12d1661a5SPawel Jakub Dawidek /*- 20218292cSPawel Jakub Dawidek * Copyright (c) 2004-2005 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"); 652d1661a5SPawel Jakub Dawidek static u_int g_raid3_reqs_per_sync = 5; 662d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, reqs_per_sync, CTLFLAG_RW, 672d1661a5SPawel Jakub Dawidek &g_raid3_reqs_per_sync, 0, 682d1661a5SPawel Jakub Dawidek "Number of regular I/O requests per synchronization request"); 6943756685SPawel Jakub Dawidek static u_int g_raid3_syncs_per_sec = 1000; 702d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, syncs_per_sec, CTLFLAG_RW, 712d1661a5SPawel Jakub Dawidek &g_raid3_syncs_per_sec, 0, 722d1661a5SPawel Jakub Dawidek "Number of synchronizations requests per second"); 732d1661a5SPawel Jakub Dawidek 742d1661a5SPawel Jakub Dawidek static u_int g_raid3_n64k = 50; 752d1661a5SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.n64k", &g_raid3_n64k); 762d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, n64k, CTLFLAG_RD, &g_raid3_n64k, 0, 772d1661a5SPawel Jakub Dawidek "Maximum number of 64kB allocations"); 782d1661a5SPawel Jakub Dawidek static u_int g_raid3_n16k = 200; 792d1661a5SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.n16k", &g_raid3_n16k); 802d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, n16k, CTLFLAG_RD, &g_raid3_n16k, 0, 812d1661a5SPawel Jakub Dawidek "Maximum number of 16kB allocations"); 822d1661a5SPawel Jakub Dawidek static u_int g_raid3_n4k = 1200; 832d1661a5SPawel Jakub Dawidek TUNABLE_INT("kern.geom.raid3.n4k", &g_raid3_n4k); 842d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3, OID_AUTO, n4k, CTLFLAG_RD, &g_raid3_n4k, 0, 852d1661a5SPawel Jakub Dawidek "Maximum number of 4kB allocations"); 862d1661a5SPawel Jakub Dawidek 872d1661a5SPawel Jakub Dawidek SYSCTL_NODE(_kern_geom_raid3, OID_AUTO, stat, CTLFLAG_RW, 0, 882d1661a5SPawel Jakub Dawidek "GEOM_RAID3 statistics"); 89dba915cfSPawel Jakub Dawidek static u_int g_raid3_parity_mismatch = 0; 90dba915cfSPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3_stat, OID_AUTO, parity_mismatch, CTLFLAG_RD, 91dba915cfSPawel Jakub Dawidek &g_raid3_parity_mismatch, 0, "Number of failures in VERIFY mode"); 922d1661a5SPawel Jakub Dawidek static u_int g_raid3_64k_requested = 0; 932d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3_stat, OID_AUTO, 64k_requested, CTLFLAG_RD, 942d1661a5SPawel Jakub Dawidek &g_raid3_64k_requested, 0, "Number of requested 64kB allocations"); 952d1661a5SPawel Jakub Dawidek static u_int g_raid3_64k_failed = 0; 962d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3_stat, OID_AUTO, 64k_failed, CTLFLAG_RD, 972d1661a5SPawel Jakub Dawidek &g_raid3_64k_failed, 0, "Number of failed 64kB allocations"); 982d1661a5SPawel Jakub Dawidek static u_int g_raid3_16k_requested = 0; 992d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3_stat, OID_AUTO, 16k_requested, CTLFLAG_RD, 1002d1661a5SPawel Jakub Dawidek &g_raid3_16k_requested, 0, "Number of requested 16kB allocations"); 1012d1661a5SPawel Jakub Dawidek static u_int g_raid3_16k_failed = 0; 1022d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3_stat, OID_AUTO, 16k_failed, CTLFLAG_RD, 1032d1661a5SPawel Jakub Dawidek &g_raid3_16k_failed, 0, "Number of failed 16kB allocations"); 1042d1661a5SPawel Jakub Dawidek static u_int g_raid3_4k_requested = 0; 1052d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3_stat, OID_AUTO, 4k_requested, CTLFLAG_RD, 1062d1661a5SPawel Jakub Dawidek &g_raid3_4k_requested, 0, "Number of requested 4kB allocations"); 1072d1661a5SPawel Jakub Dawidek static u_int g_raid3_4k_failed = 0; 1082d1661a5SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_raid3_stat, OID_AUTO, 4k_failed, CTLFLAG_RD, 1092d1661a5SPawel Jakub Dawidek &g_raid3_4k_failed, 0, "Number of failed 4kB allocations"); 1102d1661a5SPawel Jakub Dawidek 1112d1661a5SPawel Jakub Dawidek #define MSLEEP(ident, mtx, priority, wmesg, timeout) do { \ 1122d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, (ident)); \ 1132d1661a5SPawel Jakub Dawidek msleep((ident), (mtx), (priority), (wmesg), (timeout)); \ 1142d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Woken up %p.", __func__, (ident)); \ 1152d1661a5SPawel Jakub Dawidek } while (0) 1162d1661a5SPawel Jakub Dawidek 1179da3072cSPawel Jakub Dawidek static eventhandler_tag g_raid3_ehtag = NULL; 1182d1661a5SPawel Jakub Dawidek 1192d1661a5SPawel Jakub Dawidek static int g_raid3_destroy_geom(struct gctl_req *req, struct g_class *mp, 1202d1661a5SPawel Jakub Dawidek struct g_geom *gp); 1212d1661a5SPawel Jakub Dawidek static g_taste_t g_raid3_taste; 1229da3072cSPawel Jakub Dawidek static void g_raid3_init(struct g_class *mp); 1239da3072cSPawel Jakub Dawidek static void g_raid3_fini(struct g_class *mp); 1242d1661a5SPawel Jakub Dawidek 1252d1661a5SPawel Jakub Dawidek struct g_class g_raid3_class = { 1262d1661a5SPawel Jakub Dawidek .name = G_RAID3_CLASS_NAME, 1272d1661a5SPawel Jakub Dawidek .version = G_VERSION, 1282d1661a5SPawel Jakub Dawidek .ctlreq = g_raid3_config, 1292d1661a5SPawel Jakub Dawidek .taste = g_raid3_taste, 1309da3072cSPawel Jakub Dawidek .destroy_geom = g_raid3_destroy_geom, 1319da3072cSPawel Jakub Dawidek .init = g_raid3_init, 1329da3072cSPawel Jakub Dawidek .fini = g_raid3_fini 1332d1661a5SPawel Jakub Dawidek }; 1342d1661a5SPawel Jakub Dawidek 1352d1661a5SPawel Jakub Dawidek 1362d1661a5SPawel Jakub Dawidek static void g_raid3_destroy_provider(struct g_raid3_softc *sc); 137d97d5ee9SPawel Jakub Dawidek static int g_raid3_update_disk(struct g_raid3_disk *disk, u_int state); 138d97d5ee9SPawel Jakub Dawidek static void g_raid3_update_device(struct g_raid3_softc *sc, boolean_t force); 1392d1661a5SPawel Jakub Dawidek static void g_raid3_dumpconf(struct sbuf *sb, const char *indent, 1402d1661a5SPawel Jakub Dawidek struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp); 1412d1661a5SPawel Jakub Dawidek static void g_raid3_sync_stop(struct g_raid3_softc *sc, int type); 1422d1661a5SPawel Jakub Dawidek 1432d1661a5SPawel Jakub Dawidek 1442d1661a5SPawel Jakub Dawidek static const char * 1452d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(int state) 1462d1661a5SPawel Jakub Dawidek { 1472d1661a5SPawel Jakub Dawidek 1482d1661a5SPawel Jakub Dawidek switch (state) { 1492d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NODISK: 1502d1661a5SPawel Jakub Dawidek return ("NODISK"); 1512d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NONE: 1522d1661a5SPawel Jakub Dawidek return ("NONE"); 1532d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 1542d1661a5SPawel Jakub Dawidek return ("NEW"); 1552d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 1562d1661a5SPawel Jakub Dawidek return ("ACTIVE"); 1572d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 1582d1661a5SPawel Jakub Dawidek return ("STALE"); 1592d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 1602d1661a5SPawel Jakub Dawidek return ("SYNCHRONIZING"); 1612d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_DISCONNECTED: 1622d1661a5SPawel Jakub Dawidek return ("DISCONNECTED"); 1632d1661a5SPawel Jakub Dawidek default: 1642d1661a5SPawel Jakub Dawidek return ("INVALID"); 1652d1661a5SPawel Jakub Dawidek } 1662d1661a5SPawel Jakub Dawidek } 1672d1661a5SPawel Jakub Dawidek 1682d1661a5SPawel Jakub Dawidek static const char * 1692d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(int state) 1702d1661a5SPawel Jakub Dawidek { 1712d1661a5SPawel Jakub Dawidek 1722d1661a5SPawel Jakub Dawidek switch (state) { 1732d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_STARTING: 1742d1661a5SPawel Jakub Dawidek return ("STARTING"); 1752d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_DEGRADED: 1762d1661a5SPawel Jakub Dawidek return ("DEGRADED"); 1772d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_COMPLETE: 1782d1661a5SPawel Jakub Dawidek return ("COMPLETE"); 1792d1661a5SPawel Jakub Dawidek default: 1802d1661a5SPawel Jakub Dawidek return ("INVALID"); 1812d1661a5SPawel Jakub Dawidek } 1822d1661a5SPawel Jakub Dawidek } 1832d1661a5SPawel Jakub Dawidek 1842d1661a5SPawel Jakub Dawidek const char * 1852d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(struct g_raid3_disk *disk) 1862d1661a5SPawel Jakub Dawidek { 1872d1661a5SPawel Jakub Dawidek 1882d1661a5SPawel Jakub Dawidek if (disk->d_consumer == NULL || disk->d_consumer->provider == NULL) 1892d1661a5SPawel Jakub Dawidek return ("[unknown]"); 1902d1661a5SPawel Jakub Dawidek return (disk->d_name); 1912d1661a5SPawel Jakub Dawidek } 1922d1661a5SPawel Jakub Dawidek 1932d1661a5SPawel Jakub Dawidek #define g_raid3_xor(src1, src2, dst, size) \ 1942d1661a5SPawel Jakub Dawidek _g_raid3_xor((uint64_t *)(src1), (uint64_t *)(src2), \ 1952d1661a5SPawel Jakub Dawidek (uint64_t *)(dst), (size_t)size) 1962d1661a5SPawel Jakub Dawidek static void 1972d1661a5SPawel Jakub Dawidek _g_raid3_xor(uint64_t *src1, uint64_t *src2, uint64_t *dst, size_t size) 1982d1661a5SPawel Jakub Dawidek { 1992d1661a5SPawel Jakub Dawidek 2002d1661a5SPawel Jakub Dawidek KASSERT((size % 128) == 0, ("Invalid size: %zu.", size)); 2012d1661a5SPawel Jakub Dawidek for (; size > 0; size -= 128) { 2022d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2032d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2042d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2052d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2062d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2072d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2082d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2092d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2102d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2112d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2122d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2132d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2142d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2152d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2162d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2172d1661a5SPawel Jakub Dawidek *dst++ = (*src1++) ^ (*src2++); 2182d1661a5SPawel Jakub Dawidek } 2192d1661a5SPawel Jakub Dawidek } 2202d1661a5SPawel Jakub Dawidek 221dba915cfSPawel Jakub Dawidek static int 222dba915cfSPawel Jakub Dawidek g_raid3_is_zero(struct bio *bp) 223dba915cfSPawel Jakub Dawidek { 224dba915cfSPawel Jakub Dawidek static const uint64_t zeros[] = { 225dba915cfSPawel Jakub Dawidek 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 226dba915cfSPawel Jakub Dawidek }; 227dba915cfSPawel Jakub Dawidek u_char *addr; 228dba915cfSPawel Jakub Dawidek ssize_t size; 229dba915cfSPawel Jakub Dawidek 230dba915cfSPawel Jakub Dawidek size = bp->bio_length; 231dba915cfSPawel Jakub Dawidek addr = (u_char *)bp->bio_data; 232dba915cfSPawel Jakub Dawidek for (; size > 0; size -= sizeof(zeros), addr += sizeof(zeros)) { 233dba915cfSPawel Jakub Dawidek if (bcmp(addr, zeros, sizeof(zeros)) != 0) 234dba915cfSPawel Jakub Dawidek return (0); 235dba915cfSPawel Jakub Dawidek } 236dba915cfSPawel Jakub Dawidek return (1); 237dba915cfSPawel Jakub Dawidek } 238dba915cfSPawel Jakub Dawidek 2392d1661a5SPawel Jakub Dawidek /* 2402d1661a5SPawel Jakub Dawidek * --- Events handling functions --- 2412d1661a5SPawel Jakub Dawidek * Events in geom_raid3 are used to maintain disks and device status 2422d1661a5SPawel Jakub Dawidek * from one thread to simplify locking. 2432d1661a5SPawel Jakub Dawidek */ 2442d1661a5SPawel Jakub Dawidek static void 2452d1661a5SPawel Jakub Dawidek g_raid3_event_free(struct g_raid3_event *ep) 2462d1661a5SPawel Jakub Dawidek { 2472d1661a5SPawel Jakub Dawidek 2482d1661a5SPawel Jakub Dawidek free(ep, M_RAID3); 2492d1661a5SPawel Jakub Dawidek } 2502d1661a5SPawel Jakub Dawidek 2512d1661a5SPawel Jakub Dawidek int 2522d1661a5SPawel Jakub Dawidek g_raid3_event_send(void *arg, int state, int flags) 2532d1661a5SPawel Jakub Dawidek { 2542d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 2552d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 2562d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 2572d1661a5SPawel Jakub Dawidek int error; 2582d1661a5SPawel Jakub Dawidek 2592d1661a5SPawel Jakub Dawidek ep = malloc(sizeof(*ep), M_RAID3, M_WAITOK); 2602d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sending event %p.", __func__, ep); 2612d1661a5SPawel Jakub Dawidek if ((flags & G_RAID3_EVENT_DEVICE) != 0) { 2622d1661a5SPawel Jakub Dawidek disk = NULL; 2632d1661a5SPawel Jakub Dawidek sc = arg; 2642d1661a5SPawel Jakub Dawidek } else { 2652d1661a5SPawel Jakub Dawidek disk = arg; 2662d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 2672d1661a5SPawel Jakub Dawidek } 2682d1661a5SPawel Jakub Dawidek ep->e_disk = disk; 2692d1661a5SPawel Jakub Dawidek ep->e_state = state; 2702d1661a5SPawel Jakub Dawidek ep->e_flags = flags; 2712d1661a5SPawel Jakub Dawidek ep->e_error = 0; 2722d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 2732d1661a5SPawel Jakub Dawidek TAILQ_INSERT_TAIL(&sc->sc_events, ep, e_next); 2742d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 2752d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 2762d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 2772d1661a5SPawel Jakub Dawidek wakeup(sc); 2782d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 2792d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 2802d1661a5SPawel Jakub Dawidek if ((flags & G_RAID3_EVENT_DONTWAIT) != 0) 2812d1661a5SPawel Jakub Dawidek return (0); 2822d1661a5SPawel Jakub Dawidek g_topology_assert(); 2832d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, ep); 2842d1661a5SPawel Jakub Dawidek g_topology_unlock(); 2852d1661a5SPawel Jakub Dawidek while ((ep->e_flags & G_RAID3_EVENT_DONE) == 0) { 2862d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 2872d1661a5SPawel Jakub Dawidek MSLEEP(ep, &sc->sc_events_mtx, PRIBIO | PDROP, "r3:event", 2882d1661a5SPawel Jakub Dawidek hz * 5); 2892d1661a5SPawel Jakub Dawidek } 2902d1661a5SPawel Jakub Dawidek /* Don't even try to use 'sc' here, because it could be already dead. */ 2912d1661a5SPawel Jakub Dawidek g_topology_lock(); 2922d1661a5SPawel Jakub Dawidek error = ep->e_error; 2932d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 2942d1661a5SPawel Jakub Dawidek return (error); 2952d1661a5SPawel Jakub Dawidek } 2962d1661a5SPawel Jakub Dawidek 2972d1661a5SPawel Jakub Dawidek static struct g_raid3_event * 2982d1661a5SPawel Jakub Dawidek g_raid3_event_get(struct g_raid3_softc *sc) 2992d1661a5SPawel Jakub Dawidek { 3002d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 3012d1661a5SPawel Jakub Dawidek 3022d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3032d1661a5SPawel Jakub Dawidek ep = TAILQ_FIRST(&sc->sc_events); 3042d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3052d1661a5SPawel Jakub Dawidek return (ep); 3062d1661a5SPawel Jakub Dawidek } 3072d1661a5SPawel Jakub Dawidek 3082d1661a5SPawel Jakub Dawidek static void 309d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(struct g_raid3_softc *sc, struct g_raid3_event *ep) 310d97d5ee9SPawel Jakub Dawidek { 311d97d5ee9SPawel Jakub Dawidek 312d97d5ee9SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 313d97d5ee9SPawel Jakub Dawidek TAILQ_REMOVE(&sc->sc_events, ep, e_next); 314d97d5ee9SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 315d97d5ee9SPawel Jakub Dawidek } 316d97d5ee9SPawel Jakub Dawidek 317d97d5ee9SPawel Jakub Dawidek static void 3182d1661a5SPawel Jakub Dawidek g_raid3_event_cancel(struct g_raid3_disk *disk) 3192d1661a5SPawel Jakub Dawidek { 3202d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 3212d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep, *tmpep; 3222d1661a5SPawel Jakub Dawidek 3232d1661a5SPawel Jakub Dawidek g_topology_assert(); 3242d1661a5SPawel Jakub Dawidek 3252d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 3262d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 3272d1661a5SPawel Jakub Dawidek TAILQ_FOREACH_SAFE(ep, &sc->sc_events, e_next, tmpep) { 3282d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) 3292d1661a5SPawel Jakub Dawidek continue; 3302d1661a5SPawel Jakub Dawidek if (ep->e_disk != disk) 3312d1661a5SPawel Jakub Dawidek continue; 3322d1661a5SPawel Jakub Dawidek TAILQ_REMOVE(&sc->sc_events, ep, e_next); 3332d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) 3342d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 3352d1661a5SPawel Jakub Dawidek else { 3362d1661a5SPawel Jakub Dawidek ep->e_error = ECANCELED; 3372d1661a5SPawel Jakub Dawidek wakeup(ep); 3382d1661a5SPawel Jakub Dawidek } 3392d1661a5SPawel Jakub Dawidek } 3402d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 3412d1661a5SPawel Jakub Dawidek } 3422d1661a5SPawel Jakub Dawidek 3432d1661a5SPawel Jakub Dawidek /* 3442d1661a5SPawel Jakub Dawidek * Return the number of disks in the given state. 3452d1661a5SPawel Jakub Dawidek * If state is equal to -1, count all connected disks. 3462d1661a5SPawel Jakub Dawidek */ 3472d1661a5SPawel Jakub Dawidek u_int 3482d1661a5SPawel Jakub Dawidek g_raid3_ndisks(struct g_raid3_softc *sc, int state) 3492d1661a5SPawel Jakub Dawidek { 3502d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 351fa6a7837SDavid E. O'Brien u_int n, ndisks; 3522d1661a5SPawel Jakub Dawidek 353fa6a7837SDavid E. O'Brien for (n = ndisks = 0; n < sc->sc_ndisks; n++) { 3542d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 3552d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 3562d1661a5SPawel Jakub Dawidek continue; 3572d1661a5SPawel Jakub Dawidek if (state == -1 || disk->d_state == state) 3582d1661a5SPawel Jakub Dawidek ndisks++; 3592d1661a5SPawel Jakub Dawidek } 3602d1661a5SPawel Jakub Dawidek return (ndisks); 3612d1661a5SPawel Jakub Dawidek } 3622d1661a5SPawel Jakub Dawidek 3632d1661a5SPawel Jakub Dawidek static u_int 3642d1661a5SPawel Jakub Dawidek g_raid3_nrequests(struct g_raid3_softc *sc, struct g_consumer *cp) 3652d1661a5SPawel Jakub Dawidek { 3662d1661a5SPawel Jakub Dawidek struct bio *bp; 3672d1661a5SPawel Jakub Dawidek u_int nreqs = 0; 3682d1661a5SPawel Jakub Dawidek 3692d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 3702d1661a5SPawel Jakub Dawidek TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) { 3712d1661a5SPawel Jakub Dawidek if (bp->bio_from == cp) 3722d1661a5SPawel Jakub Dawidek nreqs++; 3732d1661a5SPawel Jakub Dawidek } 3742d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 3752d1661a5SPawel Jakub Dawidek return (nreqs); 3762d1661a5SPawel Jakub Dawidek } 3772d1661a5SPawel Jakub Dawidek 3782d1661a5SPawel Jakub Dawidek static int 3792d1661a5SPawel Jakub Dawidek g_raid3_is_busy(struct g_raid3_softc *sc, struct g_consumer *cp) 3802d1661a5SPawel Jakub Dawidek { 3812d1661a5SPawel Jakub Dawidek 38279e61493SPawel Jakub Dawidek if (cp->index > 0) { 3832d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, 3842d1661a5SPawel Jakub Dawidek "I/O requests for %s exist, can't destroy it now.", 3852d1661a5SPawel Jakub Dawidek cp->provider->name); 3862d1661a5SPawel Jakub Dawidek return (1); 3872d1661a5SPawel Jakub Dawidek } 3882d1661a5SPawel Jakub Dawidek if (g_raid3_nrequests(sc, cp) > 0) { 3892d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, 3902d1661a5SPawel Jakub Dawidek "I/O requests for %s in queue, can't destroy it now.", 3912d1661a5SPawel Jakub Dawidek cp->provider->name); 3922d1661a5SPawel Jakub Dawidek return (1); 3932d1661a5SPawel Jakub Dawidek } 3942d1661a5SPawel Jakub Dawidek return (0); 3952d1661a5SPawel Jakub Dawidek } 3962d1661a5SPawel Jakub Dawidek 3972d1661a5SPawel Jakub Dawidek static void 398d97d5ee9SPawel Jakub Dawidek g_raid3_destroy_consumer(void *arg, int flags __unused) 399d97d5ee9SPawel Jakub Dawidek { 400d97d5ee9SPawel Jakub Dawidek struct g_consumer *cp; 401d97d5ee9SPawel Jakub Dawidek 402d97d5ee9SPawel Jakub Dawidek cp = arg; 403d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Consumer %s destroyed.", cp->provider->name); 404d97d5ee9SPawel Jakub Dawidek g_detach(cp); 405d97d5ee9SPawel Jakub Dawidek g_destroy_consumer(cp); 406d97d5ee9SPawel Jakub Dawidek } 407d97d5ee9SPawel Jakub Dawidek 408d97d5ee9SPawel Jakub Dawidek static void 4092d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(struct g_raid3_softc *sc, struct g_consumer *cp) 4102d1661a5SPawel Jakub Dawidek { 411d97d5ee9SPawel Jakub Dawidek struct g_provider *pp; 412d97d5ee9SPawel Jakub Dawidek int retaste_wait; 4132d1661a5SPawel Jakub Dawidek 4142d1661a5SPawel Jakub Dawidek g_topology_assert(); 4152d1661a5SPawel Jakub Dawidek 4162d1661a5SPawel Jakub Dawidek cp->private = NULL; 4172d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 4182d1661a5SPawel Jakub Dawidek return; 4192d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Consumer %s destroyed.", cp->provider->name); 420d97d5ee9SPawel Jakub Dawidek pp = cp->provider; 421d97d5ee9SPawel Jakub Dawidek retaste_wait = 0; 422d97d5ee9SPawel Jakub Dawidek if (cp->acw == 1) { 423d97d5ee9SPawel Jakub Dawidek if ((pp->geom->flags & G_GEOM_WITHER) == 0) 424d97d5ee9SPawel Jakub Dawidek retaste_wait = 1; 425d97d5ee9SPawel Jakub Dawidek } 426d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access %s r%dw%de%d = %d", pp->name, -cp->acr, 427d97d5ee9SPawel Jakub Dawidek -cp->acw, -cp->ace, 0); 428d97d5ee9SPawel Jakub Dawidek if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0) 429d97d5ee9SPawel Jakub Dawidek g_access(cp, -cp->acr, -cp->acw, -cp->ace); 430d97d5ee9SPawel Jakub Dawidek if (retaste_wait) { 431d97d5ee9SPawel Jakub Dawidek /* 432d97d5ee9SPawel Jakub Dawidek * After retaste event was send (inside g_access()), we can send 433d97d5ee9SPawel Jakub Dawidek * event to detach and destroy consumer. 