12d1661a5SPawel Jakub Dawidek /*- 22d1661a5SPawel Jakub Dawidek * Copyright (c) 2004 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 492d1661a5SPawel Jakub Dawidek 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"); 692d1661a5SPawel Jakub Dawidek static u_int g_raid3_syncs_per_sec = 100; 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 { 4512d1661a5SPawel Jakub Dawidek int error; 4522d1661a5SPawel Jakub Dawidek 4532d1661a5SPawel Jakub Dawidek g_topology_assert(); 4542d1661a5SPawel Jakub Dawidek KASSERT(disk->d_consumer == NULL, 4552d1661a5SPawel Jakub Dawidek ("Disk already connected (device %s).", disk->d_softc->sc_name)); 4562d1661a5SPawel Jakub Dawidek 4572d1661a5SPawel Jakub Dawidek disk->d_consumer = g_new_consumer(disk->d_softc->sc_geom); 4582d1661a5SPawel Jakub Dawidek disk->d_consumer->private = disk; 45979e61493SPawel Jakub Dawidek disk->d_consumer->index = 0; 4602d1661a5SPawel Jakub Dawidek error = g_attach(disk->d_consumer, pp); 4612d1661a5SPawel Jakub Dawidek if (error != 0) 4622d1661a5SPawel Jakub Dawidek return (error); 463d97d5ee9SPawel Jakub Dawidek error = g_access(disk->d_consumer, 1, 1, 1); 464d97d5ee9SPawel Jakub Dawidek if (error != 0) { 465d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot open consumer %s (error=%d).", 466d97d5ee9SPawel Jakub Dawidek pp->name, error); 467d97d5ee9SPawel Jakub Dawidek return (error); 468d97d5ee9SPawel Jakub Dawidek } 4692d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Disk %s connected.", g_raid3_get_diskname(disk)); 4702d1661a5SPawel Jakub Dawidek return (0); 4712d1661a5SPawel Jakub Dawidek } 4722d1661a5SPawel Jakub Dawidek 4732d1661a5SPawel Jakub Dawidek static void 4742d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(struct g_raid3_softc *sc, struct g_consumer *cp) 4752d1661a5SPawel Jakub Dawidek { 4762d1661a5SPawel Jakub Dawidek 4772d1661a5SPawel Jakub Dawidek g_topology_assert(); 4782d1661a5SPawel Jakub Dawidek 4792d1661a5SPawel Jakub Dawidek if (cp == NULL) 4802d1661a5SPawel Jakub Dawidek return; 481d97d5ee9SPawel Jakub Dawidek if (cp->provider != NULL) 4822d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cp); 483d97d5ee9SPawel Jakub Dawidek else 4842d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 4852d1661a5SPawel Jakub Dawidek } 4862d1661a5SPawel Jakub Dawidek 4872d1661a5SPawel Jakub Dawidek /* 4882d1661a5SPawel Jakub Dawidek * Initialize disk. This means allocate memory, create consumer, attach it 4892d1661a5SPawel Jakub Dawidek * to the provider and open access (r1w1e1) to it. 4902d1661a5SPawel Jakub Dawidek */ 4912d1661a5SPawel Jakub Dawidek static struct g_raid3_disk * 4922d1661a5SPawel Jakub Dawidek g_raid3_init_disk(struct g_raid3_softc *sc, struct g_provider *pp, 4932d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md, int *errorp) 4942d1661a5SPawel Jakub Dawidek { 4952d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 4962d1661a5SPawel Jakub Dawidek int error; 4972d1661a5SPawel Jakub Dawidek 4982d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[md->md_no]; 4992d1661a5SPawel Jakub Dawidek error = g_raid3_connect_disk(disk, pp); 5002d1661a5SPawel Jakub Dawidek if (error != 0) 5012d1661a5SPawel Jakub Dawidek goto fail; 5022d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NONE; 5032d1661a5SPawel Jakub Dawidek disk->d_flags = md->md_dflags; 5042d1661a5SPawel Jakub Dawidek if (md->md_provider[0] != '\0') 5052d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_HARDCODED; 5062d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 5072d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = md->md_sync_offset; 5082d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = md->md_sync_offset; 509d2fb9c62SPawel Jakub Dawidek disk->d_sync.ds_resync = -1; 510a245a548SPawel Jakub Dawidek disk->d_genid = md->md_genid; 5112d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = md->md_syncid; 5122d1661a5SPawel Jakub Dawidek if (errorp != NULL) 5132d1661a5SPawel Jakub Dawidek *errorp = 0; 5142d1661a5SPawel Jakub Dawidek return (disk); 5152d1661a5SPawel Jakub Dawidek fail: 5162d1661a5SPawel Jakub Dawidek if (errorp != NULL) 5172d1661a5SPawel Jakub Dawidek *errorp = error; 5182d1661a5SPawel Jakub Dawidek if (disk != NULL) 5192d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, disk->d_consumer); 5202d1661a5SPawel Jakub Dawidek return (NULL); 5212d1661a5SPawel Jakub Dawidek } 5222d1661a5SPawel Jakub Dawidek 5232d1661a5SPawel Jakub Dawidek static void 5242d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(struct g_raid3_disk *disk) 5252d1661a5SPawel Jakub Dawidek { 5262d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 5272d1661a5SPawel Jakub Dawidek 5282d1661a5SPawel Jakub Dawidek g_topology_assert(); 5292d1661a5SPawel Jakub Dawidek 5302d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 5312d1661a5SPawel Jakub Dawidek return; 5322d1661a5SPawel Jakub Dawidek g_raid3_event_cancel(disk); 5332d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 5342d1661a5SPawel Jakub Dawidek switch (disk->d_state) { 5352d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 5362d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 5372d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 5382d1661a5SPawel Jakub Dawidek /* FALLTHROUGH */ 5392d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 5402d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 5412d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 5422d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, disk->d_consumer); 5432d1661a5SPawel Jakub Dawidek disk->d_consumer = NULL; 5442d1661a5SPawel Jakub Dawidek break; 5452d1661a5SPawel Jakub Dawidek default: 5462d1661a5SPawel Jakub Dawidek KASSERT(0 == 1, ("Wrong disk state (%s, %s).", 5472d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 5482d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 5492d1661a5SPawel Jakub Dawidek } 5502d1661a5SPawel Jakub Dawidek disk->d_state = G_RAID3_DISK_STATE_NODISK; 5512d1661a5SPawel Jakub Dawidek } 5522d1661a5SPawel Jakub Dawidek 5532d1661a5SPawel Jakub Dawidek static void 5542d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(struct g_raid3_softc *sc) 5552d1661a5SPawel Jakub Dawidek { 5562d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 5579da3072cSPawel Jakub Dawidek struct g_raid3_disk *disk; 5582d1661a5SPawel Jakub Dawidek struct g_geom *gp; 5592d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 5602d1661a5SPawel Jakub Dawidek u_int n; 5612d1661a5SPawel Jakub Dawidek 5622d1661a5SPawel Jakub Dawidek g_topology_assert(); 5632d1661a5SPawel Jakub Dawidek 5642d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 5652d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 5662d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 5679da3072cSPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 5689da3072cSPawel Jakub Dawidek disk = &sc->sc_disks[n]; 569d97d5ee9SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_NODISK) { 5709da3072cSPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 5719da3072cSPawel Jakub Dawidek g_raid3_update_metadata(disk); 5729da3072cSPawel Jakub Dawidek g_raid3_destroy_disk(disk); 5739da3072cSPawel Jakub Dawidek } 574d97d5ee9SPawel Jakub Dawidek } 5752d1661a5SPawel Jakub Dawidek while ((ep = g_raid3_event_get(sc)) != NULL) { 576d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 5772d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) 5782d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 5792d1661a5SPawel Jakub Dawidek else { 5802d1661a5SPawel Jakub Dawidek ep->e_error = ECANCELED; 5812d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 5822d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, ep); 5832d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 5842d1661a5SPawel Jakub Dawidek wakeup(ep); 5852d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 5862d1661a5SPawel Jakub Dawidek } 5872d1661a5SPawel Jakub Dawidek } 5882d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 5892d1661a5SPawel Jakub Dawidek gp->softc = NULL; 5902d1661a5SPawel Jakub Dawidek cp = LIST_FIRST(&sc->sc_sync.ds_geom->consumer); 5912d1661a5SPawel Jakub Dawidek if (cp != NULL) 5922d1661a5SPawel Jakub Dawidek g_raid3_disconnect_consumer(sc, cp); 5932d1661a5SPawel Jakub Dawidek sc->sc_sync.ds_geom->softc = NULL; 5942d1661a5SPawel Jakub Dawidek g_wither_geom(sc->sc_sync.ds_geom, ENXIO); 5952d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_64k); 5962d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_16k); 5972d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_4k); 5982d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 5992d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 6002d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s destroyed.", gp->name); 6012d1661a5SPawel Jakub Dawidek g_wither_geom(gp, ENXIO); 6022d1661a5SPawel Jakub Dawidek } 6032d1661a5SPawel Jakub Dawidek 6042d1661a5SPawel Jakub Dawidek static void 6052d1661a5SPawel Jakub Dawidek g_raid3_orphan(struct g_consumer *cp) 6062d1661a5SPawel Jakub Dawidek { 6072d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 6082d1661a5SPawel Jakub Dawidek 6092d1661a5SPawel Jakub Dawidek g_topology_assert(); 6102d1661a5SPawel Jakub Dawidek 6112d1661a5SPawel Jakub Dawidek disk = cp->private; 6122d1661a5SPawel Jakub Dawidek if (disk == NULL) 6132d1661a5SPawel Jakub Dawidek return; 614ea973705SPawel Jakub Dawidek disk->d_softc->sc_bump_id = G_RAID3_BUMP_SYNCID; 6152d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_DISCONNECTED, 6162d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 6172d1661a5SPawel Jakub Dawidek } 6182d1661a5SPawel Jakub Dawidek 6192d1661a5SPawel Jakub Dawidek static int 6202d1661a5SPawel Jakub Dawidek g_raid3_write_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 6212d1661a5SPawel Jakub Dawidek { 6222d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 6232d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 6242d1661a5SPawel Jakub Dawidek off_t offset, length; 6252d1661a5SPawel Jakub Dawidek u_char *sector; 626d97d5ee9SPawel Jakub Dawidek int error = 0; 6272d1661a5SPawel Jakub Dawidek 6282d1661a5SPawel Jakub Dawidek g_topology_assert(); 6292d1661a5SPawel Jakub Dawidek 6302d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 6312d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 6322d1661a5SPawel Jakub Dawidek KASSERT(cp != NULL, ("NULL consumer (%s).", sc->sc_name)); 6332d1661a5SPawel Jakub Dawidek KASSERT(cp->provider != NULL, ("NULL provider (%s).", sc->sc_name)); 634d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 635d97d5ee9SPawel Jakub Dawidek ("Consumer %s closed? (r%dw%de%d).", cp->provider->name, cp->acr, 636d97d5ee9SPawel Jakub Dawidek cp->acw, cp->ace)); 6372d1661a5SPawel Jakub Dawidek length = cp->provider->sectorsize; 6382d1661a5SPawel Jakub Dawidek offset = cp->provider->mediasize - length; 6392d1661a5SPawel Jakub Dawidek sector = malloc((size_t)length, M_RAID3, M_WAITOK | M_ZERO); 6402d1661a5SPawel Jakub Dawidek if (md != NULL) 6412d1661a5SPawel Jakub Dawidek raid3_metadata_encode(md, sector); 6422d1661a5SPawel Jakub Dawidek g_topology_unlock(); 6432d1661a5SPawel Jakub Dawidek error = g_write_data(cp, offset, sector, length); 6442d1661a5SPawel Jakub Dawidek g_topology_lock(); 6452d1661a5SPawel Jakub Dawidek free(sector, M_RAID3); 6462d1661a5SPawel Jakub Dawidek if (error != 0) { 647ea973705SPawel Jakub Dawidek disk->d_softc->sc_bump_id = G_RAID3_BUMP_GENID; 6482d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_DISCONNECTED, 6492d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 6502d1661a5SPawel Jakub Dawidek } 6512d1661a5SPawel Jakub Dawidek return (error); 6522d1661a5SPawel Jakub Dawidek } 6532d1661a5SPawel Jakub Dawidek 6542d1661a5SPawel Jakub Dawidek int 6552d1661a5SPawel Jakub Dawidek g_raid3_clear_metadata(struct g_raid3_disk *disk) 6562d1661a5SPawel Jakub Dawidek { 6572d1661a5SPawel Jakub Dawidek int error; 6582d1661a5SPawel Jakub Dawidek 6592d1661a5SPawel Jakub Dawidek g_topology_assert(); 6602d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, NULL); 6612d1661a5SPawel Jakub Dawidek if (error == 0) { 6622d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s cleared.", 6632d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 6642d1661a5SPawel Jakub Dawidek } else { 6652d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 6662d1661a5SPawel Jakub Dawidek "Cannot clear metadata on disk %s (error=%d).", 6672d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 6682d1661a5SPawel Jakub Dawidek } 6692d1661a5SPawel Jakub Dawidek return (error); 6702d1661a5SPawel Jakub Dawidek } 6712d1661a5SPawel Jakub Dawidek 6722d1661a5SPawel Jakub Dawidek void 6732d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(struct g_raid3_disk *disk, struct g_raid3_metadata *md) 6742d1661a5SPawel Jakub Dawidek { 6752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 6762d1661a5SPawel Jakub Dawidek 6772d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 6782d1661a5SPawel Jakub Dawidek strlcpy(md->md_magic, G_RAID3_MAGIC, sizeof(md->md_magic)); 6792d1661a5SPawel Jakub Dawidek md->md_version = G_RAID3_VERSION; 6802d1661a5SPawel Jakub Dawidek strlcpy(md->md_name, sc->sc_name, sizeof(md->md_name)); 6812d1661a5SPawel Jakub Dawidek md->md_id = sc->sc_id; 6822d1661a5SPawel Jakub Dawidek md->md_all = sc->sc_ndisks; 683a245a548SPawel Jakub Dawidek md->md_genid = sc->sc_genid; 6842d1661a5SPawel Jakub Dawidek md->md_mediasize = sc->sc_mediasize; 6852d1661a5SPawel Jakub Dawidek md->md_sectorsize = sc->sc_sectorsize; 6862d1661a5SPawel Jakub Dawidek md->md_mflags = (sc->sc_flags & G_RAID3_DEVICE_FLAG_MASK); 6872d1661a5SPawel Jakub Dawidek md->md_no = disk->d_no; 6882d1661a5SPawel Jakub Dawidek md->md_syncid = disk->d_sync.ds_syncid; 6892d1661a5SPawel Jakub Dawidek md->md_dflags = (disk->d_flags & G_RAID3_DISK_FLAG_MASK); 6902d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) 6912d1661a5SPawel Jakub Dawidek md->md_sync_offset = disk->d_sync.ds_offset_done; 6922d1661a5SPawel Jakub Dawidek else 6932d1661a5SPawel Jakub Dawidek md->md_sync_offset = 0; 6942d1661a5SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_HARDCODED) != 0 && 6952d1661a5SPawel Jakub Dawidek disk->d_consumer != NULL && disk->d_consumer->provider != NULL) { 6962d1661a5SPawel Jakub Dawidek strlcpy(md->md_provider, disk->d_consumer->provider->name, 6972d1661a5SPawel Jakub Dawidek sizeof(md->md_provider)); 6982d1661a5SPawel Jakub Dawidek } else { 6992d1661a5SPawel Jakub Dawidek bzero(md->md_provider, sizeof(md->md_provider)); 7002d1661a5SPawel Jakub Dawidek } 7012d1661a5SPawel Jakub Dawidek } 7022d1661a5SPawel Jakub Dawidek 7032d1661a5SPawel Jakub Dawidek void 7042d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(struct g_raid3_disk *disk) 7052d1661a5SPawel Jakub Dawidek { 7062d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 7072d1661a5SPawel Jakub Dawidek int error; 7082d1661a5SPawel Jakub Dawidek 7092d1661a5SPawel Jakub Dawidek g_topology_assert(); 7102d1661a5SPawel Jakub Dawidek g_raid3_fill_metadata(disk, &md); 7112d1661a5SPawel Jakub Dawidek error = g_raid3_write_metadata(disk, &md); 7122d1661a5SPawel Jakub Dawidek if (error == 0) { 7132d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Metadata on %s updated.", 7142d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 7152d1661a5SPawel Jakub Dawidek } else { 7162d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 7172d1661a5SPawel Jakub Dawidek "Cannot update metadata on disk %s (error=%d).", 7182d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), error); 7192d1661a5SPawel Jakub Dawidek } 7202d1661a5SPawel Jakub Dawidek } 7212d1661a5SPawel Jakub Dawidek 7222d1661a5SPawel Jakub Dawidek static void 723d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(struct g_raid3_softc *sc) 7242d1661a5SPawel Jakub Dawidek { 7252d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 7262d1661a5SPawel Jakub Dawidek u_int n; 7272d1661a5SPawel Jakub Dawidek 7282d1661a5SPawel Jakub Dawidek g_topology_assert(); 7292d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 7302d1661a5SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 7312d1661a5SPawel Jakub Dawidek sc->sc_name)); 7322d1661a5SPawel Jakub Dawidek 7332d1661a5SPawel Jakub Dawidek sc->sc_syncid++; 734a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: syncid bumped to %u.", sc->sc_name, 735a245a548SPawel Jakub Dawidek sc->sc_syncid); 7362d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 7372d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 7382d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 7392d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 7402d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 7412d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 7422d1661a5SPawel Jakub Dawidek } 7432d1661a5SPawel Jakub Dawidek } 7442d1661a5SPawel Jakub Dawidek } 7452d1661a5SPawel Jakub Dawidek 7464d006a98SPawel Jakub Dawidek static void 747a245a548SPawel Jakub Dawidek g_raid3_bump_genid(struct g_raid3_softc *sc) 748a245a548SPawel Jakub Dawidek { 749a245a548SPawel Jakub Dawidek struct g_raid3_disk *disk; 750a245a548SPawel Jakub Dawidek u_int n; 751a245a548SPawel Jakub Dawidek 752a245a548SPawel Jakub Dawidek g_topology_assert(); 753a245a548SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) > 0, 754a245a548SPawel Jakub Dawidek ("%s called with no active disks (device=%s).", __func__, 755a245a548SPawel Jakub Dawidek sc->sc_name)); 756a245a548SPawel Jakub Dawidek 757a245a548SPawel Jakub Dawidek sc->sc_genid++; 758a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s: genid bumped to %u.", sc->sc_name, 759a245a548SPawel Jakub Dawidek sc->sc_genid); 760a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 761a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 762a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 763a245a548SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 764a245a548SPawel Jakub Dawidek disk->d_genid = sc->sc_genid; 765a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 766a245a548SPawel Jakub Dawidek } 767a245a548SPawel Jakub Dawidek } 768a245a548SPawel Jakub Dawidek } 769a245a548SPawel Jakub Dawidek 770a245a548SPawel Jakub Dawidek static void 7714d006a98SPawel Jakub Dawidek g_raid3_idle(struct g_raid3_softc *sc) 7724d006a98SPawel Jakub Dawidek { 7734d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 7744d006a98SPawel Jakub Dawidek u_int i; 7754d006a98SPawel Jakub Dawidek 7764d006a98SPawel Jakub Dawidek if (sc->sc_provider == NULL || sc->sc_provider->acw == 0) 7774d006a98SPawel Jakub Dawidek return; 7784d006a98SPawel Jakub Dawidek sc->sc_idle = 1; 7794d006a98SPawel Jakub Dawidek g_topology_lock(); 7804d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 7814d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 7824d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 7834d006a98SPawel Jakub Dawidek continue; 7844d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 7854d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 7864d006a98SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 7874d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 7884d006a98SPawel Jakub Dawidek } 7894d006a98SPawel Jakub Dawidek g_topology_unlock(); 7904d006a98SPawel Jakub Dawidek } 7914d006a98SPawel Jakub Dawidek 7924d006a98SPawel Jakub Dawidek static void 7934d006a98SPawel Jakub Dawidek g_raid3_unidle(struct g_raid3_softc *sc) 7944d006a98SPawel Jakub Dawidek { 7954d006a98SPawel Jakub Dawidek struct g_raid3_disk *disk; 7964d006a98SPawel Jakub Dawidek u_int i; 7974d006a98SPawel Jakub Dawidek 7984d006a98SPawel Jakub Dawidek sc->sc_idle = 0; 7994d006a98SPawel Jakub Dawidek g_topology_lock(); 8004d006a98SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 8014d006a98SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 8024d006a98SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 8034d006a98SPawel Jakub Dawidek continue; 8044d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 8054d006a98SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 8064d006a98SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 8074d006a98SPawel Jakub Dawidek g_raid3_update_metadata(disk); 8084d006a98SPawel Jakub Dawidek } 8094d006a98SPawel Jakub Dawidek g_topology_unlock(); 8104d006a98SPawel Jakub Dawidek } 8114d006a98SPawel Jakub Dawidek 8122d1661a5SPawel Jakub Dawidek /* 8139bb09163SPawel Jakub Dawidek * Return 1 if we should check if RAID3 device is idling. 