a5SPawel Jakub Dawidek /* Skip synchronization geom. */ 33172d1661a5SPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 33182d1661a5SPawel Jakub Dawidek return; 33192d1661a5SPawel Jakub Dawidek if (pp != NULL) { 33202d1661a5SPawel Jakub Dawidek /* Nothing here. */ 33212d1661a5SPawel Jakub Dawidek } else if (cp != NULL) { 33222d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 33232d1661a5SPawel Jakub Dawidek 33242d1661a5SPawel Jakub Dawidek disk = cp->private; 33252d1661a5SPawel Jakub Dawidek if (disk == NULL) 33262d1661a5SPawel Jakub Dawidek return; 33273650be51SPawel Jakub Dawidek g_topology_unlock(); 33283650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 33292d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Type>", indent); 33302d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 33312d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "PARITY"); 33322d1661a5SPawel Jakub Dawidek else 33332d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "DATA"); 33342d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Type>\n"); 33352d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Number>%u</Number>\n", indent, 33362d1661a5SPawel Jakub Dawidek (u_int)disk->d_no); 33372d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 33382d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Synchronized>", indent); 33393650be51SPawel Jakub Dawidek if (disk->d_sync.ds_offset == 0) 33402d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "0%%"); 33412d1661a5SPawel Jakub Dawidek else { 33422d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%u%%", 33433650be51SPawel Jakub Dawidek (u_int)((disk->d_sync.ds_offset * 100) / 3344c0d68b6eSPawel Jakub Dawidek (sc->sc_mediasize / (sc->sc_ndisks - 1)))); 33452d1661a5SPawel Jakub Dawidek } 33462d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Synchronized>\n"); 33472d1661a5SPawel Jakub Dawidek } 33482d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, 33492d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid); 3350a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, disk->d_genid); 33512d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 33522d1661a5SPawel Jakub Dawidek if (disk->d_flags == 0) 33532d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 33542d1661a5SPawel Jakub Dawidek else { 33552d1661a5SPawel Jakub Dawidek int first = 1; 33562d1661a5SPawel Jakub Dawidek 33572d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 33582d1661a5SPawel Jakub Dawidek if ((disk->d_flags & (flag)) != 0) { \ 33592d1661a5SPawel Jakub Dawidek if (!first) \ 33602d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 33612d1661a5SPawel Jakub Dawidek else \ 33622d1661a5SPawel Jakub Dawidek first = 0; \ 33632d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 33642d1661a5SPawel Jakub Dawidek } \ 33652d1661a5SPawel Jakub Dawidek } while (0) 33662d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_DIRTY, "DIRTY"); 33672d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_HARDCODED, "HARDCODED"); 33682d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_SYNCHRONIZING, 33692d1661a5SPawel Jakub Dawidek "SYNCHRONIZING"); 33702d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_FORCE_SYNC, "FORCE_SYNC"); 33713aae74ecSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_BROKEN, "BROKEN"); 33722d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 33732d1661a5SPawel Jakub Dawidek } 33742d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 33752d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 33762d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state)); 33773650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 33783650be51SPawel Jakub Dawidek g_topology_lock(); 33792d1661a5SPawel Jakub Dawidek } else { 33803650be51SPawel Jakub Dawidek g_topology_unlock(); 33813650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3382ed940a82SPawel Jakub Dawidek if (!g_raid3_use_malloc) { 3383ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3384ed940a82SPawel Jakub Dawidek "%s<Zone4kRequested>%u</Zone4kRequested>\n", indent, 3385ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_requested); 3386ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3387ed940a82SPawel Jakub Dawidek "%s<Zone4kFailed>%u</Zone4kFailed>\n", indent, 3388ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_4K].sz_failed); 3389ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3390ed940a82SPawel Jakub Dawidek "%s<Zone16kRequested>%u</Zone16kRequested>\n", indent, 3391ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_requested); 3392ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3393ed940a82SPawel Jakub Dawidek "%s<Zone16kFailed>%u</Zone16kFailed>\n", indent, 3394ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_16K].sz_failed); 3395ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3396ed940a82SPawel Jakub Dawidek "%s<Zone64kRequested>%u</Zone64kRequested>\n", indent, 