434d97d5ee9SPawel Jakub Dawidek * A class, which has consumer to the given provider connected 435d97d5ee9SPawel Jakub Dawidek * will not receive retaste event for the provider. 436d97d5ee9SPawel Jakub Dawidek * This is the way how I ignore retaste events when I close 437d97d5ee9SPawel Jakub Dawidek * consumers opened for write: I detach and destroy consumer 438d97d5ee9SPawel Jakub Dawidek * after retaste event is sent. 439d97d5ee9SPawel Jakub Dawidek */ 440d97d5ee9SPawel Jakub Dawidek g_post_event(g_raid3_destroy_consumer, cp, M_WAITOK, NULL); 441d97d5ee9SPawel Jakub Dawidek return; 442d97d5ee9SPawel Jakub Dawidek } 443d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Consumer %s destroyed.", pp->name); 4442d1661a5SPawel Jakub Dawidek g_detach(cp); 4452d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 4462d1661a5SPawel Jakub Dawidek } 4472d1661a5SPawel Jakub Dawidek 4482d1661a5SPawel Jakub Dawidek static int 4492d1661a5SPawel Jakub Dawidek g_raid3_connect_disk(struct g_raid3_disk *disk, struct g_provider *pp) 4502d1661a5SPawel Jakub Dawidek { 45134cb1517SPawel Jakub Dawidek struct g_consumer *cp; 4522d1661a5SPawel Jakub Dawidek int error; 4532d1661a5SPawel Jakub Dawidek 4542d1661a5SPawel Jakub Dawidek g_topology_assert(); 4552d1661a5SPawel Jakub Dawidek KASSERT(disk->d_consumer == NULL, 4562d1661a5SPawel Jakub Dawidek ("Disk already connected (device %s).", disk->d_softc->sc_name)); 4572d1661a5SPawel Jakub Dawidek 45834cb1517SPawel Jakub Dawidek cp = g_new_consumer(disk->d_softc->sc_geom); 45934cb1517SPawel Jakub Dawidek error = g_attach(cp, pp); 460d97d5ee9SPawel Jakub Dawidek if (error != 0) { 46134cb1517SPawel Jakub Dawidek g_destroy_consumer(cp); 46234cb1517SPawel Jakub Dawidek return (error); 46334cb1517SPawel Jakub Dawidek } 46434cb1517SPawel Jakub Dawidek error = g_access(cp, 1, 1, 1); 46534cb1517SPawel Jakub Dawidek if (error != 0) { 46634cb1517SPawel Jakub Dawidek g_detach(cp); 46734cb1517SPawel Jakub Dawidek g_destroy_consumer(cp); 468d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot open consumer %s (error=%d).", 469d97d5ee9SPawel Jakub Dawidek pp->name, error); 470d97d5ee9SPawel Jakub Dawidek return (error); 471d97d5ee9SPawel Jakub Dawidek } 47234cb1517SPawel Jakub Dawidek disk->d_consumer = cp; 47334cb1517SPawel Jakub Dawidek disk->d_consumer->private = disk; 47434cb1517SPawel Jakub Dawidek disk->d_consumer->index = 0; 4752d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Disk %s connected.", g_raid3_get_diskname(disk)); 4762d1661a5SPawel Jakub Dawidek return (0); 4772d1661a5SPawel Jakub Dawidek } 4782d1661a5SPawel Jakub Dawidek 4792d1661a5SPawel Jakub Dawidek static void 4802d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(struct g_raid3_softc *sc, struct g_consumer *cp) 4812d1661a5SPawel Jakub Dawidek { 4822d1661a5SPawel Jakub Dawidek 4832d1661a5SPawel Jakub Dawidek g_topology_assert(); 4842d1661a5SPawel Jakub Dawidek 4852d1661a5SPawel Jakub Dawidek if (cp == NULL) 4862d1661a5SPawel Jakub Dawidek return; 487d97d5ee9SPawel Jakub Dawidek if (cp->provider != NULL) 4882d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cp); 489d97d5ee9SPawel Jakub Dawidek else 4902d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 4912d1661a5SPawel Jakub Dawidek } 4922d1661a5SPawel Jakub Dawidek 4932d1661a5SPawel Jakub Dawidek /* 4942d1661a5SPawel Jakub Dawidek * Initialize disk. This means allocate memory, create consumer, attach it 4952d1661a5SPawel Jakub Dawidek * to the provider and open access (r1w1e1) to it. 4962d1661a5SPawel Jakub Dawidek */ 4972d1661a5SPawel Jakub Dawidek static struct g_raid3_disk * 4982d1661a5SPawel Jakub Dawidek g_raid3_init_disk(struct g_raid3_softc *sc, struct g_provider *pp, 4992d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md, int *errorp) 5002d1661a5SPawel Jakub Dawidek { 5012d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 5022d1661a5SPawel Jakub Dawidek int error; 5032d1661a5SPawel Jakub Dawidek 5042d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[md->md_no]; 5052d1661a5SPawel Jakub Dawidek error = g_raid3_connect_disk(disk, pp); 50634cb1517SPawel Jakub Dawidek if (error != 0) { 50734cb1517SPawel Jakub Dawidek if (errorp != NULL) 50834cb1517SPawel Jakub Dawidek *errorp = error; 50934cb1517SPawel Jakub Dawidek return (NULL); 51034cb1517SPawel Jakub Dawidek } 5112d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NONE; 5122d1661a5SPawel Jakub Dawidek disk->d_flags = md->md_dflags; 5132d1661a5SPawel Jakub Dawidek if (md->md_provider[0] != '\0') 5142d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_HARDCODED; 5152d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 5162d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = md->md_sync_offset; 5172d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = md->md_sync_offset; 518d2fb9c62SPawel Jakub Dawidek disk->d_sync.ds_resync = -1; 519a245a548SPawel Jakub Dawidek disk->d_genid = md->md_genid; 5202d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = md->md_syncid; 5212d1661a5SPawel Jakub Dawidek if (errorp != NULL) 5222d1661a5SPawel Jakub Dawidek *errorp = 0; 5232d1661a5SPawel Jakub Dawidek return (disk); 5242d1661a5SPawel Jakub Dawidek } 5252d1661a5SPawel Jakub Dawidek 5262d1661a5SPawel Jakub Dawidek static void 5272d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(struct g_raid3_disk *disk) 5282d1661a5SPawel Jakub Dawidek { 5292d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 5302d1661a5SPawel Jakub Dawidek 5312d1661a5SPawel Jakub Dawidek g_topology_assert(); 5322d1661a5SPawel Jakub Dawidek 5332d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 5342d1661a5SPawel Jakub Dawidek return; 5352d1661a5SPawel Jakub Dawidek g_raid3_event_cancel(disk); 5362d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 5372d1661a5SPawel Jakub Dawidek switch (disk->d_state) { 5382d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 5392d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 5402d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 5412d1661a5SPawel Jakub Dawidek /* FALLTHROUGH */ 5422d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 5432d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 5442d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 5452d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, disk->d_consumer); 5462d1661a5SPawel Jakub Dawidek disk->d_consumer = NULL; 5472d1661a5SPawel Jakub Dawidek break; 5482d1661a5SPawel Jakub Dawidek default: 5492d1661a5SPawel Jakub Dawidek KASSERT(0 == 1, ("Wrong disk state (%s, %s).", 5502d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 5512d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 5522d1661a5SPawel Jakub Dawidek } 5532d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NODISK; 5542d1661a5SPawel Jakub Dawidek } 5552d1661a5SPawel Jakub Dawidek 5562d1661a5SPawel Jakub Dawidek static void 5572d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(struct g_raid3_softc *sc) 5582d1661a5SPawel Jakub Dawidek { 5592d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 5609da3072cSPawel Jakub Dawidek struct g_raid3_disk *disk; 5612d1661a5SPawel Jakub Dawidek struct g_geom *gp; 5622d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 5632d1661a5SPawel Jakub Dawidek u_int n; 5642d1661a5SPawel Jakub Dawidek 5652d1661a5SPawel Jakub Dawidek g_topology_assert(); 5662d1661a5SPawel Jakub Dawidek 5672d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 5682d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 5692d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 5709da3072cSPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 5719da3072cSPawel Jakub Dawidek disk = &sc->sc_disks[n]; 572d97d5ee9SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_NODISK) { 5739da3072cSPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 5749da3072cSPawel Jakub Dawidek g_raid3_update_metadata(disk); 5759da3072cSPawel Jakub Dawidek g_raid3_destroy_disk(disk); 5769da3072cSPawel Jakub Dawidek } 577d97d5ee9SPawel Jakub Dawidek } 5782d1661a5SPawel Jakub Dawidek while ((ep = g_raid3_event_get(sc)) != NULL) { 579d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 5802d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) 5812d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 5822d1661a5SPawel Jakub Dawidek else { 5832d1661a5SPawel Jakub Dawidek ep->e_error = ECANCELED; 5842d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 5852d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, ep); 5862d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 5872d1661a5SPawel Jakub Dawidek wakeup(ep); 5882d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 5892d1661a5SPawel Jakub Dawidek } 5902d1661a5SPawel Jakub Dawidek } 5912d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 5922d1661a5SPawel Jakub Dawidek gp->softc = NULL; 5932d1661a5SPawel Jakub Dawidek cp = LIST_FIRST(&sc->sc_sync.ds_geom->consumer); 5942d1661a5SPawel Jakub Dawidek if (cp != NULL) 5952d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, cp); 5962d1661a5SPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 5972d1661a5SPawel Jakub Dawidek g_wither_geom(sc->sc_sync.ds_geom, ENXIO); 5982d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_64k); 5992d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_16k); 6002d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_4k); 6012d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 6022d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 6032d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s destroyed.", gp->name); 6042d1661a5SPawel Jakub Dawidek g_wither_geom(gp, ENXIO); 6052d1661a5SPawel Jakub Dawidek } 6062d1661a5SPawel Jakub Dawidek 6072d1661a5SPawel Jakub Dawidek static void 6082d1661a5SPawel Jakub Dawidek g_raid3_orphan(struct g_consumer *cp) 6092d1661a5SPawel Jakub Dawidek { 6102d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 6112d1661a5SPawel Jakub Dawidek 6122d1661a5SPawel Jakub Dawidek g_topology_assert(); 6132d1661a5SPawel Jakub Dawidek 6142d1661a5SPawel Jakub Dawidek disk = cp->private; 6152d1661a5SPawel Jakub Dawidek if (disk == NULL) 6162d1661a5SPawel Jakub Dawidek return; 617ea973705SPawel Jakub Dawidek disk->d_softc->sc_bump_id = G_RAID3_BUMP_SYNCID; 6182d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_DISCONNECTED, 6192d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 6202d1661a5SPawel Jakub Dawidek } 6212d1661a5SPawel Jakub Dawidek 6222d1661a5SPawel Jakub Dawidek static int 6232d1661a5SPawel Jakub Dawidek g_raid3_write_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 6242d1661a5SPawel Jakub Dawidek { 6252d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 6262d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 6272d1661a5SPawel Jakub Dawidek off_t offset, length; 6282d1661a5SPawel Jakub Dawidek u_char *sector; 629d97d5ee9SPawel Jakub Dawidek int error = 0; 6302d1661a5SPawel Jakub Dawidek 6312d1661a5SPawel Jakub Dawidek g_topology_assert(); 6322d1661a5SPawel Jakub Dawidek 6332d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 6342d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 6352d1661a5SPawel Jakub Dawidek KASSERT(cp != NULL, ("NULL consumer (%s).", sc->sc_name)); 6362d1661a5SPawel Jakub Dawidek KASSERT(cp->provider != NULL, ("NULL provider (%s).", sc->sc_name)); 637d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 638d97d5ee9SPawel Jakub Dawidek ("Consumer %s closed? (r%dw%de%d).", cp->provider->name, cp->acr, 639d97d5ee9SPawel Jakub Dawidek cp->acw, cp->ace)); 6402d1661a5SPawel Jakub Dawidek length = cp->provider->sectorsize; 6412d1661a5SPawel Jakub Dawidek offset = cp->provider->mediasize - length; 6422d1661a5SPawel Jakub Dawidek sector = malloc((size_t)length, M_RAID3, M_WAITOK | M_ZERO); 6432d1661a5SPawel Jakub Dawidek if (md != NULL) 6442d1661a5SPawel Jakub Dawidek raid3_metadata_encode(md, sector); 6452d1661a5SPawel Jakub Dawidek g_topology_unlock(); 6462d1661a5SPawel Jakub Dawidek error = g_write_data(cp, offset, sector, length); 6472d1661a5SPawel Jakub Dawidek g_topology_lock(); 6482d1661a5SPawel Jakub Dawidek free(sector, M_RAID3); 6492d1661a5SPawel Jakub Dawidek if (error != 0) { 650ea973705SPawel Jakub Dawidek disk->d_softc->sc_bump_id = G_RAID3_BUMP_GENID; 6512d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_DISCONNECTED, 6522d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 6532d1661a5SPawel Jakub Dawidek } 6542d1661a5SPawel Jakub Dawidek return (error); 6552d1661a5SPawel Jakub Dawidek } 6562d1661a5SPawel Jakub Dawidek 6572d1661a5SPawel Jakub Dawidek int 6582d1661a5SPawel Jakub Dawidek g_raid3_clear_metadata(struct g_raid3_disk *disk) 6592d1661a5SPawel Jakub Dawidek { 6602d1661a5SPawel Jakub Dawidek int error; 6612d1661a5SPawel Jakub Dawidek 6622d1661a5SPawel Jakub Dawidek g_topology_assert(); 6632d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, NULL); 6642d1661a5SPawel Jakub Dawidek if (error == 0) { 6652d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s cleared.", 6662d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 6672d1661a5SPawel Jakub Dawidek } else { 6682d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 6692d1661a5SPawel Jakub Dawidek "Cannot clear metadata on disk %s (error=%d).", 6702d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 6712d1661a5SPawel Jakub Dawidek } 6722d1661a5SPawel Jakub Dawidek return (error); 6732d1661a5SPawel Jakub Dawidek } 6742d1661a5SPawel Jakub Dawidek 6752d1661a5SPawel Jakub Dawidek void 6762d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 6772d1661a5SPawel Jakub Dawidek { 6782d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 679e6890985SPawel Jakub Dawidek struct g_provider *pp; 6802d1661a5SPawel Jakub Dawidek 6812d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 6822d1661a5SPawel Jakub Dawidek strlcpy(md->md_magic, G_RAID3_MAGIC, sizeof(md->md_magic)); 6832d1661a5SPawel Jakub Dawidek md->md_version = G_RAID3_VERSION; 6842d1661a5SPawel Jakub Dawidek strlcpy(md->md_name, sc->sc_name, sizeof(md->md_name)); 6852d1661a5SPawel Jakub Dawidek md->md_id = sc->sc_id; 6862d1661a5SPawel Jakub Dawidek md->md_all = sc->sc_ndisks; 687a245a548SPawel Jakub Dawidek md->md_genid = sc->sc_genid; 6882d1661a5SPawel Jakub Dawidek md->md_mediasize = sc->sc_mediasize; 6892d1661a5SPawel Jakub Dawidek md->md_sectorsize = sc->sc_sectorsize; 6902d1661a5SPawel Jakub Dawidek md->md_mflags = (sc->sc_flags & G_RAID3_DEVICE_FLAG_MASK); 6912d1661a5SPawel Jakub Dawidek md->md_no = disk->d_no; 6922d1661a5SPawel Jakub Dawidek md->md_syncid = disk->d_sync.ds_syncid; 6932d1661a5SPawel Jakub Dawidek md->md_dflags = (disk->d_flags & G_RAID3_DISK_FLAG_MASK); 6942d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) 6952d1661a5SPawel Jakub Dawidek md->md_sync_offset = disk->d_sync.ds_offset_done; 6962d1661a5SPawel Jakub Dawidek else 6972d1661a5SPawel Jakub Dawidek md->md_sync_offset = 0; 698e6890985SPawel Jakub Dawidek if (disk->d_consumer != NULL && disk->d_consumer->provider != NULL) 699e6890985SPawel Jakub Dawidek pp = disk->d_consumer->provider; 700e6890985SPawel Jakub Dawidek else 701e6890985SPawel Jakub Dawidek pp = NULL; 702e6890985SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_HARDCODED) != 0 && pp != NULL) 703e6890985SPawel Jakub Dawidek strlcpy(md->md_provider, pp->name, sizeof(md->md_provider)); 704e6890985SPawel Jakub Dawidek else 7052d1661a5SPawel Jakub Dawidek bzero(md->md_provider, sizeof(md->md_provider)); 706e6890985SPawel Jakub Dawidek if (pp != NULL) 707e6890985SPawel Jakub Dawidek md->md_provsize = pp->mediasize; 708e6890985SPawel Jakub Dawidek else 709e6890985SPawel Jakub Dawidek md->md_provsize = 0; 7102d1661a5SPawel Jakub Dawidek } 7112d1661a5SPawel Jakub Dawidek 7122d1661a5SPawel Jakub Dawidek void 7132d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(struct g_raid3_disk *disk) 7142d1661a5SPawel Jakub Dawidek { 7152d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 7162d1661a5SPawel Jakub Dawidek int error; 7172d1661a5SPawel Jakub Dawidek 7182d1661a5SPawel Jakub Dawidek g_topology_assert(); 7192d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(disk, &md); 7202d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, &md); 7212d1661a5SPawel Jakub Dawidek if (error == 0) { 7222d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s updated.", 7232d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 7242d1661a5SPawel Jakub Dawidek } else { 7252d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 7262d1661a5SPawel Jakub Dawidek "Cannot update metadata on disk %s (error=%d).", 7272d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 7282d1661a5SPawel Jakub Dawidek } 7292d1661a5SPawel Jakub Dawidek } 7302d1661a5SPawel Jakub Dawidek 7312d1661a5SPawel Jakub Dawidek static void 732d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(struct g_raid3_softc *sc) 7332d1661a5SPawel Jakub Dawidek { 7342d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 7352d1661a5SPawel Jakub Dawidek u_int n; 7362d1661a5SPawel Jakub Dawidek 7372d1661a5SPawel Jakub Dawidek g_topology_assert(); 7382d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 7392d1661a5SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 7402d1661a5SPawel Jakub Dawidek sc->sc_name)); 7412d1661a5SPawel Jakub Dawidek 7422d1661a5SPawel Jakub Dawidek sc->sc_syncid++; 743a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: syncid bumped to %u.", sc->sc_name, 744a245a548SPawel Jakub Dawidek sc->sc_syncid); 7452d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 7462d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 7472d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 7482d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 7492d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 7502d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 7512d1661a5SPawel Jakub Dawidek } 7522d1661a5SPawel Jakub Dawidek } 7532d1661a5SPawel Jakub Dawidek } 7542d1661a5SPawel Jakub Dawidek 7554d006a98SPawel Jakub Dawidek static void 756a245a548SPawel Jakub Dawidek g_raid3_bump_genid(struct g_raid3_softc *sc) 757a245a548SPawel Jakub Dawidek { 758a245a548SPawel Jakub Dawidek struct g_raid3_disk *disk; 759a245a548SPawel Jakub Dawidek u_int n; 760a245a548SPawel Jakub Dawidek 761a245a548SPawel Jakub Dawidek g_topology_assert(); 762a245a548SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 763a245a548SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 764a245a548SPawel Jakub Dawidek sc->sc_name)); 765a245a548SPawel Jakub Dawidek 766a245a548SPawel Jakub Dawidek sc->sc_genid++; 767a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: genid bumped to %u.", sc->sc_name, 768a245a548SPawel Jakub Dawidek sc->sc_genid); 769a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 770a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 771a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 772a245a548SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 773a245a548SPawel Jakub Dawidek disk->d_genid = sc->sc_genid; 774a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 775a245a548SPawel Jakub Dawidek } 776a245a548SPawel Jakub Dawidek } 777a245a548SPawel Jakub Dawidek } 778a245a548SPawel Jakub Dawidek 779a245a548SPawel Jakub Dawidek static void 7804d006a98SPawel Jakub Dawidek g_raid3_idle(struct g_raid3_softc *sc) 7814d006a98SPawel Jakub Dawidek { 7824d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 7834d006a98SPawel Jakub Dawidek u_int i; 7844d006a98SPawel Jakub Dawidek 7854d006a98SPawel Jakub Dawidek if (sc->sc_provider == NULL || sc->sc_provider->acw == 0) 7864d006a98SPawel Jakub Dawidek return; 7874d006a98SPawel Jakub Dawidek sc->sc_idle = 1; 7884d006a98SPawel Jakub Dawidek g_topology_lock(); 7894d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 7904d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 7914d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 7924d006a98SPawel Jakub Dawidek continue; 7934d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 7944d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 7954d006a98SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 7964d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 7974d006a98SPawel Jakub Dawidek } 7984d006a98SPawel Jakub Dawidek g_topology_unlock(); 7994d006a98SPawel Jakub Dawidek } 8004d006a98SPawel Jakub Dawidek 8014d006a98SPawel Jakub Dawidek static void 8024d006a98SPawel Jakub Dawidek g_raid3_unidle(struct g_raid3_softc *sc) 8034d006a98SPawel Jakub Dawidek { 8044d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 8054d006a98SPawel Jakub Dawidek u_int i; 8064d006a98SPawel Jakub Dawidek 8074d006a98SPawel Jakub Dawidek sc->sc_idle = 0; 8084d006a98SPawel Jakub Dawidek g_topology_lock(); 8094d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 8104d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 8114d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 8124d006a98SPawel Jakub Dawidek continue; 8134d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 8144d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 8154d006a98SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 8164d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 8174d006a98SPawel Jakub Dawidek } 8184d006a98SPawel Jakub Dawidek g_topology_unlock(); 8194d006a98SPawel Jakub Dawidek } 8204d006a98SPawel Jakub Dawidek 8212d1661a5SPawel Jakub Dawidek /* 8229bb09163SPawel Jakub Dawidek * Return 1 if we should check if RAID3 device is idling. 