8149bb09163SPawel Jakub Dawidek */ 8159bb09163SPawel Jakub Dawidek static int 8169bb09163SPawel Jakub Dawidek g_raid3_check_idle(struct g_raid3_softc *sc) 8179bb09163SPawel Jakub Dawidek { 8189bb09163SPawel Jakub Dawidek struct g_raid3_disk *disk; 8199bb09163SPawel Jakub Dawidek u_int i; 8209bb09163SPawel Jakub Dawidek 8219bb09163SPawel Jakub Dawidek if (sc->sc_idle) 8229bb09163SPawel Jakub Dawidek return (0); 8239bb09163SPawel Jakub Dawidek if (sc->sc_provider != NULL && sc->sc_provider->acw == 0) 8249bb09163SPawel Jakub Dawidek return (0); 8259bb09163SPawel Jakub Dawidek /* 8269bb09163SPawel Jakub Dawidek * Check if there are no in-flight requests. 8279bb09163SPawel Jakub Dawidek */ 8289bb09163SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 8299bb09163SPawel Jakub Dawidek disk = &sc->sc_disks[i]; 8309bb09163SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 8319bb09163SPawel Jakub Dawidek continue; 8329bb09163SPawel Jakub Dawidek if (disk->d_consumer->index > 0) 8339bb09163SPawel Jakub Dawidek return (0); 8349bb09163SPawel Jakub Dawidek } 8359bb09163SPawel Jakub Dawidek return (1); 8369bb09163SPawel Jakub Dawidek } 8379bb09163SPawel Jakub Dawidek 8389bb09163SPawel Jakub Dawidek /* 8392d1661a5SPawel Jakub Dawidek * Treat bio_driver1 field in parent bio as list head and field bio_caller1 8402d1661a5SPawel Jakub Dawidek * in child bio as pointer to the next element on the list. 8412d1661a5SPawel Jakub Dawidek */ 8422d1661a5SPawel Jakub Dawidek #define G_RAID3_HEAD_BIO(pbp) (pbp)->bio_driver1 8432d1661a5SPawel Jakub Dawidek 8442d1661a5SPawel Jakub Dawidek #define G_RAID3_NEXT_BIO(cbp) (cbp)->bio_caller1 8452d1661a5SPawel Jakub Dawidek 8462d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_BIO(pbp, bp) \ 8472d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); (bp) != NULL; \ 8482d1661a5SPawel Jakub Dawidek (bp) = G_RAID3_NEXT_BIO(bp)) 8492d1661a5SPawel Jakub Dawidek 8502d1661a5SPawel Jakub Dawidek #define G_RAID3_FOREACH_SAFE_BIO(pbp, bp, tmpbp) \ 8512d1661a5SPawel Jakub Dawidek for ((bp) = G_RAID3_HEAD_BIO(pbp); \ 8522d1661a5SPawel Jakub Dawidek (bp) != NULL && ((tmpbp) = G_RAID3_NEXT_BIO(bp), 1); \ 8532d1661a5SPawel Jakub Dawidek (bp) = (tmpbp)) 8542d1661a5SPawel Jakub Dawidek 8552d1661a5SPawel Jakub Dawidek static void 8562d1661a5SPawel Jakub Dawidek g_raid3_init_bio(struct bio *pbp) 8572d1661a5SPawel Jakub Dawidek { 8582d1661a5SPawel Jakub Dawidek 8592d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = NULL; 8602d1661a5SPawel Jakub Dawidek } 8612d1661a5SPawel Jakub Dawidek 8622d1661a5SPawel Jakub Dawidek static void 863dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(struct bio *cbp) 864dba915cfSPawel Jakub Dawidek { 865dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 866dba915cfSPawel Jakub Dawidek 867dba915cfSPawel Jakub Dawidek pbp = cbp->bio_parent; 868dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) 869dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 870dba915cfSPawel Jakub Dawidek else { 871dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 872dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) { 873dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 874dba915cfSPawel Jakub Dawidek break; 875dba915cfSPawel Jakub Dawidek } 876dba915cfSPawel Jakub Dawidek } 877dba915cfSPawel Jakub Dawidek } 878dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 879dba915cfSPawel Jakub Dawidek } 880dba915cfSPawel Jakub Dawidek 881dba915cfSPawel Jakub Dawidek static void 882dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(struct bio *sbp, struct bio *dbp) 883dba915cfSPawel Jakub Dawidek { 884dba915cfSPawel Jakub Dawidek struct bio *pbp, *bp; 885dba915cfSPawel Jakub Dawidek 886dba915cfSPawel Jakub Dawidek g_raid3_remove_bio(sbp); 887dba915cfSPawel Jakub Dawidek pbp = dbp->bio_parent; 888dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(sbp) = G_RAID3_NEXT_BIO(dbp); 889dba915cfSPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == dbp) 890dba915cfSPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = sbp; 891dba915cfSPawel Jakub Dawidek else { 892dba915cfSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 893dba915cfSPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == dbp) { 894dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = sbp; 895dba915cfSPawel Jakub Dawidek break; 896dba915cfSPawel Jakub Dawidek } 897dba915cfSPawel Jakub Dawidek } 898dba915cfSPawel Jakub Dawidek } 899dba915cfSPawel Jakub Dawidek G_RAID3_NEXT_BIO(dbp) = NULL; 900dba915cfSPawel Jakub Dawidek } 901dba915cfSPawel Jakub Dawidek 902dba915cfSPawel Jakub Dawidek static void 9032d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(struct g_raid3_softc *sc, struct bio *cbp) 9042d1661a5SPawel Jakub Dawidek { 9052d1661a5SPawel Jakub Dawidek struct bio *bp, *pbp; 9062d1661a5SPawel Jakub Dawidek size_t size; 9072d1661a5SPawel Jakub Dawidek 9082d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 9092d1661a5SPawel Jakub Dawidek pbp->bio_children--; 9102d1661a5SPawel Jakub Dawidek KASSERT(cbp->bio_data != NULL, ("NULL bio_data")); 9112d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 9122d1661a5SPawel Jakub Dawidek if (size > 16384) 9132d1661a5SPawel Jakub Dawidek uma_zfree(sc->sc_zone_64k, cbp->bio_data); 9142d1661a5SPawel Jakub Dawidek else if (size > 4096) 9152d1661a5SPawel Jakub Dawidek uma_zfree(sc->sc_zone_16k, cbp->bio_data); 9162d1661a5SPawel Jakub Dawidek else 9172d1661a5SPawel Jakub Dawidek uma_zfree(sc->sc_zone_4k, cbp->bio_data); 9182d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == cbp) { 9192d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = G_RAID3_NEXT_BIO(cbp); 9202d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 9212d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9222d1661a5SPawel Jakub Dawidek } else { 9232d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 9242d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == cbp) 9252d1661a5SPawel Jakub Dawidek break; 9262d1661a5SPawel Jakub Dawidek } 927dba915cfSPawel Jakub Dawidek if (bp != NULL) { 928dba915cfSPawel Jakub Dawidek KASSERT(G_RAID3_NEXT_BIO(bp) != NULL, 929dba915cfSPawel Jakub Dawidek ("NULL bp->bio_driver1")); 9302d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = G_RAID3_NEXT_BIO(cbp); 9312d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 932dba915cfSPawel Jakub Dawidek } 9332d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9342d1661a5SPawel Jakub Dawidek } 9352d1661a5SPawel Jakub Dawidek } 9362d1661a5SPawel Jakub Dawidek 9372d1661a5SPawel Jakub Dawidek static struct bio * 9382d1661a5SPawel Jakub Dawidek g_raid3_clone_bio(struct g_raid3_softc *sc, struct bio *pbp) 9392d1661a5SPawel Jakub Dawidek { 9402d1661a5SPawel Jakub Dawidek struct bio *bp, *cbp; 9412d1661a5SPawel Jakub Dawidek size_t size; 9422d1661a5SPawel Jakub Dawidek 9432d1661a5SPawel Jakub Dawidek cbp = g_clone_bio(pbp); 9442d1661a5SPawel Jakub Dawidek if (cbp == NULL) 9452d1661a5SPawel Jakub Dawidek return (NULL); 9462d1661a5SPawel Jakub Dawidek size = pbp->bio_length / (sc->sc_ndisks - 1); 9472d1661a5SPawel Jakub Dawidek if (size > 16384) { 9482d1661a5SPawel Jakub Dawidek cbp->bio_data = uma_zalloc(sc->sc_zone_64k, M_NOWAIT); 9492d1661a5SPawel Jakub Dawidek g_raid3_64k_requested++; 9502d1661a5SPawel Jakub Dawidek } else if (size > 4096) { 9512d1661a5SPawel Jakub Dawidek cbp->bio_data = uma_zalloc(sc->sc_zone_16k, M_NOWAIT); 9522d1661a5SPawel Jakub Dawidek g_raid3_16k_requested++; 9532d1661a5SPawel Jakub Dawidek } else { 9542d1661a5SPawel Jakub Dawidek cbp->bio_data = uma_zalloc(sc->sc_zone_4k, M_NOWAIT); 9552d1661a5SPawel Jakub Dawidek g_raid3_4k_requested++; 9562d1661a5SPawel Jakub Dawidek } 9572d1661a5SPawel Jakub Dawidek if (cbp->bio_data == NULL) { 9582d1661a5SPawel Jakub Dawidek if (size > 16384) 9592d1661a5SPawel Jakub Dawidek g_raid3_64k_failed++; 9602d1661a5SPawel Jakub Dawidek if (size > 4096) 9612d1661a5SPawel Jakub Dawidek g_raid3_16k_failed++; 9622d1661a5SPawel Jakub Dawidek else 9632d1661a5SPawel Jakub Dawidek g_raid3_4k_failed++; 9642d1661a5SPawel Jakub Dawidek pbp->bio_children--; 9652d1661a5SPawel Jakub Dawidek g_destroy_bio(cbp); 9662d1661a5SPawel Jakub Dawidek return (NULL); 9672d1661a5SPawel Jakub Dawidek } 9682d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(cbp) = NULL; 9692d1661a5SPawel Jakub Dawidek if (G_RAID3_HEAD_BIO(pbp) == NULL) 9702d1661a5SPawel Jakub Dawidek G_RAID3_HEAD_BIO(pbp) = cbp; 9712d1661a5SPawel Jakub Dawidek else { 9722d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, bp) { 9732d1661a5SPawel Jakub Dawidek if (G_RAID3_NEXT_BIO(bp) == NULL) { 9742d1661a5SPawel Jakub Dawidek G_RAID3_NEXT_BIO(bp) = cbp; 9752d1661a5SPawel Jakub Dawidek break; 9762d1661a5SPawel Jakub Dawidek } 9772d1661a5SPawel Jakub Dawidek } 9782d1661a5SPawel Jakub Dawidek } 9792d1661a5SPawel Jakub Dawidek return (cbp); 9802d1661a5SPawel Jakub Dawidek } 9812d1661a5SPawel Jakub Dawidek 9822d1661a5SPawel Jakub Dawidek static void 9832d1661a5SPawel Jakub Dawidek g_raid3_scatter(struct bio *pbp) 9842d1661a5SPawel Jakub Dawidek { 9852d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 9862d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 9872d1661a5SPawel Jakub Dawidek struct bio *bp, *cbp; 9882d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 9892d1661a5SPawel Jakub Dawidek 9902d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 9912d1661a5SPawel Jakub Dawidek bp = NULL; 9922d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 9932d1661a5SPawel Jakub Dawidek /* 9942d1661a5SPawel Jakub Dawidek * Find bio for which we should calculate data. 9952d1661a5SPawel Jakub Dawidek */ 9962d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 9972d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 9982d1661a5SPawel Jakub Dawidek bp = cbp; 9992d1661a5SPawel Jakub Dawidek break; 10002d1661a5SPawel Jakub Dawidek } 10012d1661a5SPawel Jakub Dawidek } 10022d1661a5SPawel Jakub Dawidek KASSERT(bp != NULL, ("NULL parity bio.")); 10032d1661a5SPawel Jakub Dawidek } 10042d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 10052d1661a5SPawel Jakub Dawidek cadd = padd = 0; 10062d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 10072d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10082d1661a5SPawel Jakub Dawidek if (cbp == bp) 10092d1661a5SPawel Jakub Dawidek continue; 10102d1661a5SPawel Jakub Dawidek bcopy(pbp->bio_data + padd, cbp->bio_data + cadd, atom); 10112d1661a5SPawel Jakub Dawidek padd += atom; 10122d1661a5SPawel Jakub Dawidek } 10132d1661a5SPawel Jakub Dawidek cadd += atom; 10142d1661a5SPawel Jakub Dawidek } 10152d1661a5SPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_NOPARITY) == 0) { 10162d1661a5SPawel Jakub Dawidek struct bio *tmpbp; 10172d1661a5SPawel Jakub Dawidek 10182d1661a5SPawel Jakub Dawidek /* 10192d1661a5SPawel Jakub Dawidek * Calculate parity. 10202d1661a5SPawel Jakub Dawidek */ 10212d1661a5SPawel Jakub Dawidek bzero(bp->bio_data, bp->bio_length); 10222d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_SAFE_BIO(pbp, cbp, tmpbp) { 10232d1661a5SPawel Jakub Dawidek if (cbp == bp) 10242d1661a5SPawel Jakub Dawidek continue; 10252d1661a5SPawel Jakub Dawidek g_raid3_xor(cbp->bio_data, bp->bio_data, bp->bio_data, 10262d1661a5SPawel Jakub Dawidek bp->bio_length); 10272d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_NODISK) != 0) 10282d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 10292d1661a5SPawel Jakub Dawidek } 10302d1661a5SPawel Jakub Dawidek } 10312d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10322d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 10332d1661a5SPawel Jakub Dawidek 10342d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 10352d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 10362d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 10372d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 1038d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 1039d97d5ee9SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 1040d97d5ee9SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 104179e61493SPawel Jakub Dawidek cp->index++; 10422d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 10432d1661a5SPawel Jakub Dawidek } 10442d1661a5SPawel Jakub Dawidek } 10452d1661a5SPawel Jakub Dawidek 10462d1661a5SPawel Jakub Dawidek static void 10472d1661a5SPawel Jakub Dawidek g_raid3_gather(struct bio *pbp) 10482d1661a5SPawel Jakub Dawidek { 10492d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 10502d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1051f5a2f7feSPawel Jakub Dawidek struct bio *xbp, *fbp, *cbp; 10522d1661a5SPawel Jakub Dawidek off_t atom, cadd, padd, left; 10532d1661a5SPawel Jakub Dawidek 10542d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 10552d1661a5SPawel Jakub Dawidek /* 1056f5a2f7feSPawel Jakub Dawidek * Find bio for which we have to calculate data. 10572d1661a5SPawel Jakub Dawidek * While going through this path, check if all requests 10582d1661a5SPawel Jakub Dawidek * succeeded, if not, deny whole request. 1059f5a2f7feSPawel Jakub Dawidek * If we're in COMPLETE mode, we allow one request to fail, 1060f5a2f7feSPawel Jakub Dawidek * so if we find one, we're sending it to the parity consumer. 1061f5a2f7feSPawel Jakub Dawidek * If there are more failed requests, we deny whole request. 10622d1661a5SPawel Jakub Dawidek */ 1063f5a2f7feSPawel Jakub Dawidek xbp = fbp = NULL; 10642d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 10652d1661a5SPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) { 1066f5a2f7feSPawel Jakub Dawidek KASSERT(xbp == NULL, ("More than one parity bio.")); 1067f5a2f7feSPawel Jakub Dawidek xbp = cbp; 10682d1661a5SPawel Jakub Dawidek } 10692d1661a5SPawel Jakub Dawidek if (cbp->bio_error == 0) 10702d1661a5SPawel Jakub Dawidek continue; 10712d1661a5SPawel Jakub Dawidek /* 10722d1661a5SPawel Jakub Dawidek * Found failed request. 10732d1661a5SPawel Jakub Dawidek */ 1074f5a2f7feSPawel Jakub Dawidek G_RAID3_LOGREQ(0, cbp, "Request failed."); 10752d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 10762d1661a5SPawel Jakub Dawidek if (disk != NULL) { 10772d1661a5SPawel Jakub Dawidek /* 1078a245a548SPawel Jakub Dawidek * Actually this is pointless to bump genid, 10792d1661a5SPawel Jakub Dawidek * because whole device is fucked up. 10802d1661a5SPawel Jakub Dawidek */ 1081ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 10822d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 10832d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 10842d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 10852d1661a5SPawel Jakub Dawidek } 1086f5a2f7feSPawel Jakub Dawidek if (fbp == NULL) { 1087f5a2f7feSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_DEGRADED) != 0) { 10882d1661a5SPawel Jakub Dawidek /* 1089f5a2f7feSPawel Jakub Dawidek * We are already in degraded mode, so we can't 1090f5a2f7feSPawel Jakub Dawidek * accept any failures. 10912d1661a5SPawel Jakub Dawidek */ 1092f5a2f7feSPawel Jakub Dawidek if (pbp->bio_error == 0) 1093f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 10942d1661a5SPawel Jakub Dawidek } else { 1095f5a2f7feSPawel Jakub Dawidek fbp = cbp; 10962d1661a5SPawel Jakub Dawidek } 1097f5a2f7feSPawel Jakub Dawidek } else { 10982d1661a5SPawel Jakub Dawidek /* 10992d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 11002d1661a5SPawel Jakub Dawidek */ 11012d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 1102f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11032d1661a5SPawel Jakub Dawidek } 11042d1661a5SPawel Jakub Dawidek } 11052d1661a5SPawel Jakub Dawidek if (pbp->bio_error != 0) 11062d1661a5SPawel Jakub Dawidek goto finish; 1107dba915cfSPawel Jakub Dawidek if (fbp != NULL && (pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1108dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_VERIFY; 1109dba915cfSPawel Jakub Dawidek if (xbp != fbp) 1110dba915cfSPawel Jakub Dawidek g_raid3_replace_bio(xbp, fbp); 1111dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, fbp); 1112dba915cfSPawel Jakub Dawidek } else if (fbp != NULL) { 11132d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 11142d1661a5SPawel Jakub Dawidek 11152d1661a5SPawel Jakub Dawidek /* 11162d1661a5SPawel Jakub Dawidek * One request failed, so send the same request to 11172d1661a5SPawel Jakub Dawidek * the parity consumer. 