The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/geom/raid/md_sii.c

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    1 /*-
    2  * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org>
    3  * Copyright (c) 2000 - 2008 Søren Schmidt <sos@FreeBSD.org>
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: releng/11.2/sys/geom/raid/md_sii.c 298698 2016-04-27 15:10:40Z pfg $");
   30 
   31 #include <sys/param.h>
   32 #include <sys/bio.h>
   33 #include <sys/endian.h>
   34 #include <sys/kernel.h>
   35 #include <sys/kobj.h>
   36 #include <sys/limits.h>
   37 #include <sys/lock.h>
   38 #include <sys/malloc.h>
   39 #include <sys/mutex.h>
   40 #include <sys/systm.h>
   41 #include <sys/taskqueue.h>
   42 #include <geom/geom.h>
   43 #include "geom/raid/g_raid.h"
   44 #include "g_raid_md_if.h"
   45 
   46 static MALLOC_DEFINE(M_MD_SII, "md_sii_data", "GEOM_RAID SiI metadata");
   47 
   48 struct sii_raid_conf {
   49         uint16_t        ata_params_00_53[54];
   50         uint64_t        total_sectors;          /* 54 - 57 */
   51         uint16_t        ata_params_58_81[72];
   52         uint16_t        product_id;             /* 130 */
   53         uint16_t        vendor_id;              /* 131 */
   54         uint16_t        version_minor;          /* 132 */
   55         uint16_t        version_major;          /* 133 */
   56         uint8_t         timestamp[6];           /* 134 - 136 */
   57         uint16_t        strip_sectors;          /* 137 */
   58         uint16_t        dummy_2;
   59         uint8_t         disk_number;            /* 139 */
   60         uint8_t         type;
   61 #define SII_T_RAID0             0x00
   62 #define SII_T_RAID1             0x01
   63 #define SII_T_RAID01            0x02
   64 #define SII_T_SPARE             0x03
   65 #define SII_T_CONCAT            0x04
   66 #define SII_T_RAID5             0x10
   67 #define SII_T_RESERVED          0xfd
   68 #define SII_T_JBOD              0xff
   69 
   70         uint8_t         raid0_disks;            /* 140 */
   71         uint8_t         raid0_ident;
   72         uint8_t         raid1_disks;            /* 141 */
   73         uint8_t         raid1_ident;
   74         uint64_t        rebuild_lba;            /* 142 - 145 */
   75         uint32_t        generation;             /* 146 - 147 */
   76         uint8_t         disk_status;            /* 148 */
   77 #define SII_S_CURRENT           0x01
   78 #define SII_S_REBUILD           0x02
   79 #define SII_S_DROPPED           0x03
   80 #define SII_S_REMOVED           0x04
   81 
   82         uint8_t         raid_status;
   83 #define SII_S_ONLINE            0x01
   84 #define SII_S_AVAILABLE         0x02
   85 
   86         uint8_t         raid_location;          /* 149 */
   87         uint8_t         disk_location;
   88         uint8_t         auto_rebuild;           /* 150 */
   89 #define SII_R_REBUILD           0x00
   90 #define SII_R_NOREBUILD         0xff
   91 
   92         uint8_t         dummy_3;
   93         uint8_t         name[16];               /* 151 - 158 */
   94         uint16_t        checksum;               /* 159 */
   95         uint16_t        ata_params_160_255[96];
   96 } __packed;
   97 
   98 struct g_raid_md_sii_perdisk {
   99         struct sii_raid_conf    *pd_meta;
  100         int                      pd_disk_pos;
  101         off_t                    pd_disk_size;
  102 };
  103 
  104 struct g_raid_md_sii_object {
  105         struct g_raid_md_object  mdio_base;
  106         uint8_t                  mdio_timestamp[6];
  107         uint8_t                  mdio_location;
  108         uint32_t                 mdio_generation;
  109         struct sii_raid_conf    *mdio_meta;
  110         struct callout           mdio_start_co; /* STARTING state timer. */
  111         int                      mdio_total_disks;
  112         int                      mdio_disks_present;
  113         int                      mdio_started;
  114         int                      mdio_incomplete;
  115         struct root_hold_token  *mdio_rootmount; /* Root mount delay token. */
  116 };
  117 
  118 static g_raid_md_create_t g_raid_md_create_sii;
  119 static g_raid_md_taste_t g_raid_md_taste_sii;
  120 static g_raid_md_event_t g_raid_md_event_sii;
  121 static g_raid_md_ctl_t g_raid_md_ctl_sii;
  122 static g_raid_md_write_t g_raid_md_write_sii;
  123 static g_raid_md_fail_disk_t g_raid_md_fail_disk_sii;
  124 static g_raid_md_free_disk_t g_raid_md_free_disk_sii;