8239bb09163SPawel Jakub Dawidek */ 8249bb09163SPawel Jakub Dawidek static int 8259bb09163SPawel Jakub Dawidek g_raid3_check_idle(struct g_raid3_softc *sc) 8269bb09163SPawel Jakub Dawidek { 8279bb09163SPawel Jakub Dawidek struct g_raid3_disk *disk; 8289bb09163SPawel Jakub Dawidek u_int i; 8299bb09163SPawel Jakub Dawidek 8309bb09163SPawel Jakub Dawidek if (sc->sc_idle) 8319bb09163SPawel Jakub Dawidek return (0); 8329bb09163SPawel Jakub Dawidek if (sc->sc_provider != NULL && sc->sc_provider->acw == 0) 8339bb09163SPawel Jakub Dawidek return (0); 8349bb09163SPawel Jakub Dawidek /* 8359bb09163SPawel Jakub Dawidek * Check if there are no in-flight requests. 8369bb09163SPawel Jakub Dawidek */ 8379bb09163SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 8389bb09163SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 8399bb09163SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 8409bb09163SPawel Jakub Dawidek continue; 8419bb09163SPawel Jakub Dawidek if (disk->d_consumer->index > 0) 8429bb09163SPawel Jakub Dawidek return (0); 8439bb09163SPawel Jakub Dawidek } 8449bb09163SPawel Jakub Dawidek return (1); 8459bb09163SPawel Jakub Dawidek } 8469bb09163SPawel Jakub Dawidek 8479bb09163SPawel Jakub Dawidek /* 8482d1661a5SPawel Jakub Dawidek * Treat bio_driver1 field in parent bio as list head and field bio_caller1 8492d1661a5SPawel Jakub Dawidek * in child bio as pointer to the next element on the list. 8502d1661a5SPawel Jakub Dawidek */ 8512d1661a5SPawel Jakub Dawidek #define G_RAID3_HEAD_BIO(pbp) (pbp)->bio_driver1 8522d1661a5SPawel Jakub Dawidek 8532d1661a5SPawel Jakub Dawidek #define G_RAID3_NEXT_BIO(cbp) (cbp)->bio_caller1 8542d1661a5SPawel Jakub Dawidek 8552d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_BIO(pbp, bp) \ 8562d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); (bp) != NULL; \ 8572d1661a5SPawel Jakub Dawidek (bp) = G_RAID3_NEXT_BIO(bp)) 8582d1661a5SPawel Jakub Dawidek 8592d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_SAFE_BIO(pbp, bp, tmpbp) \ 8602d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); \ 8612d1661a5SPawel Jakub Dawidek (bp) != NULL && ((tmpbp) = G_RAID3_NEXT_BIO(bp), 1); \ 8622d1661a5SPawel Jakub Dawidek (bp) = (tmpbp)) 8632d1661a5SPawel Jakub Dawidek 8642d1661a5SPawel Jakub Dawidek static void 8652d1661a5SPawel Jakub Dawidek g_raid3_init_bio(struct bio *pbp) 8662d1661a5SPawel Jakub Dawidek { 8672d1661a5SPawel Jakub Dawidek 8682d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = NULL; 8692d1661a5SPawel Jakub Dawidek } 8702d1661a5SPawel Jakub Dawidek 8712d1661a5SPawel Jakub Dawidek static void 872dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(struct bio *cbp) 873dba915cfSPawel Jakub Dawidek { 874dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 875dba915cfSPawel Jakub Dawidek 876dba915cfSPawel Jakub Dawidek pbp = cbp->bio_parent; 877dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) 878dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 879dba915cfSPawel Jakub Dawidek else { 880dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 881dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) { 882dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 883dba915cfSPawel Jakub Dawidek break; 884dba915cfSPawel Jakub Dawidek } 885dba915cfSPawel Jakub Dawidek } 886dba915cfSPawel Jakub Dawidek } 887dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 888dba915cfSPawel Jakub Dawidek } 889dba915cfSPawel Jakub Dawidek 890dba915cfSPawel Jakub Dawidek static void 891dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(struct bio *sbp, struct bio *dbp) 892dba915cfSPawel Jakub Dawidek { 893dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 894dba915cfSPawel Jakub Dawidek 895dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(sbp); 896dba915cfSPawel Jakub Dawidek pbp = dbp->bio_parent; 897dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(sbp) = G_RAID3_NEXT_BIO(dbp); 898dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == dbp) 899dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = sbp; 900dba915cfSPawel Jakub Dawidek else { 901dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 902dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == dbp) { 903dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = sbp; 904dba915cfSPawel Jakub Dawidek break; 905dba915cfSPawel Jakub Dawidek } 906dba915cfSPawel Jakub Dawidek } 907dba915cfSPawel Jakub Dawidek } 908dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(dbp) = NULL; 909dba915cfSPawel Jakub Dawidek } 910dba915cfSPawel Jakub Dawidek 911dba915cfSPawel Jakub Dawidek static void 9122d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(struct g_raid3_softc *sc, struct bio *cbp) 9132d1661a5SPawel Jakub Dawidek { 9142d1661a5SPawel Jakub Dawidek struct bio *bp, *pbp; 9152d1661a5SPawel Jakub Dawidek size_t size; 9162d1661a5SPawel Jakub Dawidek 9172d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 9182d1661a5SPawel Jakub Dawidek pbp->bio_children--; 9192d1661a5SPawel Jakub Dawidek KASSERT(cbp->bio_data != NULL, ("NULL bio_data")); 9202d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 9212d1661a5SPawel Jakub Dawidek if (size > 16384) 9222d1661a5SPawel Jakub Dawidek uma_zfree(sc->sc_zone_64k, cbp->bio_data); 9232d1661a5SPawel Jakub Dawidek else if (size > 4096) 9242d1661a5SPawel Jakub Dawidek uma_zfree(sc->sc_zone_16k, cbp->bio_data); 9252d1661a5SPawel Jakub Dawidek else 9262d1661a5SPawel Jakub Dawidek uma_zfree(sc->sc_zone_4k, cbp->bio_data); 9272d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) { 9282d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 9292d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 9302d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9312d1661a5SPawel Jakub Dawidek } else { 9322d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 9332d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) 9342d1661a5SPawel Jakub Dawidek break; 9352d1661a5SPawel Jakub Dawidek } 936dba915cfSPawel Jakub Dawidek if (bp != NULL) { 937dba915cfSPawel Jakub Dawidek KASSERT(G_RAID3_NEXT_BIO(bp) != NULL, 938dba915cfSPawel Jakub Dawidek ("NULL bp->bio_driver1")); 9392d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 9402d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 941dba915cfSPawel Jakub Dawidek } 9422d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9432d1661a5SPawel Jakub Dawidek } 9442d1661a5SPawel Jakub Dawidek } 9452d1661a5SPawel Jakub Dawidek 9462d1661a5SPawel Jakub Dawidek static struct bio * 9472d1661a5SPawel Jakub Dawidek g_raid3_clone_bio(struct g_raid3_softc *sc, struct bio *pbp) 9482d1661a5SPawel Jakub Dawidek { 9492d1661a5SPawel Jakub Dawidek struct bio *bp, *cbp; 9502d1661a5SPawel Jakub Dawidek size_t size; 9512d1661a5SPawel Jakub Dawidek 9522d1661a5SPawel Jakub Dawidek cbp = g_clone_bio(pbp); 9532d1661a5SPawel Jakub Dawidek if (cbp == NULL) 9542d1661a5SPawel Jakub Dawidek return (NULL); 9552d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 9562d1661a5SPawel Jakub Dawidek if (size > 16384) { 9572d1661a5SPawel Jakub Dawidek cbp->bio_data = uma_zalloc(sc->sc_zone_64k, M_NOWAIT); 9582d1661a5SPawel Jakub Dawidek g_raid3_64k_requested++; 9592d1661a5SPawel Jakub Dawidek } else if (size > 4096) { 9602d1661a5SPawel Jakub Dawidek cbp->bio_data = uma_zalloc(sc->sc_zone_16k, M_NOWAIT); 9612d1661a5SPawel Jakub Dawidek g_raid3_16k_requested++; 9622d1661a5SPawel Jakub Dawidek } else { 9632d1661a5SPawel Jakub Dawidek cbp->bio_data = uma_zalloc(sc->sc_zone_4k, M_NOWAIT); 9642d1661a5SPawel Jakub Dawidek g_raid3_4k_requested++; 9652d1661a5SPawel Jakub Dawidek } 9662d1661a5SPawel Jakub Dawidek if (cbp->bio_data == NULL) { 9672d1661a5SPawel Jakub Dawidek if (size > 16384) 9682d1661a5SPawel Jakub Dawidek g_raid3_64k_failed++; 969a65a0da2SPawel Jakub Dawidek else if (size > 4096) 9702d1661a5SPawel Jakub Dawidek g_raid3_16k_failed++; 9712d1661a5SPawel Jakub Dawidek else 9722d1661a5SPawel Jakub Dawidek g_raid3_4k_failed++; 9732d1661a5SPawel Jakub Dawidek pbp->bio_children--; 9742d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9752d1661a5SPawel Jakub Dawidek return (NULL); 9762d1661a5SPawel Jakub Dawidek } 9772d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 9782d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == NULL) 9792d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = cbp; 9802d1661a5SPawel Jakub Dawidek else { 9812d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 9822d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == NULL) { 9832d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = cbp; 9842d1661a5SPawel Jakub Dawidek break; 9852d1661a5SPawel Jakub Dawidek } 9862d1661a5SPawel Jakub Dawidek } 9872d1661a5SPawel Jakub Dawidek } 9882d1661a5SPawel Jakub Dawidek return (cbp); 9892d1661a5SPawel Jakub Dawidek } 9902d1661a5SPawel Jakub Dawidek 9912d1661a5SPawel Jakub Dawidek static void 9922d1661a5SPawel Jakub Dawidek g_raid3_scatter(struct bio *pbp) 9932d1661a5SPawel Jakub Dawidek { 9942d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 9952d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 9962d1661a5SPawel Jakub Dawidek struct bio *bp, *cbp; 9972d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 9982d1661a5SPawel Jakub Dawidek 9992d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 10002d1661a5SPawel Jakub Dawidek bp = NULL; 10012d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10022d1661a5SPawel Jakub Dawidek /* 10032d1661a5SPawel Jakub Dawidek * Find bio for which we should calculate data. 10042d1661a5SPawel Jakub Dawidek */ 10052d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10062d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 10072d1661a5SPawel Jakub Dawidek bp = cbp; 10082d1661a5SPawel Jakub Dawidek break; 10092d1661a5SPawel Jakub Dawidek } 10102d1661a5SPawel Jakub Dawidek } 10112d1661a5SPawel Jakub Dawidek KASSERT(bp != NULL, ("NULL parity bio.")); 10122d1661a5SPawel Jakub Dawidek } 10132d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 10142d1661a5SPawel Jakub Dawidek cadd = padd = 0; 10152d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 10162d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10172d1661a5SPawel Jakub Dawidek if (cbp == bp) 10182d1661a5SPawel Jakub Dawidek continue; 10192d1661a5SPawel Jakub Dawidek bcopy(pbp->bio_data + padd, cbp->bio_data + cadd, atom); 10202d1661a5SPawel Jakub Dawidek padd += atom; 10212d1661a5SPawel Jakub Dawidek } 10222d1661a5SPawel Jakub Dawidek cadd += atom; 10232d1661a5SPawel Jakub Dawidek } 10242d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10252d1661a5SPawel Jakub Dawidek struct bio *tmpbp; 10262d1661a5SPawel Jakub Dawidek 10272d1661a5SPawel Jakub Dawidek /* 10282d1661a5SPawel Jakub Dawidek * Calculate parity. 10292d1661a5SPawel Jakub Dawidek */ 10302d1661a5SPawel Jakub Dawidek bzero(bp->bio_data, bp->bio_length); 10312d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 10322d1661a5SPawel Jakub Dawidek if (cbp == bp) 10332d1661a5SPawel Jakub Dawidek continue; 10342d1661a5SPawel Jakub Dawidek g_raid3_xor(cbp->bio_data, bp->bio_data, bp->bio_data, 10352d1661a5SPawel Jakub Dawidek bp->bio_length); 10362d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_NODISK) != 0) 10372d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 10382d1661a5SPawel Jakub Dawidek } 10392d1661a5SPawel Jakub Dawidek } 10402d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10412d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 10422d1661a5SPawel Jakub Dawidek 10432d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 10442d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 10452d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 10462d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 1047d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 1048d97d5ee9SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 1049d97d5ee9SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 105079e61493SPawel Jakub Dawidek cp->index++; 10512d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 10522d1661a5SPawel Jakub Dawidek } 10532d1661a5SPawel Jakub Dawidek } 10542d1661a5SPawel Jakub Dawidek 10552d1661a5SPawel Jakub Dawidek static void 10562d1661a5SPawel Jakub Dawidek g_raid3_gather(struct bio *pbp) 10572d1661a5SPawel Jakub Dawidek { 10582d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 10592d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1060f5a2f7feSPawel Jakub Dawidek struct bio *xbp, *fbp, *cbp; 10612d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 10622d1661a5SPawel Jakub Dawidek 10632d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 10642d1661a5SPawel Jakub Dawidek /* 1065f5a2f7feSPawel Jakub Dawidek * Find bio for which we have to calculate data. 10662d1661a5SPawel Jakub Dawidek * While going through this path, check if all requests 10672d1661a5SPawel Jakub Dawidek * succeeded, if not, deny whole request. 1068f5a2f7feSPawel Jakub Dawidek * If we're in COMPLETE mode, we allow one request to fail, 1069f5a2f7feSPawel Jakub Dawidek * so if we find one, we're sending it to the parity consumer. 1070f5a2f7feSPawel Jakub Dawidek * If there are more failed requests, we deny whole request. 10712d1661a5SPawel Jakub Dawidek */ 1072f5a2f7feSPawel Jakub Dawidek xbp = fbp = NULL; 10732d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10742d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 1075f5a2f7feSPawel Jakub Dawidek KASSERT(xbp == NULL, ("More than one parity bio.")); 1076f5a2f7feSPawel Jakub Dawidek xbp = cbp; 10772d1661a5SPawel Jakub Dawidek } 10782d1661a5SPawel Jakub Dawidek if (cbp->bio_error == 0) 10792d1661a5SPawel Jakub Dawidek continue; 10802d1661a5SPawel Jakub Dawidek /* 10812d1661a5SPawel Jakub Dawidek * Found failed request. 10822d1661a5SPawel Jakub Dawidek */ 1083f5a2f7feSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, "Request failed."); 10842d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 10852d1661a5SPawel Jakub Dawidek if (disk != NULL) { 10862d1661a5SPawel Jakub Dawidek /* 1087a245a548SPawel Jakub Dawidek * Actually this is pointless to bump genid, 10882d1661a5SPawel Jakub Dawidek * because whole device is fucked up. 10892d1661a5SPawel Jakub Dawidek */ 1090ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 10912d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 10922d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 10932d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 10942d1661a5SPawel Jakub Dawidek } 1095f5a2f7feSPawel Jakub Dawidek if (fbp == NULL) { 1096f5a2f7feSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_DEGRADED) != 0) { 10972d1661a5SPawel Jakub Dawidek /* 1098f5a2f7feSPawel Jakub Dawidek * We are already in degraded mode, so we can't 1099f5a2f7feSPawel Jakub Dawidek * accept any failures. 11002d1661a5SPawel Jakub Dawidek */ 1101f5a2f7feSPawel Jakub Dawidek if (pbp->bio_error == 0) 1102f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11032d1661a5SPawel Jakub Dawidek } else { 1104f5a2f7feSPawel Jakub Dawidek fbp = cbp; 11052d1661a5SPawel Jakub Dawidek } 1106f5a2f7feSPawel Jakub Dawidek } else { 11072d1661a5SPawel Jakub Dawidek /* 11082d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 11092d1661a5SPawel Jakub Dawidek */ 11102d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 1111f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11122d1661a5SPawel Jakub Dawidek } 11132d1661a5SPawel Jakub Dawidek } 11142d1661a5SPawel Jakub Dawidek if (pbp->bio_error != 0) 11152d1661a5SPawel Jakub Dawidek goto finish; 1116dba915cfSPawel Jakub Dawidek if (fbp != NULL && (pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1117dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_VERIFY; 1118dba915cfSPawel Jakub Dawidek if (xbp != fbp) 1119dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(xbp, fbp); 1120dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, fbp); 1121dba915cfSPawel Jakub Dawidek } else if (fbp != NULL) { 11222d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 11232d1661a5SPawel Jakub Dawidek 11242d1661a5SPawel Jakub Dawidek /* 11252d1661a5SPawel Jakub Dawidek * One request failed, so send the same request to 11262d1661a5SPawel Jakub Dawidek * the parity consumer. 11272d1661a5SPawel Jakub Dawidek */ 1128f5a2f7feSPawel Jakub Dawidek disk = pbp->bio_driver2; 11292d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 1130f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11312d1661a5SPawel Jakub Dawidek goto finish; 11322d1661a5SPawel Jakub Dawidek } 11332d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 11342d1661a5SPawel Jakub Dawidek pbp->bio_inbed--; 1135f5a2f7feSPawel Jakub Dawidek fbp->bio_flags &= ~(BIO_DONE | BIO_ERROR); 1136f5a2f7feSPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 1137f5a2f7feSPawel Jakub Dawidek fbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1138f5a2f7feSPawel Jakub Dawidek fbp->bio_error = 0; 1139f5a2f7feSPawel Jakub Dawidek fbp->bio_completed = 0; 1140f5a2f7feSPawel Jakub Dawidek fbp->bio_children = 0; 1141f5a2f7feSPawel Jakub Dawidek fbp->bio_inbed = 0; 11422d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 1143f5a2f7feSPawel Jakub Dawidek fbp->bio_caller2 = disk; 1144f5a2f7feSPawel Jakub Dawidek fbp->bio_to = cp->provider; 1145f5a2f7feSPawel Jakub Dawidek G_RAID3_LOGREQ(3, fbp, "Sending request (recover)."); 1146d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 11472d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 11482d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 114979e61493SPawel Jakub Dawidek cp->index++; 1150f5a2f7feSPawel Jakub Dawidek g_io_request(fbp, cp); 11512d1661a5SPawel Jakub Dawidek return; 11522d1661a5SPawel Jakub Dawidek } 1153f5a2f7feSPawel Jakub Dawidek if (xbp != NULL) { 1154f5a2f7feSPawel Jakub Dawidek /* 1155f5a2f7feSPawel Jakub Dawidek * Calculate parity. 1156f5a2f7feSPawel Jakub Dawidek */ 1157f5a2f7feSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 1158f5a2f7feSPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) 1159f5a2f7feSPawel Jakub Dawidek continue; 1160f5a2f7feSPawel Jakub Dawidek g_raid3_xor(cbp->bio_data, xbp->bio_data, xbp->bio_data, 1161f5a2f7feSPawel Jakub Dawidek xbp->bio_length); 1162f5a2f7feSPawel Jakub Dawidek } 1163f5a2f7feSPawel Jakub Dawidek xbp->bio_cflags &= ~G_RAID3_BIO_CFLAG_PARITY; 1164dba915cfSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1165dba915cfSPawel Jakub Dawidek if (!g_raid3_is_zero(xbp)) { 1166dba915cfSPawel Jakub Dawidek g_raid3_parity_mismatch++; 1167dba915cfSPawel Jakub Dawidek pbp->bio_error = EIO; 1168dba915cfSPawel Jakub Dawidek goto finish; 1169dba915cfSPawel Jakub Dawidek } 1170dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, xbp); 1171dba915cfSPawel Jakub Dawidek } 11722d1661a5SPawel Jakub Dawidek } 11732d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 11742d1661a5SPawel Jakub Dawidek cadd = padd = 0; 11752d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 11762d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 11772d1661a5SPawel Jakub Dawidek bcopy(cbp->bio_data + cadd, pbp->bio_data + padd, atom); 11782d1661a5SPawel Jakub Dawidek pbp->bio_completed += atom; 11792d1661a5SPawel Jakub Dawidek padd += atom; 11802d1661a5SPawel Jakub Dawidek } 11812d1661a5SPawel Jakub Dawidek cadd += atom; 11822d1661a5SPawel Jakub Dawidek } 11832d1661a5SPawel Jakub Dawidek finish: 11842d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 11852d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 11864cf67afeSPawel Jakub Dawidek else { 11874cf67afeSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) 11884cf67afeSPawel Jakub Dawidek G_RAID3_LOGREQ(1, pbp, "Verification error."); 11892d1661a5SPawel Jakub Dawidek else 11902d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 11914cf67afeSPawel Jakub Dawidek } 1192dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_MASK; 11932d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 11942d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 11952d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 11962d1661a5SPawel Jakub Dawidek } 11972d1661a5SPawel Jakub Dawidek 11982d1661a5SPawel Jakub Dawidek static void 11992d1661a5SPawel Jakub Dawidek g_raid3_done(struct bio *bp) 12002d1661a5SPawel Jakub Dawidek { 12012d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12022d1661a5SPawel Jakub Dawidek 12032d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 12042d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_REGULAR; 12052d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Regular request done (error=%d).", bp->bio_error); 12062d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 12072d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 12082d1661a5SPawel Jakub Dawidek wakeup(sc); 12092d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 12102d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 12112d1661a5SPawel Jakub Dawidek } 12122d1661a5SPawel Jakub Dawidek 12132d1661a5SPawel Jakub Dawidek static void 12142d1661a5SPawel Jakub Dawidek g_raid3_regular_request(struct bio *cbp) 12152d1661a5SPawel Jakub Dawidek { 12162d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12172d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 12182d1661a5SPawel Jakub Dawidek struct bio *pbp; 12192d1661a5SPawel Jakub Dawidek 12202d1661a5SPawel Jakub Dawidek g_topology_assert_not(); 12212d1661a5SPawel Jakub Dawidek 122279e61493SPawel Jakub Dawidek cbp->bio_from->index--; 