11182d1661a5SPawel Jakub Dawidek */ 1119f5a2f7feSPawel Jakub Dawidek disk = pbp->bio_driver2; 11202d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 1121f5a2f7feSPawel Jakub Dawidek pbp->bio_error = fbp->bio_error; 11222d1661a5SPawel Jakub Dawidek goto finish; 11232d1661a5SPawel Jakub Dawidek } 11242d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 11252d1661a5SPawel Jakub Dawidek pbp->bio_inbed--; 1126f5a2f7feSPawel Jakub Dawidek fbp->bio_flags &= ~(BIO_DONE | BIO_ERROR); 1127f5a2f7feSPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 1128f5a2f7feSPawel Jakub Dawidek fbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1129f5a2f7feSPawel Jakub Dawidek fbp->bio_error = 0; 1130f5a2f7feSPawel Jakub Dawidek fbp->bio_completed = 0; 1131f5a2f7feSPawel Jakub Dawidek fbp->bio_children = 0; 1132f5a2f7feSPawel Jakub Dawidek fbp->bio_inbed = 0; 11332d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 1134f5a2f7feSPawel Jakub Dawidek fbp->bio_caller2 = disk; 1135f5a2f7feSPawel Jakub Dawidek fbp->bio_to = cp->provider; 1136f5a2f7feSPawel Jakub Dawidek G_RAID3_LOGREQ(3, fbp, "Sending request (recover)."); 1137d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 11382d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 11392d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 114079e61493SPawel Jakub Dawidek cp->index++; 1141f5a2f7feSPawel Jakub Dawidek g_io_request(fbp, cp); 11422d1661a5SPawel Jakub Dawidek return; 11432d1661a5SPawel Jakub Dawidek } 1144f5a2f7feSPawel Jakub Dawidek if (xbp != NULL) { 1145f5a2f7feSPawel Jakub Dawidek /* 1146f5a2f7feSPawel Jakub Dawidek * Calculate parity. 1147f5a2f7feSPawel Jakub Dawidek */ 1148f5a2f7feSPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 1149f5a2f7feSPawel Jakub Dawidek if ((cbp->bio_cflags & G_RAID3_BIO_CFLAG_PARITY) != 0) 1150f5a2f7feSPawel Jakub Dawidek continue; 1151f5a2f7feSPawel Jakub Dawidek g_raid3_xor(cbp->bio_data, xbp->bio_data, xbp->bio_data, 1152f5a2f7feSPawel Jakub Dawidek xbp->bio_length); 1153f5a2f7feSPawel Jakub Dawidek } 1154f5a2f7feSPawel Jakub Dawidek xbp->bio_cflags &= ~G_RAID3_BIO_CFLAG_PARITY; 1155dba915cfSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) { 1156dba915cfSPawel Jakub Dawidek if (!g_raid3_is_zero(xbp)) { 1157dba915cfSPawel Jakub Dawidek g_raid3_parity_mismatch++; 1158dba915cfSPawel Jakub Dawidek pbp->bio_error = EIO; 1159dba915cfSPawel Jakub Dawidek goto finish; 1160dba915cfSPawel Jakub Dawidek } 1161dba915cfSPawel Jakub Dawidek g_raid3_destroy_bio(sc, xbp); 1162dba915cfSPawel Jakub Dawidek } 11632d1661a5SPawel Jakub Dawidek } 11642d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 11652d1661a5SPawel Jakub Dawidek cadd = padd = 0; 11662d1661a5SPawel Jakub Dawidek for (left = pbp->bio_length; left > 0; left -= sc->sc_sectorsize) { 11672d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 11682d1661a5SPawel Jakub Dawidek bcopy(cbp->bio_data + cadd, pbp->bio_data + padd, atom); 11692d1661a5SPawel Jakub Dawidek pbp->bio_completed += atom; 11702d1661a5SPawel Jakub Dawidek padd += atom; 11712d1661a5SPawel Jakub Dawidek } 11722d1661a5SPawel Jakub Dawidek cadd += atom; 11732d1661a5SPawel Jakub Dawidek } 11742d1661a5SPawel Jakub Dawidek finish: 11752d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 11762d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 11774cf67afeSPawel Jakub Dawidek else { 11784cf67afeSPawel Jakub Dawidek if ((pbp->bio_pflags & G_RAID3_BIO_PFLAG_VERIFY) != 0) 11794cf67afeSPawel Jakub Dawidek G_RAID3_LOGREQ(1, pbp, "Verification error."); 11802d1661a5SPawel Jakub Dawidek else 11812d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 11824cf67afeSPawel Jakub Dawidek } 1183dba915cfSPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_MASK; 11842d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 11852d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 11862d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 11872d1661a5SPawel Jakub Dawidek } 11882d1661a5SPawel Jakub Dawidek 11892d1661a5SPawel Jakub Dawidek static void 11902d1661a5SPawel Jakub Dawidek g_raid3_done(struct bio *bp) 11912d1661a5SPawel Jakub Dawidek { 11922d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 11932d1661a5SPawel Jakub Dawidek 11942d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 11952d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_REGULAR; 11962d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Regular request done (error=%d).", bp->bio_error); 11972d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 11982d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 11992d1661a5SPawel Jakub Dawidek wakeup(sc); 12002d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 12012d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 12022d1661a5SPawel Jakub Dawidek } 12032d1661a5SPawel Jakub Dawidek 12042d1661a5SPawel Jakub Dawidek static void 12052d1661a5SPawel Jakub Dawidek g_raid3_regular_request(struct bio *cbp) 12062d1661a5SPawel Jakub Dawidek { 12072d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12082d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 12092d1661a5SPawel Jakub Dawidek struct bio *pbp; 12102d1661a5SPawel Jakub Dawidek 12112d1661a5SPawel Jakub Dawidek g_topology_assert_not(); 12122d1661a5SPawel Jakub Dawidek 121379e61493SPawel Jakub Dawidek cbp->bio_from->index--; 12142d1661a5SPawel Jakub Dawidek pbp = cbp->bio_parent; 12152d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 12162d1661a5SPawel Jakub Dawidek disk = cbp->bio_from->private; 12172d1661a5SPawel Jakub Dawidek if (disk == NULL) { 12182d1661a5SPawel Jakub Dawidek g_topology_lock(); 12192d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, cbp->bio_from); 12202d1661a5SPawel Jakub Dawidek g_topology_unlock(); 12212d1661a5SPawel Jakub Dawidek } 12222d1661a5SPawel Jakub Dawidek 12232d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Request finished."); 12242d1661a5SPawel Jakub Dawidek pbp->bio_inbed++; 12252d1661a5SPawel Jakub Dawidek KASSERT(pbp->bio_inbed <= pbp->bio_children, 12262d1661a5SPawel Jakub Dawidek ("bio_inbed (%u) is bigger than bio_children (%u).", pbp->bio_inbed, 12272d1661a5SPawel Jakub Dawidek pbp->bio_children)); 12282d1661a5SPawel Jakub Dawidek if (pbp->bio_inbed != pbp->bio_children) 12292d1661a5SPawel Jakub Dawidek return; 12302d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 12312d1661a5SPawel Jakub Dawidek case BIO_READ: 12322d1661a5SPawel Jakub Dawidek g_raid3_gather(pbp); 12332d1661a5SPawel Jakub Dawidek break; 12342d1661a5SPawel Jakub Dawidek case BIO_WRITE: 12352d1661a5SPawel Jakub Dawidek case BIO_DELETE: 12362d1661a5SPawel Jakub Dawidek { 12372d1661a5SPawel Jakub Dawidek int error = 0; 12382d1661a5SPawel Jakub Dawidek 12392d1661a5SPawel Jakub Dawidek pbp->bio_completed = pbp->bio_length; 12402d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) { 12412d1661a5SPawel Jakub Dawidek if (cbp->bio_error != 0) { 12422d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 12432d1661a5SPawel Jakub Dawidek if (disk != NULL) { 1244ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 12452d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 12462d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 12472d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 12482d1661a5SPawel Jakub Dawidek } 12492d1661a5SPawel Jakub Dawidek if (error == 0) 12502d1661a5SPawel Jakub Dawidek error = cbp->bio_error; 12512d1661a5SPawel Jakub Dawidek else if (pbp->bio_error == 0) { 12522d1661a5SPawel Jakub Dawidek /* 12532d1661a5SPawel Jakub Dawidek * Next failed request, that's too many. 12542d1661a5SPawel Jakub Dawidek */ 12552d1661a5SPawel Jakub Dawidek pbp->bio_error = error; 12562d1661a5SPawel Jakub Dawidek } 12572d1661a5SPawel Jakub Dawidek } 12582d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 12592d1661a5SPawel Jakub Dawidek } 12602d1661a5SPawel Jakub Dawidek if (pbp->bio_error == 0) 12612d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, pbp, "Request finished."); 12622d1661a5SPawel Jakub Dawidek else 12632d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, pbp, "Request failed."); 12642d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_DEGRADED; 12652d1661a5SPawel Jakub Dawidek pbp->bio_pflags &= ~G_RAID3_BIO_PFLAG_NOPARITY; 12662d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 12672d1661a5SPawel Jakub Dawidek break; 12682d1661a5SPawel Jakub Dawidek } 12692d1661a5SPawel Jakub Dawidek } 12702d1661a5SPawel Jakub Dawidek } 12712d1661a5SPawel Jakub Dawidek 12722d1661a5SPawel Jakub Dawidek static void 12732d1661a5SPawel Jakub Dawidek g_raid3_sync_done(struct bio *bp) 12742d1661a5SPawel Jakub Dawidek { 12752d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12762d1661a5SPawel Jakub Dawidek 12772d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request delivered."); 12782d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 12792d1661a5SPawel Jakub Dawidek bp->bio_cflags |= G_RAID3_BIO_CFLAG_SYNC; 12802d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 12812d1661a5SPawel Jakub Dawidek bioq_insert_head(&sc->sc_queue, bp); 12822d1661a5SPawel Jakub Dawidek wakeup(sc); 12832d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 12842d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 12852d1661a5SPawel Jakub Dawidek } 12862d1661a5SPawel Jakub Dawidek 12872d1661a5SPawel Jakub Dawidek static void 12882d1661a5SPawel Jakub Dawidek g_raid3_start(struct bio *bp) 12892d1661a5SPawel Jakub Dawidek { 12902d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 12912d1661a5SPawel Jakub Dawidek 12922d1661a5SPawel Jakub Dawidek sc = bp->bio_to->geom->softc; 12932d1661a5SPawel Jakub Dawidek /* 12942d1661a5SPawel Jakub Dawidek * If sc == NULL or there are no valid disks, provider's error 12952d1661a5SPawel Jakub Dawidek * should be set and g_raid3_start() should not be called at all. 12962d1661a5SPawel Jakub Dawidek */ 12972d1661a5SPawel Jakub Dawidek KASSERT(sc != NULL && (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 12982d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE), 12992d1661a5SPawel Jakub Dawidek ("Provider's error should be set (error=%d)(device=%s).", 13002d1661a5SPawel Jakub Dawidek bp->bio_to->error, bp->bio_to->name)); 13012d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Request received."); 13022d1661a5SPawel Jakub Dawidek 13032d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 13042d1661a5SPawel Jakub Dawidek case BIO_READ: 13052d1661a5SPawel Jakub Dawidek case BIO_WRITE: 13062d1661a5SPawel Jakub Dawidek case BIO_DELETE: 13072d1661a5SPawel Jakub Dawidek break; 13082d1661a5SPawel Jakub Dawidek case BIO_GETATTR: 13092d1661a5SPawel Jakub Dawidek default: 13102d1661a5SPawel Jakub Dawidek g_io_deliver(bp, EOPNOTSUPP); 13112d1661a5SPawel Jakub Dawidek return; 13122d1661a5SPawel Jakub Dawidek } 13132d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 13142d1661a5SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_queue, bp); 13152d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 13162d1661a5SPawel Jakub Dawidek wakeup(sc); 13172d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 13182d1661a5SPawel Jakub Dawidek } 13192d1661a5SPawel Jakub Dawidek 13202d1661a5SPawel Jakub Dawidek /* 13212d1661a5SPawel Jakub Dawidek * Send one synchronization request. 13222d1661a5SPawel Jakub Dawidek */ 13232d1661a5SPawel Jakub Dawidek static void 13242d1661a5SPawel Jakub Dawidek g_raid3_sync_one(struct g_raid3_softc *sc) 13252d1661a5SPawel Jakub Dawidek { 13262d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 13272d1661a5SPawel Jakub Dawidek struct bio *bp; 13282d1661a5SPawel Jakub Dawidek 13292d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 13302d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s).", sc->sc_name, 13312d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state))); 13322d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 13332d1661a5SPawel Jakub Dawidek KASSERT(disk != NULL, ("No sync disk (%s).", sc->sc_name)); 13342d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 13352d1661a5SPawel Jakub Dawidek ("Disk %s is not marked for synchronization.", 13362d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk))); 13372d1661a5SPawel Jakub Dawidek 13382d1661a5SPawel Jakub Dawidek bp = g_new_bio(); 13392d1661a5SPawel Jakub Dawidek if (bp == NULL) 13402d1661a5SPawel Jakub Dawidek return; 13412d1661a5SPawel Jakub Dawidek bp->bio_parent = NULL; 13422d1661a5SPawel Jakub Dawidek bp->bio_cmd = BIO_READ; 13432d1661a5SPawel Jakub Dawidek bp->bio_offset = disk->d_sync.ds_offset * (sc->sc_ndisks - 1); 1344604fce4fSPawel Jakub Dawidek bp->bio_length = MIN(MAXPHYS, sc->sc_mediasize - bp->bio_offset); 13452d1661a5SPawel Jakub Dawidek bp->bio_cflags = 0; 13462d1661a5SPawel Jakub Dawidek bp->bio_done = g_raid3_sync_done; 13472d1661a5SPawel Jakub Dawidek bp->bio_data = disk->d_sync.ds_data; 13482d1661a5SPawel Jakub Dawidek if (bp->bio_data == NULL) { 13492d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 13502d1661a5SPawel Jakub Dawidek return; 13512d1661a5SPawel Jakub Dawidek } 13522d1661a5SPawel Jakub Dawidek bp->bio_cflags = G_RAID3_BIO_CFLAG_REGSYNC; 13532d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset += bp->bio_length / (sc->sc_ndisks - 1); 13542d1661a5SPawel Jakub Dawidek bp->bio_to = sc->sc_provider; 13552d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Sending synchronization request."); 135679e61493SPawel Jakub Dawidek disk->d_sync.ds_consumer->index++; 13572d1661a5SPawel Jakub Dawidek g_io_request(bp, disk->d_sync.ds_consumer); 13582d1661a5SPawel Jakub Dawidek } 13592d1661a5SPawel Jakub Dawidek 13602d1661a5SPawel Jakub Dawidek static void 13612d1661a5SPawel Jakub Dawidek g_raid3_sync_request(struct bio *bp) 13622d1661a5SPawel Jakub Dawidek { 13632d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 13642d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 13652d1661a5SPawel Jakub Dawidek 136679e61493SPawel Jakub Dawidek bp->bio_from->index--; 13672d1661a5SPawel Jakub Dawidek sc = bp->bio_from->geom->softc; 13682d1661a5SPawel Jakub Dawidek disk = bp->bio_from->private; 13692d1661a5SPawel Jakub Dawidek if (disk == NULL) { 13702d1661a5SPawel Jakub Dawidek g_topology_lock(); 13712d1661a5SPawel Jakub Dawidek g_raid3_kill_consumer(sc, bp->bio_from); 13722d1661a5SPawel Jakub Dawidek g_topology_unlock(); 13732d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 13742d1661a5SPawel Jakub Dawidek return; 13752d1661a5SPawel Jakub Dawidek } 13762d1661a5SPawel Jakub Dawidek 13772d1661a5SPawel Jakub Dawidek /* 13782d1661a5SPawel Jakub Dawidek * Synchronization request. 13792d1661a5SPawel Jakub Dawidek */ 13802d1661a5SPawel Jakub Dawidek switch (bp->bio_cmd) { 13812d1661a5SPawel Jakub Dawidek case BIO_READ: 13822d1661a5SPawel Jakub Dawidek { 13832d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 13842d1661a5SPawel Jakub Dawidek u_char *dst, *src; 13852d1661a5SPawel Jakub Dawidek off_t left; 13862d1661a5SPawel Jakub Dawidek u_int atom; 13872d1661a5SPawel Jakub Dawidek 13882d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 13892d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 13902d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 13912d1661a5SPawel Jakub Dawidek bp->bio_error); 13922d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 13932d1661a5SPawel Jakub Dawidek return; 13942d1661a5SPawel Jakub Dawidek } 13952d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 13962d1661a5SPawel Jakub Dawidek atom = sc->sc_sectorsize / (sc->sc_ndisks - 1); 13972d1661a5SPawel Jakub Dawidek dst = src = bp->bio_data; 13982d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) { 13992d1661a5SPawel Jakub Dawidek u_int n; 14002d1661a5SPawel Jakub Dawidek 14012d1661a5SPawel Jakub Dawidek /* Parity component. */ 14022d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 14032d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 14042d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 14052d1661a5SPawel Jakub Dawidek src += atom; 14062d1661a5SPawel Jakub Dawidek for (n = 1; n < sc->sc_ndisks - 1; n++) { 14072d1661a5SPawel Jakub Dawidek g_raid3_xor(src, dst, dst, atom); 14082d1661a5SPawel Jakub Dawidek src += atom; 14092d1661a5SPawel Jakub Dawidek } 14102d1661a5SPawel Jakub Dawidek dst += atom; 14112d1661a5SPawel Jakub Dawidek } 14122d1661a5SPawel Jakub Dawidek } else { 14132d1661a5SPawel Jakub Dawidek /* Regular component. */ 14142d1661a5SPawel Jakub Dawidek src += atom * disk->d_no; 14152d1661a5SPawel Jakub Dawidek for (left = bp->bio_length; left > 0; 14162d1661a5SPawel Jakub Dawidek left -= sc->sc_sectorsize) { 14172d1661a5SPawel Jakub Dawidek bcopy(src, dst, atom); 14182d1661a5SPawel Jakub Dawidek src += sc->sc_sectorsize; 14192d1661a5SPawel Jakub Dawidek dst += atom; 14202d1661a5SPawel Jakub Dawidek } 14212d1661a5SPawel Jakub Dawidek } 14222d1661a5SPawel Jakub Dawidek bp->bio_offset /= sc->sc_ndisks - 1; 14232d1661a5SPawel Jakub Dawidek bp->bio_length /= sc->sc_ndisks - 1; 14242d1661a5SPawel Jakub Dawidek bp->bio_cmd = BIO_WRITE; 14252d1661a5SPawel Jakub Dawidek bp->bio_cflags = 0; 14262d1661a5SPawel Jakub Dawidek bp->bio_children = bp->bio_inbed = 0; 14272d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 1428d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 14292d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", cp->provider->name, 14302d1661a5SPawel Jakub Dawidek cp->acr, cp->acw, cp->ace)); 143179e61493SPawel Jakub Dawidek cp->index++; 14322d1661a5SPawel Jakub Dawidek g_io_request(bp, cp); 14332d1661a5SPawel Jakub Dawidek return; 14342d1661a5SPawel Jakub Dawidek } 14352d1661a5SPawel Jakub Dawidek case BIO_WRITE: 1436d2fb9c62SPawel Jakub Dawidek { 1437d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 1438d2fb9c62SPawel Jakub Dawidek 14392d1661a5SPawel Jakub Dawidek if (bp->bio_error != 0) { 14402d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(0, bp, 14412d1661a5SPawel Jakub Dawidek "Synchronization request failed (error=%d).", 14422d1661a5SPawel Jakub Dawidek bp->bio_error); 14432d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 1444ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_GENID; 14452d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, 14462d1661a5SPawel Jakub Dawidek G_RAID3_DISK_STATE_DISCONNECTED, 14472d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 14482d1661a5SPawel Jakub Dawidek return; 14492d1661a5SPawel Jakub Dawidek } 14502d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, bp, "Synchronization request finished."); 1451d2fb9c62SPawel Jakub Dawidek sync = &disk->d_sync; 1452d2fb9c62SPawel Jakub Dawidek sync->ds_offset_done = bp->bio_offset + bp->bio_length; 14532d1661a5SPawel Jakub Dawidek g_destroy_bio(bp); 1454d2fb9c62SPawel Jakub Dawidek if (sync->ds_resync != -1) 1455d2fb9c62SPawel Jakub Dawidek return; 1456d2fb9c62SPawel Jakub Dawidek if (sync->ds_offset_done == 1457c0d68b6eSPawel Jakub Dawidek sc->sc_mediasize / (sc->sc_ndisks - 1)) { 14582d1661a5SPawel Jakub Dawidek /* 14592d1661a5SPawel Jakub Dawidek * Disk up-to-date, activate it. 14602d1661a5SPawel Jakub Dawidek */ 14612d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, G_RAID3_DISK_STATE_ACTIVE, 14622d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT); 14632d1661a5SPawel Jakub Dawidek return; 1464604fce4fSPawel Jakub Dawidek } else if (sync->ds_offset_done % (MAXPHYS * 100) == 0) { 14652d1661a5SPawel Jakub Dawidek /* 14662d1661a5SPawel Jakub Dawidek * Update offset_done on every 100 blocks. 