  125 static g_raid_md_free_t g_raid_md_free_sii;
  126 
  127 static kobj_method_t g_raid_md_sii_methods[] = {
  128         KOBJMETHOD(g_raid_md_create,    g_raid_md_create_sii),
  129         KOBJMETHOD(g_raid_md_taste,     g_raid_md_taste_sii),
  130         KOBJMETHOD(g_raid_md_event,     g_raid_md_event_sii),
  131         KOBJMETHOD(g_raid_md_ctl,       g_raid_md_ctl_sii),
  132         KOBJMETHOD(g_raid_md_write,     g_raid_md_write_sii),
  133         KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_sii),
  134         KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_sii),
  135         KOBJMETHOD(g_raid_md_free,      g_raid_md_free_sii),
  136         { 0, 0 }
  137 };
  138 
  139 static struct g_raid_md_class g_raid_md_sii_class = {
  140         "SiI",
  141         g_raid_md_sii_methods,
  142         sizeof(struct g_raid_md_sii_object),
  143         .mdc_enable = 1,
  144         .mdc_priority = 100
  145 };
  146 
  147 static void
  148 g_raid_md_sii_print(struct sii_raid_conf *meta)
  149 {
  150 
  151         if (g_raid_debug < 1)
  152                 return;
  153 
  154         printf("********* ATA SiI RAID Metadata *********\n");
  155         printf("total_sectors       %llu\n",
  156             (long long unsigned)meta->total_sectors);
  157         printf("product_id          0x%04x\n", meta->product_id);
  158         printf("vendor_id           0x%04x\n", meta->vendor_id);
  159         printf("version_minor       0x%04x\n", meta->version_minor);
  160         printf("version_major       0x%04x\n", meta->version_major);
  161         printf("timestamp           0x%02x%02x%02x%02x%02x%02x\n",
  162             meta->timestamp[5], meta->timestamp[4], meta->timestamp[3],
  163             meta->timestamp[2], meta->timestamp[1], meta->timestamp[0]);
  164         printf("strip_sectors       %d\n", meta->strip_sectors);
  165         printf("disk_number         %d\n", meta->disk_number);
  166         printf("type                0x%02x\n", meta->type);
  167         printf("raid0_disks         %d\n", meta->raid0_disks);
  168         printf("raid0_ident         %d\n", meta->raid0_ident);
  169         printf("raid1_disks         %d\n", meta->raid1_disks);
  170         printf("raid1_ident         %d\n", meta->raid1_ident);
  171         printf("rebuild_lba         %llu\n",
  172             (long long unsigned)meta->rebuild_lba);
  173         printf("generation          %d\n", meta->generation);
  174         printf("disk_status         %d\n", meta->disk_status);
  175         printf("raid_status         %d\n", meta->raid_status);
  176         printf("raid_location       %d\n", meta->raid_location);
  177         printf("disk_location       %d\n", meta->disk_location);
  178         printf("auto_rebuild        %d\n", meta->auto_rebuild);
  179         printf("name                <%.16s>\n", meta->name);
  180         printf("checksum            0x%04x\n", meta->checksum);
  181         printf("=================================================\n");
  182 }
  183 
  184 static struct sii_raid_conf *
  185 sii_meta_copy(struct sii_raid_conf *meta)
  186 {
  187         struct sii_raid_conf *nmeta;
  188 
  189         nmeta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK);
  190         memcpy(nmeta, meta, sizeof(*meta));
  191         return (nmeta);
  192 }
  193 
  194 static int
  195 sii_meta_total_disks(struct sii_raid_conf *meta)
  196 {
  197 
  198         switch (meta->type) {
  199         case SII_T_RAID0:
  200         case SII_T_RAID5:
  201         case SII_T_CONCAT:
  202                 return (meta->raid0_disks);
  203         case SII_T_RAID1:
  204                 return (meta->raid1_disks);
  205         case SII_T_RAID01:
  206                 return (meta->raid0_disks * meta->raid1_disks);
  207         case SII_T_SPARE:
  208         case SII_T_JBOD:
  209                 return (1);
  210         }
  211         return (0);
  212 }
  213 
  214 static int
  215 sii_meta_disk_pos(struct sii_raid_conf *meta, struct sii_raid_conf *pdmeta)
  216 {
  217 
  218         if (pdmeta->type == SII_T_SPARE)
  219                 return (-3);
  220 
  221         if (memcmp(&meta->timestamp, &pdmeta->timestamp, 6) != 0)
  222                 return (-1);
  223 
  224         switch (pdmeta->type) {
  225         case SII_T_RAID0:
  226         case SII_T_RAID1:
  227         case SII_T_RAID5:
  228         case SII_T_CONCAT:
  229                 return (pdmeta->disk_number);
  230         case SII_T_RAID01:
  231                 return (pdmeta->raid1_ident * pdmeta->raid1_disks +
  232                     pdmeta->raid0_ident);
  233         case SII_T_JBOD:
  234                 return (0);
  235         }
  236         return (-1);
  237 }
  238 
  239 static void
  240 sii_meta_get_name(struct sii_raid_conf *meta, char *buf)
  241 {
  242         int i;
  243 
  244         strncpy(buf, meta->name, 16);
  245         buf[16] = 0;
  246         for (i = 15; i >= 0; i--) {
  247                 if (buf[i] > 0x20)
  248                         break;
  249                 buf[i] = 0;
  250         }
  251 }
  252 
  253 static void
  254 sii_meta_put_name(struct sii_raid_conf *meta, char *buf)
  255 {
  256 
  257         memset(meta->name, 0x20, 16);
  258         memcpy(meta->name, buf, MIN(strlen(buf), 16));
  259 }
  260 
  261 static struct sii_raid_conf *
  262 sii_meta_read(struct g_consumer *cp)
  263 {
  264         struct g_provider *pp;
  265         struct sii_raid_conf *meta;
  266         char *buf;
  267         int error, i;
  268         uint16_t checksum, *ptr;
  269 
  270         pp = cp->provider;
  271 
  272         /* Read the anchor sector. */
  273         buf = g_read_data(cp,
  274             pp->mediasize - pp->sectorsize, pp->sectorsize, &error);
  275         if (buf == NULL) {
  276                 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).",
  277                     pp->name, error);
  278                 return (NULL);
  279         }
  280         meta = (struct sii_raid_conf *)buf;
  281 
  282         /* Check vendor ID. */
  283         if (meta->vendor_id != 0x1095) {
  284                 G_RAID_DEBUG(1, "SiI vendor ID check failed on %s (0x%04x)",
  285                     pp->name, meta->vendor_id);
  286                 g_free(buf);
  287                 return (NULL);
  288         }
  289 
  290         /* Check metadata major version. */
  291         if (meta->version_major != 2) {
  292                 G_RAID_DEBUG(1, "SiI version check failed on %s (%d.%d)",
  293                     pp->name, meta->version_major, meta->version_minor);
  294                 g_free(buf);
  295                 return (NULL);
  296         }
  297         meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK);
  298         memcpy(meta, buf, min(sizeof(*meta), pp->sectorsize));
  299         g_free(buf);
  300 
  301         /* Check metadata checksum. */
  302         for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i <= 159; i++)
  303                 checksum += *ptr++;
  304         if (checksum != 0) {
  305                 G_RAID_DEBUG(1, "SiI checksum check failed on %s", pp->name);
  306                 free(meta, M_MD_SII);
  307                 return (NULL);
  308         }
  309 
  310         /* Check raid type. */
  311         if (meta->type != SII_T_RAID0 && meta->type != SII_T_RAID1 &&
  312             meta->type != SII_T_RAID01 && meta->type != SII_T_SPARE &&
  313             meta->type != SII_T_RAID5 && meta->type != SII_T_CONCAT &&
  314             meta->type != SII_T_JBOD) {
  315                 G_RAID_DEBUG(1, "SiI unknown RAID level on %s (0x%02x)",
  316                     pp->name, meta->type);
  317                 free(meta, M_MD_SII);
  318                 return (NULL);
  319         }
  320 
  321         return (meta);
  322 }
  323 
  324 static int
  325 sii_meta_write(struct g_consumer *cp, struct sii_raid_conf *meta)
  326 {
  327         struct g_provider *pp;
  328         char *buf;
  329         int error, i;
  330         uint16_t checksum, *ptr;
  331 
  332         pp = cp->provider;
  333 
  334         /* Recalculate checksum for case if metadata were changed. */
  335         meta->checksum = 0;
  336         for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i < 159; i++)
  337                 checksum += *ptr++;
  338         meta->checksum -= checksum;
  339 
  340         /* Create and fill buffer. */
  341         buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO);
  342         memcpy(buf, meta, sizeof(*meta));
  343 
  344         /* Write 4 copies of metadata. */
  345         for (i = 0; i < 4; i++) {
  346                 error = g_write_data(cp,
  347                     pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)),
  348                     buf, pp->sectorsize);
  349                 if (error != 0) {
  350                         G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
  351                             pp->name, error);