12232d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 12242d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 12252d1661a5SPawel Jakub Dawidek disk = cbp->bio_from->private; 12262d1661a5SPawel Jakub Dawidek if (disk == NULL) { 12272d1661a5SPawel Jakub Dawidek g_topology_lock(); 12282d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cbp->bio_from); 12292d1661a5SPawel Jakub Dawidek g_topology_unlock(); 12302d1661a5SPawel Jakub Dawidek } 12312d1661a5SPawel Jakub Dawidek 12322d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Request finished."); 12332d1661a5SPawel Jakub Dawidek pbp->bio_inbed++; 12342d1661a5SPawel Jakub Dawidek KASSERT(pbp->bio_inbed <= pbp->bio_children, 12352d1661a5SPawel Jakub Dawidek ("bio_inbed (%u) is bigger than bio_children (%u).", pbp->bio_inbed, 12362d1661a5SPawel Jakub Dawidek pbp->bio_children)); 12372d1661a5SPawel Jakub Dawidek if (pbp->bio_inbed != pbp->bio_children) 12382d1661a5SPawel Jakub Dawidek return; 12392d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 12402d1661a5SPawel Jakub Dawidek case BIO_READ: 12412d1661a5SPawel Jakub Dawidek g_raid3_gather(pbp); 12422d1661a5SPawel Jakub Dawidek break; 12432d1661a5SPawel Jakub Dawidek case BIO_WRITE: 12442d1661a5SPawel Jakub Dawidek case BIO_DELETE: 12452d1661a5SPawel Jakub Dawidek { 12462d1661a5SPawel Jakub Dawidek int error = 0; 12472d1661a5SPawel Jakub Dawidek 12482d1661a5SPawel Jakub Dawidek pbp->bio_completed = pbp->bio_length; 12492d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) { 12502d1661a5SPawel Jakub Dawidek if (cbp->bio_error != 0) { 12512d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 12522d1661a5SPawel Jakub Dawidek if (disk != NULL) { 1253ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 12542d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 12552d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 12562d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 12572d1661a5SPawel Jakub Dawidek } 12582d1661a5SPawel Jakub Dawidek if (error == 0) 12592d1661a5SPawel Jakub Dawidek error = cbp->bio_error; 12602d1661a5SPawel Jakub Dawidek else if (pbp->bio_error == 0) { 12612d1661a5SPawel Jakub Dawidek /* 12622d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 12632d1661a5SPawel Jakub Dawidek */ 12642d1661a5SPawel Jakub Dawidek pbp->bio_error = error; 12652d1661a5SPawel Jakub Dawidek } 12662d1661a5SPawel Jakub Dawidek } 12672d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 12682d1661a5SPawel Jakub Dawidek } 12692d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 12702d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 12712d1661a5SPawel Jakub Dawidek else 12722d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 12732d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_DEGRADED; 12742d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_NOPARITY; 12752d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 12762d1661a5SPawel Jakub Dawidek break; 12772d1661a5SPawel Jakub Dawidek } 12782d1661a5SPawel Jakub Dawidek } 12792d1661a5SPawel Jakub Dawidek } 12802d1661a5SPawel Jakub Dawidek 12812d1661a5SPawel Jakub Dawidek static void 12822d1661a5SPawel Jakub Dawidek g_raid3_sync_done(struct bio *bp) 12832d1661a5SPawel Jakub Dawidek { 12842d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12852d1661a5SPawel Jakub Dawidek 12862d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request delivered."); 12872d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 12882d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_SYNC; 12892d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 12902d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 12912d1661a5SPawel Jakub Dawidek wakeup(sc); 12922d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 12932d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 12942d1661a5SPawel Jakub Dawidek } 12952d1661a5SPawel Jakub Dawidek 12962d1661a5SPawel Jakub Dawidek static void 12972d1661a5SPawel Jakub Dawidek g_raid3_start(struct bio *bp) 12982d1661a5SPawel Jakub Dawidek { 12992d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 13002d1661a5SPawel Jakub Dawidek 13012d1661a5SPawel Jakub Dawidek sc = bp->bio_to->geom->softc; 13022d1661a5SPawel Jakub Dawidek /* 13032d1661a5SPawel Jakub Dawidek * If sc == NULL or there are no valid disks, provider's error 13042d1661a5SPawel Jakub Dawidek * should be set and g_raid3_start() should not be called at all. 13052d1661a5SPawel Jakub Dawidek */ 13062d1661a5SPawel Jakub Dawidek KASSERT(sc != NULL && (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 13072d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE), 13082d1661a5SPawel Jakub Dawidek ("Provider's error should be set (error=%d)(device=%s).", 13092d1661a5SPawel Jakub Dawidek bp->bio_to->error, bp->bio_to->name)); 13102d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Request received."); 13112d1661a5SPawel Jakub Dawidek 13122d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 13132d1661a5SPawel Jakub Dawidek case BIO_READ: 13142d1661a5SPawel Jakub Dawidek case BIO_WRITE: 13152d1661a5SPawel Jakub Dawidek case BIO_DELETE: 13162d1661a5SPawel Jakub Dawidek break; 13172d1661a5SPawel Jakub Dawidek case BIO_GETATTR: 13182d1661a5SPawel Jakub Dawidek default: 13192d1661a5SPawel Jakub Dawidek g_io_deliver(bp, EOPNOTSUPP); 13202d1661a5SPawel Jakub Dawidek return; 13212d1661a5SPawel Jakub Dawidek } 13222d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 13232d1661a5SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_queue, bp); 13242d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 13252d1661a5SPawel Jakub Dawidek wakeup(sc); 13262d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 13272d1661a5SPawel Jakub Dawidek } 13282d1661a5SPawel Jakub Dawidek 13292d1661a5SPawel Jakub Dawidek /* 13302d1661a5SPawel Jakub Dawidek * Send one synchronization request. 13312d1661a5SPawel Jakub Dawidek */ 13322d1661a5SPawel Jakub Dawidek static void 13332d1661a5SPawel Jakub Dawidek g_raid3_sync_one(struct g_raid3_softc *sc) 13342d1661a5SPawel Jakub Dawidek { 13352d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 13362d1661a5SPawel Jakub Dawidek struct bio *bp; 13372d1661a5SPawel Jakub Dawidek 13382d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 13392d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s).", sc->sc_name, 13402d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state))); 13412d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 13422d1661a5SPawel Jakub Dawidek KASSERT(disk != NULL, ("No sync disk (%s).", sc->sc_name)); 13432d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 13442d1661a5SPawel Jakub Dawidek ("Disk %s is not marked for synchronization.", 13452d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk))); 13462d1661a5SPawel Jakub Dawidek 13472d1661a5SPawel Jakub Dawidek bp = g_new_bio(); 13482d1661a5SPawel Jakub Dawidek if (bp == NULL) 13492d1661a5SPawel Jakub Dawidek return; 13502d1661a5SPawel Jakub Dawidek bp->bio_parent = NULL; 13512d1661a5SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 13522d1661a5SPawel Jakub Dawidek bp->bio_offset = disk->d_sync.ds_offset * (sc->sc_ndisks - 1); 1353604fce4fSPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 13542d1661a5SPawel Jakub Dawidek bp->bio_cflags = 0; 13552d1661a5SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 13562d1661a5SPawel Jakub Dawidek bp->bio_data = disk->d_sync.ds_data; 13572d1661a5SPawel Jakub Dawidek if (bp->bio_data == NULL) { 13582d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 13592d1661a5SPawel Jakub Dawidek return; 13602d1661a5SPawel Jakub Dawidek } 13612d1661a5SPawel Jakub Dawidek bp->bio_cflags = G_RAID3_BIO_CFLAG_REGSYNC; 13622d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 13632d1661a5SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 13642d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 136579e61493SPawel Jakub Dawidek disk->d_sync.ds_consumer->index++; 13662d1661a5SPawel Jakub Dawidek g_io_request(bp, disk->d_sync.ds_consumer); 13672d1661a5SPawel Jakub Dawidek } 13682d1661a5SPawel Jakub Dawidek 13692d1661a5SPawel Jakub Dawidek static void 13702d1661a5SPawel Jakub Dawidek g_raid3_sync_request(struct bio *bp) 13712d1661a5SPawel Jakub Dawidek { 13722d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 13732d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 13742d1661a5SPawel Jakub Dawidek 137579e61493SPawel Jakub Dawidek bp->bio_from->index--; 13762d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 13772d1661a5SPawel Jakub Dawidek disk = bp->bio_from->private; 13782d1661a5SPawel Jakub Dawidek if (disk == NULL) { 13792d1661a5SPawel Jakub Dawidek g_topology_lock(); 13802d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, bp->bio_from); 13812d1661a5SPawel Jakub Dawidek g_topology_unlock(); 13822d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 13832d1661a5SPawel Jakub Dawidek return; 13842d1661a5SPawel Jakub Dawidek } 13852d1661a5SPawel Jakub Dawidek 13862d1661a5SPawel Jakub Dawidek /* 13872d1661a5SPawel Jakub Dawidek * Synchronization request. 13882d1661a5SPawel Jakub Dawidek */ 13892d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 13902d1661a5SPawel Jakub Dawidek case BIO_READ: 13912d1661a5SPawel Jakub Dawidek { 13922d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 13932d1661a5SPawel Jakub Dawidek u_char *dst, *src; 13942d1661a5SPawel Jakub Dawidek off_t left; 13952d1661a5SPawel Jakub Dawidek u_int atom; 13962d1661a5SPawel Jakub Dawidek 13972d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 13982d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 13992d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 14002d1661a5SPawel Jakub Dawidek bp->bio_error); 14012d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 14022d1661a5SPawel Jakub Dawidek return; 14032d1661a5SPawel Jakub Dawidek } 14042d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 14052d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 14062d1661a5SPawel Jakub Dawidek dst = src = bp->bio_data; 14072d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) { 14082d1661a5SPawel Jakub Dawidek u_int n; 14092d1661a5SPawel Jakub Dawidek 14102d1661a5SPawel Jakub Dawidek /* Parity component. */ 14112d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 14122d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 14132d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 14142d1661a5SPawel Jakub Dawidek src += atom; 14152d1661a5SPawel Jakub Dawidek for (n = 1; n < sc->sc_ndisks - 1; n++) { 14162d1661a5SPawel Jakub Dawidek g_raid3_xor(src, dst, dst, atom); 14172d1661a5SPawel Jakub Dawidek src += atom; 14182d1661a5SPawel Jakub Dawidek } 14192d1661a5SPawel Jakub Dawidek dst += atom; 14202d1661a5SPawel Jakub Dawidek } 14212d1661a5SPawel Jakub Dawidek } else { 14222d1661a5SPawel Jakub Dawidek /* Regular component. */ 14232d1661a5SPawel Jakub Dawidek src += atom * disk->d_no; 14242d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 14252d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 14262d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 14272d1661a5SPawel Jakub Dawidek src += sc->sc_sectorsize; 14282d1661a5SPawel Jakub Dawidek dst += atom; 14292d1661a5SPawel Jakub Dawidek } 14302d1661a5SPawel Jakub Dawidek } 14312d1661a5SPawel Jakub Dawidek bp->bio_offset /= sc->sc_ndisks - 1; 14322d1661a5SPawel Jakub Dawidek bp->bio_length /= sc->sc_ndisks - 1; 14332d1661a5SPawel Jakub Dawidek bp->bio_cmd = BIO_WRITE; 14342d1661a5SPawel Jakub Dawidek bp->bio_cflags = 0; 14352d1661a5SPawel Jakub Dawidek bp->bio_children = bp->bio_inbed = 0; 14362d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 1437d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 14382d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 14392d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 144079e61493SPawel Jakub Dawidek cp->index++; 14412d1661a5SPawel Jakub Dawidek g_io_request(bp, cp); 14422d1661a5SPawel Jakub Dawidek return; 14432d1661a5SPawel Jakub Dawidek } 14442d1661a5SPawel Jakub Dawidek case BIO_WRITE: 1445d2fb9c62SPawel Jakub Dawidek { 1446d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 1447d2fb9c62SPawel Jakub Dawidek 14482d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 14492d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 14502d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 14512d1661a5SPawel Jakub Dawidek bp->bio_error); 14522d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 1453ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 14542d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 14552d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 14562d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 14572d1661a5SPawel Jakub Dawidek return; 14582d1661a5SPawel Jakub Dawidek } 14592d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 1460d2fb9c62SPawel Jakub Dawidek sync = &disk->d_sync; 1461d2fb9c62SPawel Jakub Dawidek sync->ds_offset_done = bp->bio_offset + bp->bio_length; 14622d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 1463d2fb9c62SPawel Jakub Dawidek if (sync->ds_resync != -1) 1464d2fb9c62SPawel Jakub Dawidek return; 1465d2fb9c62SPawel Jakub Dawidek if (sync->ds_offset_done == 1466c0d68b6eSPawel Jakub Dawidek sc->sc_mediasize / (sc->sc_ndisks - 1)) { 14672d1661a5SPawel Jakub Dawidek /* 14682d1661a5SPawel Jakub Dawidek * Disk up-to-date, activate it. 14692d1661a5SPawel Jakub Dawidek */ 14702d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_ACTIVE, 14712d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 14722d1661a5SPawel Jakub Dawidek return; 1473604fce4fSPawel Jakub Dawidek } else if (sync->ds_offset_done % (MAXPHYS * 100) == 0) { 14742d1661a5SPawel Jakub Dawidek /* 14752d1661a5SPawel Jakub Dawidek * Update offset_done on every 100 blocks. 14762d1661a5SPawel Jakub Dawidek * XXX: This should be configurable. 14772d1661a5SPawel Jakub Dawidek */ 14782d1661a5SPawel Jakub Dawidek g_topology_lock(); 14792d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 14802d1661a5SPawel Jakub Dawidek g_topology_unlock(); 14812d1661a5SPawel Jakub Dawidek } 14822d1661a5SPawel Jakub Dawidek return; 1483d2fb9c62SPawel Jakub Dawidek } 14842d1661a5SPawel Jakub Dawidek default: 14852d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Invalid command here: %u (device=%s)", 14862d1661a5SPawel Jakub Dawidek bp->bio_cmd, sc->sc_name)); 14872d1661a5SPawel Jakub Dawidek break; 14882d1661a5SPawel Jakub Dawidek } 14892d1661a5SPawel Jakub Dawidek } 14902d1661a5SPawel Jakub Dawidek 14912d1661a5SPawel Jakub Dawidek static int 14922d1661a5SPawel Jakub Dawidek g_raid3_register_request(struct bio *pbp) 14932d1661a5SPawel Jakub Dawidek { 14942d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 14952d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 14962d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 14972d1661a5SPawel Jakub Dawidek struct bio *cbp; 14982d1661a5SPawel Jakub Dawidek off_t offset, length; 1499fa6a7837SDavid E. O'Brien u_int n, ndisks; 1500dba915cfSPawel Jakub Dawidek int round_robin, verify; 15012d1661a5SPawel Jakub Dawidek 1502fa6a7837SDavid E. O'Brien ndisks = 0; 15032d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 15042d1661a5SPawel Jakub Dawidek if ((pbp->bio_cflags & G_RAID3_BIO_CFLAG_REGSYNC) != 0 && 15052d1661a5SPawel Jakub Dawidek sc->sc_syncdisk == NULL) { 15062d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, EIO); 15072d1661a5SPawel Jakub Dawidek return (0); 15082d1661a5SPawel Jakub Dawidek } 15092d1661a5SPawel Jakub Dawidek g_raid3_init_bio(pbp); 15102d1661a5SPawel Jakub Dawidek length = pbp->bio_length / (sc->sc_ndisks - 1); 15112d1661a5SPawel Jakub Dawidek offset = pbp->bio_offset / (sc->sc_ndisks - 1); 1512dba915cfSPawel Jakub Dawidek round_robin = verify = 0; 15132d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 15142d1661a5SPawel Jakub Dawidek case BIO_READ: 1515dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 1516dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1517dba915cfSPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_VERIFY; 1518dba915cfSPawel Jakub Dawidek verify = 1; 1519dba915cfSPawel Jakub Dawidek ndisks = sc->sc_ndisks; 1520dba915cfSPawel Jakub Dawidek } else { 1521dba915cfSPawel Jakub Dawidek verify = 0; 15222d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks - 1; 1523dba915cfSPawel Jakub Dawidek } 1524dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0 && 1525dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1526dba915cfSPawel Jakub Dawidek round_robin = 1; 1527dba915cfSPawel Jakub Dawidek } else { 1528dba915cfSPawel Jakub Dawidek round_robin = 0; 1529dba915cfSPawel Jakub Dawidek } 1530dba915cfSPawel Jakub Dawidek KASSERT(!round_robin || !verify, 1531dba915cfSPawel Jakub Dawidek ("ROUND-ROBIN and VERIFY are mutually exclusive.")); 1532f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = &sc->sc_disks[sc->sc_ndisks - 1]; 15332d1661a5SPawel Jakub Dawidek break; 15342d1661a5SPawel Jakub Dawidek case BIO_WRITE: 15352d1661a5SPawel Jakub Dawidek case BIO_DELETE: 1536d2fb9c62SPawel Jakub Dawidek { 1537d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 1538d2fb9c62SPawel Jakub Dawidek 15394d006a98SPawel Jakub Dawidek if (sc->sc_idle) 15404d006a98SPawel Jakub Dawidek g_raid3_unidle(sc); 15414d006a98SPawel Jakub Dawidek 15422d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks; 1543d2fb9c62SPawel Jakub Dawidek 1544d2fb9c62SPawel Jakub Dawidek if (sc->sc_syncdisk == NULL) 15452d1661a5SPawel Jakub Dawidek break; 1546d2fb9c62SPawel Jakub Dawidek sync = &sc->sc_syncdisk->d_sync; 1547d2fb9c62SPawel Jakub Dawidek if (offset >= sync->ds_offset) 1548d2fb9c62SPawel Jakub Dawidek break; 1549d2fb9c62SPawel Jakub Dawidek if (offset + length <= sync->ds_offset_done) 1550d2fb9c62SPawel Jakub Dawidek break; 1551d2fb9c62SPawel Jakub Dawidek if (offset >= sync->ds_resync && sync->ds_resync != -1) 1552d2fb9c62SPawel Jakub Dawidek break; 1553604fce4fSPawel Jakub Dawidek sync->ds_resync = offset - (offset % MAXPHYS); 1554d2fb9c62SPawel Jakub Dawidek break; 1555d2fb9c62SPawel Jakub Dawidek } 15562d1661a5SPawel Jakub Dawidek } 15572d1661a5SPawel Jakub Dawidek for (n = 0; n < ndisks; n++) { 15582d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 15592d1661a5SPawel Jakub Dawidek cbp = g_raid3_clone_bio(sc, pbp); 15602d1661a5SPawel Jakub Dawidek if (cbp == NULL) { 15612d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 15622d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 1563a65a0da2SPawel Jakub Dawidek /* 1564a65a0da2SPawel Jakub Dawidek * To prevent deadlock, we must run back up 1565a65a0da2SPawel Jakub Dawidek * with the ENOMEM for failed requests of any 1566a65a0da2SPawel Jakub Dawidek * of our consumers. Our own sync requests 1567a65a0da2SPawel Jakub Dawidek * can stick around, as they are finite. 1568a65a0da2SPawel Jakub Dawidek */ 1569a65a0da2SPawel Jakub Dawidek if ((pbp->bio_cflags & 1570a65a0da2SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_REGULAR) != 0) { 1571a65a0da2SPawel Jakub Dawidek g_io_deliver(pbp, ENOMEM); 1572a65a0da2SPawel Jakub Dawidek return (0); 1573a65a0da2SPawel Jakub Dawidek } 15742d1661a5SPawel Jakub Dawidek return (ENOMEM); 15752d1661a5SPawel Jakub Dawidek } 15762d1661a5SPawel Jakub Dawidek cbp->bio_offset = offset; 15772d1661a5SPawel Jakub Dawidek cbp->bio_length = length; 15782d1661a5SPawel Jakub Dawidek cbp->bio_done = g_raid3_done; 15792d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 15802d1661a5SPawel Jakub Dawidek case BIO_READ: 15812d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 15822d1661a5SPawel Jakub Dawidek /* 15832d1661a5SPawel Jakub Dawidek * Replace invalid component with the parity 15842d1661a5SPawel Jakub Dawidek * component. 15852d1661a5SPawel Jakub Dawidek */ 15862d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 15872d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 15882d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 1589f5a2f7feSPawel Jakub Dawidek } else if (round_robin && 1590f5a2f7feSPawel Jakub Dawidek disk->d_no == sc->sc_round_robin) { 1591f5a2f7feSPawel Jakub Dawidek /* 1592f5a2f7feSPawel Jakub Dawidek * In round-robin mode skip one data component 1593f5a2f7feSPawel Jakub Dawidek * and use parity component when reading. 1594f5a2f7feSPawel Jakub Dawidek */ 1595f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = disk; 1596f5a2f7feSPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 1597f5a2f7feSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1598f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin++; 1599f5a2f7feSPawel Jakub Dawidek round_robin = 0; 1600dba915cfSPawel Jakub Dawidek } else if (verify && disk->d_no == sc->sc_ndisks - 1) { 1601dba915cfSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 16022d1661a5SPawel Jakub Dawidek } 16032d1661a5SPawel Jakub Dawidek break; 16042d1661a5SPawel Jakub Dawidek case BIO_WRITE: 16052d1661a5SPawel Jakub Dawidek case BIO_DELETE: 16062d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 16072d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 16082d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 16092d1661a5SPawel Jakub Dawidek /* 16102d1661a5SPawel Jakub Dawidek * Active parity component, mark it as such. 16112d1661a5SPawel Jakub Dawidek */ 16122d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 16132d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_PARITY; 16142d1661a5SPawel Jakub Dawidek } 16152d1661a5SPawel Jakub Dawidek } else { 16162d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 16172d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 16182d1661a5SPawel Jakub Dawidek /* 16192d1661a5SPawel Jakub Dawidek * Parity component is not connected, 16202d1661a5SPawel Jakub Dawidek * so destroy its request. 