14672d1661a5SPawel Jakub Dawidek * XXX: This should be configurable. 14682d1661a5SPawel Jakub Dawidek */ 14692d1661a5SPawel Jakub Dawidek g_topology_lock(); 14702d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 14712d1661a5SPawel Jakub Dawidek g_topology_unlock(); 14722d1661a5SPawel Jakub Dawidek } 14732d1661a5SPawel Jakub Dawidek return; 1474d2fb9c62SPawel Jakub Dawidek } 14752d1661a5SPawel Jakub Dawidek default: 14762d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Invalid command here: %u (device=%s)", 14772d1661a5SPawel Jakub Dawidek bp->bio_cmd, sc->sc_name)); 14782d1661a5SPawel Jakub Dawidek break; 14792d1661a5SPawel Jakub Dawidek } 14802d1661a5SPawel Jakub Dawidek } 14812d1661a5SPawel Jakub Dawidek 14822d1661a5SPawel Jakub Dawidek static int 14832d1661a5SPawel Jakub Dawidek g_raid3_register_request(struct bio *pbp) 14842d1661a5SPawel Jakub Dawidek { 14852d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 14862d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 14872d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 14882d1661a5SPawel Jakub Dawidek struct bio *cbp; 14892d1661a5SPawel Jakub Dawidek off_t offset, length; 1490fa6a7837SDavid E. O'Brien u_int n, ndisks; 1491dba915cfSPawel Jakub Dawidek int round_robin, verify; 14922d1661a5SPawel Jakub Dawidek 1493fa6a7837SDavid E. O'Brien ndisks = 0; 14942d1661a5SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 14952d1661a5SPawel Jakub Dawidek if ((pbp->bio_cflags & G_RAID3_BIO_CFLAG_REGSYNC) != 0 && 14962d1661a5SPawel Jakub Dawidek sc->sc_syncdisk == NULL) { 14972d1661a5SPawel Jakub Dawidek g_io_deliver(pbp, EIO); 14982d1661a5SPawel Jakub Dawidek return (0); 14992d1661a5SPawel Jakub Dawidek } 15002d1661a5SPawel Jakub Dawidek g_raid3_init_bio(pbp); 15012d1661a5SPawel Jakub Dawidek length = pbp->bio_length / (sc->sc_ndisks - 1); 15022d1661a5SPawel Jakub Dawidek offset = pbp->bio_offset / (sc->sc_ndisks - 1); 1503dba915cfSPawel Jakub Dawidek round_robin = verify = 0; 15042d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 15052d1661a5SPawel Jakub Dawidek case BIO_READ: 1506dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 1507dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1508dba915cfSPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_VERIFY; 1509dba915cfSPawel Jakub Dawidek verify = 1; 1510dba915cfSPawel Jakub Dawidek ndisks = sc->sc_ndisks; 1511dba915cfSPawel Jakub Dawidek } else { 1512dba915cfSPawel Jakub Dawidek verify = 0; 15132d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks - 1; 1514dba915cfSPawel Jakub Dawidek } 1515dba915cfSPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0 && 1516dba915cfSPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 1517dba915cfSPawel Jakub Dawidek round_robin = 1; 1518dba915cfSPawel Jakub Dawidek } else { 1519dba915cfSPawel Jakub Dawidek round_robin = 0; 1520dba915cfSPawel Jakub Dawidek } 1521dba915cfSPawel Jakub Dawidek KASSERT(!round_robin || !verify, 1522dba915cfSPawel Jakub Dawidek ("ROUND-ROBIN and VERIFY are mutually exclusive.")); 1523f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = &sc->sc_disks[sc->sc_ndisks - 1]; 15242d1661a5SPawel Jakub Dawidek break; 15252d1661a5SPawel Jakub Dawidek case BIO_WRITE: 15262d1661a5SPawel Jakub Dawidek case BIO_DELETE: 1527d2fb9c62SPawel Jakub Dawidek { 1528d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 1529d2fb9c62SPawel Jakub Dawidek 15304d006a98SPawel Jakub Dawidek if (sc->sc_idle) 15314d006a98SPawel Jakub Dawidek g_raid3_unidle(sc); 15324d006a98SPawel Jakub Dawidek 15332d1661a5SPawel Jakub Dawidek ndisks = sc->sc_ndisks; 1534d2fb9c62SPawel Jakub Dawidek 1535d2fb9c62SPawel Jakub Dawidek if (sc->sc_syncdisk == NULL) 15362d1661a5SPawel Jakub Dawidek break; 1537d2fb9c62SPawel Jakub Dawidek sync = &sc->sc_syncdisk->d_sync; 1538d2fb9c62SPawel Jakub Dawidek if (offset >= sync->ds_offset) 1539d2fb9c62SPawel Jakub Dawidek break; 1540d2fb9c62SPawel Jakub Dawidek if (offset + length <= sync->ds_offset_done) 1541d2fb9c62SPawel Jakub Dawidek break; 1542d2fb9c62SPawel Jakub Dawidek if (offset >= sync->ds_resync && sync->ds_resync != -1) 1543d2fb9c62SPawel Jakub Dawidek break; 1544604fce4fSPawel Jakub Dawidek sync->ds_resync = offset - (offset % MAXPHYS); 1545d2fb9c62SPawel Jakub Dawidek break; 1546d2fb9c62SPawel Jakub Dawidek } 15472d1661a5SPawel Jakub Dawidek } 15482d1661a5SPawel Jakub Dawidek for (n = 0; n < ndisks; n++) { 15492d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 15502d1661a5SPawel Jakub Dawidek cbp = g_raid3_clone_bio(sc, pbp); 15512d1661a5SPawel Jakub Dawidek if (cbp == NULL) { 15522d1661a5SPawel Jakub Dawidek while ((cbp = G_RAID3_HEAD_BIO(pbp)) != NULL) 15532d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 15542d1661a5SPawel Jakub Dawidek return (ENOMEM); 15552d1661a5SPawel Jakub Dawidek } 15562d1661a5SPawel Jakub Dawidek cbp->bio_offset = offset; 15572d1661a5SPawel Jakub Dawidek cbp->bio_length = length; 15582d1661a5SPawel Jakub Dawidek cbp->bio_done = g_raid3_done; 15592d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 15602d1661a5SPawel Jakub Dawidek case BIO_READ: 15612d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) { 15622d1661a5SPawel Jakub Dawidek /* 15632d1661a5SPawel Jakub Dawidek * Replace invalid component with the parity 15642d1661a5SPawel Jakub Dawidek * component. 15652d1661a5SPawel Jakub Dawidek */ 15662d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 15672d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 15682d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 1569f5a2f7feSPawel Jakub Dawidek } else if (round_robin && 1570f5a2f7feSPawel Jakub Dawidek disk->d_no == sc->sc_round_robin) { 1571f5a2f7feSPawel Jakub Dawidek /* 1572f5a2f7feSPawel Jakub Dawidek * In round-robin mode skip one data component 1573f5a2f7feSPawel Jakub Dawidek * and use parity component when reading. 1574f5a2f7feSPawel Jakub Dawidek */ 1575f5a2f7feSPawel Jakub Dawidek pbp->bio_driver2 = disk; 1576f5a2f7feSPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 1577f5a2f7feSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 1578f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin++; 1579f5a2f7feSPawel Jakub Dawidek round_robin = 0; 1580dba915cfSPawel Jakub Dawidek } else if (verify && disk->d_no == sc->sc_ndisks - 1) { 1581dba915cfSPawel Jakub Dawidek cbp->bio_cflags |= G_RAID3_BIO_CFLAG_PARITY; 15822d1661a5SPawel Jakub Dawidek } 15832d1661a5SPawel Jakub Dawidek break; 15842d1661a5SPawel Jakub Dawidek case BIO_WRITE: 15852d1661a5SPawel Jakub Dawidek case BIO_DELETE: 15862d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 15872d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 15882d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 15892d1661a5SPawel Jakub Dawidek /* 15902d1661a5SPawel Jakub Dawidek * Active parity component, mark it as such. 15912d1661a5SPawel Jakub Dawidek */ 15922d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 15932d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_PARITY; 15942d1661a5SPawel Jakub Dawidek } 15952d1661a5SPawel Jakub Dawidek } else { 15962d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= G_RAID3_BIO_PFLAG_DEGRADED; 15972d1661a5SPawel Jakub Dawidek if (n == ndisks - 1) { 15982d1661a5SPawel Jakub Dawidek /* 15992d1661a5SPawel Jakub Dawidek * Parity component is not connected, 16002d1661a5SPawel Jakub Dawidek * so destroy its request. 16012d1661a5SPawel Jakub Dawidek */ 16022d1661a5SPawel Jakub Dawidek pbp->bio_pflags |= 16032d1661a5SPawel Jakub Dawidek G_RAID3_BIO_PFLAG_NOPARITY; 16042d1661a5SPawel Jakub Dawidek g_raid3_destroy_bio(sc, cbp); 16052d1661a5SPawel Jakub Dawidek cbp = NULL; 16062d1661a5SPawel Jakub Dawidek } else { 16072d1661a5SPawel Jakub Dawidek cbp->bio_cflags |= 16082d1661a5SPawel Jakub Dawidek G_RAID3_BIO_CFLAG_NODISK; 16092d1661a5SPawel Jakub Dawidek disk = NULL; 16102d1661a5SPawel Jakub Dawidek } 16112d1661a5SPawel Jakub Dawidek } 16122d1661a5SPawel Jakub Dawidek break; 16132d1661a5SPawel Jakub Dawidek } 16142d1661a5SPawel Jakub Dawidek if (cbp != NULL) 16152d1661a5SPawel Jakub Dawidek cbp->bio_caller2 = disk; 16162d1661a5SPawel Jakub Dawidek } 16172d1661a5SPawel Jakub Dawidek switch (pbp->bio_cmd) { 16182d1661a5SPawel Jakub Dawidek case BIO_READ: 1619f5a2f7feSPawel Jakub Dawidek if (round_robin) { 1620f5a2f7feSPawel Jakub Dawidek /* 1621f5a2f7feSPawel Jakub Dawidek * If we are in round-robin mode and 'round_robin' is 1622f5a2f7feSPawel Jakub Dawidek * still 1, it means, that we skipped parity component 1623f5a2f7feSPawel Jakub Dawidek * for this read and must reset sc_round_robin field. 1624f5a2f7feSPawel Jakub Dawidek */ 1625f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 1626f5a2f7feSPawel Jakub Dawidek } 16272d1661a5SPawel Jakub Dawidek G_RAID3_FOREACH_BIO(pbp, cbp) { 16282d1661a5SPawel Jakub Dawidek disk = cbp->bio_caller2; 16292d1661a5SPawel Jakub Dawidek cp = disk->d_consumer; 16302d1661a5SPawel Jakub Dawidek cbp->bio_to = cp->provider; 16312d1661a5SPawel Jakub Dawidek G_RAID3_LOGREQ(3, cbp, "Sending request."); 1632d97d5ee9SPawel Jakub Dawidek KASSERT(cp->acr == 1 && cp->acw == 1 && cp->ace == 1, 16332d1661a5SPawel Jakub Dawidek ("Consumer %s not opened (r%dw%de%d).", 16342d1661a5SPawel Jakub Dawidek cp->provider->name, cp->acr, cp->acw, cp->ace)); 163579e61493SPawel Jakub Dawidek cp->index++; 16362d1661a5SPawel Jakub Dawidek g_io_request(cbp, cp); 16372d1661a5SPawel Jakub Dawidek } 16382d1661a5SPawel Jakub Dawidek break; 16392d1661a5SPawel Jakub Dawidek case BIO_WRITE: 16402d1661a5SPawel Jakub Dawidek case BIO_DELETE: 16412d1661a5SPawel Jakub Dawidek /* 16422d1661a5SPawel Jakub Dawidek * Bump syncid on first write. 16432d1661a5SPawel Jakub Dawidek */ 1644ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) { 1645a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 16462d1661a5SPawel Jakub Dawidek g_topology_lock(); 1647d97d5ee9SPawel Jakub Dawidek g_raid3_bump_syncid(sc); 16482d1661a5SPawel Jakub Dawidek g_topology_unlock(); 16492d1661a5SPawel Jakub Dawidek } 16502d1661a5SPawel Jakub Dawidek g_raid3_scatter(pbp); 16512d1661a5SPawel Jakub Dawidek break; 16522d1661a5SPawel Jakub Dawidek } 16532d1661a5SPawel Jakub Dawidek return (0); 16542d1661a5SPawel Jakub Dawidek } 16552d1661a5SPawel Jakub Dawidek 16562d1661a5SPawel Jakub Dawidek static int 16572d1661a5SPawel Jakub Dawidek g_raid3_can_destroy(struct g_raid3_softc *sc) 16582d1661a5SPawel Jakub Dawidek { 16592d1661a5SPawel Jakub Dawidek struct g_geom *gp; 16602d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 16612d1661a5SPawel Jakub Dawidek 16622d1661a5SPawel Jakub Dawidek g_topology_assert(); 16632d1661a5SPawel Jakub Dawidek gp = sc->sc_geom; 16642d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 16652d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 16662d1661a5SPawel Jakub Dawidek return (0); 16672d1661a5SPawel Jakub Dawidek } 16682d1661a5SPawel Jakub Dawidek gp = sc->sc_sync.ds_geom; 16692d1661a5SPawel Jakub Dawidek LIST_FOREACH(cp, &gp->consumer, consumer) { 16702d1661a5SPawel Jakub Dawidek if (g_raid3_is_busy(sc, cp)) 16712d1661a5SPawel Jakub Dawidek return (0); 16722d1661a5SPawel Jakub Dawidek } 16732d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "No I/O requests for %s, it can be destroyed.", 16742d1661a5SPawel Jakub Dawidek sc->sc_name); 16752d1661a5SPawel Jakub Dawidek return (1); 16762d1661a5SPawel Jakub Dawidek } 16772d1661a5SPawel Jakub Dawidek 16782d1661a5SPawel Jakub Dawidek static int 16792d1661a5SPawel Jakub Dawidek g_raid3_try_destroy(struct g_raid3_softc *sc) 16802d1661a5SPawel Jakub Dawidek { 16812d1661a5SPawel Jakub Dawidek 16822d1661a5SPawel Jakub Dawidek g_topology_lock(); 16832d1661a5SPawel Jakub Dawidek if (!g_raid3_can_destroy(sc)) { 16842d1661a5SPawel Jakub Dawidek g_topology_unlock(); 16852d1661a5SPawel Jakub Dawidek return (0); 16862d1661a5SPawel Jakub Dawidek } 1687a245a548SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_WAIT) != 0) { 16882d1661a5SPawel Jakub Dawidek g_topology_unlock(); 16892d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 16902d1661a5SPawel Jakub Dawidek &sc->sc_worker); 16912d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_worker); 16922d1661a5SPawel Jakub Dawidek sc->sc_worker = NULL; 16932d1661a5SPawel Jakub Dawidek } else { 16942d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(sc); 16952d1661a5SPawel Jakub Dawidek g_topology_unlock(); 16962d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 16972d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 16982d1661a5SPawel Jakub Dawidek } 16992d1661a5SPawel Jakub Dawidek return (1); 17002d1661a5SPawel Jakub Dawidek } 17012d1661a5SPawel Jakub Dawidek 17022d1661a5SPawel Jakub Dawidek /* 17032d1661a5SPawel Jakub Dawidek * Worker thread. 17042d1661a5SPawel Jakub Dawidek */ 17052d1661a5SPawel Jakub Dawidek static void 17062d1661a5SPawel Jakub Dawidek g_raid3_worker(void *arg) 17072d1661a5SPawel Jakub Dawidek { 17082d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 17092d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 1710d2fb9c62SPawel Jakub Dawidek struct g_raid3_disk_sync *sync; 17112d1661a5SPawel Jakub Dawidek struct g_raid3_event *ep; 17122d1661a5SPawel Jakub Dawidek struct bio *bp; 17132d1661a5SPawel Jakub Dawidek u_int nreqs; 17142d1661a5SPawel Jakub Dawidek 17152d1661a5SPawel Jakub Dawidek sc = arg; 171663710c4dSJohn Baldwin mtx_lock_spin(&sched_lock); 171763710c4dSJohn Baldwin sched_prio(curthread, PRIBIO); 171863710c4dSJohn Baldwin mtx_unlock_spin(&sched_lock); 17192d1661a5SPawel Jakub Dawidek 17202d1661a5SPawel Jakub Dawidek nreqs = 0; 17212d1661a5SPawel Jakub Dawidek for (;;) { 17222d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: Let's see...", __func__); 17232d1661a5SPawel Jakub Dawidek /* 17242d1661a5SPawel Jakub Dawidek * First take a look at events. 17252d1661a5SPawel Jakub Dawidek * This is important to handle events before any I/O requests. 17262d1661a5SPawel Jakub Dawidek */ 17272d1661a5SPawel Jakub Dawidek ep = g_raid3_event_get(sc); 1728d97d5ee9SPawel Jakub Dawidek if (ep != NULL && g_topology_try_lock()) { 1729d97d5ee9SPawel Jakub Dawidek g_raid3_event_remove(sc, ep); 17302d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DEVICE) != 0) { 17312d1661a5SPawel Jakub Dawidek /* Update only device status. */ 17322d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, 17332d1661a5SPawel Jakub Dawidek "Running event for device %s.", 17342d1661a5SPawel Jakub Dawidek sc->sc_name); 17352d1661a5SPawel Jakub Dawidek ep->e_error = 0; 1736d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 1); 17372d1661a5SPawel Jakub Dawidek } else { 17382d1661a5SPawel Jakub Dawidek /* Update disk status. */ 17392d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Running event for disk %s.", 17402d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(ep->e_disk)); 17412d1661a5SPawel Jakub Dawidek ep->e_error = g_raid3_update_disk(ep->e_disk, 1742d97d5ee9SPawel Jakub Dawidek ep->e_state); 17432d1661a5SPawel Jakub Dawidek if (ep->e_error == 0) 1744d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(sc, 0); 17452d1661a5SPawel Jakub Dawidek } 17462d1661a5SPawel Jakub Dawidek g_topology_unlock(); 17472d1661a5SPawel Jakub Dawidek if ((ep->e_flags & G_RAID3_EVENT_DONTWAIT) != 0) { 17482d1661a5SPawel Jakub Dawidek KASSERT(ep->e_error == 0, 17492d1661a5SPawel Jakub Dawidek ("Error cannot be handled.")); 17502d1661a5SPawel Jakub Dawidek g_raid3_event_free(ep); 17512d1661a5SPawel Jakub Dawidek } else { 17522d1661a5SPawel Jakub Dawidek ep->e_flags |= G_RAID3_EVENT_DONE; 17532d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, 17542d1661a5SPawel Jakub Dawidek ep); 17552d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_events_mtx); 17562d1661a5SPawel Jakub Dawidek wakeup(ep); 17572d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_events_mtx); 17582d1661a5SPawel Jakub Dawidek } 17592d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 17602d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 17612d1661a5SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) 17622d1661a5SPawel Jakub Dawidek kthread_exit(0); 17632d1661a5SPawel Jakub Dawidek } 17642d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 1.", __func__); 17652d1661a5SPawel Jakub Dawidek continue; 17662d1661a5SPawel Jakub Dawidek } 17672d1661a5SPawel Jakub Dawidek /* 17682d1661a5SPawel Jakub Dawidek * Now I/O requests. 17692d1661a5SPawel Jakub Dawidek */ 17702d1661a5SPawel Jakub Dawidek /* Get first request from the queue. */ 17712d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 17722d1661a5SPawel Jakub Dawidek bp = bioq_first(&sc->sc_queue); 17732d1661a5SPawel Jakub Dawidek if (bp == NULL) { 1774d97d5ee9SPawel Jakub Dawidek if (ep != NULL) { 1775d97d5ee9SPawel Jakub Dawidek /* 1776d97d5ee9SPawel Jakub Dawidek * No I/O requests and topology lock was 1777d97d5ee9SPawel Jakub Dawidek * already held? Try again. 1778d97d5ee9SPawel Jakub Dawidek */ 1779d97d5ee9SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 17807f456a7dSPawel Jakub Dawidek tsleep(ep, PRIBIO, "r3:top1", hz / 5); 1781d97d5ee9SPawel Jakub Dawidek continue; 1782d97d5ee9SPawel Jakub Dawidek } 17832d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 17842d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 17852d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 17862d1661a5SPawel Jakub Dawidek if (g_raid3_try_destroy(sc)) 17872d1661a5SPawel Jakub Dawidek kthread_exit(0); 17882d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 17892d1661a5SPawel Jakub Dawidek } 17902d1661a5SPawel Jakub Dawidek } 17912d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL && 17922d1661a5SPawel Jakub Dawidek (bp == NULL || nreqs > g_raid3_reqs_per_sync)) { 17932d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 17942d1661a5SPawel Jakub Dawidek /* 17952d1661a5SPawel Jakub Dawidek * It is time for synchronization... 