  352                         break;
  353                 }
  354         }
  355 
  356         free(buf, M_MD_SII);
  357         return (error);
  358 }
  359 
  360 static int
  361 sii_meta_erase(struct g_consumer *cp)
  362 {
  363         struct g_provider *pp;
  364         char *buf;
  365         int error, i;
  366 
  367         pp = cp->provider;
  368         buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO);
  369         /* Write 4 copies of metadata. */
  370         for (i = 0; i < 4; i++) {
  371                 error = g_write_data(cp,
  372                     pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)),
  373                     buf, pp->sectorsize);
  374                 if (error != 0) {
  375                         G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
  376                             pp->name, error);
  377                 }
  378         }
  379         free(buf, M_MD_SII);
  380         return (error);
  381 }
  382 
  383 static int
  384 sii_meta_write_spare(struct g_consumer *cp)
  385 {
  386         struct sii_raid_conf *meta;
  387         int error;
  388 
  389         meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO);
  390         meta->total_sectors = cp->provider->mediasize /
  391             cp->provider->sectorsize - 0x800;
  392         meta->vendor_id = 0x1095;
  393         meta->version_minor = 0;
  394         meta->version_major = 2;
  395         meta->timestamp[0] = arc4random();
  396         meta->timestamp[1] = arc4random();
  397         meta->timestamp[2] = arc4random();
  398         meta->timestamp[3] = arc4random();
  399         meta->timestamp[4] = arc4random();
  400         meta->timestamp[5] = arc4random();
  401         meta->type = SII_T_SPARE;
  402         meta->generation = 1;
  403         meta->raid1_ident = 0xff;
  404         meta->raid_location = arc4random();
  405         error = sii_meta_write(cp, meta);
  406         free(meta, M_MD_SII);
  407         return (error);
  408 }
  409 
  410 static struct g_raid_disk *
  411 g_raid_md_sii_get_disk(struct g_raid_softc *sc, int id)
  412 {
  413         struct g_raid_disk      *disk;
  414         struct g_raid_md_sii_perdisk *pd;
  415 
  416         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
  417                 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data;
  418                 if (pd->pd_disk_pos == id)
  419                         break;
  420         }
  421         return (disk);
  422 }
  423 
  424 static int
  425 g_raid_md_sii_supported(int level, int qual, int disks, int force)
  426 {
  427 
  428         if (disks > 8)
  429                 return (0);
  430         switch (level) {
  431         case G_RAID_VOLUME_RL_RAID0:
  432                 if (disks < 1)
  433                         return (0);
  434                 if (!force && (disks < 2 || disks > 6))
  435                         return (0);
  436                 break;
  437         case G_RAID_VOLUME_RL_RAID1:
  438                 if (disks < 1)
  439                         return (0);
  440                 if (!force && (disks != 2))
  441                         return (0);
  442                 break;
  443         case G_RAID_VOLUME_RL_RAID1E:
  444                 if (disks < 2)
  445                         return (0);
  446                 if (disks % 2 != 0)
  447                         return (0);
  448                 if (!force && (disks < 4))
  449                         return (0);
  450                 break;
  451         case G_RAID_VOLUME_RL_SINGLE:
  452                 if (disks != 1)
  453                         return (0);
  454                 break;
  455         case G_RAID_VOLUME_RL_CONCAT:
  456                 if (disks < 2)
  457                         return (0);
  458                 break;
  459         case G_RAID_VOLUME_RL_RAID5:
  460                 if (disks < 3)
  461                         return (0);
  462                 if (qual != G_RAID_VOLUME_RLQ_R5LS)
  463                         return (0);
  464                 break;
  465         default:
  466                 return (0);
  467         }
  468         if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE)
  469                 return (0);
  470         return (1);
  471 }
  472 
  473 static int
  474 g_raid_md_sii_start_disk(struct g_raid_disk *disk)
  475 {
  476         struct g_raid_softc *sc;
  477         struct g_raid_subdisk *sd, *tmpsd;