16212d1661a5SPawel Jakub Dawidek */ 16222d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= 16232d1661a5SPawel Jakub Dawidek G_RAID3_BIO_PFLAG_NOPARITY; 16242d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 16252d1661a5SPawel Jakub Dawidek cbp = NULL; 16262d1661a5SPawel Jakub Dawidek } else { 16272d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 16282d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_NODISK; 16292d1661a5SPawel Jakub Dawidek disk = NULL; 16302d1661a5SPawel Jakub Dawidek } 16312d1661a5SPawel Jakub Dawidek } 16322d1661a5SPawel Jakub Dawidek break; 16332d1661a5SPawel Jakub Dawidek } 16342d1661a5SPawel Jakub Dawidek if (cbp != NULL) 16352d1661a5SPawel Jakub Dawidek cbp->bio_caller2 = disk; 16362d1661a5SPawel Jakub Dawidek } 16372d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 16382d1661a5SPawel Jakub Dawidek case BIO_READ: 1639f5a2f7feSPawel Jakub Dawidek if (round_robin) { 1640f5a2f7feSPawel Jakub Dawidek /* 1641f5a2f7feSPawel Jakub Dawidek * If we are in round-robin mode and 'round_robin' is 1642f5a2f7feSPawel Jakub Dawidek * still 1, it means, that we skipped parity component 1643f5a2f7feSPawel Jakub Dawidek * for this read and must reset sc_round_robin field. 1644f5a2f7feSPawel Jakub Dawidek */ 1645f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 1646f5a2f7feSPawel Jakub Dawidek } 16472d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 16482d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 16492d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 16502d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 16512d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 1652d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 16532d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", 16542d1661a5SPawel Jakub Dawidek cp->provider->name, cp->acr, cp->acw, cp->ace)); 165579e61493SPawel Jakub Dawidek cp->index++; 16562d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 16572d1661a5SPawel Jakub Dawidek } 16582d1661a5SPawel Jakub Dawidek break; 16592d1661a5SPawel Jakub Dawidek case BIO_WRITE: 16602d1661a5SPawel Jakub Dawidek case BIO_DELETE: 16612d1661a5SPawel Jakub Dawidek /* 16622d1661a5SPawel Jakub Dawidek * Bump syncid on first write. 16632d1661a5SPawel Jakub Dawidek */ 1664ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) { 1665a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 16662d1661a5SPawel Jakub Dawidek g_topology_lock(); 1667d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(sc); 16682d1661a5SPawel Jakub Dawidek g_topology_unlock(); 16692d1661a5SPawel Jakub Dawidek } 16702d1661a5SPawel Jakub Dawidek g_raid3_scatter(pbp); 16712d1661a5SPawel Jakub Dawidek break; 16722d1661a5SPawel Jakub Dawidek } 16732d1661a5SPawel Jakub Dawidek return (0); 16742d1661a5SPawel Jakub Dawidek } 16752d1661a5SPawel Jakub Dawidek 16762d1661a5SPawel Jakub Dawidek static int 16772d1661a5SPawel Jakub Dawidek g_raid3_can_destroy(struct g_raid3_softc *sc) 16782d1661a5SPawel Jakub Dawidek { 16792d1661a5SPawel Jakub Dawidek struct g_geom *gp; 16802d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 16812d1661a5SPawel Jakub Dawidek 16822d1661a5SPawel Jakub Dawidek g_topology_assert(); 16832d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 16842d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 16852d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 16862d1661a5SPawel Jakub Dawidek return (0); 16872d1661a5SPawel Jakub Dawidek } 16882d1661a5SPawel Jakub Dawidek gp = sc->sc_sync.ds_geom; 16892d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 16902d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 16912d1661a5SPawel Jakub Dawidek return (0); 16922d1661a5SPawel Jakub Dawidek } 16932d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "No I/O requests for %s, it can be destroyed.", 16942d1661a5SPawel Jakub Dawidek sc->sc_name); 16952d1661a5SPawel Jakub Dawidek return (1); 16962d1661a5SPawel Jakub Dawidek } 16972d1661a5SPawel Jakub Dawidek 16982d1661a5SPawel Jakub Dawidek static int 16992d1661a5SPawel Jakub Dawidek g_raid3_try_destroy(struct g_raid3_softc *sc) 17002d1661a5SPawel Jakub Dawidek { 17012d1661a5SPawel Jakub Dawidek 17024ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 17034ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 17044ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 17054ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 17064ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 17074ed854e8SPawel Jakub Dawidek } 17084ed854e8SPawel Jakub Dawidek 17092d1661a5SPawel Jakub Dawidek g_topology_lock(); 17102d1661a5SPawel Jakub Dawidek if (!g_raid3_can_destroy(sc)) { 17112d1661a5SPawel Jakub Dawidek g_topology_unlock(); 17122d1661a5SPawel Jakub Dawidek return (0); 17132d1661a5SPawel Jakub Dawidek } 1714a245a548SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_WAIT) != 0) { 17152d1661a5SPawel Jakub Dawidek g_topology_unlock(); 17162d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 17172d1661a5SPawel Jakub Dawidek &sc->sc_worker); 17182d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_worker); 17192d1661a5SPawel Jakub Dawidek sc->sc_worker = NULL; 17202d1661a5SPawel Jakub Dawidek } else { 17212d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(sc); 17222d1661a5SPawel Jakub Dawidek g_topology_unlock(); 17232d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 17242d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 17252d1661a5SPawel Jakub Dawidek } 17262d1661a5SPawel Jakub Dawidek return (1); 17272d1661a5SPawel Jakub Dawidek } 17282d1661a5SPawel Jakub Dawidek 17292d1661a5SPawel Jakub Dawidek /* 17302d1661a5SPawel Jakub Dawidek * Worker thread. 17312d1661a5SPawel Jakub Dawidek */ 17322d1661a5SPawel Jakub Dawidek static void 17332d1661a5SPawel Jakub Dawidek g_raid3_worker(void *arg) 17342d1661a5SPawel Jakub Dawidek { 17352d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 17362d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1737d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 17382d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 17392d1661a5SPawel Jakub Dawidek struct bio *bp; 17402d1661a5SPawel Jakub Dawidek u_int nreqs; 17412d1661a5SPawel Jakub Dawidek 17422d1661a5SPawel Jakub Dawidek sc = arg; 174363710c4dSJohn Baldwin mtx_lock_spin(&sched_lock); 174463710c4dSJohn Baldwin sched_prio(curthread, PRIBIO); 174563710c4dSJohn Baldwin mtx_unlock_spin(&sched_lock); 17462d1661a5SPawel Jakub Dawidek 17472d1661a5SPawel Jakub Dawidek nreqs = 0; 17482d1661a5SPawel Jakub Dawidek for (;;) { 17492d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: Let's see...", __func__); 17502d1661a5SPawel Jakub Dawidek /* 17512d1661a5SPawel Jakub Dawidek * First take a look at events. 17522d1661a5SPawel Jakub Dawidek * This is important to handle events before any I/O requests. 17532d1661a5SPawel Jakub Dawidek */ 17542d1661a5SPawel Jakub Dawidek ep = g_raid3_event_get(sc); 1755d97d5ee9SPawel Jakub Dawidek if (ep != NULL && g_topology_try_lock()) { 1756d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 17572d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) { 17582d1661a5SPawel Jakub Dawidek /* Update only device status. */ 17592d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, 17602d1661a5SPawel Jakub Dawidek "Running event for device %s.", 17612d1661a5SPawel Jakub Dawidek sc->sc_name); 17622d1661a5SPawel Jakub Dawidek ep->e_error = 0; 1763d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 1); 17642d1661a5SPawel Jakub Dawidek } else { 17652d1661a5SPawel Jakub Dawidek /* Update disk status. */ 17662d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Running event for disk %s.", 17672d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(ep->e_disk)); 17682d1661a5SPawel Jakub Dawidek ep->e_error = g_raid3_update_disk(ep->e_disk, 1769d97d5ee9SPawel Jakub Dawidek ep->e_state); 17702d1661a5SPawel Jakub Dawidek if (ep->e_error == 0) 1771d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 0); 17722d1661a5SPawel Jakub Dawidek } 17732d1661a5SPawel Jakub Dawidek g_topology_unlock(); 17742d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) { 17752d1661a5SPawel Jakub Dawidek KASSERT(ep->e_error == 0, 17762d1661a5SPawel Jakub Dawidek ("Error cannot be handled.")); 17772d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 17782d1661a5SPawel Jakub Dawidek } else { 17792d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 17802d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 17812d1661a5SPawel Jakub Dawidek ep); 17822d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 17832d1661a5SPawel Jakub Dawidek wakeup(ep); 17842d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 17852d1661a5SPawel Jakub Dawidek } 17862d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 17872d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 17882d1661a5SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) 17892d1661a5SPawel Jakub Dawidek kthread_exit(0); 17902d1661a5SPawel Jakub Dawidek } 17912d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 1.", __func__); 17922d1661a5SPawel Jakub Dawidek continue; 17932d1661a5SPawel Jakub Dawidek } 17942d1661a5SPawel Jakub Dawidek /* 17952d1661a5SPawel Jakub Dawidek * Now I/O requests. 17962d1661a5SPawel Jakub Dawidek */ 17972d1661a5SPawel Jakub Dawidek /* Get first request from the queue. */ 17982d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 17992d1661a5SPawel Jakub Dawidek bp = bioq_first(&sc->sc_queue); 18002d1661a5SPawel Jakub Dawidek if (bp == NULL) { 1801d97d5ee9SPawel Jakub Dawidek if (ep != NULL) { 1802d97d5ee9SPawel Jakub Dawidek /* 1803d97d5ee9SPawel Jakub Dawidek * No I/O requests and topology lock was 1804d97d5ee9SPawel Jakub Dawidek * already held? Try again. 1805d97d5ee9SPawel Jakub Dawidek */ 1806d97d5ee9SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 18077f456a7dSPawel Jakub Dawidek tsleep(ep, PRIBIO, "r3:top1", hz / 5); 1808d97d5ee9SPawel Jakub Dawidek continue; 1809d97d5ee9SPawel Jakub Dawidek } 18102d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 18112d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 18122d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 18132d1661a5SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) 18142d1661a5SPawel Jakub Dawidek kthread_exit(0); 18152d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 18162d1661a5SPawel Jakub Dawidek } 18172d1661a5SPawel Jakub Dawidek } 18182d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL && 18192d1661a5SPawel Jakub Dawidek (bp == NULL || nreqs > g_raid3_reqs_per_sync)) { 18202d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 18212d1661a5SPawel Jakub Dawidek /* 18222d1661a5SPawel Jakub Dawidek * It is time for synchronization... 18232d1661a5SPawel Jakub Dawidek */ 18242d1661a5SPawel Jakub Dawidek nreqs = 0; 18252d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 1826d2fb9c62SPawel Jakub Dawidek sync = &disk->d_sync; 1827d2fb9c62SPawel Jakub Dawidek if (sync->ds_offset < 1828c0d68b6eSPawel Jakub Dawidek sc->sc_mediasize / (sc->sc_ndisks - 1) && 1829d2fb9c62SPawel Jakub Dawidek sync->ds_offset == sync->ds_offset_done) { 1830d2fb9c62SPawel Jakub Dawidek if (sync->ds_resync != -1) { 1831d2fb9c62SPawel Jakub Dawidek sync->ds_offset = sync->ds_resync; 1832d2fb9c62SPawel Jakub Dawidek sync->ds_offset_done = sync->ds_resync; 1833d2fb9c62SPawel Jakub Dawidek sync->ds_resync = -1; 1834d2fb9c62SPawel Jakub Dawidek } 18352d1661a5SPawel Jakub Dawidek g_raid3_sync_one(sc); 18362d1661a5SPawel Jakub Dawidek } 18372d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 2.", __func__); 18382d1661a5SPawel Jakub Dawidek goto sleep; 18392d1661a5SPawel Jakub Dawidek } 18402d1661a5SPawel Jakub Dawidek if (bp == NULL) { 18419bb09163SPawel Jakub Dawidek if (g_raid3_check_idle(sc)) { 18424d006a98SPawel Jakub Dawidek u_int idletime; 18434d006a98SPawel Jakub Dawidek 18444d006a98SPawel Jakub Dawidek idletime = g_raid3_idletime; 18454d006a98SPawel Jakub Dawidek if (idletime == 0) 18464d006a98SPawel Jakub Dawidek idletime = 1; 18474d006a98SPawel Jakub Dawidek idletime *= hz; 18484d006a98SPawel Jakub Dawidek if (msleep(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, 18499bb09163SPawel Jakub Dawidek "r3:w1", idletime) == EWOULDBLOCK) { 18509bb09163SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 3.", 18514d006a98SPawel Jakub Dawidek __func__); 18524d006a98SPawel Jakub Dawidek /* 18534d006a98SPawel Jakub Dawidek * No I/O requests in 'idletime' 18544d006a98SPawel Jakub Dawidek * seconds, so mark components as clean. 18554d006a98SPawel Jakub Dawidek */ 18564d006a98SPawel Jakub Dawidek g_raid3_idle(sc); 18574d006a98SPawel Jakub Dawidek } 18589bb09163SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 4.", __func__); 18599bb09163SPawel Jakub Dawidek } else { 18609bb09163SPawel Jakub Dawidek MSLEEP(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, 18619bb09163SPawel Jakub Dawidek "r3:w2", 0); 18624d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 5.", __func__); 18634d006a98SPawel Jakub Dawidek } 18642d1661a5SPawel Jakub Dawidek continue; 18652d1661a5SPawel Jakub Dawidek } 18662d1661a5SPawel Jakub Dawidek nreqs++; 18672d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 18682d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 18692d1661a5SPawel Jakub Dawidek 18702d1661a5SPawel Jakub Dawidek if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) != 0) { 18712d1661a5SPawel Jakub Dawidek g_raid3_regular_request(bp); 18722d1661a5SPawel Jakub Dawidek } else if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) != 0) { 18732d1661a5SPawel Jakub Dawidek u_int timeout, sps; 18742d1661a5SPawel Jakub Dawidek 18752d1661a5SPawel Jakub Dawidek g_raid3_sync_request(bp); 18762d1661a5SPawel Jakub Dawidek sleep: 18772d1661a5SPawel Jakub Dawidek sps = atomic_load_acq_int(&g_raid3_syncs_per_sec); 18782d1661a5SPawel Jakub Dawidek if (sps == 0) { 1879d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 6.", __func__); 1880d97d5ee9SPawel Jakub Dawidek continue; 1881d97d5ee9SPawel Jakub Dawidek } 1882d97d5ee9SPawel Jakub Dawidek if (ep != NULL) { 1883d97d5ee9SPawel Jakub Dawidek /* 1884d97d5ee9SPawel Jakub Dawidek * We have some pending events, don't sleep now. 1885d97d5ee9SPawel Jakub Dawidek */ 1886d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 7.", __func__); 18877f456a7dSPawel Jakub Dawidek tsleep(ep, PRIBIO, "r3:top2", hz / 5); 18882d1661a5SPawel Jakub Dawidek continue; 18892d1661a5SPawel Jakub Dawidek } 18902d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 18912d1661a5SPawel Jakub Dawidek if (bioq_first(&sc->sc_queue) != NULL) { 18922d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 1893d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 8.", __func__); 18942d1661a5SPawel Jakub Dawidek continue; 18952d1661a5SPawel Jakub Dawidek } 18962d1661a5SPawel Jakub Dawidek timeout = hz / sps; 18972d1661a5SPawel Jakub Dawidek if (timeout == 0) 18982d1661a5SPawel Jakub Dawidek timeout = 1; 18992d1661a5SPawel Jakub Dawidek MSLEEP(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, "r3:w2", 19002d1661a5SPawel Jakub Dawidek timeout); 19012d1661a5SPawel Jakub Dawidek } else { 19022d1661a5SPawel Jakub Dawidek if (g_raid3_register_request(bp) != 0) { 19032d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 19042d1661a5SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_queue, bp); 19052d1661a5SPawel Jakub Dawidek MSLEEP(&sc->sc_queue, &sc->sc_queue_mtx, 19062d1661a5SPawel Jakub Dawidek PRIBIO | PDROP, "r3:lowmem", hz / 10); 19072d1661a5SPawel Jakub Dawidek } 19082d1661a5SPawel Jakub Dawidek } 1909d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 9.", __func__); 19102d1661a5SPawel Jakub Dawidek } 19112d1661a5SPawel Jakub Dawidek } 19122d1661a5SPawel Jakub Dawidek 19132d1661a5SPawel Jakub Dawidek /* 19142d1661a5SPawel Jakub Dawidek * Open disk's consumer if needed. 19152d1661a5SPawel Jakub Dawidek */ 19162d1661a5SPawel Jakub Dawidek static void 19172d1661a5SPawel Jakub Dawidek g_raid3_update_access(struct g_raid3_disk *disk) 19182d1661a5SPawel Jakub Dawidek { 19192d1661a5SPawel Jakub Dawidek struct g_provider *pp; 19202d1661a5SPawel Jakub Dawidek 19212d1661a5SPawel Jakub Dawidek g_topology_assert(); 19222d1661a5SPawel Jakub Dawidek 19232d1661a5SPawel Jakub Dawidek pp = disk->d_softc->sc_provider; 1924d97d5ee9SPawel Jakub Dawidek if (pp == NULL) 19252d1661a5SPawel Jakub Dawidek return; 1926d97d5ee9SPawel Jakub Dawidek if (pp->acw > 0) { 1927d97d5ee9SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) == 0) { 19282d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 19292d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), disk->d_softc->sc_name); 19302d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 1931d97d5ee9SPawel Jakub Dawidek } 1932d97d5ee9SPawel Jakub Dawidek } else if (pp->acw == 0) { 1933d97d5ee9SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) { 19342d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 19352d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), disk->d_softc->sc_name); 19362d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 19372d1661a5SPawel Jakub Dawidek } 19382d1661a5SPawel Jakub Dawidek } 1939d97d5ee9SPawel Jakub Dawidek } 19402d1661a5SPawel Jakub Dawidek 19412d1661a5SPawel Jakub Dawidek static void 19422d1661a5SPawel Jakub Dawidek g_raid3_sync_start(struct g_raid3_softc *sc) 19432d1661a5SPawel Jakub Dawidek { 19442d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 19452d1661a5SPawel Jakub Dawidek int error; 19462d1661a5SPawel Jakub Dawidek u_int n; 19472d1661a5SPawel Jakub Dawidek 19482d1661a5SPawel Jakub Dawidek g_topology_assert(); 19492d1661a5SPawel Jakub Dawidek 19502d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 19512d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 19522d1661a5SPawel Jakub Dawidek sc->sc_state)); 19532d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_syncdisk == NULL, ("Syncdisk is not NULL (%s, %u).", 19542d1661a5SPawel Jakub Dawidek sc->sc_name, sc->sc_state)); 19552d1661a5SPawel Jakub Dawidek disk = NULL; 19562d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 19572d1661a5SPawel Jakub Dawidek if (sc->sc_disks[n].d_state != G_RAID3_DISK_STATE_SYNCHRONIZING) 19582d1661a5SPawel Jakub Dawidek continue; 19592d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 19602d1661a5SPawel Jakub Dawidek break; 19612d1661a5SPawel Jakub Dawidek } 19622d1661a5SPawel Jakub Dawidek if (disk == NULL) 19632d1661a5SPawel Jakub Dawidek return; 19642d1661a5SPawel Jakub Dawidek 19652d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s.", sc->sc_name, 19662d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 19672d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 19682d1661a5SPawel Jakub Dawidek KASSERT(disk->d_sync.ds_consumer == NULL, 19692d1661a5SPawel Jakub Dawidek ("Sync consumer already exists (device=%s, disk=%s).", 19702d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk))); 19712d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = g_new_consumer(sc->sc_sync.ds_geom); 19722d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer->private = disk; 197379e61493SPawel Jakub Dawidek disk->d_sync.ds_consumer->index = 0; 19742d1661a5SPawel Jakub Dawidek error = g_attach(disk->d_sync.ds_consumer, disk->d_softc->sc_provider); 19752d1661a5SPawel Jakub Dawidek KASSERT(error == 0, ("Cannot attach to %s (error=%d).", 19762d1661a5SPawel Jakub Dawidek disk->d_softc->sc_name, error)); 19772d1661a5SPawel Jakub Dawidek error = g_access(disk->d_sync.ds_consumer, 1, 0, 0); 19782d1661a5SPawel Jakub Dawidek KASSERT(error == 0, ("Cannot open %s (error=%d).", 19792d1661a5SPawel Jakub Dawidek disk->d_softc->sc_name, error)); 1980604fce4fSPawel Jakub Dawidek disk->d_sync.ds_data = malloc(MAXPHYS, M_RAID3, M_WAITOK); 19812d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = disk; 19822d1661a5SPawel Jakub Dawidek } 19832d1661a5SPawel Jakub Dawidek 19842d1661a5SPawel Jakub Dawidek /* 19852d1661a5SPawel Jakub Dawidek * Stop synchronization process. 