17962d1661a5SPawel Jakub Dawidek */ 17972d1661a5SPawel Jakub Dawidek nreqs = 0; 17982d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 1799d2fb9c62SPawel Jakub Dawidek sync = &disk->d_sync; 1800d2fb9c62SPawel Jakub Dawidek if (sync->ds_offset < 1801c0d68b6eSPawel Jakub Dawidek sc->sc_mediasize / (sc->sc_ndisks - 1) && 1802d2fb9c62SPawel Jakub Dawidek sync->ds_offset == sync->ds_offset_done) { 1803d2fb9c62SPawel Jakub Dawidek if (sync->ds_resync != -1) { 1804d2fb9c62SPawel Jakub Dawidek sync->ds_offset = sync->ds_resync; 1805d2fb9c62SPawel Jakub Dawidek sync->ds_offset_done = sync->ds_resync; 1806d2fb9c62SPawel Jakub Dawidek sync->ds_resync = -1; 1807d2fb9c62SPawel Jakub Dawidek } 18082d1661a5SPawel Jakub Dawidek g_raid3_sync_one(sc); 18092d1661a5SPawel Jakub Dawidek } 18102d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 2.", __func__); 18112d1661a5SPawel Jakub Dawidek goto sleep; 18122d1661a5SPawel Jakub Dawidek } 18132d1661a5SPawel Jakub Dawidek if (bp == NULL) { 18149bb09163SPawel Jakub Dawidek if (g_raid3_check_idle(sc)) { 18154d006a98SPawel Jakub Dawidek u_int idletime; 18164d006a98SPawel Jakub Dawidek 18174d006a98SPawel Jakub Dawidek idletime = g_raid3_idletime; 18184d006a98SPawel Jakub Dawidek if (idletime == 0) 18194d006a98SPawel Jakub Dawidek idletime = 1; 18204d006a98SPawel Jakub Dawidek idletime *= hz; 18214d006a98SPawel Jakub Dawidek if (msleep(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, 18229bb09163SPawel Jakub Dawidek "r3:w1", idletime) == EWOULDBLOCK) { 18239bb09163SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 3.", 18244d006a98SPawel Jakub Dawidek __func__); 18254d006a98SPawel Jakub Dawidek /* 18264d006a98SPawel Jakub Dawidek * No I/O requests in 'idletime' 18274d006a98SPawel Jakub Dawidek * seconds, so mark components as clean. 18284d006a98SPawel Jakub Dawidek */ 18294d006a98SPawel Jakub Dawidek g_raid3_idle(sc); 18304d006a98SPawel Jakub Dawidek } 18319bb09163SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 4.", __func__); 18329bb09163SPawel Jakub Dawidek } else { 18339bb09163SPawel Jakub Dawidek MSLEEP(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, 18349bb09163SPawel Jakub Dawidek "r3:w2", 0); 18354d006a98SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 5.", __func__); 18364d006a98SPawel Jakub Dawidek } 18372d1661a5SPawel Jakub Dawidek continue; 18382d1661a5SPawel Jakub Dawidek } 18392d1661a5SPawel Jakub Dawidek nreqs++; 18402d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 18412d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 18422d1661a5SPawel Jakub Dawidek 18432d1661a5SPawel Jakub Dawidek if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_REGULAR) != 0) { 18442d1661a5SPawel Jakub Dawidek g_raid3_regular_request(bp); 18452d1661a5SPawel Jakub Dawidek } else if ((bp->bio_cflags & G_RAID3_BIO_CFLAG_SYNC) != 0) { 18462d1661a5SPawel Jakub Dawidek u_int timeout, sps; 18472d1661a5SPawel Jakub Dawidek 18482d1661a5SPawel Jakub Dawidek g_raid3_sync_request(bp); 18492d1661a5SPawel Jakub Dawidek sleep: 18502d1661a5SPawel Jakub Dawidek sps = atomic_load_acq_int(&g_raid3_syncs_per_sec); 18512d1661a5SPawel Jakub Dawidek if (sps == 0) { 1852d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 6.", __func__); 1853d97d5ee9SPawel Jakub Dawidek continue; 1854d97d5ee9SPawel Jakub Dawidek } 1855d97d5ee9SPawel Jakub Dawidek if (ep != NULL) { 1856d97d5ee9SPawel Jakub Dawidek /* 1857d97d5ee9SPawel Jakub Dawidek * We have some pending events, don't sleep now. 1858d97d5ee9SPawel Jakub Dawidek */ 1859d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 7.", __func__); 18607f456a7dSPawel Jakub Dawidek tsleep(ep, PRIBIO, "r3:top2", hz / 5); 18612d1661a5SPawel Jakub Dawidek continue; 18622d1661a5SPawel Jakub Dawidek } 18632d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 18642d1661a5SPawel Jakub Dawidek if (bioq_first(&sc->sc_queue) != NULL) { 18652d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 1866d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 8.", __func__); 18672d1661a5SPawel Jakub Dawidek continue; 18682d1661a5SPawel Jakub Dawidek } 18692d1661a5SPawel Jakub Dawidek timeout = hz / sps; 18702d1661a5SPawel Jakub Dawidek if (timeout == 0) 18712d1661a5SPawel Jakub Dawidek timeout = 1; 18722d1661a5SPawel Jakub Dawidek MSLEEP(sc, &sc->sc_queue_mtx, PRIBIO | PDROP, "r3:w2", 18732d1661a5SPawel Jakub Dawidek timeout); 18742d1661a5SPawel Jakub Dawidek } else { 18752d1661a5SPawel Jakub Dawidek if (g_raid3_register_request(bp) != 0) { 18762d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 18772d1661a5SPawel Jakub Dawidek bioq_insert_tail(&sc->sc_queue, bp); 18782d1661a5SPawel Jakub Dawidek MSLEEP(&sc->sc_queue, &sc->sc_queue_mtx, 18792d1661a5SPawel Jakub Dawidek PRIBIO | PDROP, "r3:lowmem", hz / 10); 18802d1661a5SPawel Jakub Dawidek } 18812d1661a5SPawel Jakub Dawidek } 1882d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(5, "%s: I'm here 9.", __func__); 18832d1661a5SPawel Jakub Dawidek } 18842d1661a5SPawel Jakub Dawidek } 18852d1661a5SPawel Jakub Dawidek 18862d1661a5SPawel Jakub Dawidek /* 18872d1661a5SPawel Jakub Dawidek * Open disk's consumer if needed. 18882d1661a5SPawel Jakub Dawidek */ 18892d1661a5SPawel Jakub Dawidek static void 18902d1661a5SPawel Jakub Dawidek g_raid3_update_access(struct g_raid3_disk *disk) 18912d1661a5SPawel Jakub Dawidek { 18922d1661a5SPawel Jakub Dawidek struct g_provider *pp; 18932d1661a5SPawel Jakub Dawidek 18942d1661a5SPawel Jakub Dawidek g_topology_assert(); 18952d1661a5SPawel Jakub Dawidek 18962d1661a5SPawel Jakub Dawidek pp = disk->d_softc->sc_provider; 1897d97d5ee9SPawel Jakub Dawidek if (pp == NULL) 18982d1661a5SPawel Jakub Dawidek return; 1899d97d5ee9SPawel Jakub Dawidek if (pp->acw > 0) { 1900d97d5ee9SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) == 0) { 19012d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 19022d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), disk->d_softc->sc_name); 19032d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 1904d97d5ee9SPawel Jakub Dawidek } 1905d97d5ee9SPawel Jakub Dawidek } else if (pp->acw == 0) { 1906d97d5ee9SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) { 19072d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 19082d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), disk->d_softc->sc_name); 19092d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 19102d1661a5SPawel Jakub Dawidek } 19112d1661a5SPawel Jakub Dawidek } 1912d97d5ee9SPawel Jakub Dawidek } 19132d1661a5SPawel Jakub Dawidek 19142d1661a5SPawel Jakub Dawidek static void 19152d1661a5SPawel Jakub Dawidek g_raid3_sync_start(struct g_raid3_softc *sc) 19162d1661a5SPawel Jakub Dawidek { 19172d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 19182d1661a5SPawel Jakub Dawidek int error; 19192d1661a5SPawel Jakub Dawidek u_int n; 19202d1661a5SPawel Jakub Dawidek 19212d1661a5SPawel Jakub Dawidek g_topology_assert(); 19222d1661a5SPawel Jakub Dawidek 19232d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 19242d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 19252d1661a5SPawel Jakub Dawidek sc->sc_state)); 19262d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_syncdisk == NULL, ("Syncdisk is not NULL (%s, %u).", 19272d1661a5SPawel Jakub Dawidek sc->sc_name, sc->sc_state)); 19282d1661a5SPawel Jakub Dawidek disk = NULL; 19292d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 19302d1661a5SPawel Jakub Dawidek if (sc->sc_disks[n].d_state != G_RAID3_DISK_STATE_SYNCHRONIZING) 19312d1661a5SPawel Jakub Dawidek continue; 19322d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 19332d1661a5SPawel Jakub Dawidek break; 19342d1661a5SPawel Jakub Dawidek } 19352d1661a5SPawel Jakub Dawidek if (disk == NULL) 19362d1661a5SPawel Jakub Dawidek return; 19372d1661a5SPawel Jakub Dawidek 19382d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s.", sc->sc_name, 19392d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 19402d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 19412d1661a5SPawel Jakub Dawidek KASSERT(disk->d_sync.ds_consumer == NULL, 19422d1661a5SPawel Jakub Dawidek ("Sync consumer already exists (device=%s, disk=%s).", 19432d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk))); 19442d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = g_new_consumer(sc->sc_sync.ds_geom); 19452d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer->private = disk; 194679e61493SPawel Jakub Dawidek disk->d_sync.ds_consumer->index = 0; 19472d1661a5SPawel Jakub Dawidek error = g_attach(disk->d_sync.ds_consumer, disk->d_softc->sc_provider); 19482d1661a5SPawel Jakub Dawidek KASSERT(error == 0, ("Cannot attach to %s (error=%d).", 19492d1661a5SPawel Jakub Dawidek disk->d_softc->sc_name, error)); 19502d1661a5SPawel Jakub Dawidek error = g_access(disk->d_sync.ds_consumer, 1, 0, 0); 19512d1661a5SPawel Jakub Dawidek KASSERT(error == 0, ("Cannot open %s (error=%d).", 19522d1661a5SPawel Jakub Dawidek disk->d_softc->sc_name, error)); 1953604fce4fSPawel Jakub Dawidek disk->d_sync.ds_data = malloc(MAXPHYS, M_RAID3, M_WAITOK); 19542d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = disk; 19552d1661a5SPawel Jakub Dawidek } 19562d1661a5SPawel Jakub Dawidek 19572d1661a5SPawel Jakub Dawidek /* 19582d1661a5SPawel Jakub Dawidek * Stop synchronization process. 19592d1661a5SPawel Jakub Dawidek * type: 0 - synchronization finished 19602d1661a5SPawel Jakub Dawidek * 1 - synchronization stopped 19612d1661a5SPawel Jakub Dawidek */ 19622d1661a5SPawel Jakub Dawidek static void 19632d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(struct g_raid3_softc *sc, int type) 19642d1661a5SPawel Jakub Dawidek { 19652d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 19662d1661a5SPawel Jakub Dawidek 19672d1661a5SPawel Jakub Dawidek g_topology_assert(); 19682d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED, 19692d1661a5SPawel Jakub Dawidek ("Device not in DEGRADED state (%s, %u).", sc->sc_name, 19702d1661a5SPawel Jakub Dawidek sc->sc_state)); 19712d1661a5SPawel Jakub Dawidek disk = sc->sc_syncdisk; 19722d1661a5SPawel Jakub Dawidek sc->sc_syncdisk = NULL; 19732d1661a5SPawel Jakub Dawidek KASSERT(disk != NULL, ("No disk was synchronized (%s).", sc->sc_name)); 19742d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 19752d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 19762d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 19772d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_consumer == NULL) 19782d1661a5SPawel Jakub Dawidek return; 19792d1661a5SPawel Jakub Dawidek 19802d1661a5SPawel Jakub Dawidek if (type == 0) { 19812d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s finished.", 19822d1661a5SPawel Jakub Dawidek disk->d_softc->sc_name, g_raid3_get_diskname(disk)); 19832d1661a5SPawel Jakub Dawidek } else /* if (type == 1) */ { 19842d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: rebuilding provider %s stopped.", 19852d1661a5SPawel Jakub Dawidek disk->d_softc->sc_name, g_raid3_get_diskname(disk)); 19862d1661a5SPawel Jakub Dawidek } 1987d97d5ee9SPawel Jakub Dawidek g_raid3_kill_consumer(disk->d_softc, disk->d_sync.ds_consumer); 19882d1661a5SPawel Jakub Dawidek free(disk->d_sync.ds_data, M_RAID3); 19892d1661a5SPawel Jakub Dawidek disk->d_sync.ds_consumer = NULL; 19902d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 19912d1661a5SPawel Jakub Dawidek } 19922d1661a5SPawel Jakub Dawidek 19932d1661a5SPawel Jakub Dawidek static void 19942d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(struct g_raid3_softc *sc) 19952d1661a5SPawel Jakub Dawidek { 19962d1661a5SPawel Jakub Dawidek struct g_provider *pp; 19972d1661a5SPawel Jakub Dawidek 19982d1661a5SPawel Jakub Dawidek g_topology_assert(); 19992d1661a5SPawel Jakub Dawidek 20002d1661a5SPawel Jakub Dawidek pp = g_new_providerf(sc->sc_geom, "raid3/%s", sc->sc_name); 20012d1661a5SPawel Jakub Dawidek pp->mediasize = sc->sc_mediasize; 20022d1661a5SPawel Jakub Dawidek pp->sectorsize = sc->sc_sectorsize; 20032d1661a5SPawel Jakub Dawidek sc->sc_provider = pp; 20042d1661a5SPawel Jakub Dawidek g_error_provider(pp, 0); 20052d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s launched.", sc->sc_name, 20062d1661a5SPawel Jakub Dawidek pp->name); 20072d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED) 20082d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 20092d1661a5SPawel Jakub Dawidek } 20102d1661a5SPawel Jakub Dawidek 20112d1661a5SPawel Jakub Dawidek static void 20122d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(struct g_raid3_softc *sc) 20132d1661a5SPawel Jakub Dawidek { 20142d1661a5SPawel Jakub Dawidek struct bio *bp; 20152d1661a5SPawel Jakub Dawidek 20162d1661a5SPawel Jakub Dawidek g_topology_assert(); 20172d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider != NULL, ("NULL provider (device=%s).", 20182d1661a5SPawel Jakub Dawidek sc->sc_name)); 20192d1661a5SPawel Jakub Dawidek 20202d1661a5SPawel Jakub Dawidek g_error_provider(sc->sc_provider, ENXIO); 20212d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 20222d1661a5SPawel Jakub Dawidek while ((bp = bioq_first(&sc->sc_queue)) != NULL) { 20232d1661a5SPawel Jakub Dawidek bioq_remove(&sc->sc_queue, bp); 20242d1661a5SPawel Jakub Dawidek g_io_deliver(bp, ENXIO); 20252d1661a5SPawel Jakub Dawidek } 20262d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 20272d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s destroyed.", sc->sc_name, 20282d1661a5SPawel Jakub Dawidek sc->sc_provider->name); 20292d1661a5SPawel Jakub Dawidek sc->sc_provider->flags |= G_PF_WITHER; 20302d1661a5SPawel Jakub Dawidek g_orphan_provider(sc->sc_provider, ENXIO); 20312d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 20322d1661a5SPawel Jakub Dawidek if (sc->sc_syncdisk != NULL) 20332d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 1); 20342d1661a5SPawel Jakub Dawidek } 20352d1661a5SPawel Jakub Dawidek 20362d1661a5SPawel Jakub Dawidek static void 20372d1661a5SPawel Jakub Dawidek g_raid3_go(void *arg) 20382d1661a5SPawel Jakub Dawidek { 20392d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 20402d1661a5SPawel Jakub Dawidek 20412d1661a5SPawel Jakub Dawidek sc = arg; 20422d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Force device %s start due to timeout.", sc->sc_name); 20432d1661a5SPawel Jakub Dawidek g_raid3_event_send(sc, 0, 20442d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_DONTWAIT | G_RAID3_EVENT_DEVICE); 20452d1661a5SPawel Jakub Dawidek } 20462d1661a5SPawel Jakub Dawidek 20472d1661a5SPawel Jakub Dawidek static u_int 20482d1661a5SPawel Jakub Dawidek g_raid3_determine_state(struct g_raid3_disk *disk) 20492d1661a5SPawel Jakub Dawidek { 20502d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 20512d1661a5SPawel Jakub Dawidek u_int state; 20522d1661a5SPawel Jakub Dawidek 20532d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 20542d1661a5SPawel Jakub Dawidek if (sc->sc_syncid == disk->d_sync.ds_syncid) { 20552d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 20562d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) == 0) { 20572d1661a5SPawel Jakub Dawidek /* Disk does not need synchronization. */ 20582d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_ACTIVE; 20592d1661a5SPawel Jakub Dawidek } else { 20602d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & 20612d1661a5SPawel Jakub Dawidek G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 20622d1661a5SPawel Jakub Dawidek (disk->d_flags & 20632d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 20642d1661a5SPawel Jakub Dawidek /* 20652d1661a5SPawel Jakub Dawidek * We can start synchronization from 20662d1661a5SPawel Jakub Dawidek * the stored offset. 20672d1661a5SPawel Jakub Dawidek */ 20682d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 20692d1661a5SPawel Jakub Dawidek } else { 20702d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 20712d1661a5SPawel Jakub Dawidek } 20722d1661a5SPawel Jakub Dawidek } 20732d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < sc->sc_syncid) { 20742d1661a5SPawel Jakub Dawidek /* 20752d1661a5SPawel Jakub Dawidek * Reset all synchronization data for this disk, 20762d1661a5SPawel Jakub Dawidek * because if it even was synchronized, it was 20772d1661a5SPawel Jakub Dawidek * synchronized to disks with different syncid. 20782d1661a5SPawel Jakub Dawidek */ 20792d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 20802d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 20812d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 20822d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid = sc->sc_syncid; 20832d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) == 0 || 20842d1661a5SPawel Jakub Dawidek (disk->d_flags & G_RAID3_DISK_FLAG_FORCE_SYNC) != 0) { 20852d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_SYNCHRONIZING; 20862d1661a5SPawel Jakub Dawidek } else { 20872d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_STALE; 20882d1661a5SPawel Jakub Dawidek } 20892d1661a5SPawel Jakub Dawidek } else /* if (sc->sc_syncid < disk->d_sync.ds_syncid) */ { 20902d1661a5SPawel Jakub Dawidek /* 20912d1661a5SPawel Jakub Dawidek * Not good, NOT GOOD! 20922d1661a5SPawel Jakub Dawidek * It means that device was started on stale disks 20932d1661a5SPawel Jakub Dawidek * and more fresh disk just arrive. 20942d1661a5SPawel Jakub Dawidek * If there were writes, device is fucked up, sorry. 20952d1661a5SPawel Jakub Dawidek * I think the best choice here is don't touch 20962d1661a5SPawel Jakub Dawidek * this disk and inform the user laudly. 20972d1661a5SPawel Jakub Dawidek */ 20982d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s was started before the freshest " 20992d1661a5SPawel Jakub Dawidek "disk (%s) arrives!! It will not be connected to the " 21002d1661a5SPawel Jakub Dawidek "running device.", sc->sc_name, 21012d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk)); 21022d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 21032d1661a5SPawel Jakub Dawidek state = G_RAID3_DISK_STATE_NONE; 21042d1661a5SPawel Jakub Dawidek /* Return immediately, because disk was destroyed. */ 21052d1661a5SPawel Jakub Dawidek return (state); 21062d1661a5SPawel Jakub Dawidek } 21072d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "State for %s disk: %s.", 21082d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(state)); 21092d1661a5SPawel Jakub Dawidek return (state); 21102d1661a5SPawel Jakub Dawidek } 21112d1661a5SPawel Jakub Dawidek 21122d1661a5SPawel Jakub Dawidek /* 21132d1661a5SPawel Jakub Dawidek * Update device state. 