3397ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_requested); 3398ed940a82SPawel Jakub Dawidek sbuf_printf(sb, 3399ed940a82SPawel Jakub Dawidek "%s<Zone64kFailed>%u</Zone64kFailed>\n", indent, 3400ed940a82SPawel Jakub Dawidek sc->sc_zones[G_RAID3_ZONE_64K].sz_failed); 3401ed940a82SPawel Jakub Dawidek } 34022d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id); 34032d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, sc->sc_syncid); 3404a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, sc->sc_genid); 34052d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 34062d1661a5SPawel Jakub Dawidek if (sc->sc_flags == 0) 34072d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 34082d1661a5SPawel Jakub Dawidek else { 34092d1661a5SPawel Jakub Dawidek int first = 1; 34102d1661a5SPawel Jakub Dawidek 34112d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 34122d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & (flag)) != 0) { \ 34132d1661a5SPawel Jakub Dawidek if (!first) \ 34142d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 34152d1661a5SPawel Jakub Dawidek else \ 34162d1661a5SPawel Jakub Dawidek first = 0; \ 34172d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 34182d1661a5SPawel Jakub Dawidek } \ 34192d1661a5SPawel Jakub Dawidek } while (0) 34202d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_NOAUTOSYNC, "NOAUTOSYNC"); 3421f5a2f7feSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_ROUND_ROBIN, 3422f5a2f7feSPawel Jakub Dawidek "ROUND-ROBIN"); 3423dba915cfSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_VERIFY, "VERIFY"); 34242d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 34252d1661a5SPawel Jakub Dawidek } 34262d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 34272d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Components>%u</Components>\n", indent, 34282d1661a5SPawel Jakub Dawidek sc->sc_ndisks); 342928b31df7SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 343028b31df7SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state)); 34313650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 34323650be51SPawel Jakub Dawidek g_topology_lock(); 34332d1661a5SPawel Jakub Dawidek } 34342d1661a5SPawel Jakub Dawidek } 34352d1661a5SPawel Jakub Dawidek 34369da3072cSPawel Jakub Dawidek static void 34373650be51SPawel Jakub Dawidek g_raid3_shutdown_pre_sync(void *arg, int howto) 34389da3072cSPawel Jakub Dawidek { 34399da3072cSPawel Jakub Dawidek struct g_class *mp; 34409da3072cSPawel Jakub Dawidek struct g_geom *gp, *gp2; 34413650be51SPawel Jakub Dawidek struct g_raid3_softc *sc; 3442712fe9bdSPawel Jakub Dawidek int error; 34439da3072cSPawel Jakub Dawidek 34449da3072cSPawel Jakub Dawidek mp = arg; 3445fdc3c6ceSPawel Jakub Dawidek DROP_GIANT(); 34469da3072cSPawel Jakub Dawidek g_topology_lock(); 34479da3072cSPawel Jakub Dawidek LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) { 34483650be51SPawel Jakub Dawidek if ((sc = gp->softc) == NULL) 34499da3072cSPawel Jakub Dawidek continue; 3450712fe9bdSPawel Jakub Dawidek /* Skip synchronization geom. */ 3451712fe9bdSPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 3452712fe9bdSPawel Jakub Dawidek continue; 34533650be51SPawel Jakub Dawidek g_topology_unlock(); 34543650be51SPawel Jakub Dawidek sx_xlock(&sc->sc_lock); 3455712fe9bdSPawel Jakub Dawidek g_cancel_event(sc); 3456712fe9bdSPawel Jakub Dawidek error = g_raid3_destroy(sc, G_RAID3_DESTROY_DELAYED); 3457712fe9bdSPawel Jakub Dawidek if (error != 0) 34583650be51SPawel Jakub Dawidek sx_xunlock(&sc->sc_lock); 34593650be51SPawel Jakub Dawidek g_topology_lock(); 34603650be51SPawel Jakub Dawidek } 34613650be51SPawel Jakub Dawidek g_topology_unlock(); 34623650be51SPawel Jakub Dawidek PICKUP_GIANT(); 34633650be51SPawel Jakub Dawidek } 34643650be51SPawel Jakub Dawidek 34653650be51SPawel Jakub Dawidek static void 34669da3072cSPawel Jakub Dawidek g_raid3_init(struct g_class *mp) 34679da3072cSPawel Jakub Dawidek { 34689da3072cSPawel Jakub Dawidek 34693650be51SPawel Jakub Dawidek g_raid3_pre_sync = EVENTHANDLER_REGISTER(shutdown_pre_sync, 34703650be51SPawel Jakub Dawidek g_raid3_shutdown_pre_sync, mp, SHUTDOWN_PRI_FIRST); 3471712fe9bdSPawel Jakub Dawidek if (g_raid3_pre_sync == NULL) 34729da3072cSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Warning! Cannot register shutdown event."); 34739da3072cSPawel Jakub Dawidek } 34749da3072cSPawel Jakub Dawidek 34759da3072cSPawel Jakub Dawidek static void 34769da3072cSPawel Jakub Dawidek g_raid3_fini(struct g_class *mp) 34779da3072cSPawel Jakub Dawidek { 34789da3072cSPawel Jakub Dawidek 34793650be51SPawel Jakub Dawidek if (g_raid3_pre_sync != NULL) 34803650be51SPawel Jakub Dawidek EVENTHANDLER_DEREGISTER(shutdown_pre_sync, g_raid3_pre_sync); 34819da3072cSPawel Jakub Dawidek } 34829da3072cSPawel Jakub Dawidek 34832d1661a5SPawel Jakub Dawidek DECLARE_GEOM_CLASS(g_raid3_class, g_raid3); 3484