19862d1661a5SPawel Jakub Dawidek * type: 0 - synchronization finished 19872d1661a5SPawel Jakub Dawidek * 1 - synchronization stopped 19882d1661a5SPawel Jakub Dawidek */ 19892d1661a5SPawel Jakub Dawidek static void 19902d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(struct g_raid3_softc *sc, int type) 19912d1661a5SPawel Jakub Dawidek { 19922d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 19932d1661a5SPawel Jakub Dawidek 19942d1661a5SPawel Jakub Dawidek g_topology_assert(); 19952d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 19962d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 19972d1661a5SPawel Jakub Dawidek sc->sc_state)); 19982d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 19992d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = NULL; 20002d1661a5SPawel Jakub Dawidek KASSERT(disk != NULL, ("No disk was synchronized (%s).", sc->sc_name)); 20012d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 20022d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 20032d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 20042d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_consumer == NULL) 20052d1661a5SPawel Jakub Dawidek return; 20062d1661a5SPawel Jakub Dawidek 20072d1661a5SPawel Jakub Dawidek if (type == 0) { 20082d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s finished.", 20092d1661a5SPawel Jakub Dawidek disk->d_softc->sc_name, g_raid3_get_diskname(disk)); 20102d1661a5SPawel Jakub Dawidek } else /* if (type == 1) */ { 20112d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s stopped.", 20122d1661a5SPawel Jakub Dawidek disk->d_softc->sc_name, g_raid3_get_diskname(disk)); 20132d1661a5SPawel Jakub Dawidek } 2014d97d5ee9SPawel Jakub Dawidek g_raid3_kill_consumer(disk->d_softc, disk->d_sync.ds_consumer); 20152d1661a5SPawel Jakub Dawidek free(disk->d_sync.ds_data, M_RAID3); 20162d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 20172d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 20182d1661a5SPawel Jakub Dawidek } 20192d1661a5SPawel Jakub Dawidek 20202d1661a5SPawel Jakub Dawidek static void 20212d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(struct g_raid3_softc *sc) 20222d1661a5SPawel Jakub Dawidek { 20232d1661a5SPawel Jakub Dawidek struct g_provider *pp; 20242d1661a5SPawel Jakub Dawidek 20252d1661a5SPawel Jakub Dawidek g_topology_assert(); 20262d1661a5SPawel Jakub Dawidek 20272d1661a5SPawel Jakub Dawidek pp = g_new_providerf(sc->sc_geom, "raid3/%s", sc->sc_name); 20282d1661a5SPawel Jakub Dawidek pp->mediasize = sc->sc_mediasize; 20292d1661a5SPawel Jakub Dawidek pp->sectorsize = sc->sc_sectorsize; 20302d1661a5SPawel Jakub Dawidek sc->sc_provider = pp; 20312d1661a5SPawel Jakub Dawidek g_error_provider(pp, 0); 20322d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s launched.", sc->sc_name, 20332d1661a5SPawel Jakub Dawidek pp->name); 20342d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED) 20352d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 20362d1661a5SPawel Jakub Dawidek } 20372d1661a5SPawel Jakub Dawidek 20382d1661a5SPawel Jakub Dawidek static void 20392d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(struct g_raid3_softc *sc) 20402d1661a5SPawel Jakub Dawidek { 20412d1661a5SPawel Jakub Dawidek struct bio *bp; 20422d1661a5SPawel Jakub Dawidek 20432d1661a5SPawel Jakub Dawidek g_topology_assert(); 20442d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider != NULL, ("NULL provider (device=%s).", 20452d1661a5SPawel Jakub Dawidek sc->sc_name)); 20462d1661a5SPawel Jakub Dawidek 20472d1661a5SPawel Jakub Dawidek g_error_provider(sc->sc_provider, ENXIO); 20482d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 20492d1661a5SPawel Jakub Dawidek while ((bp = bioq_first(&sc->sc_queue)) != NULL) { 20502d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 20512d1661a5SPawel Jakub Dawidek g_io_deliver(bp, ENXIO); 20522d1661a5SPawel Jakub Dawidek } 20532d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 20542d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s destroyed.", sc->sc_name, 20552d1661a5SPawel Jakub Dawidek sc->sc_provider->name); 20562d1661a5SPawel Jakub Dawidek sc->sc_provider->flags |= G_PF_WITHER; 20572d1661a5SPawel Jakub Dawidek g_orphan_provider(sc->sc_provider, ENXIO); 20582d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 20592d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 20602d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 20612d1661a5SPawel Jakub Dawidek } 20622d1661a5SPawel Jakub Dawidek 20632d1661a5SPawel Jakub Dawidek static void 20642d1661a5SPawel Jakub Dawidek g_raid3_go(void *arg) 20652d1661a5SPawel Jakub Dawidek { 20662d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 20672d1661a5SPawel Jakub Dawidek 20682d1661a5SPawel Jakub Dawidek sc = arg; 20692d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Force device %s start due to timeout.", sc->sc_name); 20702d1661a5SPawel Jakub Dawidek g_raid3_event_send(sc, 0, 20712d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT | G_RAID3_EVENT_DEVICE); 20722d1661a5SPawel Jakub Dawidek } 20732d1661a5SPawel Jakub Dawidek 20742d1661a5SPawel Jakub Dawidek static u_int 20752d1661a5SPawel Jakub Dawidek g_raid3_determine_state(struct g_raid3_disk *disk) 20762d1661a5SPawel Jakub Dawidek { 20772d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 20782d1661a5SPawel Jakub Dawidek u_int state; 20792d1661a5SPawel Jakub Dawidek 20802d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 20812d1661a5SPawel Jakub Dawidek if (sc->sc_syncid == disk->d_sync.ds_syncid) { 20822d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 20832d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) == 0) { 20842d1661a5SPawel Jakub Dawidek /* Disk does not need synchronization. */ 20852d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_ACTIVE; 20862d1661a5SPawel Jakub Dawidek } else { 20872d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 20882d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 20892d1661a5SPawel Jakub Dawidek (disk->d_flags & 20902d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 20912d1661a5SPawel Jakub Dawidek /* 20922d1661a5SPawel Jakub Dawidek * We can start synchronization from 20932d1661a5SPawel Jakub Dawidek * the stored offset. 20942d1661a5SPawel Jakub Dawidek */ 20952d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 20962d1661a5SPawel Jakub Dawidek } else { 20972d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 20982d1661a5SPawel Jakub Dawidek } 20992d1661a5SPawel Jakub Dawidek } 21002d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < sc->sc_syncid) { 21012d1661a5SPawel Jakub Dawidek /* 21022d1661a5SPawel Jakub Dawidek * Reset all synchronization data for this disk, 21032d1661a5SPawel Jakub Dawidek * because if it even was synchronized, it was 21042d1661a5SPawel Jakub Dawidek * synchronized to disks with different syncid. 21052d1661a5SPawel Jakub Dawidek */ 21062d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 21072d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 21082d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 21092d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 21102d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 21112d1661a5SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 21122d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 21132d1661a5SPawel Jakub Dawidek } else { 21142d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 21152d1661a5SPawel Jakub Dawidek } 21162d1661a5SPawel Jakub Dawidek } else /* if (sc->sc_syncid < disk->d_sync.ds_syncid) */ { 21172d1661a5SPawel Jakub Dawidek /* 21182d1661a5SPawel Jakub Dawidek * Not good, NOT GOOD! 21192d1661a5SPawel Jakub Dawidek * It means that device was started on stale disks 21202d1661a5SPawel Jakub Dawidek * and more fresh disk just arrive. 21212d1661a5SPawel Jakub Dawidek * If there were writes, device is fucked up, sorry. 21222d1661a5SPawel Jakub Dawidek * I think the best choice here is don't touch 21232d1661a5SPawel Jakub Dawidek * this disk and inform the user laudly. 21242d1661a5SPawel Jakub Dawidek */ 21252d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s was started before the freshest " 21262d1661a5SPawel Jakub Dawidek "disk (%s) arrives!! It will not be connected to the " 21272d1661a5SPawel Jakub Dawidek "running device.", sc->sc_name, 21282d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 21292d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 21302d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_NONE; 21312d1661a5SPawel Jakub Dawidek /* Return immediately, because disk was destroyed. */ 21322d1661a5SPawel Jakub Dawidek return (state); 21332d1661a5SPawel Jakub Dawidek } 21342d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "State for %s disk: %s.", 21352d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(state)); 21362d1661a5SPawel Jakub Dawidek return (state); 21372d1661a5SPawel Jakub Dawidek } 21382d1661a5SPawel Jakub Dawidek 21392d1661a5SPawel Jakub Dawidek /* 21402d1661a5SPawel Jakub Dawidek * Update device state. 21412d1661a5SPawel Jakub Dawidek */ 21422d1661a5SPawel Jakub Dawidek static void 2143d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(struct g_raid3_softc *sc, boolean_t force) 21442d1661a5SPawel Jakub Dawidek { 21452d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 21462d1661a5SPawel Jakub Dawidek u_int state; 21472d1661a5SPawel Jakub Dawidek 21482d1661a5SPawel Jakub Dawidek g_topology_assert(); 21492d1661a5SPawel Jakub Dawidek 21502d1661a5SPawel Jakub Dawidek switch (sc->sc_state) { 21512d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_STARTING: 21522d1661a5SPawel Jakub Dawidek { 2153a245a548SPawel Jakub Dawidek u_int n, ndirty, ndisks, genid, syncid; 21542d1661a5SPawel Jakub Dawidek 21552d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider == NULL, 21562d1661a5SPawel Jakub Dawidek ("Non-NULL provider in STARTING state (%s).", sc->sc_name)); 21572d1661a5SPawel Jakub Dawidek /* 21582d1661a5SPawel Jakub Dawidek * Are we ready? We are, if all disks are connected or 21592d1661a5SPawel Jakub Dawidek * one disk is missing and 'force' is true. 21602d1661a5SPawel Jakub Dawidek */ 21612d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, -1) + force == sc->sc_ndisks) { 21622d1661a5SPawel Jakub Dawidek if (!force) 21632d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 21642d1661a5SPawel Jakub Dawidek } else { 21652d1661a5SPawel Jakub Dawidek if (force) { 21662d1661a5SPawel Jakub Dawidek /* 21672d1661a5SPawel Jakub Dawidek * Timeout expired, so destroy device. 21682d1661a5SPawel Jakub Dawidek */ 21692d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 21704ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", 21714ed854e8SPawel Jakub Dawidek __LINE__, sc->sc_rootmount); 21724ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 21734ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 21742d1661a5SPawel Jakub Dawidek } 21752d1661a5SPawel Jakub Dawidek return; 21762d1661a5SPawel Jakub Dawidek } 21772d1661a5SPawel Jakub Dawidek 21782d1661a5SPawel Jakub Dawidek /* 2179a245a548SPawel Jakub Dawidek * Find the biggest genid. 2180a245a548SPawel Jakub Dawidek */ 2181a245a548SPawel Jakub Dawidek genid = 0; 2182a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2183a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2184a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2185a245a548SPawel Jakub Dawidek continue; 2186a245a548SPawel Jakub Dawidek if (disk->d_genid > genid) 2187a245a548SPawel Jakub Dawidek genid = disk->d_genid; 2188a245a548SPawel Jakub Dawidek } 2189a245a548SPawel Jakub Dawidek sc->sc_genid = genid; 2190a245a548SPawel Jakub Dawidek /* 2191a245a548SPawel Jakub Dawidek * Remove all disks without the biggest genid. 2192a245a548SPawel Jakub Dawidek */ 2193a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2194a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2195a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2196a245a548SPawel Jakub Dawidek continue; 2197a245a548SPawel Jakub Dawidek if (disk->d_genid < genid) { 2198a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2199a245a548SPawel Jakub Dawidek "Component %s (device %s) broken, skipping.", 2200a245a548SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 2201a245a548SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 2202a245a548SPawel Jakub Dawidek } 2203a245a548SPawel Jakub Dawidek } 2204a245a548SPawel Jakub Dawidek 2205a245a548SPawel Jakub Dawidek /* 22062d1661a5SPawel Jakub Dawidek * There must be at least 'sc->sc_ndisks - 1' components 22072d1661a5SPawel Jakub Dawidek * with the same syncid and without SYNCHRONIZING flag. 22082d1661a5SPawel Jakub Dawidek */ 22092d1661a5SPawel Jakub Dawidek 22102d1661a5SPawel Jakub Dawidek /* 22112d1661a5SPawel Jakub Dawidek * Find the biggest syncid, number of valid components and 22122d1661a5SPawel Jakub Dawidek * number of dirty components. 22132d1661a5SPawel Jakub Dawidek */ 22142d1661a5SPawel Jakub Dawidek ndirty = ndisks = syncid = 0; 22152d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 22162d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 22172d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 22182d1661a5SPawel Jakub Dawidek continue; 22192d1661a5SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) 22202d1661a5SPawel Jakub Dawidek ndirty++; 22212d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_syncid > syncid) { 22222d1661a5SPawel Jakub Dawidek syncid = disk->d_sync.ds_syncid; 22232d1661a5SPawel Jakub Dawidek ndisks = 0; 22242d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < syncid) { 22252d1661a5SPawel Jakub Dawidek continue; 22262d1661a5SPawel Jakub Dawidek } 22272d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 22282d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) != 0) { 22292d1661a5SPawel Jakub Dawidek continue; 22302d1661a5SPawel Jakub Dawidek } 22312d1661a5SPawel Jakub Dawidek ndisks++; 22322d1661a5SPawel Jakub Dawidek } 22332d1661a5SPawel Jakub Dawidek /* 22342d1661a5SPawel Jakub Dawidek * Do we have enough valid components? 22352d1661a5SPawel Jakub Dawidek */ 22362d1661a5SPawel Jakub Dawidek if (ndisks + 1 < sc->sc_ndisks) { 22372d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 22382d1661a5SPawel Jakub Dawidek "Device %s is broken, too few valid components.", 22392d1661a5SPawel Jakub Dawidek sc->sc_name); 22402d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 22412d1661a5SPawel Jakub Dawidek return; 22422d1661a5SPawel Jakub Dawidek } 22432d1661a5SPawel Jakub Dawidek /* 22442d1661a5SPawel Jakub Dawidek * If there is one DIRTY component and all disks are present, 22452d1661a5SPawel Jakub Dawidek * mark it for synchronization. If there is more than one DIRTY 22462d1661a5SPawel Jakub Dawidek * component, mark parity component for synchronization. 22472d1661a5SPawel Jakub Dawidek */ 22482d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks && ndirty == 1) { 22492d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 22502d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 22512d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 22522d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_DIRTY) == 0) { 22532d1661a5SPawel Jakub Dawidek continue; 22542d1661a5SPawel Jakub Dawidek } 22552d1661a5SPawel Jakub Dawidek disk->d_flags |= 22562d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING; 22572d1661a5SPawel Jakub Dawidek } 22582d1661a5SPawel Jakub Dawidek } else if (ndisks == sc->sc_ndisks && ndirty > 1) { 22592d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 22602d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 22612d1661a5SPawel Jakub Dawidek } 22622d1661a5SPawel Jakub Dawidek 22632d1661a5SPawel Jakub Dawidek sc->sc_syncid = syncid; 22642d1661a5SPawel Jakub Dawidek if (force) { 22652d1661a5SPawel Jakub Dawidek /* Remember to bump syncid on first write. */ 2266ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 22672d1661a5SPawel Jakub Dawidek } 22682d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks) 22692d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 22702d1661a5SPawel Jakub Dawidek else /* if (ndisks == sc->sc_ndisks - 1) */ 22712d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 22722d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s state changed from %s to %s.", 22732d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 22742d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 22752d1661a5SPawel Jakub Dawidek sc->sc_state = state; 22762d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 22772d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 22782d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 22792d1661a5SPawel Jakub Dawidek continue; 22802d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 22812d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, state, G_RAID3_EVENT_DONTWAIT); 2282a245a548SPawel Jakub Dawidek if (state == G_RAID3_DISK_STATE_STALE) 2283ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 22842d1661a5SPawel Jakub Dawidek } 22852d1661a5SPawel Jakub Dawidek break; 22862d1661a5SPawel Jakub Dawidek } 22872d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_DEGRADED: 22882d1661a5SPawel Jakub Dawidek /* 2289ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 22902d1661a5SPawel Jakub Dawidek */ 2291ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2292a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2293a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2294a245a548SPawel Jakub Dawidek } 2295a245a548SPawel Jakub Dawidek 22962d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 22972d1661a5SPawel Jakub Dawidek return; 22982d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < 22992d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 23002d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 23012d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 23022d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 23032d1661a5SPawel Jakub Dawidek return; 23042d1661a5SPawel Jakub Dawidek } 23052d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 23062d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 23072d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 23082d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 23092d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 23102d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 23112d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 23122d1661a5SPawel Jakub Dawidek sc->sc_state = state; 23132d1661a5SPawel Jakub Dawidek } 23142d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 23152d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 23164ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 23174ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 23184ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 23194ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 23204ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 23214ed854e8SPawel Jakub Dawidek } 23222d1661a5SPawel Jakub Dawidek break; 23232d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_COMPLETE: 23242d1661a5SPawel Jakub Dawidek /* 2325ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 23262d1661a5SPawel Jakub Dawidek */ 2327ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2328a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2329a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2330a245a548SPawel Jakub Dawidek } 2331a245a548SPawel Jakub Dawidek 23322d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 23332d1661a5SPawel Jakub Dawidek return; 23342d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) >= 23352d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1, 23362d1661a5SPawel Jakub Dawidek ("Too few ACTIVE components in COMPLETE state (device %s).", 23372d1661a5SPawel Jakub Dawidek sc->sc_name)); 23382d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 23392d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 23402d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 23412d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 23422d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 23432d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 23442d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 23452d1661a5SPawel Jakub Dawidek sc->sc_state = state; 23462d1661a5SPawel Jakub Dawidek } 23472d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 23482d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 23494ed854e8SPawel Jakub Dawidek if (sc->sc_rootmount != NULL) { 23504ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_rel[%u] %p", __LINE__, 23514ed854e8SPawel Jakub Dawidek sc->sc_rootmount); 23524ed854e8SPawel Jakub Dawidek root_mount_rel(sc->sc_rootmount); 23534ed854e8SPawel Jakub Dawidek sc->sc_rootmount = NULL; 23544ed854e8SPawel Jakub Dawidek } 23552d1661a5SPawel Jakub Dawidek break; 23562d1661a5SPawel Jakub Dawidek default: 23572d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s).", sc->sc_name, 23582d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state))); 23592d1661a5SPawel Jakub Dawidek break; 23602d1661a5SPawel Jakub Dawidek } 23612d1661a5SPawel Jakub Dawidek } 23622d1661a5SPawel Jakub Dawidek 23632d1661a5SPawel Jakub Dawidek /* 23642d1661a5SPawel Jakub Dawidek * Update disk state and device state if needed. 23652d1661a5SPawel Jakub Dawidek */ 23662d1661a5SPawel Jakub Dawidek #define DISK_STATE_CHANGED() G_RAID3_DEBUG(1, \ 23672d1661a5SPawel Jakub Dawidek "Disk %s state changed from %s to %s (device %s).", \ 23682d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), \ 23692d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state), \ 23702d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state), sc->sc_name) 23712d1661a5SPawel Jakub Dawidek static int 2372d97d5ee9SPawel Jakub Dawidek g_raid3_update_disk(struct g_raid3_disk *disk, u_int state) 23732d1661a5SPawel Jakub Dawidek { 23742d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 23752d1661a5SPawel Jakub Dawidek 23762d1661a5SPawel Jakub Dawidek g_topology_assert(); 23772d1661a5SPawel Jakub Dawidek 23782d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 23792d1661a5SPawel Jakub Dawidek again: 23802d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Changing disk %s state from %s to %s.", 23812d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(disk->d_state), 23822d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state)); 23832d1661a5SPawel Jakub Dawidek switch (state) { 23842d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 23852d1661a5SPawel Jakub Dawidek /* 23862d1661a5SPawel Jakub Dawidek * Possible scenarios: 23872d1661a5SPawel Jakub Dawidek * 1. New disk arrive. 