21142d1661a5SPawel Jakub Dawidek */ 21152d1661a5SPawel Jakub Dawidek static void 2116d97d5ee9SPawel Jakub Dawidek g_raid3_update_device(struct g_raid3_softc *sc, boolean_t force) 21172d1661a5SPawel Jakub Dawidek { 21182d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 21192d1661a5SPawel Jakub Dawidek u_int state; 21202d1661a5SPawel Jakub Dawidek 21212d1661a5SPawel Jakub Dawidek g_topology_assert(); 21222d1661a5SPawel Jakub Dawidek 21232d1661a5SPawel Jakub Dawidek switch (sc->sc_state) { 21242d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_STARTING: 21252d1661a5SPawel Jakub Dawidek { 2126a245a548SPawel Jakub Dawidek u_int n, ndirty, ndisks, genid, syncid; 21272d1661a5SPawel Jakub Dawidek 21282d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_provider == NULL, 21292d1661a5SPawel Jakub Dawidek ("Non-NULL provider in STARTING state (%s).", sc->sc_name)); 21302d1661a5SPawel Jakub Dawidek /* 21312d1661a5SPawel Jakub Dawidek * Are we ready? We are, if all disks are connected or 21322d1661a5SPawel Jakub Dawidek * one disk is missing and 'force' is true. 21332d1661a5SPawel Jakub Dawidek */ 21342d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, -1) + force == sc->sc_ndisks) { 21352d1661a5SPawel Jakub Dawidek if (!force) 21362d1661a5SPawel Jakub Dawidek callout_drain(&sc->sc_callout); 21372d1661a5SPawel Jakub Dawidek } else { 21382d1661a5SPawel Jakub Dawidek if (force) { 21392d1661a5SPawel Jakub Dawidek /* 21402d1661a5SPawel Jakub Dawidek * Timeout expired, so destroy device. 21412d1661a5SPawel Jakub Dawidek */ 21422d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 21432d1661a5SPawel Jakub Dawidek } 21442d1661a5SPawel Jakub Dawidek return; 21452d1661a5SPawel Jakub Dawidek } 21462d1661a5SPawel Jakub Dawidek 21472d1661a5SPawel Jakub Dawidek /* 2148a245a548SPawel Jakub Dawidek * Find the biggest genid. 2149a245a548SPawel Jakub Dawidek */ 2150a245a548SPawel Jakub Dawidek genid = 0; 2151a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2152a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2153a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2154a245a548SPawel Jakub Dawidek continue; 2155a245a548SPawel Jakub Dawidek if (disk->d_genid > genid) 2156a245a548SPawel Jakub Dawidek genid = disk->d_genid; 2157a245a548SPawel Jakub Dawidek } 2158a245a548SPawel Jakub Dawidek sc->sc_genid = genid; 2159a245a548SPawel Jakub Dawidek /* 2160a245a548SPawel Jakub Dawidek * Remove all disks without the biggest genid. 2161a245a548SPawel Jakub Dawidek */ 2162a245a548SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2163a245a548SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 2164a245a548SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 2165a245a548SPawel Jakub Dawidek continue; 2166a245a548SPawel Jakub Dawidek if (disk->d_genid < genid) { 2167a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2168a245a548SPawel Jakub Dawidek "Component %s (device %s) broken, skipping.", 2169a245a548SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 2170a245a548SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 2171a245a548SPawel Jakub Dawidek } 2172a245a548SPawel Jakub Dawidek } 2173a245a548SPawel Jakub Dawidek 2174a245a548SPawel Jakub Dawidek /* 21752d1661a5SPawel Jakub Dawidek * There must be at least 'sc->sc_ndisks - 1' components 21762d1661a5SPawel Jakub Dawidek * with the same syncid and without SYNCHRONIZING flag. 21772d1661a5SPawel Jakub Dawidek */ 21782d1661a5SPawel Jakub Dawidek 21792d1661a5SPawel Jakub Dawidek /* 21802d1661a5SPawel Jakub Dawidek * Find the biggest syncid, number of valid components and 21812d1661a5SPawel Jakub Dawidek * number of dirty components. 21822d1661a5SPawel Jakub Dawidek */ 21832d1661a5SPawel Jakub Dawidek ndirty = ndisks = syncid = 0; 21842d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 21852d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 21862d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 21872d1661a5SPawel Jakub Dawidek continue; 21882d1661a5SPawel Jakub Dawidek if ((disk->d_flags & G_RAID3_DISK_FLAG_DIRTY) != 0) 21892d1661a5SPawel Jakub Dawidek ndirty++; 21902d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_syncid > syncid) { 21912d1661a5SPawel Jakub Dawidek syncid = disk->d_sync.ds_syncid; 21922d1661a5SPawel Jakub Dawidek ndisks = 0; 21932d1661a5SPawel Jakub Dawidek } else if (disk->d_sync.ds_syncid < syncid) { 21942d1661a5SPawel Jakub Dawidek continue; 21952d1661a5SPawel Jakub Dawidek } 21962d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 21972d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING) != 0) { 21982d1661a5SPawel Jakub Dawidek continue; 21992d1661a5SPawel Jakub Dawidek } 22002d1661a5SPawel Jakub Dawidek ndisks++; 22012d1661a5SPawel Jakub Dawidek } 22022d1661a5SPawel Jakub Dawidek /* 22032d1661a5SPawel Jakub Dawidek * Do we have enough valid components? 22042d1661a5SPawel Jakub Dawidek */ 22052d1661a5SPawel Jakub Dawidek if (ndisks + 1 < sc->sc_ndisks) { 22062d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, 22072d1661a5SPawel Jakub Dawidek "Device %s is broken, too few valid components.", 22082d1661a5SPawel Jakub Dawidek sc->sc_name); 22092d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 22102d1661a5SPawel Jakub Dawidek return; 22112d1661a5SPawel Jakub Dawidek } 22122d1661a5SPawel Jakub Dawidek /* 22132d1661a5SPawel Jakub Dawidek * If there is one DIRTY component and all disks are present, 22142d1661a5SPawel Jakub Dawidek * mark it for synchronization. If there is more than one DIRTY 22152d1661a5SPawel Jakub Dawidek * component, mark parity component for synchronization. 22162d1661a5SPawel Jakub Dawidek */ 22172d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks && ndirty == 1) { 22182d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 22192d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 22202d1661a5SPawel Jakub Dawidek if ((disk->d_flags & 22212d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_DIRTY) == 0) { 22222d1661a5SPawel Jakub Dawidek continue; 22232d1661a5SPawel Jakub Dawidek } 22242d1661a5SPawel Jakub Dawidek disk->d_flags |= 22252d1661a5SPawel Jakub Dawidek G_RAID3_DISK_FLAG_SYNCHRONIZING; 22262d1661a5SPawel Jakub Dawidek } 22272d1661a5SPawel Jakub Dawidek } else if (ndisks == sc->sc_ndisks && ndirty > 1) { 22282d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[sc->sc_ndisks - 1]; 22292d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_SYNCHRONIZING; 22302d1661a5SPawel Jakub Dawidek } 22312d1661a5SPawel Jakub Dawidek 22322d1661a5SPawel Jakub Dawidek sc->sc_syncid = syncid; 22332d1661a5SPawel Jakub Dawidek if (force) { 22342d1661a5SPawel Jakub Dawidek /* Remember to bump syncid on first write. */ 2235ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 22362d1661a5SPawel Jakub Dawidek } 22372d1661a5SPawel Jakub Dawidek if (ndisks == sc->sc_ndisks) 22382d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 22392d1661a5SPawel Jakub Dawidek else /* if (ndisks == sc->sc_ndisks - 1) */ 22402d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 22412d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s state changed from %s to %s.", 22422d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 22432d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 22442d1661a5SPawel Jakub Dawidek sc->sc_state = state; 22452d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 22462d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 22472d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NODISK) 22482d1661a5SPawel Jakub Dawidek continue; 22492d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 22502d1661a5SPawel Jakub Dawidek g_raid3_event_send(disk, state, G_RAID3_EVENT_DONTWAIT); 2251a245a548SPawel Jakub Dawidek if (state == G_RAID3_DISK_STATE_STALE) 2252ea973705SPawel Jakub Dawidek sc->sc_bump_id |= G_RAID3_BUMP_SYNCID; 22532d1661a5SPawel Jakub Dawidek } 22542d1661a5SPawel Jakub Dawidek break; 22552d1661a5SPawel Jakub Dawidek } 22562d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_DEGRADED: 22572d1661a5SPawel Jakub Dawidek /* 2258ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 22592d1661a5SPawel Jakub Dawidek */ 2260ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2261a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2262a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2263a245a548SPawel Jakub Dawidek } 2264a245a548SPawel Jakub Dawidek 22652d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 22662d1661a5SPawel Jakub Dawidek return; 22672d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < 22682d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 22692d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) 22702d1661a5SPawel Jakub Dawidek g_raid3_destroy_provider(sc); 22712d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 22722d1661a5SPawel Jakub Dawidek return; 22732d1661a5SPawel Jakub Dawidek } 22742d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 22752d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 22762d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_COMPLETE; 22772d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 22782d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 22792d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 22802d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 22812d1661a5SPawel Jakub Dawidek sc->sc_state = state; 22822d1661a5SPawel Jakub Dawidek } 22832d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 22842d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 22852d1661a5SPawel Jakub Dawidek break; 22862d1661a5SPawel Jakub Dawidek case G_RAID3_DEVICE_STATE_COMPLETE: 22872d1661a5SPawel Jakub Dawidek /* 2288ea973705SPawel Jakub Dawidek * Genid need to be bumped immediately, so do it here. 22892d1661a5SPawel Jakub Dawidek */ 2290ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_GENID) != 0) { 2291a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_GENID; 2292a245a548SPawel Jakub Dawidek g_raid3_bump_genid(sc); 2293a245a548SPawel Jakub Dawidek } 2294a245a548SPawel Jakub Dawidek 22952d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NEW) > 0) 22962d1661a5SPawel Jakub Dawidek return; 22972d1661a5SPawel Jakub Dawidek KASSERT(g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) >= 22982d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1, 22992d1661a5SPawel Jakub Dawidek ("Too few ACTIVE components in COMPLETE state (device %s).", 23002d1661a5SPawel Jakub Dawidek sc->sc_name)); 23012d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) == 23022d1661a5SPawel Jakub Dawidek sc->sc_ndisks - 1) { 23032d1661a5SPawel Jakub Dawidek state = G_RAID3_DEVICE_STATE_DEGRADED; 23042d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 23052d1661a5SPawel Jakub Dawidek "Device %s state changed from %s to %s.", 23062d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_device_state2str(sc->sc_state), 23072d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(state)); 23082d1661a5SPawel Jakub Dawidek sc->sc_state = state; 23092d1661a5SPawel Jakub Dawidek } 23102d1661a5SPawel Jakub Dawidek if (sc->sc_provider == NULL) 23112d1661a5SPawel Jakub Dawidek g_raid3_launch_provider(sc); 23122d1661a5SPawel Jakub Dawidek break; 23132d1661a5SPawel Jakub Dawidek default: 23142d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s).", sc->sc_name, 23152d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state))); 23162d1661a5SPawel Jakub Dawidek break; 23172d1661a5SPawel Jakub Dawidek } 23182d1661a5SPawel Jakub Dawidek } 23192d1661a5SPawel Jakub Dawidek 23202d1661a5SPawel Jakub Dawidek /* 23212d1661a5SPawel Jakub Dawidek * Update disk state and device state if needed. 23222d1661a5SPawel Jakub Dawidek */ 23232d1661a5SPawel Jakub Dawidek #define DISK_STATE_CHANGED() G_RAID3_DEBUG(1, \ 23242d1661a5SPawel Jakub Dawidek "Disk %s state changed from %s to %s (device %s).", \ 23252d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), \ 23262d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state), \ 23272d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state), sc->sc_name) 23282d1661a5SPawel Jakub Dawidek static int 2329d97d5ee9SPawel Jakub Dawidek g_raid3_update_disk(struct g_raid3_disk *disk, u_int state) 23302d1661a5SPawel Jakub Dawidek { 23312d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 23322d1661a5SPawel Jakub Dawidek 23332d1661a5SPawel Jakub Dawidek g_topology_assert(); 23342d1661a5SPawel Jakub Dawidek 23352d1661a5SPawel Jakub Dawidek sc = disk->d_softc; 23362d1661a5SPawel Jakub Dawidek again: 23372d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(3, "Changing disk %s state from %s to %s.", 23382d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), g_raid3_disk_state2str(disk->d_state), 23392d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(state)); 23402d1661a5SPawel Jakub Dawidek switch (state) { 23412d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_NEW: 23422d1661a5SPawel Jakub Dawidek /* 23432d1661a5SPawel Jakub Dawidek * Possible scenarios: 23442d1661a5SPawel Jakub Dawidek * 1. New disk arrive. 23452d1661a5SPawel Jakub Dawidek */ 23462d1661a5SPawel Jakub Dawidek /* Previous state should be NONE. */ 23472d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NONE, 23482d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 23492d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 23502d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 23512d1661a5SPawel Jakub Dawidek 23522d1661a5SPawel Jakub Dawidek disk->d_state = state; 23532d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s detected.", 23542d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 23552d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) 23562d1661a5SPawel Jakub Dawidek break; 23572d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 23582d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 23592d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 23602d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 23612d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 23622d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 23632d1661a5SPawel Jakub Dawidek state = g_raid3_determine_state(disk); 23642d1661a5SPawel Jakub Dawidek if (state != G_RAID3_DISK_STATE_NONE) 23652d1661a5SPawel Jakub Dawidek goto again; 23662d1661a5SPawel Jakub Dawidek break; 23672d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_ACTIVE: 23682d1661a5SPawel Jakub Dawidek /* 23692d1661a5SPawel Jakub Dawidek * Possible scenarios: 23702d1661a5SPawel Jakub Dawidek * 1. New disk does not need synchronization. 23712d1661a5SPawel Jakub Dawidek * 2. Synchronization process finished successfully. 23722d1661a5SPawel Jakub Dawidek */ 23732d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 23742d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 23752d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 23762d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 23772d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 23782d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 23792d1661a5SPawel Jakub Dawidek /* Previous state should be NEW or SYNCHRONIZING. */ 23802d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW || 23812d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 23822d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 23832d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 23842d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 23852d1661a5SPawel Jakub Dawidek 23862d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NEW) 23872d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 23882d1661a5SPawel Jakub Dawidek else if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 23892d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_SYNCHRONIZING; 23902d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_FORCE_SYNC; 23912d1661a5SPawel Jakub Dawidek g_raid3_sync_stop(sc, 0); 23922d1661a5SPawel Jakub Dawidek } 23932d1661a5SPawel Jakub Dawidek disk->d_state = state; 23942d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset = 0; 23952d1661a5SPawel Jakub Dawidek disk->d_sync.ds_offset_done = 0; 23962d1661a5SPawel Jakub Dawidek g_raid3_update_access(disk); 23972d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 23982d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s activated.", 23992d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 24002d1661a5SPawel Jakub Dawidek break; 24012d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_STALE: 24022d1661a5SPawel Jakub Dawidek /* 24032d1661a5SPawel Jakub Dawidek * Possible scenarios: 24042d1661a5SPawel Jakub Dawidek * 1. Stale disk was connected. 24052d1661a5SPawel Jakub Dawidek */ 24062d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 24072d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 24082d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 24092d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24102d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 24112d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 24122d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 24132d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 24142d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24152d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24162d1661a5SPawel Jakub Dawidek /* 24172d1661a5SPawel Jakub Dawidek * STALE state is only possible if device is marked 24182d1661a5SPawel Jakub Dawidek * NOAUTOSYNC. 24192d1661a5SPawel Jakub Dawidek */ 24202d1661a5SPawel Jakub Dawidek KASSERT((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) != 0, 24212d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 24222d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 24232d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24242d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24252d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 24262d1661a5SPawel Jakub Dawidek 24272d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 24282d1661a5SPawel Jakub Dawidek disk->d_state = state; 24292d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 24302d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s is stale.", 24312d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 24322d1661a5SPawel Jakub Dawidek break; 24332d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_SYNCHRONIZING: 24342d1661a5SPawel Jakub Dawidek /* 24352d1661a5SPawel Jakub Dawidek * Possible scenarios: 24362d1661a5SPawel Jakub Dawidek * 1. Disk which needs synchronization was connected. 