23882d1661a5SPawel Jakub Dawidek */ 23892d1661a5SPawel Jakub Dawidek /* Previous state should be NONE. */ 23902d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NONE, 23912d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 23922d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 23932d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 23942d1661a5SPawel Jakub Dawidek 23952d1661a5SPawel Jakub Dawidek disk->d_state = state; 23962d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s detected.", 23972d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 23982d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) 23992d1661a5SPawel Jakub Dawidek break; 24002d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 24012d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 24022d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 24032d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 24042d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24052d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24062d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 24072d1661a5SPawel Jakub Dawidek if (state != G_RAID3_DISK_STATE_NONE) 24082d1661a5SPawel Jakub Dawidek goto again; 24092d1661a5SPawel Jakub Dawidek break; 24102d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 24112d1661a5SPawel Jakub Dawidek /* 24122d1661a5SPawel Jakub Dawidek * Possible scenarios: 24132d1661a5SPawel Jakub Dawidek * 1. New disk does not need synchronization. 24142d1661a5SPawel Jakub Dawidek * 2. Synchronization process finished successfully. 24152d1661a5SPawel Jakub Dawidek */ 24162d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 24172d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 24182d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 24192d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 24202d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24212d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24222d1661a5SPawel Jakub Dawidek /* Previous state should be NEW or SYNCHRONIZING. */ 24232d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW || 24242d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 24252d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 24262d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24272d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 24282d1661a5SPawel Jakub Dawidek 24292d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NEW) 24302d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 24312d1661a5SPawel Jakub Dawidek else if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 24322d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_SYNCHRONIZING; 24332d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_FORCE_SYNC; 24342d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 0); 24352d1661a5SPawel Jakub Dawidek } 24362d1661a5SPawel Jakub Dawidek disk->d_state = state; 24372d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 24382d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 24392d1661a5SPawel Jakub Dawidek g_raid3_update_access(disk); 24402d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 24412d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s activated.", 24422d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 24432d1661a5SPawel Jakub Dawidek break; 24442d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 24452d1661a5SPawel Jakub Dawidek /* 24462d1661a5SPawel Jakub Dawidek * Possible scenarios: 24472d1661a5SPawel Jakub Dawidek * 1. Stale disk was connected. 24482d1661a5SPawel Jakub Dawidek */ 24492d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 24502d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 24512d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 24522d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24532d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 24542d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 24552d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 24562d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 24572d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24582d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24592d1661a5SPawel Jakub Dawidek /* 24602d1661a5SPawel Jakub Dawidek * STALE state is only possible if device is marked 24612d1661a5SPawel Jakub Dawidek * NOAUTOSYNC. 24622d1661a5SPawel Jakub Dawidek */ 24632d1661a5SPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) != 0, 24642d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 24652d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 24662d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24672d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24682d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 24692d1661a5SPawel Jakub Dawidek 24702d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 24712d1661a5SPawel Jakub Dawidek disk->d_state = state; 24722d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 24732d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s is stale.", 24742d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 24752d1661a5SPawel Jakub Dawidek break; 24762d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 24772d1661a5SPawel Jakub Dawidek /* 24782d1661a5SPawel Jakub Dawidek * Possible scenarios: 24792d1661a5SPawel Jakub Dawidek * 1. Disk which needs synchronization was connected. 24802d1661a5SPawel Jakub Dawidek */ 24812d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 24822d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 24832d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 24842d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24852d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 24862d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 24872d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 24882d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 24892d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24902d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24912d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 24922d1661a5SPawel Jakub Dawidek 24932d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NEW) 24942d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 24952d1661a5SPawel Jakub Dawidek disk->d_state = state; 24962d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) { 24972d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 24982d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 24992d1661a5SPawel Jakub Dawidek } 25002d1661a5SPawel Jakub Dawidek break; 25012d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_DISCONNECTED: 25022d1661a5SPawel Jakub Dawidek /* 25032d1661a5SPawel Jakub Dawidek * Possible scenarios: 25042d1661a5SPawel Jakub Dawidek * 1. Device wasn't running yet, but disk disappear. 25052d1661a5SPawel Jakub Dawidek * 2. Disk was active and disapppear. 25062d1661a5SPawel Jakub Dawidek * 3. Disk disappear during synchronization process. 25072d1661a5SPawel Jakub Dawidek */ 25082d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 25092d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 25102d1661a5SPawel Jakub Dawidek /* 25112d1661a5SPawel Jakub Dawidek * Previous state should be ACTIVE, STALE or 25122d1661a5SPawel Jakub Dawidek * SYNCHRONIZING. 25132d1661a5SPawel Jakub Dawidek */ 25142d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 25152d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_STALE || 25162d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 25172d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 25182d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 25192d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 25202d1661a5SPawel Jakub Dawidek } else if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) { 25212d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 25222d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 25232d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 25242d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 25252d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 25262d1661a5SPawel Jakub Dawidek /* 25272d1661a5SPawel Jakub Dawidek * Reset bumping syncid if disk disappeared in STARTING 25282d1661a5SPawel Jakub Dawidek * state. 25292d1661a5SPawel Jakub Dawidek */ 2530ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) 2531a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 25322d1661a5SPawel Jakub Dawidek #ifdef INVARIANTS 25332d1661a5SPawel Jakub Dawidek } else { 25342d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s, %s, %s).", 25352d1661a5SPawel Jakub Dawidek sc->sc_name, 25362d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 25372d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 25382d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 25392d1661a5SPawel Jakub Dawidek #endif 25402d1661a5SPawel Jakub Dawidek } 25412d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 25422d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s disconnected.", 25432d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 25442d1661a5SPawel Jakub Dawidek 25452d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 25462d1661a5SPawel Jakub Dawidek break; 25472d1661a5SPawel Jakub Dawidek default: 25482d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Unknown state (%u).", state)); 25492d1661a5SPawel Jakub Dawidek break; 25502d1661a5SPawel Jakub Dawidek } 25512d1661a5SPawel Jakub Dawidek return (0); 25522d1661a5SPawel Jakub Dawidek } 25532d1661a5SPawel Jakub Dawidek #undef DISK_STATE_CHANGED 25542d1661a5SPawel Jakub Dawidek 2555ea973705SPawel Jakub Dawidek int 25562d1661a5SPawel Jakub Dawidek g_raid3_read_metadata(struct g_consumer *cp, struct g_raid3_metadata *md) 25572d1661a5SPawel Jakub Dawidek { 25582d1661a5SPawel Jakub Dawidek struct g_provider *pp; 25592d1661a5SPawel Jakub Dawidek u_char *buf; 25602d1661a5SPawel Jakub Dawidek int error; 25612d1661a5SPawel Jakub Dawidek 25622d1661a5SPawel Jakub Dawidek g_topology_assert(); 25632d1661a5SPawel Jakub Dawidek 25642d1661a5SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 25652d1661a5SPawel Jakub Dawidek if (error != 0) 25662d1661a5SPawel Jakub Dawidek return (error); 25672d1661a5SPawel Jakub Dawidek pp = cp->provider; 25682d1661a5SPawel Jakub Dawidek g_topology_unlock(); 25692d1661a5SPawel Jakub Dawidek /* Metadata are stored on last sector. */ 25702d1661a5SPawel Jakub Dawidek buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize, 25712d1661a5SPawel Jakub Dawidek &error); 25722d1661a5SPawel Jakub Dawidek g_topology_lock(); 25732d1661a5SPawel Jakub Dawidek g_access(cp, -1, 0, 0); 25742d1661a5SPawel Jakub Dawidek if (error != 0) { 2575a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot read metadata from %s (error=%d).", 2576a245a548SPawel Jakub Dawidek cp->provider->name, error); 2577d97d5ee9SPawel Jakub Dawidek if (buf != NULL) 25782d1661a5SPawel Jakub Dawidek g_free(buf); 25792d1661a5SPawel Jakub Dawidek return (error); 25802d1661a5SPawel Jakub Dawidek } 25812d1661a5SPawel Jakub Dawidek 25822d1661a5SPawel Jakub Dawidek /* Decode metadata. */ 25832d1661a5SPawel Jakub Dawidek error = raid3_metadata_decode(buf, md); 25842d1661a5SPawel Jakub Dawidek g_free(buf); 25852d1661a5SPawel Jakub Dawidek if (strcmp(md->md_magic, G_RAID3_MAGIC) != 0) 25862d1661a5SPawel Jakub Dawidek return (EINVAL); 2587a245a548SPawel Jakub Dawidek if (md->md_version > G_RAID3_VERSION) { 2588a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2589a245a548SPawel Jakub Dawidek "Kernel module is too old to handle metadata from %s.", 2590a245a548SPawel Jakub Dawidek cp->provider->name); 2591a245a548SPawel Jakub Dawidek return (EINVAL); 2592a245a548SPawel Jakub Dawidek } 25932d1661a5SPawel Jakub Dawidek if (error != 0) { 25942d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "MD5 metadata hash mismatch for provider %s.", 25952d1661a5SPawel Jakub Dawidek cp->provider->name); 25962d1661a5SPawel Jakub Dawidek return (error); 25972d1661a5SPawel Jakub Dawidek } 25982d1661a5SPawel Jakub Dawidek 25992d1661a5SPawel Jakub Dawidek return (0); 26002d1661a5SPawel Jakub Dawidek } 26012d1661a5SPawel Jakub Dawidek 26022d1661a5SPawel Jakub Dawidek static int 26032d1661a5SPawel Jakub Dawidek g_raid3_check_metadata(struct g_raid3_softc *sc, struct g_provider *pp, 26042d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 26052d1661a5SPawel Jakub Dawidek { 26062d1661a5SPawel Jakub Dawidek 26072d1661a5SPawel Jakub Dawidek if (md->md_no >= sc->sc_ndisks) { 26082d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Invalid disk %s number (no=%u), skipping.", 26092d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 26102d1661a5SPawel Jakub Dawidek return (EINVAL); 26112d1661a5SPawel Jakub Dawidek } 26122d1661a5SPawel Jakub Dawidek if (sc->sc_disks[md->md_no].d_state != G_RAID3_DISK_STATE_NODISK) { 26132d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (no=%u) already exists, skipping.", 26142d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 26152d1661a5SPawel Jakub Dawidek return (EEXIST); 26162d1661a5SPawel Jakub Dawidek } 26172d1661a5SPawel Jakub Dawidek if (md->md_all != sc->sc_ndisks) { 26182d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26192d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 26202d1661a5SPawel Jakub Dawidek "md_all", pp->name, sc->sc_name); 26212d1661a5SPawel Jakub Dawidek return (EINVAL); 26222d1661a5SPawel Jakub Dawidek } 26232d1661a5SPawel Jakub Dawidek if (md->md_mediasize != sc->sc_mediasize) { 26242d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26252d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 26262d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 26272d1661a5SPawel Jakub Dawidek return (EINVAL); 26282d1661a5SPawel Jakub Dawidek } 26292d1661a5SPawel Jakub Dawidek if ((md->md_mediasize % (sc->sc_ndisks - 1)) != 0) { 26302d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26312d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 26322d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 26332d1661a5SPawel Jakub Dawidek return (EINVAL); 26342d1661a5SPawel Jakub Dawidek } 26352d1661a5SPawel Jakub Dawidek if ((sc->sc_mediasize / (sc->sc_ndisks - 1)) > pp->mediasize) { 26362d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26372d1661a5SPawel Jakub Dawidek "Invalid size of disk %s (device %s), skipping.", pp->name, 26382d1661a5SPawel Jakub Dawidek sc->sc_name); 26392d1661a5SPawel Jakub Dawidek return (EINVAL); 26402d1661a5SPawel Jakub Dawidek } 26412d1661a5SPawel Jakub Dawidek if ((md->md_sectorsize / pp->sectorsize) < sc->sc_ndisks - 1) { 26422d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26432d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 26442d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 26452d1661a5SPawel Jakub Dawidek return (EINVAL); 26462d1661a5SPawel Jakub Dawidek } 26472d1661a5SPawel Jakub Dawidek if (md->md_sectorsize != sc->sc_sectorsize) { 26482d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26492d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 26502d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 26512d1661a5SPawel Jakub Dawidek return (EINVAL); 26522d1661a5SPawel Jakub Dawidek } 26532d1661a5SPawel Jakub Dawidek if ((sc->sc_sectorsize % pp->sectorsize) != 0) { 26542d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26552d1661a5SPawel Jakub Dawidek "Invalid sector size of disk %s (device %s), skipping.", 26562d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 26572d1661a5SPawel Jakub Dawidek return (EINVAL); 26582d1661a5SPawel Jakub Dawidek } 26592d1661a5SPawel Jakub Dawidek if ((md->md_mflags & ~G_RAID3_DEVICE_FLAG_MASK) != 0) { 26602d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26612d1661a5SPawel Jakub Dawidek "Invalid device flags on disk %s (device %s), skipping.", 26622d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 26632d1661a5SPawel Jakub Dawidek return (EINVAL); 26642d1661a5SPawel Jakub Dawidek } 2665dba915cfSPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 2666dba915cfSPawel Jakub Dawidek (md->md_mflags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0) { 2667dba915cfSPawel Jakub Dawidek /* 2668dba915cfSPawel Jakub Dawidek * VERIFY and ROUND-ROBIN options are mutally exclusive. 2669dba915cfSPawel Jakub Dawidek */ 2670dba915cfSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Both VERIFY and ROUND-ROBIN flags exist on " 2671dba915cfSPawel Jakub Dawidek "disk %s (device %s), skipping.", pp->name, sc->sc_name); 2672dba915cfSPawel Jakub Dawidek return (EINVAL); 2673dba915cfSPawel Jakub Dawidek } 26742d1661a5SPawel Jakub Dawidek if ((md->md_dflags & ~G_RAID3_DISK_FLAG_MASK) != 0) { 26752d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26762d1661a5SPawel Jakub Dawidek "Invalid disk flags on disk %s (device %s), skipping.", 26772d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 26782d1661a5SPawel Jakub Dawidek return (EINVAL); 26792d1661a5SPawel Jakub Dawidek } 26802d1661a5SPawel Jakub Dawidek return (0); 26812d1661a5SPawel Jakub Dawidek } 26822d1661a5SPawel Jakub Dawidek 2683ea973705SPawel Jakub Dawidek int 26842d1661a5SPawel Jakub Dawidek g_raid3_add_disk(struct g_raid3_softc *sc, struct g_provider *pp, 26852d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 26862d1661a5SPawel Jakub Dawidek { 26872d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 26882d1661a5SPawel Jakub Dawidek int error; 26892d1661a5SPawel Jakub Dawidek 26902d1661a5SPawel Jakub Dawidek g_topology_assert(); 26912d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Adding disk %s.", pp->name); 26922d1661a5SPawel Jakub Dawidek 26932d1661a5SPawel Jakub Dawidek error = g_raid3_check_metadata(sc, pp, md); 26942d1661a5SPawel Jakub Dawidek if (error != 0) 26952d1661a5SPawel Jakub Dawidek return (error); 2696a245a548SPawel Jakub Dawidek if (sc->sc_state != G_RAID3_DEVICE_STATE_STARTING && 2697a245a548SPawel Jakub Dawidek md->md_genid < sc->sc_genid) { 2698a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Component %s (device %s) broken, skipping.", 2699a245a548SPawel Jakub Dawidek pp->name, sc->sc_name); 2700a245a548SPawel Jakub Dawidek return (EINVAL); 2701a245a548SPawel Jakub Dawidek } 27022d1661a5SPawel Jakub Dawidek disk = g_raid3_init_disk(sc, pp, md, &error); 27032d1661a5SPawel Jakub Dawidek if (disk == NULL) 27042d1661a5SPawel Jakub Dawidek return (error); 27052d1661a5SPawel Jakub Dawidek error = g_raid3_event_send(disk, G_RAID3_DISK_STATE_NEW, 27062d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_WAIT); 2707a245a548SPawel Jakub Dawidek if (error != 0) 27082d1661a5SPawel Jakub Dawidek return (error); 2709a245a548SPawel Jakub Dawidek if (md->md_version < G_RAID3_VERSION) { 2710a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Upgrading metadata on %s (v%d->v%d).", 2711a245a548SPawel Jakub Dawidek pp->name, md->md_version, G_RAID3_VERSION); 2712a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 2713a245a548SPawel Jakub Dawidek } 2714a245a548SPawel Jakub Dawidek return (0); 27152d1661a5SPawel Jakub Dawidek } 27162d1661a5SPawel Jakub Dawidek 27172d1661a5SPawel Jakub Dawidek static int 27182d1661a5SPawel Jakub Dawidek g_raid3_access(struct g_provider *pp, int acr, int acw, int ace) 27192d1661a5SPawel Jakub Dawidek { 27202d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 27212d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 2722d97d5ee9SPawel Jakub Dawidek int dcr, dcw, dce; 27232d1661a5SPawel Jakub Dawidek u_int n; 27242d1661a5SPawel Jakub Dawidek 27252d1661a5SPawel Jakub Dawidek g_topology_assert(); 27262d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access request for %s: r%dw%de%d.", pp->name, acr, 27272d1661a5SPawel Jakub Dawidek acw, ace); 27282d1661a5SPawel Jakub Dawidek 27292d1661a5SPawel Jakub Dawidek dcr = pp->acr + acr; 27302d1661a5SPawel Jakub Dawidek dcw = pp->acw + acw; 27312d1661a5SPawel Jakub Dawidek dce = pp->ace + ace; 27322d1661a5SPawel Jakub Dawidek 27332d1661a5SPawel Jakub Dawidek sc = pp->geom->softc; 27342d1661a5SPawel Jakub Dawidek if (sc == NULL || 2735463674f7SPawel Jakub Dawidek g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < sc->sc_ndisks - 1 || 2736463674f7SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 27372d1661a5SPawel Jakub Dawidek if (acr <= 0 && acw <= 0 && ace <= 0) 27382d1661a5SPawel Jakub Dawidek return (0); 27392d1661a5SPawel Jakub Dawidek else 27402d1661a5SPawel Jakub Dawidek return (ENXIO); 27412d1661a5SPawel Jakub Dawidek } 27422d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 27432d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 27442d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 27452d1661a5SPawel Jakub Dawidek continue; 27462d1661a5SPawel Jakub Dawidek /* 27472d1661a5SPawel Jakub Dawidek * Mark disk as dirty on open and unmark on close. 