24372d1661a5SPawel Jakub Dawidek */ 24382d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 24392d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 24402d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", g_raid3_get_diskname(disk), 24412d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24422d1661a5SPawel Jakub Dawidek KASSERT(sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 24432d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE, 24442d1661a5SPawel Jakub Dawidek ("Wrong device state (%s, %s, %s, %s).", sc->sc_name, 24452d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 24462d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24472d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24482d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 24492d1661a5SPawel Jakub Dawidek 24502d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_NEW) 24512d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 24522d1661a5SPawel Jakub Dawidek disk->d_state = state; 24532d1661a5SPawel Jakub Dawidek if (sc->sc_provider != NULL) { 24542d1661a5SPawel Jakub Dawidek g_raid3_sync_start(sc); 24552d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 24562d1661a5SPawel Jakub Dawidek } 24572d1661a5SPawel Jakub Dawidek break; 24582d1661a5SPawel Jakub Dawidek case G_RAID3_DISK_STATE_DISCONNECTED: 24592d1661a5SPawel Jakub Dawidek /* 24602d1661a5SPawel Jakub Dawidek * Possible scenarios: 24612d1661a5SPawel Jakub Dawidek * 1. Device wasn't running yet, but disk disappear. 24622d1661a5SPawel Jakub Dawidek * 2. Disk was active and disapppear. 24632d1661a5SPawel Jakub Dawidek * 3. Disk disappear during synchronization process. 24642d1661a5SPawel Jakub Dawidek */ 24652d1661a5SPawel Jakub Dawidek if (sc->sc_state == G_RAID3_DEVICE_STATE_DEGRADED || 24662d1661a5SPawel Jakub Dawidek sc->sc_state == G_RAID3_DEVICE_STATE_COMPLETE) { 24672d1661a5SPawel Jakub Dawidek /* 24682d1661a5SPawel Jakub Dawidek * Previous state should be ACTIVE, STALE or 24692d1661a5SPawel Jakub Dawidek * SYNCHRONIZING. 24702d1661a5SPawel Jakub Dawidek */ 24712d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_ACTIVE || 24722d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_STALE || 24732d1661a5SPawel Jakub Dawidek disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING, 24742d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 24752d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24762d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24772d1661a5SPawel Jakub Dawidek } else if (sc->sc_state == G_RAID3_DEVICE_STATE_STARTING) { 24782d1661a5SPawel Jakub Dawidek /* Previous state should be NEW. */ 24792d1661a5SPawel Jakub Dawidek KASSERT(disk->d_state == G_RAID3_DISK_STATE_NEW, 24802d1661a5SPawel Jakub Dawidek ("Wrong disk state (%s, %s).", 24812d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24822d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24832d1661a5SPawel Jakub Dawidek /* 24842d1661a5SPawel Jakub Dawidek * Reset bumping syncid if disk disappeared in STARTING 24852d1661a5SPawel Jakub Dawidek * state. 24862d1661a5SPawel Jakub Dawidek */ 2487ea973705SPawel Jakub Dawidek if ((sc->sc_bump_id & G_RAID3_BUMP_SYNCID) != 0) 2488a245a548SPawel Jakub Dawidek sc->sc_bump_id &= ~G_RAID3_BUMP_SYNCID; 24892d1661a5SPawel Jakub Dawidek #ifdef INVARIANTS 24902d1661a5SPawel Jakub Dawidek } else { 24912d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Wrong device state (%s, %s, %s, %s).", 24922d1661a5SPawel Jakub Dawidek sc->sc_name, 24932d1661a5SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state), 24942d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), 24952d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state))); 24962d1661a5SPawel Jakub Dawidek #endif 24972d1661a5SPawel Jakub Dawidek } 24982d1661a5SPawel Jakub Dawidek DISK_STATE_CHANGED(); 24992d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s: provider %s disconnected.", 25002d1661a5SPawel Jakub Dawidek sc->sc_name, g_raid3_get_diskname(disk)); 25012d1661a5SPawel Jakub Dawidek 25022d1661a5SPawel Jakub Dawidek g_raid3_destroy_disk(disk); 25032d1661a5SPawel Jakub Dawidek break; 25042d1661a5SPawel Jakub Dawidek default: 25052d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("Unknown state (%u).", state)); 25062d1661a5SPawel Jakub Dawidek break; 25072d1661a5SPawel Jakub Dawidek } 25082d1661a5SPawel Jakub Dawidek return (0); 25092d1661a5SPawel Jakub Dawidek } 25102d1661a5SPawel Jakub Dawidek #undef DISK_STATE_CHANGED 25112d1661a5SPawel Jakub Dawidek 2512ea973705SPawel Jakub Dawidek int 25132d1661a5SPawel Jakub Dawidek g_raid3_read_metadata(struct g_consumer *cp, struct g_raid3_metadata *md) 25142d1661a5SPawel Jakub Dawidek { 25152d1661a5SPawel Jakub Dawidek struct g_provider *pp; 25162d1661a5SPawel Jakub Dawidek u_char *buf; 25172d1661a5SPawel Jakub Dawidek int error; 25182d1661a5SPawel Jakub Dawidek 25192d1661a5SPawel Jakub Dawidek g_topology_assert(); 25202d1661a5SPawel Jakub Dawidek 25212d1661a5SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 25222d1661a5SPawel Jakub Dawidek if (error != 0) 25232d1661a5SPawel Jakub Dawidek return (error); 25242d1661a5SPawel Jakub Dawidek pp = cp->provider; 25252d1661a5SPawel Jakub Dawidek g_topology_unlock(); 25262d1661a5SPawel Jakub Dawidek /* Metadata are stored on last sector. */ 25272d1661a5SPawel Jakub Dawidek buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize, 25282d1661a5SPawel Jakub Dawidek &error); 25292d1661a5SPawel Jakub Dawidek g_topology_lock(); 25302d1661a5SPawel Jakub Dawidek g_access(cp, -1, 0, 0); 25312d1661a5SPawel Jakub Dawidek if (error != 0) { 2532a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot read metadata from %s (error=%d).", 2533a245a548SPawel Jakub Dawidek cp->provider->name, error); 2534d97d5ee9SPawel Jakub Dawidek if (buf != NULL) 25352d1661a5SPawel Jakub Dawidek g_free(buf); 25362d1661a5SPawel Jakub Dawidek return (error); 25372d1661a5SPawel Jakub Dawidek } 25382d1661a5SPawel Jakub Dawidek 25392d1661a5SPawel Jakub Dawidek /* Decode metadata. */ 25402d1661a5SPawel Jakub Dawidek error = raid3_metadata_decode(buf, md); 25412d1661a5SPawel Jakub Dawidek g_free(buf); 25422d1661a5SPawel Jakub Dawidek if (strcmp(md->md_magic, G_RAID3_MAGIC) != 0) 25432d1661a5SPawel Jakub Dawidek return (EINVAL); 2544a245a548SPawel Jakub Dawidek if (md->md_version > G_RAID3_VERSION) { 2545a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, 2546a245a548SPawel Jakub Dawidek "Kernel module is too old to handle metadata from %s.", 2547a245a548SPawel Jakub Dawidek cp->provider->name); 2548a245a548SPawel Jakub Dawidek return (EINVAL); 2549a245a548SPawel Jakub Dawidek } 25502d1661a5SPawel Jakub Dawidek if (error != 0) { 25512d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "MD5 metadata hash mismatch for provider %s.", 25522d1661a5SPawel Jakub Dawidek cp->provider->name); 25532d1661a5SPawel Jakub Dawidek return (error); 25542d1661a5SPawel Jakub Dawidek } 25552d1661a5SPawel Jakub Dawidek 25562d1661a5SPawel Jakub Dawidek return (0); 25572d1661a5SPawel Jakub Dawidek } 25582d1661a5SPawel Jakub Dawidek 25592d1661a5SPawel Jakub Dawidek static int 25602d1661a5SPawel Jakub Dawidek g_raid3_check_metadata(struct g_raid3_softc *sc, struct g_provider *pp, 25612d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 25622d1661a5SPawel Jakub Dawidek { 25632d1661a5SPawel Jakub Dawidek 25642d1661a5SPawel Jakub Dawidek if (md->md_no >= sc->sc_ndisks) { 25652d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Invalid disk %s number (no=%u), skipping.", 25662d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 25672d1661a5SPawel Jakub Dawidek return (EINVAL); 25682d1661a5SPawel Jakub Dawidek } 25692d1661a5SPawel Jakub Dawidek if (sc->sc_disks[md->md_no].d_state != G_RAID3_DISK_STATE_NODISK) { 25702d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (no=%u) already exists, skipping.", 25712d1661a5SPawel Jakub Dawidek pp->name, md->md_no); 25722d1661a5SPawel Jakub Dawidek return (EEXIST); 25732d1661a5SPawel Jakub Dawidek } 25742d1661a5SPawel Jakub Dawidek if (md->md_all != sc->sc_ndisks) { 25752d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 25762d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 25772d1661a5SPawel Jakub Dawidek "md_all", pp->name, sc->sc_name); 25782d1661a5SPawel Jakub Dawidek return (EINVAL); 25792d1661a5SPawel Jakub Dawidek } 25802d1661a5SPawel Jakub Dawidek if (md->md_mediasize != sc->sc_mediasize) { 25812d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 25822d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 25832d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 25842d1661a5SPawel Jakub Dawidek return (EINVAL); 25852d1661a5SPawel Jakub Dawidek } 25862d1661a5SPawel Jakub Dawidek if ((md->md_mediasize % (sc->sc_ndisks - 1)) != 0) { 25872d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 25882d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 25892d1661a5SPawel Jakub Dawidek "md_mediasize", pp->name, sc->sc_name); 25902d1661a5SPawel Jakub Dawidek return (EINVAL); 25912d1661a5SPawel Jakub Dawidek } 25922d1661a5SPawel Jakub Dawidek if ((sc->sc_mediasize / (sc->sc_ndisks - 1)) > pp->mediasize) { 25932d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 25942d1661a5SPawel Jakub Dawidek "Invalid size of disk %s (device %s), skipping.", pp->name, 25952d1661a5SPawel Jakub Dawidek sc->sc_name); 25962d1661a5SPawel Jakub Dawidek return (EINVAL); 25972d1661a5SPawel Jakub Dawidek } 25982d1661a5SPawel Jakub Dawidek if ((md->md_sectorsize / pp->sectorsize) < sc->sc_ndisks - 1) { 25992d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26002d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 26012d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 26022d1661a5SPawel Jakub Dawidek return (EINVAL); 26032d1661a5SPawel Jakub Dawidek } 26042d1661a5SPawel Jakub Dawidek if (md->md_sectorsize != sc->sc_sectorsize) { 26052d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26062d1661a5SPawel Jakub Dawidek "Invalid '%s' field on disk %s (device %s), skipping.", 26072d1661a5SPawel Jakub Dawidek "md_sectorsize", pp->name, sc->sc_name); 26082d1661a5SPawel Jakub Dawidek return (EINVAL); 26092d1661a5SPawel Jakub Dawidek } 26102d1661a5SPawel Jakub Dawidek if ((sc->sc_sectorsize % pp->sectorsize) != 0) { 26112d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26122d1661a5SPawel Jakub Dawidek "Invalid sector size of disk %s (device %s), skipping.", 26132d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 26142d1661a5SPawel Jakub Dawidek return (EINVAL); 26152d1661a5SPawel Jakub Dawidek } 26162d1661a5SPawel Jakub Dawidek if ((md->md_mflags & ~G_RAID3_DEVICE_FLAG_MASK) != 0) { 26172d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26182d1661a5SPawel Jakub Dawidek "Invalid device flags on disk %s (device %s), skipping.", 26192d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 26202d1661a5SPawel Jakub Dawidek return (EINVAL); 26212d1661a5SPawel Jakub Dawidek } 2622dba915cfSPawel Jakub Dawidek if ((md->md_mflags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 && 2623dba915cfSPawel Jakub Dawidek (md->md_mflags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0) { 2624dba915cfSPawel Jakub Dawidek /* 2625dba915cfSPawel Jakub Dawidek * VERIFY and ROUND-ROBIN options are mutally exclusive. 2626dba915cfSPawel Jakub Dawidek */ 2627dba915cfSPawel Jakub Dawidek G_RAID3_DEBUG(1, "Both VERIFY and ROUND-ROBIN flags exist on " 2628dba915cfSPawel Jakub Dawidek "disk %s (device %s), skipping.", pp->name, sc->sc_name); 2629dba915cfSPawel Jakub Dawidek return (EINVAL); 2630dba915cfSPawel Jakub Dawidek } 26312d1661a5SPawel Jakub Dawidek if ((md->md_dflags & ~G_RAID3_DISK_FLAG_MASK) != 0) { 26322d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 26332d1661a5SPawel Jakub Dawidek "Invalid disk flags on disk %s (device %s), skipping.", 26342d1661a5SPawel Jakub Dawidek pp->name, sc->sc_name); 26352d1661a5SPawel Jakub Dawidek return (EINVAL); 26362d1661a5SPawel Jakub Dawidek } 26372d1661a5SPawel Jakub Dawidek return (0); 26382d1661a5SPawel Jakub Dawidek } 26392d1661a5SPawel Jakub Dawidek 2640ea973705SPawel Jakub Dawidek int 26412d1661a5SPawel Jakub Dawidek g_raid3_add_disk(struct g_raid3_softc *sc, struct g_provider *pp, 26422d1661a5SPawel Jakub Dawidek struct g_raid3_metadata *md) 26432d1661a5SPawel Jakub Dawidek { 26442d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 26452d1661a5SPawel Jakub Dawidek int error; 26462d1661a5SPawel Jakub Dawidek 26472d1661a5SPawel Jakub Dawidek g_topology_assert(); 26482d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Adding disk %s.", pp->name); 26492d1661a5SPawel Jakub Dawidek 26502d1661a5SPawel Jakub Dawidek error = g_raid3_check_metadata(sc, pp, md); 26512d1661a5SPawel Jakub Dawidek if (error != 0) 26522d1661a5SPawel Jakub Dawidek return (error); 2653a245a548SPawel Jakub Dawidek if (sc->sc_state != G_RAID3_DEVICE_STATE_STARTING && 2654a245a548SPawel Jakub Dawidek md->md_genid < sc->sc_genid) { 2655a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Component %s (device %s) broken, skipping.", 2656a245a548SPawel Jakub Dawidek pp->name, sc->sc_name); 2657a245a548SPawel Jakub Dawidek return (EINVAL); 2658a245a548SPawel Jakub Dawidek } 26592d1661a5SPawel Jakub Dawidek disk = g_raid3_init_disk(sc, pp, md, &error); 26602d1661a5SPawel Jakub Dawidek if (disk == NULL) 26612d1661a5SPawel Jakub Dawidek return (error); 26622d1661a5SPawel Jakub Dawidek error = g_raid3_event_send(disk, G_RAID3_DISK_STATE_NEW, 26632d1661a5SPawel Jakub Dawidek G_RAID3_EVENT_WAIT); 2664a245a548SPawel Jakub Dawidek if (error != 0) 26652d1661a5SPawel Jakub Dawidek return (error); 2666a245a548SPawel Jakub Dawidek if (md->md_version < G_RAID3_VERSION) { 2667a245a548SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Upgrading metadata on %s (v%d->v%d).", 2668a245a548SPawel Jakub Dawidek pp->name, md->md_version, G_RAID3_VERSION); 2669a245a548SPawel Jakub Dawidek g_raid3_update_metadata(disk); 2670a245a548SPawel Jakub Dawidek } 2671a245a548SPawel Jakub Dawidek return (0); 26722d1661a5SPawel Jakub Dawidek } 26732d1661a5SPawel Jakub Dawidek 26742d1661a5SPawel Jakub Dawidek static int 26752d1661a5SPawel Jakub Dawidek g_raid3_access(struct g_provider *pp, int acr, int acw, int ace) 26762d1661a5SPawel Jakub Dawidek { 26772d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 26782d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 2679d97d5ee9SPawel Jakub Dawidek int dcr, dcw, dce; 26802d1661a5SPawel Jakub Dawidek u_int n; 26812d1661a5SPawel Jakub Dawidek 26822d1661a5SPawel Jakub Dawidek g_topology_assert(); 26832d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Access request for %s: r%dw%de%d.", pp->name, acr, 26842d1661a5SPawel Jakub Dawidek acw, ace); 26852d1661a5SPawel Jakub Dawidek 26862d1661a5SPawel Jakub Dawidek dcr = pp->acr + acr; 26872d1661a5SPawel Jakub Dawidek dcw = pp->acw + acw; 26882d1661a5SPawel Jakub Dawidek dce = pp->ace + ace; 26892d1661a5SPawel Jakub Dawidek 26902d1661a5SPawel Jakub Dawidek sc = pp->geom->softc; 26912d1661a5SPawel Jakub Dawidek if (sc == NULL || 2692463674f7SPawel Jakub Dawidek g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < sc->sc_ndisks - 1 || 2693463674f7SPawel Jakub Dawidek (sc->sc_flags & G_RAID3_DEVICE_FLAG_DESTROY) != 0) { 26942d1661a5SPawel Jakub Dawidek if (acr <= 0 && acw <= 0 && ace <= 0) 26952d1661a5SPawel Jakub Dawidek return (0); 26962d1661a5SPawel Jakub Dawidek else 26972d1661a5SPawel Jakub Dawidek return (ENXIO); 26982d1661a5SPawel Jakub Dawidek } 26992d1661a5SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 27002d1661a5SPawel Jakub Dawidek disk = &sc->sc_disks[n]; 27012d1661a5SPawel Jakub Dawidek if (disk->d_state != G_RAID3_DISK_STATE_ACTIVE) 27022d1661a5SPawel Jakub Dawidek continue; 27032d1661a5SPawel Jakub Dawidek /* 27042d1661a5SPawel Jakub Dawidek * Mark disk as dirty on open and unmark on close. 27052d1661a5SPawel Jakub Dawidek */ 27062d1661a5SPawel Jakub Dawidek if (pp->acw == 0 && dcw > 0) { 2707d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as dirty.", 27082d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 27092d1661a5SPawel Jakub Dawidek disk->d_flags |= G_RAID3_DISK_FLAG_DIRTY; 27102d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27112d1661a5SPawel Jakub Dawidek } else if (pp->acw > 0 && dcw == 0) { 2712d97d5ee9SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Disk %s (device %s) marked as clean.", 27132d1661a5SPawel Jakub Dawidek g_raid3_get_diskname(disk), sc->sc_name); 27142d1661a5SPawel Jakub Dawidek disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY; 27152d1661a5SPawel Jakub Dawidek g_raid3_update_metadata(disk); 27162d1661a5SPawel Jakub Dawidek } 27172d1661a5SPawel Jakub Dawidek } 2718d97d5ee9SPawel Jakub Dawidek return (0); 27192d1661a5SPawel Jakub Dawidek } 27202d1661a5SPawel Jakub Dawidek 27212d1661a5SPawel Jakub Dawidek static struct g_geom * 27222d1661a5SPawel Jakub Dawidek g_raid3_create(struct g_class *mp, const struct g_raid3_metadata *md) 27232d1661a5SPawel Jakub Dawidek { 27242d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 27252d1661a5SPawel Jakub Dawidek struct g_geom *gp; 27262d1661a5SPawel Jakub Dawidek int error, timeout; 27272d1661a5SPawel Jakub Dawidek u_int n; 27282d1661a5SPawel Jakub Dawidek 27292d1661a5SPawel Jakub Dawidek g_topology_assert(); 27302d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Creating device %s (id=%u).", md->md_name, md->md_id); 27312d1661a5SPawel Jakub Dawidek 27322d1661a5SPawel Jakub Dawidek /* One disk is minimum. */ 27332d1661a5SPawel Jakub Dawidek if (md->md_all < 1) 27342d1661a5SPawel Jakub Dawidek return (NULL); 27352d1661a5SPawel Jakub Dawidek /* 27362d1661a5SPawel Jakub Dawidek * Action geom. 27372d1661a5SPawel Jakub Dawidek */ 27382d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s", md->md_name); 27392d1661a5SPawel Jakub Dawidek sc = malloc(sizeof(*sc), M_RAID3, M_WAITOK | M_ZERO); 27402d1661a5SPawel Jakub Dawidek sc->sc_disks = malloc(sizeof(struct g_raid3_disk) * md->md_all, M_RAID3, 27412d1661a5SPawel Jakub Dawidek M_WAITOK | M_ZERO); 27422d1661a5SPawel Jakub Dawidek gp->start = g_raid3_start; 27432d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 27442d1661a5SPawel Jakub Dawidek gp->access = g_raid3_access; 27452d1661a5SPawel Jakub Dawidek gp->dumpconf = g_raid3_dumpconf; 27462d1661a5SPawel Jakub Dawidek 27472d1661a5SPawel Jakub Dawidek sc->sc_id = md->md_id; 27482d1661a5SPawel Jakub Dawidek sc->sc_mediasize = md->md_mediasize; 27492d1661a5SPawel Jakub Dawidek sc->sc_sectorsize = md->md_sectorsize; 27502d1661a5SPawel Jakub Dawidek sc->sc_ndisks = md->md_all; 2751f5a2f7feSPawel Jakub Dawidek sc->sc_round_robin = 0; 27522d1661a5SPawel Jakub Dawidek sc->sc_flags = md->md_mflags; 2753a245a548SPawel Jakub Dawidek sc->sc_bump_id = 0; 27544d006a98SPawel Jakub Dawidek sc->sc_idle = 0; 2755afd05d74SPawel Jakub Dawidek for (n = 0; n < sc->sc_ndisks; n++) { 2756afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_softc = sc; 2757afd05d74SPawel Jakub Dawidek sc->sc_disks[n].d_no = n; 27582d1661a5SPawel Jakub Dawidek sc->sc_disks[n].d_state = G_RAID3_DISK_STATE_NODISK; 2759afd05d74SPawel Jakub Dawidek } 27602d1661a5SPawel Jakub Dawidek bioq_init(&sc->sc_queue); 27612d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_queue_mtx, "graid3:queue", NULL, MTX_DEF); 27622d1661a5SPawel Jakub Dawidek TAILQ_INIT(&sc->sc_events); 27632d1661a5SPawel Jakub Dawidek mtx_init(&sc->sc_events_mtx, "graid3:events", NULL, MTX_DEF); 27642d1661a5SPawel Jakub Dawidek callout_init(&sc->sc_callout, CALLOUT_MPSAFE); 27652d1661a5SPawel Jakub Dawidek sc->sc_state = G_RAID3_DEVICE_STATE_STARTING; 27662d1661a5SPawel Jakub Dawidek gp->softc = sc; 27672d1661a5SPawel Jakub Dawidek sc->sc_geom = gp; 27682d1661a5SPawel Jakub Dawidek sc->sc_provider = NULL; 27692d1661a5SPawel Jakub Dawidek /* 27702d1661a5SPawel Jakub Dawidek * Synchronization geom. 27712d1661a5SPawel Jakub Dawidek */ 27722d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s.sync", md->md_name); 27732d1661a5SPawel Jakub Dawidek gp->softc = sc; 27742d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_orphan; 27752d1661a5SPawel Jakub Dawidek sc->sc_sync.ds_geom = gp; 27762d1661a5SPawel Jakub Dawidek sc->sc_zone_64k = uma_zcreate("gr3:64k", 65536, NULL, NULL, NULL, NULL, 27772d1661a5SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 27782d1661a5SPawel Jakub Dawidek uma_zone_set_max(sc->sc_zone_64k, g_raid3_n64k); 27792d1661a5SPawel Jakub Dawidek sc->sc_zone_16k = uma_zcreate("gr3:16k", 16384, NULL, NULL, NULL, NULL, 27802d1661a5SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 27812d1661a5SPawel Jakub Dawidek uma_zone_set_max(sc->sc_zone_64k, g_raid3_n16k); 27822d1661a5SPawel Jakub Dawidek sc->sc_zone_4k = uma_zcreate("gr3:4k", 4096, NULL, NULL, NULL, NULL, 27832d1661a5SPawel Jakub Dawidek UMA_ALIGN_PTR, 0); 27842d1661a5SPawel Jakub Dawidek uma_zone_set_max(sc->sc_zone_4k, g_raid3_n4k); 27852d1661a5SPawel Jakub Dawidek error = kthread_create(g_raid3_worker, sc, &sc->sc_worker, 0, 0, 27862d1661a5SPawel Jakub Dawidek "g_raid3 %s", md->md_name); 27872d1661a5SPawel Jakub Dawidek if (error != 0) { 27882d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Cannot create kernel thread for %s.", 27892d1661a5SPawel Jakub Dawidek sc->sc_name); 27902d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_64k); 27912d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_16k); 27922d1661a5SPawel Jakub Dawidek uma_zdestroy(sc->sc_zone_4k); 27932d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_sync.ds_geom); 27942d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_events_mtx); 27952d1661a5SPawel Jakub Dawidek mtx_destroy(&sc->sc_queue_mtx); 27962d1661a5SPawel Jakub Dawidek g_destroy_geom(sc->sc_geom); 27972d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 27982d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 27992d1661a5SPawel Jakub Dawidek return (NULL); 28002d1661a5SPawel Jakub Dawidek } 28012d1661a5SPawel Jakub Dawidek 28022d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s created (id=%u).", sc->sc_name, sc->sc_id); 28032d1661a5SPawel Jakub Dawidek 28042d1661a5SPawel Jakub Dawidek /* 28052d1661a5SPawel Jakub Dawidek * Run timeout. 28062d1661a5SPawel Jakub Dawidek */ 28072d1661a5SPawel Jakub Dawidek timeout = atomic_load_acq_int(&g_raid3_timeout); 28082d1661a5SPawel Jakub Dawidek callout_reset(&sc->sc_callout, timeout * hz, g_raid3_go, sc); 28092d1661a5SPawel Jakub Dawidek return (sc->sc_geom); 28102d1661a5SPawel Jakub Dawidek } 28112d1661a5SPawel Jakub Dawidek 28122d1661a5SPawel Jakub Dawidek int 28132d1661a5SPawel Jakub Dawidek g_raid3_destroy(struct g_raid3_softc *sc, boolean_t force) 28142d1661a5SPawel Jakub Dawidek { 28152d1661a5SPawel Jakub Dawidek struct g_provider *pp; 28162d1661a5SPawel Jakub Dawidek 28172d1661a5SPawel Jakub Dawidek g_topology_assert(); 28182d1661a5SPawel Jakub Dawidek 28192d1661a5SPawel Jakub Dawidek if (sc == NULL) 28202d1661a5SPawel Jakub Dawidek return (ENXIO); 28212d1661a5SPawel Jakub Dawidek pp = sc->sc_provider; 28222d1661a5SPawel Jakub Dawidek if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 28232d1661a5SPawel Jakub Dawidek if (force) { 28244485f000SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Device %s is still open, so it " 28252d1661a5SPawel Jakub Dawidek "can't be definitely removed.", pp->name); 28262d1661a5SPawel Jakub Dawidek } else { 28272d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, 28282d1661a5SPawel Jakub Dawidek "Device %s is still open (r%dw%de%d).", pp->name, 28292d1661a5SPawel Jakub Dawidek pp->acr, pp->acw, pp->ace); 28302d1661a5SPawel Jakub Dawidek return (EBUSY); 28312d1661a5SPawel Jakub Dawidek } 28322d1661a5SPawel Jakub Dawidek } 28332d1661a5SPawel Jakub Dawidek 28342d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_DESTROY; 28352d1661a5SPawel Jakub Dawidek sc->sc_flags |= G_RAID3_DEVICE_FLAG_WAIT; 28362d1661a5SPawel Jakub Dawidek g_topology_unlock(); 28372d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Waking up %p.", __func__, sc); 28382d1661a5SPawel Jakub Dawidek mtx_lock(&sc->sc_queue_mtx); 28392d1661a5SPawel Jakub Dawidek wakeup(sc); 28402d1661a5SPawel Jakub Dawidek wakeup(&sc->sc_queue); 28412d1661a5SPawel Jakub Dawidek mtx_unlock(&sc->sc_queue_mtx); 28422d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Sleeping %p.", __func__, &sc->sc_worker); 28432d1661a5SPawel Jakub Dawidek while (sc->sc_worker != NULL) 28442d1661a5SPawel Jakub Dawidek tsleep(&sc->sc_worker, PRIBIO, "r3:destroy", hz / 5); 28452d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(4, "%s: Woken up %p.", __func__, &sc->sc_worker); 28462d1661a5SPawel Jakub Dawidek g_topology_lock(); 28472d1661a5SPawel Jakub Dawidek g_raid3_destroy_device(sc); 28482d1661a5SPawel Jakub Dawidek free(sc->sc_disks, M_RAID3); 28492d1661a5SPawel Jakub Dawidek free(sc, M_RAID3); 28502d1661a5SPawel Jakub Dawidek return (0); 28512d1661a5SPawel Jakub Dawidek } 28522d1661a5SPawel Jakub Dawidek 28532d1661a5SPawel Jakub Dawidek static void 28542d1661a5SPawel Jakub Dawidek g_raid3_taste_orphan(struct g_consumer *cp) 28552d1661a5SPawel Jakub Dawidek { 28562d1661a5SPawel Jakub Dawidek 28572d1661a5SPawel Jakub Dawidek KASSERT(1 == 0, ("%s called while tasting %s.", __func__, 28582d1661a5SPawel Jakub Dawidek cp->provider->name)); 28592d1661a5SPawel Jakub Dawidek } 28602d1661a5SPawel Jakub Dawidek 28612d1661a5SPawel Jakub Dawidek static struct g_geom * 28622d1661a5SPawel Jakub Dawidek g_raid3_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) 28632d1661a5SPawel Jakub Dawidek { 28642d1661a5SPawel Jakub Dawidek struct g_raid3_metadata md; 28652d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 28662d1661a5SPawel Jakub Dawidek struct g_consumer *cp; 28672d1661a5SPawel Jakub Dawidek struct g_geom *gp; 28682d1661a5SPawel Jakub Dawidek int error; 28692d1661a5SPawel Jakub Dawidek 28702d1661a5SPawel Jakub Dawidek g_topology_assert(); 28712d1661a5SPawel Jakub Dawidek g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name); 28722d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(2, "Tasting %s.", pp->name); 28732d1661a5SPawel Jakub Dawidek 28742d1661a5SPawel Jakub Dawidek gp = g_new_geomf(mp, "raid3:taste"); 28752d1661a5SPawel Jakub Dawidek /* This orphan function should be never called. */ 28762d1661a5SPawel Jakub Dawidek gp->orphan = g_raid3_taste_orphan; 28772d1661a5SPawel Jakub Dawidek cp = g_new_consumer(gp); 28782d1661a5SPawel Jakub Dawidek g_attach(cp, pp); 28792d1661a5SPawel Jakub Dawidek error = g_raid3_read_metadata(cp, &md); 28802d1661a5SPawel Jakub Dawidek g_detach(cp); 28812d1661a5SPawel Jakub Dawidek g_destroy_consumer(cp); 28822d1661a5SPawel Jakub Dawidek g_destroy_geom(gp); 28832d1661a5SPawel Jakub Dawidek if (error != 0) 28842d1661a5SPawel Jakub Dawidek return (NULL); 28852d1661a5SPawel Jakub Dawidek gp = NULL; 28862d1661a5SPawel Jakub Dawidek 28872d1661a5SPawel Jakub Dawidek if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0) 28882d1661a5SPawel Jakub Dawidek return (NULL); 28892d1661a5SPawel Jakub Dawidek if (g_raid3_debug >= 2) 28902d1661a5SPawel Jakub Dawidek raid3_metadata_dump(&md); 28912d1661a5SPawel Jakub Dawidek 28922d1661a5SPawel Jakub Dawidek /* 28932d1661a5SPawel Jakub Dawidek * Let's check if device already exists. 28942d1661a5SPawel Jakub Dawidek */ 289545d5e85aSPawel Jakub Dawidek sc = NULL; 28962d1661a5SPawel Jakub Dawidek LIST_FOREACH(gp, &mp->geom, geom) { 28972d1661a5SPawel Jakub Dawidek sc = gp->softc; 28982d1661a5SPawel Jakub Dawidek if (sc == NULL) 28992d1661a5SPawel Jakub Dawidek continue; 29002d1661a5SPawel Jakub Dawidek if (sc->sc_sync.ds_geom == gp) 29012d1661a5SPawel Jakub Dawidek continue; 29022d1661a5SPawel Jakub Dawidek if (strcmp(md.md_name, sc->sc_name) != 0) 29032d1661a5SPawel Jakub Dawidek continue; 29042d1661a5SPawel Jakub Dawidek if (md.md_id != sc->sc_id) { 29052d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Device %s already configured.", 29062d1661a5SPawel Jakub Dawidek sc->sc_name); 29072d1661a5SPawel Jakub Dawidek return (NULL); 29082d1661a5SPawel Jakub Dawidek } 29092d1661a5SPawel Jakub Dawidek break; 29102d1661a5SPawel Jakub Dawidek } 29112d1661a5SPawel Jakub Dawidek if (gp == NULL) { 29122d1661a5SPawel Jakub Dawidek gp = g_raid3_create(mp, &md); 29132d1661a5SPawel Jakub Dawidek if (gp == NULL) { 29142d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot create device %s.", 29152d1661a5SPawel Jakub Dawidek md.md_name); 29162d1661a5SPawel Jakub Dawidek return (NULL); 29172d1661a5SPawel Jakub Dawidek } 29182d1661a5SPawel Jakub Dawidek sc = gp->softc; 29192d1661a5SPawel Jakub Dawidek } 29202d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name); 29212d1661a5SPawel Jakub Dawidek error = g_raid3_add_disk(sc, pp, &md); 29222d1661a5SPawel Jakub Dawidek if (error != 0) { 29232d1661a5SPawel Jakub Dawidek G_RAID3_DEBUG(0, "Cannot add disk %s to %s (error=%d).", 29242d1661a5SPawel Jakub Dawidek pp->name, gp->name, error); 29252d1661a5SPawel Jakub Dawidek if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_NODISK) == 29262d1661a5SPawel Jakub Dawidek sc->sc_ndisks) { 29272d1661a5SPawel Jakub Dawidek g_raid3_destroy(sc, 1); 29282d1661a5SPawel Jakub Dawidek } 29292d1661a5SPawel Jakub Dawidek return (NULL); 29302d1661a5SPawel Jakub Dawidek } 29312d1661a5SPawel Jakub Dawidek return (gp); 29322d1661a5SPawel Jakub Dawidek } 29332d1661a5SPawel Jakub Dawidek 29342d1661a5SPawel Jakub Dawidek static int 29352d1661a5SPawel Jakub Dawidek g_raid3_destroy_geom(struct gctl_req *req __unused, struct g_class *mp __unused, 29362d1661a5SPawel Jakub Dawidek struct g_geom *gp) 29372d1661a5SPawel Jakub Dawidek { 29382d1661a5SPawel Jakub Dawidek 29392d1661a5SPawel Jakub Dawidek return (g_raid3_destroy(gp->softc, 0)); 29402d1661a5SPawel Jakub Dawidek } 29412d1661a5SPawel Jakub Dawidek 29422d1661a5SPawel Jakub Dawidek static void 29432d1661a5SPawel Jakub Dawidek g_raid3_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 29442d1661a5SPawel Jakub Dawidek struct g_consumer *cp, struct g_provider *pp) 29452d1661a5SPawel Jakub Dawidek { 29462d1661a5SPawel Jakub Dawidek struct g_raid3_softc *sc; 29472d1661a5SPawel Jakub Dawidek 29482d1661a5SPawel Jakub Dawidek g_topology_assert(); 29492d1661a5SPawel Jakub Dawidek 29502d1661a5SPawel Jakub Dawidek sc = gp->softc; 29512d1661a5SPawel Jakub Dawidek if (sc == NULL) 29522d1661a5SPawel Jakub Dawidek return; 29532d1661a5SPawel Jakub Dawidek /* Skip synchronization geom. */ 29542d1661a5SPawel Jakub Dawidek if (gp == sc->sc_sync.ds_geom) 29552d1661a5SPawel Jakub Dawidek return; 29562d1661a5SPawel Jakub Dawidek if (pp != NULL) { 29572d1661a5SPawel Jakub Dawidek /* Nothing here. */ 29582d1661a5SPawel Jakub Dawidek } else if (cp != NULL) { 29592d1661a5SPawel Jakub Dawidek struct g_raid3_disk *disk; 29602d1661a5SPawel Jakub Dawidek 29612d1661a5SPawel Jakub Dawidek disk = cp->private; 29622d1661a5SPawel Jakub Dawidek if (disk == NULL) 29632d1661a5SPawel Jakub Dawidek return; 29642d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Type>", indent); 29652d1661a5SPawel Jakub Dawidek if (disk->d_no == sc->sc_ndisks - 1) 29662d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "PARITY"); 29672d1661a5SPawel Jakub Dawidek else 29682d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "DATA"); 29692d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Type>\n"); 29702d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Number>%u</Number>\n", indent, 29712d1661a5SPawel Jakub Dawidek (u_int)disk->d_no); 29722d1661a5SPawel Jakub Dawidek if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING) { 29732d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Synchronized>", indent); 29742d1661a5SPawel Jakub Dawidek if (disk->d_sync.ds_offset_done == 0) 29752d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "0%%"); 29762d1661a5SPawel Jakub Dawidek else { 29772d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%u%%", 29782d1661a5SPawel Jakub Dawidek (u_int)((disk->d_sync.ds_offset_done * 100) / 2979c0d68b6eSPawel Jakub Dawidek (sc->sc_mediasize / (sc->sc_ndisks - 1)))); 29802d1661a5SPawel Jakub Dawidek } 29812d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Synchronized>\n"); 29822d1661a5SPawel Jakub Dawidek } 29832d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, 29842d1661a5SPawel Jakub Dawidek disk->d_sync.ds_syncid); 2985a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, disk->d_genid); 29862d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 29872d1661a5SPawel Jakub Dawidek if (disk->d_flags == 0) 29882d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 29892d1661a5SPawel Jakub Dawidek else { 29902d1661a5SPawel Jakub Dawidek int first = 1; 29912d1661a5SPawel Jakub Dawidek 29922d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 29932d1661a5SPawel Jakub Dawidek if ((disk->d_flags & (flag)) != 0) { \ 29942d1661a5SPawel Jakub Dawidek if (!first) \ 29952d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 29962d1661a5SPawel Jakub Dawidek else \ 29972d1661a5SPawel Jakub Dawidek first = 0; \ 29982d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 29992d1661a5SPawel Jakub Dawidek } \ 30002d1661a5SPawel Jakub Dawidek } while (0) 30012d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_DIRTY, "DIRTY"); 30022d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_HARDCODED, "HARDCODED"); 30032d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_SYNCHRONIZING, 30042d1661a5SPawel Jakub Dawidek "SYNCHRONIZING"); 30052d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DISK_FLAG_FORCE_SYNC, "FORCE_SYNC"); 30062d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 30072d1661a5SPawel Jakub Dawidek } 30082d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 30092d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 30102d1661a5SPawel Jakub Dawidek g_raid3_disk_state2str(disk->d_state)); 30112d1661a5SPawel Jakub Dawidek } else { 30122d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id); 30132d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<SyncID>%u</SyncID>\n", indent, sc->sc_syncid); 3014a245a548SPawel Jakub Dawidek sbuf_printf(sb, "%s<GenID>%u</GenID>\n", indent, sc->sc_genid); 30152d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Flags>", indent); 30162d1661a5SPawel Jakub Dawidek if (sc->sc_flags == 0) 30172d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "NONE"); 30182d1661a5SPawel Jakub Dawidek else { 30192d1661a5SPawel Jakub Dawidek int first = 1; 30202d1661a5SPawel Jakub Dawidek 30212d1661a5SPawel Jakub Dawidek #define ADD_FLAG(flag, name) do { \ 30222d1661a5SPawel Jakub Dawidek if ((sc->sc_flags & (flag)) != 0) { \ 30232d1661a5SPawel Jakub Dawidek if (!first) \ 30242d1661a5SPawel Jakub Dawidek sbuf_printf(sb, ", "); \ 30252d1661a5SPawel Jakub Dawidek else \ 30262d1661a5SPawel Jakub Dawidek first = 0; \ 30272d1661a5SPawel Jakub Dawidek sbuf_printf(sb, name); \ 30282d1661a5SPawel Jakub Dawidek } \ 30292d1661a5SPawel Jakub Dawidek } while (0) 30302d1661a5SPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_NOAUTOSYNC, "NOAUTOSYNC"); 3031f5a2f7feSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_ROUND_ROBIN, 3032f5a2f7feSPawel Jakub Dawidek "ROUND-ROBIN"); 3033dba915cfSPawel Jakub Dawidek ADD_FLAG(G_RAID3_DEVICE_FLAG_VERIFY, "VERIFY"); 30342d1661a5SPawel Jakub Dawidek #undef ADD_FLAG 30352d1661a5SPawel Jakub Dawidek } 30362d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "</Flags>\n"); 30372d1661a5SPawel Jakub Dawidek sbuf_printf(sb, "%s<Components>%u</Components>\n", indent, 30382d1661a5SPawel Jakub Dawidek sc->sc_ndisks); 303928b31df7SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>%s</State>\n", indent, 304028b31df7SPawel Jakub Dawidek g_raid3_device_state2str(sc->sc_state)); 30412d1661a5SPawel Jakub Dawidek } 30422d1661a5SPawel Jakub Dawidek } 30432d1661a5SPawel Jakub Dawidek 30449da3072cSPawel Jakub Dawidek static void 30459da3072cSPawel Jakub Dawidek g_raid3_shutdown(void *arg, int howto) 30469da3072cSPawel Jakub Dawidek { 30479da3072cSPawel Jakub Dawidek struct g_class *mp; 30489da3072cSPawel Jakub Dawidek struct g_geom *gp, *gp2; 30499da3072cSPawel Jakub Dawidek 30509da3072cSPawel Jakub Dawidek mp = arg; 3051fdc3c6ceSPawel Jakub Dawidek DROP_GIANT(); 30529da3072cSPawel Jakub Dawidek g_topology_lock(); 30539da3072cSPawel Jakub Dawidek LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) { 30549da3072cSPawel Jakub Dawidek if (gp->softc == NULL) 30559da3072cSPawel Jakub Dawidek continue; 30569da3072cSPawel Jakub Dawidek g_raid3_destroy(gp->softc, 1); 30579da3072cSPawel Jakub Dawidek } 30589da3072cSPawel Jakub Dawidek g_topology_unlock(); 3059fdc3c6ceSPawel Jakub Dawidek PICKUP_GIANT(); 30609da3072cSPawel Jakub Dawidek #if 0 30619da3072cSPawel Jakub Dawidek tsleep(&gp, PRIBIO, "r3:shutdown", hz * 20); 30629da3072cSPawel Jakub Dawidek #endif 30639da3072cSPawel Jakub Dawidek } 30649da3072cSPawel Jakub Dawidek 30659da3072cSPawel Jakub Dawidek static void 30669da3072cSPawel Jakub Dawidek g_raid3_init(struct g_class *mp) 30679da3072cSPawel Jakub Dawidek { 30689da3072cSPawel Jakub Dawidek 30699da3072cSPawel Jakub Dawidek g_raid3_ehtag = EVENTHANDLER_REGISTER(shutdown_post_sync, 30709da3072cSPawel Jakub Dawidek g_raid3_shutdown, mp, SHUTDOWN_PRI_FIRST); 30719da3072cSPawel Jakub Dawidek if (g_raid3_ehtag == NULL) 30729da3072cSPawel Jakub Dawidek G_RAID3_DEBUG(0, "Warning! Cannot register shutdown event."); 30739da3072cSPawel Jakub Dawidek } 30749da3072cSPawel Jakub Dawidek 30759da3072cSPawel Jakub Dawidek static void 30769da3072cSPawel Jakub Dawidek g_raid3_fini(struct g_class *mp) 30779da3072cSPawel Jakub Dawidek { 30789da3072cSPawel Jakub Dawidek 30799da3072cSPawel Jakub Dawidek if (g_raid3_ehtag == NULL) 30809da3072cSPawel Jakub Dawidek return; 30819da3072cSPawel Jakub Dawidek EVENTHANDLER_DEREGISTER(shutdown_post_sync, g_raid3_ehtag); 30829da3072cSPawel Jakub Dawidek } 30839da3072cSPawel Jakub Dawidek 30842d1661a5SPawel Jakub Dawidek DECLARE_GEOM_CLASS(g_raid3_class, g_raid3); 3085