27482d1661a5SPawel Jakub Dawidek */ 27492d1661a5SPawel Jakub Dawidek if (pp->acw == 0 && dcw > 0) { 2750d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 27512d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 27522d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 27532d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27542d1661a5SPawel Jakub Dawidek } else if (pp->acw > 0 && dcw == 0) { 2755d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 27562d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 27572d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 27582d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27592d1661a5SPawel Jakub Dawidek } 27602d1661a5SPawel Jakub Dawidek } 2761d97d5ee9SPawel Jakub Dawidek return (0); 27622d1661a5SPawel Jakub Dawidek } 27632d1661a5SPawel Jakub Dawidek 27642d1661a5SPawel Jakub Dawidek static struct g_geom * 27652d1661a5SPawel Jakub Dawidek g_raid3_create(struct g_class *mp, const struct g_raid3_metadata *md) 27662d1661a5SPawel Jakub Dawidek { 27672d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 27682d1661a5SPawel Jakub Dawidek struct g_geom *gp; 27692d1661a5SPawel Jakub Dawidek int error, timeout; 27702d1661a5SPawel Jakub Dawidek u_int n; 27712d1661a5SPawel Jakub Dawidek 27722d1661a5SPawel Jakub Dawidek g_topology_assert(); 27732d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Creating device %s (id=%u).", md->md_name, md->md_id); 27742d1661a5SPawel Jakub Dawidek 27752d1661a5SPawel Jakub Dawidek /* One disk is minimum. */ 27762d1661a5SPawel Jakub Dawidek if (md->md_all < 1) 27772d1661a5SPawel Jakub Dawidek return (NULL); 27782d1661a5SPawel Jakub Dawidek /* 27792d1661a5SPawel Jakub Dawidek * Action geom. 27802d1661a5SPawel Jakub Dawidek */ 27812d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s", md->md_name); 27822d1661a5SPawel Jakub Dawidek sc = malloc(sizeof(*sc), M_RAID3, M_WAITOK | M_ZERO); 27832d1661a5SPawel Jakub Dawidek sc->sc_disks = malloc(sizeof(struct g_raid3_disk) * md->md_all, M_RAID3, 27842d1661a5SPawel Jakub Dawidek M_WAITOK | M_ZERO); 27852d1661a5SPawel Jakub Dawidek gp->start = g_raid3_start; 27862d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 27872d1661a5SPawel Jakub Dawidek gp->access = g_raid3_access; 27882d1661a5SPawel Jakub Dawidek gp->dumpconf = g_raid3_dumpconf; 27892d1661a5SPawel Jakub Dawidek 27902d1661a5SPawel Jakub Dawidek sc->sc_id = md->md_id; 27912d1661a5SPawel Jakub Dawidek sc->sc_mediasize = md->md_mediasize; 27922d1661a5SPawel Jakub Dawidek sc->sc_sectorsize = md->md_sectorsize; 27932d1661a5SPawel Jakub Dawidek sc->sc_ndisks = md->md_all; 2794f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 27952d1661a5SPawel Jakub Dawidek sc->sc_flags = md->md_mflags; 2796a245a548SPawel Jakub Dawidek sc->sc_bump_id = 0; 27974d006a98SPawel Jakub Dawidek sc->sc_idle = 0; 2798afd05d74SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2799afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_softc = sc; 2800afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_no = n; 28012d1661a5SPawel Jakub Dawidek sc->sc_disks[n].d_state = G_RAID3_DISK_STATE_NODISK; 2802afd05d74SPawel Jakub Dawidek } 28032d1661a5SPawel Jakub Dawidek bioq_init(&sc->sc_queue); 28042d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_queue_mtx, "graid3:queue", NULL, MTX_DEF); 28052d1661a5SPawel Jakub Dawidek TAILQ_INIT(&sc->sc_events); 28062d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_events_mtx, "graid3:events", NULL, MTX_DEF); 28072d1661a5SPawel Jakub Dawidek callout_init(&sc->sc_callout, CALLOUT_MPSAFE); 28082d1661a5SPawel Jakub Dawidek sc->sc_state = G_RAID3_DEVICE_STATE_STARTING; 28092d1661a5SPawel Jakub Dawidek gp->softc = sc; 28102d1661a5SPawel Jakub Dawidek sc->sc_geom = gp; 28112d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 28122d1661a5SPawel Jakub Dawidek /* 28132d1661a5SPawel Jakub Dawidek * Synchronization geom. 28142d1661a5SPawel Jakub Dawidek */ 28152d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s.sync", md->md_name); 28162d1661a5SPawel Jakub Dawidek gp->softc = sc; 28172d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 28182d1661a5SPawel Jakub Dawidek sc->sc_sync.ds_geom = gp; 28192d1661a5SPawel Jakub Dawidek sc->sc_zone_64k = uma_zcreate("gr3:64k", 65536, NULL, NULL, NULL, NULL, 28202d1661a5SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 28212d1661a5SPawel Jakub Dawidek uma_zone_set_max(sc->sc_zone_64k, g_raid3_n64k); 28222d1661a5SPawel Jakub Dawidek sc->sc_zone_16k = uma_zcreate("gr3:16k", 16384, NULL, NULL, NULL, NULL, 28232d1661a5SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 28242d1661a5SPawel Jakub Dawidek uma_zone_set_max(sc->sc_zone_64k, g_raid3_n16k); 28252d1661a5SPawel Jakub Dawidek sc->sc_zone_4k = uma_zcreate("gr3:4k", 4096, NULL, NULL, NULL, NULL, 28262d1661a5SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 28272d1661a5SPawel Jakub Dawidek uma_zone_set_max(sc->sc_zone_4k, g_raid3_n4k); 28282d1661a5SPawel Jakub Dawidek error = kthread_create(g_raid3_worker, sc, &sc->sc_worker, 0, 0, 28292d1661a5SPawel Jakub Dawidek "g_raid3 %s", md->md_name); 28302d1661a5SPawel Jakub Dawidek if (error != 0) { 28312d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot create kernel thread for %s.", 28322d1661a5SPawel Jakub Dawidek sc->sc_name); 28332d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_64k); 28342d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_16k); 28352d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_4k); 28362d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_sync.ds_geom); 28372d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 28382d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 28392d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_geom); 28402d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 28412d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 28422d1661a5SPawel Jakub Dawidek return (NULL); 28432d1661a5SPawel Jakub Dawidek } 28442d1661a5SPawel Jakub Dawidek 28452d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s created (id=%u).", sc->sc_name, sc->sc_id); 28462d1661a5SPawel Jakub Dawidek 28474ed854e8SPawel Jakub Dawidek sc->sc_rootmount = root_mount_hold("GRAID3"); 28484ed854e8SPawel Jakub Dawidek G_RAID3_DEBUG(1, "root_mount_hold %p", sc->sc_rootmount); 28494ed854e8SPawel Jakub Dawidek 28502d1661a5SPawel Jakub Dawidek /* 28512d1661a5SPawel Jakub Dawidek * Run timeout. 28522d1661a5SPawel Jakub Dawidek */ 28532d1661a5SPawel Jakub Dawidek timeout = atomic_load_acq_int(&g_raid3_timeout); 28542d1661a5SPawel Jakub Dawidek callout_reset(&sc->sc_callout, timeout * hz, g_raid3_go, sc); 28552d1661a5SPawel Jakub Dawidek return (sc->sc_geom); 28562d1661a5SPawel Jakub Dawidek } 28572d1661a5SPawel Jakub Dawidek 28582d1661a5SPawel Jakub Dawidek int 28592d1661a5SPawel Jakub Dawidek g_raid3_destroy(struct g_raid3_softc *sc, boolean_t force) 28602d1661a5SPawel Jakub Dawidek { 28612d1661a5SPawel Jakub Dawidek struct g_provider *pp; 28622d1661a5SPawel Jakub Dawidek 28632d1661a5SPawel Jakub Dawidek g_topology_assert(); 28642d1661a5SPawel Jakub Dawidek 28652d1661a5SPawel Jakub Dawidek if (sc == NULL) 28662d1661a5SPawel Jakub Dawidek return (ENXIO); 28672d1661a5SPawel Jakub Dawidek pp = sc->sc_provider; 28682d1661a5SPawel Jakub Dawidek if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 28692d1661a5SPawel Jakub Dawidek if (force) { 28704485f000SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s is still open, so it " 28712d1661a5SPawel Jakub Dawidek "can't be definitely removed.", pp->name); 28722d1661a5SPawel Jakub Dawidek } else { 28732d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28742d1661a5SPawel Jakub Dawidek "Device %s is still open (r%dw%de%d).", pp->name, 28752d1661a5SPawel Jakub Dawidek pp->acr, pp->acw, pp->ace); 28762d1661a5SPawel Jakub Dawidek return (EBUSY); 28772d1661a5SPawel Jakub Dawidek } 28782d1661a5SPawel Jakub Dawidek } 28792d1661a5SPawel Jakub Dawidek 28802d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 28812d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_WAIT; 28822d1661a5SPawel Jakub Dawidek g_topology_unlock(); 28832d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 28842d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 28852d1661a5SPawel Jakub Dawidek wakeup(sc); 28862d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 28872d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 28882d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, &sc->sc_worker); 28892d1661a5SPawel Jakub Dawidek while (sc->sc_worker != NULL) 28902d1661a5SPawel Jakub Dawidek tsleep(&sc->sc_worker, PRIBIO, "r3:destroy", hz / 5); 28912d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Woken up %p.", __func__, &sc->sc_worker); 28922d1661a5SPawel Jakub Dawidek g_topology_lock(); 28932d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(sc); 28942d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 28952d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 28962d1661a5SPawel Jakub Dawidek return (0); 28972d1661a5SPawel Jakub Dawidek } 28982d1661a5SPawel Jakub Dawidek 28992d1661a5SPawel Jakub Dawidek static void 29002d1661a5SPawel Jakub Dawidek g_raid3_taste_orphan(struct g_consumer *cp) 29012d1661a5SPawel Jakub Dawidek { 29022d1661a5SPawel Jakub Dawidek 29032d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("%s called while tasting %s.", __func__, 29042d1661a5SPawel Jakub Dawidek cp->provider->name)); 29052d1661a5SPawel Jakub Dawidek } 29062d1661a5SPawel Jakub Dawidek 29072d1661a5SPawel Jakub Dawidek static struct g_geom * 29082d1661a5SPawel Jakub Dawidek g_raid3_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) 29092d1661a5SPawel Jakub Dawidek { 29102d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 29112d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 29122d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 29132d1661a5SPawel Jakub Dawidek struct g_geom *gp; 29142d1661a5SPawel Jakub Dawidek int error; 29152d1661a5SPawel Jakub Dawidek 29162d1661a5SPawel Jakub Dawidek g_topology_assert(); 29172d1661a5SPawel Jakub Dawidek g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name); 29182d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Tasting %s.", pp->name); 29192d1661a5SPawel Jakub Dawidek 29202d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "raid3:taste"); 29212d1661a5SPawel Jakub Dawidek /* This orphan function should be never called. */ 29222d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_taste_orphan; 29232d1661a5SPawel Jakub Dawidek cp = g_new_consumer(gp); 29242d1661a5SPawel Jakub Dawidek g_attach(cp, pp); 29252d1661a5SPawel Jakub Dawidek error = g_raid3_read_metadata(cp, &md); 29262d1661a5SPawel Jakub Dawidek g_detach(cp); 29272d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 29282d1661a5SPawel Jakub Dawidek g_destroy_geom(gp); 29292d1661a5SPawel Jakub Dawidek if (error != 0) 29302d1661a5SPawel Jakub Dawidek return (NULL); 29312d1661a5SPawel Jakub Dawidek gp = NULL; 29322d1661a5SPawel Jakub Dawidek 29332d1661a5SPawel Jakub Dawidek if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0) 29342d1661a5SPawel Jakub Dawidek return (NULL); 2935e6890985SPawel Jakub Dawidek if (md.md_provsize != 0 && md.md_provsize != pp->mediasize) 2936e6890985SPawel Jakub Dawidek return (NULL); 29372d1661a5SPawel Jakub Dawidek if (g_raid3_debug >= 2) 29382d1661a5SPawel Jakub Dawidek raid3_metadata_dump(&md); 29392d1661a5SPawel Jakub Dawidek 29402d1661a5SPawel Jakub Dawidek /* 29412d1661a5SPawel Jakub Dawidek * Let's check if device already exists. 29422d1661a5SPawel Jakub Dawidek */ 294345d5e85aSPawel Jakub Dawidek sc = NULL; 29442d1661a5SPawel Jakub Dawidek LIST_FOREACH(gp, &mp->geom, geom) { 29452d1661a5SPawel Jakub Dawidek sc = gp->softc; 29462d1661a5SPawel Jakub Dawidek if (sc == NULL) 29472d1661a5SPawel Jakub Dawidek continue; 29482d1661a5SPawel Jakub Dawidek if (sc->sc_sync.ds_geom == gp) 29492d1661a5SPawel Jakub Dawidek continue; 29502d1661a5SPawel Jakub Dawidek if (strcmp(md.md_name, sc->sc_name) != 0) 29512d1661a5SPawel Jakub Dawidek continue; 29522d1661a5SPawel Jakub Dawidek if (md.md_id != sc->sc_id) { 29532d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s already configured.", 29542d1661a5SPawel Jakub Dawidek sc->sc_name); 29552d1661a5SPawel Jakub Dawidek return (NULL); 29562d1661a5SPawel Jakub Dawidek } 29572d1661a5SPawel Jakub Dawidek break; 29582d1661a5SPawel Jakub Dawidek } 29592d1661a5SPawel Jakub Dawidek if (gp == NULL) { 29602d1661a5SPawel Jakub Dawidek gp = g_raid3_create(mp, &md); 29612d1661a5SPawel Jakub Dawidek if (gp == NULL) { 29622d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot create device %s.", 29632d1661a5SPawel Jakub Dawidek md.md_name); 29642d1661a5SPawel Jakub Dawidek return (NULL); 29652d1661a5SPawel Jakub Dawidek } 29662d1661a5SPawel Jakub Dawidek sc = gp->softc; 29672d1661a5SPawel Jakub Dawidek } 29682d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name); 29692d1661a5SPawel Jakub Dawidek error = g_raid3_add_disk(sc, pp, &md); 29702d1661a5SPawel Jakub Dawidek if (error != 0) { 29712d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot add disk %s to %s (error=%d).", 29722d1661a5SPawel Jakub Dawidek pp->name, gp->name, error); 29732d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NODISK) == 29742d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 29752d1661a5SPawel Jakub Dawidek g_raid3_destroy(sc, 1); 29762d1661a5SPawel Jakub Dawidek } 29772d1661a5SPawel Jakub Dawidek return (NULL); 29782d1661a5SPawel Jakub Dawidek } 29792d1661a5SPawel Jakub Dawidek return (gp); 29802d1661a5SPawel Jakub Dawidek } 29812d1661a5SPawel Jakub Dawidek 29822d1661a5SPawel Jakub Dawidek static int 29832d1661a5SPawel Jakub Dawidek g_raid3_destroy_geom(struct gctl_req *req __unused, struct g_class *mp __unused, 29842d1661a5SPawel Jakub Dawidek struct g_geom *gp) 29852d1661a5SPawel Jakub Dawidek { 29862d1661a5SPawel Jakub Dawidek 29872d1661a5SPawel Jakub Dawidek return (g_raid3_destroy(gp->softc, 0)); 29882d1661a5SPawel Jakub Dawidek } 29892d1661a5SPawel Jakub Dawidek 29902d1661a5SPawel Jakub Dawidek static void 29912d1661a5SPawel Jakub Dawidek g_raid3_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 29922d1661a5SPawel Jakub Dawidek struct g_consumer *cp, struct g_provider *pp) 29932d1661a5SPawel Jakub Dawidek { 29942d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 29952d1661a5SPawel Jakub Dawidek 29962d1661a5SPawel Jakub Dawidek g_topology_assert(); 29972d1661a5SPawel Jakub Dawidek 29982d1661a5SPawel Jakub Dawidek sc = gp->softc; 29992d1661a5SPawel Jakub Dawidek if (sc == NULL) 30002d1661a5SPawel Jakub Dawidek return; 30012d1661a5SPawel Jakub Dawidek /* Skip synchronization geom. */ 30022d1661a5SPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 30032d1661a5SPawel Jakub Dawidek return; 30042d1661a5SPawel Jakub Dawidek if (pp != NULL) { 30052d1661a5SPawel Jakub Dawidek /* Nothing here. */ 30062d1661a5SPawel Jakub Dawidek } else if (cp != NULL) { 30072d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 30082d1661a5SPawel Jakub Dawidek 30092d1661a5SPawel Jakub Dawidek disk = cp->private; 30102d1661a5SPawel Jakub Dawidek if (disk == NULL) 30112d1661a5SPawel Jakub Dawidek return; 30122d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Type>", indent); 30132d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 30142d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "PARITY"); 30152d1661a5SPawel Jakub Dawidek else 30162d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "DATA"); 30172d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Type>\n"); 30182d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Number>%u</Number>\n", indent, 30192d1661a5SPawel Jakub Dawidek (u_int)disk->d_no); 30202d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 30212d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Synchronized>", indent); 30222d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_offset_done == 0) 30232d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "0%%"); 30242d1661a5SPawel Jakub Dawidek else { 30252d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%u%%", 30262d1661a5SPawel Jakub Dawidek (u_int)((disk->d_sync.ds_offset_done * 100) / 3027c0d68b6eSPawel Jakub Dawidek (sc->sc_mediasize / (sc->sc_ndisks - 1)))); 30282d1661a5SPawel Jakub Dawidek } 30292d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Synchronized>\n"); 30302d1661a5SPawel Jakub Dawidek } 30312d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, 30322d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid); 3033a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, disk->d_genid); 30342d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 30352d1661a5SPawel Jakub Dawidek if (disk->d_flags == 0) 30362d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 30372d1661a5SPawel Jakub Dawidek else { 30382d1661a5SPawel Jakub Dawidek int first = 1; 30392d1661a5SPawel Jakub Dawidek 30402d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 30412d1661a5SPawel Jakub Dawidek if ((disk->d_flags & (flag)) != 0) { \ 30422d1661a5SPawel Jakub Dawidek if (!first) \ 30432d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 30442d1661a5SPawel Jakub Dawidek else \ 30452d1661a5SPawel Jakub Dawidek first = 0; \ 30462d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 30472d1661a5SPawel Jakub Dawidek } \ 30482d1661a5SPawel Jakub Dawidek } while (0) 30492d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_DIRTY, "DIRTY"); 30502d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_HARDCODED, "HARDCODED"); 30512d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_SYNCHRONIZING, 30522d1661a5SPawel Jakub Dawidek "SYNCHRONIZING"); 30532d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_FORCE_SYNC, "FORCE_SYNC"); 30542d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 30552d1661a5SPawel Jakub Dawidek } 30562d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 30572d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 30582d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state)); 30592d1661a5SPawel Jakub Dawidek } else { 30602d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id); 30612d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, sc->sc_syncid); 3062a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, sc->sc_genid); 30632d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 30642d1661a5SPawel Jakub Dawidek if (sc->sc_flags == 0) 30652d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 30662d1661a5SPawel Jakub Dawidek else { 30672d1661a5SPawel Jakub Dawidek int first = 1; 30682d1661a5SPawel Jakub Dawidek 30692d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 30702d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & (flag)) != 0) { \ 30712d1661a5SPawel Jakub Dawidek if (!first) \ 30722d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 30732d1661a5SPawel Jakub Dawidek else \ 30742d1661a5SPawel Jakub Dawidek first = 0; \ 30752d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 30762d1661a5SPawel Jakub Dawidek } \ 30772d1661a5SPawel Jakub Dawidek } while (0) 30782d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_NOAUTOSYNC, "NOAUTOSYNC"); 3079f5a2f7feSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_ROUND_ROBIN, 3080f5a2f7feSPawel Jakub Dawidek "ROUND-ROBIN"); 3081dba915cfSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_VERIFY, "VERIFY"); 30822d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 30832d1661a5SPawel Jakub Dawidek } 30842d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 30852d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Components>%u</Components>\n", indent, 30862d1661a5SPawel Jakub Dawidek sc->sc_ndisks); 308728b31df7SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 308828b31df7SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state)); 30892d1661a5SPawel Jakub Dawidek } 30902d1661a5SPawel Jakub Dawidek } 30912d1661a5SPawel Jakub Dawidek 30929da3072cSPawel Jakub Dawidek static void 30939da3072cSPawel Jakub Dawidek g_raid3_shutdown(void *arg, int howto) 30949da3072cSPawel Jakub Dawidek { 30959da3072cSPawel Jakub Dawidek struct g_class *mp; 30969da3072cSPawel Jakub Dawidek struct g_geom *gp, *gp2; 30979da3072cSPawel Jakub Dawidek 30989da3072cSPawel Jakub Dawidek mp = arg; 3099fdc3c6ceSPawel Jakub Dawidek DROP_GIANT(); 31009da3072cSPawel Jakub Dawidek g_topology_lock(); 31019da3072cSPawel Jakub Dawidek LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) { 31029da3072cSPawel Jakub Dawidek if (gp->softc == NULL) 31039da3072cSPawel Jakub Dawidek continue; 31049da3072cSPawel Jakub Dawidek g_raid3_destroy(gp->softc, 1); 31059da3072cSPawel Jakub Dawidek } 31069da3072cSPawel Jakub Dawidek g_topology_unlock(); 3107fdc3c6ceSPawel Jakub Dawidek PICKUP_GIANT(); 31089da3072cSPawel Jakub Dawidek #if 0 31099da3072cSPawel Jakub Dawidek tsleep(&gp, PRIBIO, "r3:shutdown", hz * 20); 31109da3072cSPawel Jakub Dawidek #endif 31119da3072cSPawel Jakub Dawidek } 31129da3072cSPawel Jakub Dawidek 31139da3072cSPawel Jakub Dawidek static void 31149da3072cSPawel Jakub Dawidek g_raid3_init(struct g_class *mp) 31159da3072cSPawel Jakub Dawidek { 31169da3072cSPawel Jakub Dawidek 31179da3072cSPawel Jakub Dawidek g_raid3_ehtag = EVENTHANDLER_REGISTER(shutdown_post_sync, 31189da3072cSPawel Jakub Dawidek g_raid3_shutdown, mp, SHUTDOWN_PRI_FIRST); 31199da3072cSPawel Jakub Dawidek if (g_raid3_ehtag == NULL) 31209da3072cSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Warning! Cannot register shutdown event."); 31219da3072cSPawel Jakub Dawidek } 31229da3072cSPawel Jakub Dawidek 31239da3072cSPawel Jakub Dawidek static void 31249da3072cSPawel Jakub Dawidek g_raid3_fini(struct g_class *mp) 31259da3072cSPawel Jakub Dawidek { 31269da3072cSPawel Jakub Dawidek 31279da3072cSPawel Jakub Dawidek if (g_raid3_ehtag == NULL) 31289da3072cSPawel Jakub Dawidek return; 31299da3072cSPawel Jakub Dawidek EVENTHANDLER_DEREGISTER(shutdown_post_sync, g_raid3_ehtag); 31309da3072cSPawel Jakub Dawidek } 31319da3072cSPawel Jakub Dawidek 31322d1661a5SPawel Jakub Dawidek DECLARE_GEOM_CLASS(g_raid3_class, g_raid3); 3133