  478         struct g_raid_disk *olddisk, *tmpdisk;
  479         struct g_raid_md_object *md;
  480         struct g_raid_md_sii_object *mdi;
  481         struct g_raid_md_sii_perdisk *pd, *oldpd;
  482         struct sii_raid_conf *meta;
  483         int disk_pos, resurrection = 0;
  484 
  485         sc = disk->d_softc;
  486         md = sc->sc_md;
  487         mdi = (struct g_raid_md_sii_object *)md;
  488         meta = mdi->mdio_meta;
  489         pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data;
  490         olddisk = NULL;
  491 
  492         /* Find disk position in metadata by it's serial. */
  493         if (pd->pd_meta != NULL)
  494                 disk_pos = sii_meta_disk_pos(meta, pd->pd_meta);
  495         else
  496                 disk_pos = -3;
  497         if (disk_pos < 0) {
  498                 G_RAID_DEBUG1(1, sc, "Unknown, probably new or stale disk");
  499                 /* If we are in the start process, that's all for now. */
  500                 if (!mdi->mdio_started)
  501                         goto nofit;
  502                 /*
  503                  * If we have already started - try to get use of the disk.
  504                  * Try to replace OFFLINE disks first, then FAILED.
  505                  */
  506                 TAILQ_FOREACH(tmpdisk, &sc->sc_disks, d_next) {
  507                         if (tmpdisk->d_state != G_RAID_DISK_S_OFFLINE &&
  508                             tmpdisk->d_state != G_RAID_DISK_S_FAILED)
  509                                 continue;
  510                         /* Make sure this disk is big enough. */
  511                         TAILQ_FOREACH(sd, &tmpdisk->d_subdisks, sd_next) {
  512                                 if (sd->sd_offset + sd->sd_size + 512 >
  513                                     pd->pd_disk_size) {
  514                                         G_RAID_DEBUG1(1, sc,
  515                                             "Disk too small (%ju < %ju)",
  516                                             pd->pd_disk_size,
  517                                             sd->sd_offset + sd->sd_size + 512);
  518                                         break;
  519                                 }
  520                         }
  521                         if (sd != NULL)
  522                                 continue;
  523                         if (tmpdisk->d_state == G_RAID_DISK_S_OFFLINE) {
  524                                 olddisk = tmpdisk;
  525                                 break;
  526                         } else if (olddisk == NULL)
  527                                 olddisk = tmpdisk;
  528                 }
  529                 if (olddisk == NULL) {
  530 nofit:
  531                         if (disk_pos == -3 || pd->pd_disk_pos == -3) {
  532                                 g_raid_change_disk_state(disk,
  533                                     G_RAID_DISK_S_SPARE);
  534                                 return (1);
  535                         } else {
  536                                 g_raid_change_disk_state(disk,
  537                                     G_RAID_DISK_S_STALE);
  538                                 return (0);
  539                         }
  540                 }
  541                 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data;
  542                 disk_pos = oldpd->pd_disk_pos;
  543                 resurrection = 1;
  544         }
  545 
  546         if (olddisk == NULL) {
  547                 /* Find placeholder by position. */
  548                 olddisk = g_raid_md_sii_get_disk(sc, disk_pos);
  549                 if (olddisk == NULL)
  550                         panic("No disk at position %d!", disk_pos);
  551                 if (olddisk->d_state != G_RAID_DISK_S_OFFLINE) {
  552                         G_RAID_DEBUG1(1, sc, "More than one disk for pos %d",
  553                             disk_pos);
  554                         g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE);
  555                         return (0);
  556                 }
  557                 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data;
  558         }
  559 
  560         /* Replace failed disk or placeholder with new disk. */
  561         TAILQ_FOREACH_SAFE(sd, &olddisk->d_subdisks, sd_next, tmpsd) {
  562                 TAILQ_REMOVE(&olddisk->d_subdisks, sd, sd_next);
  563                 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
  564                 sd->sd_disk = disk;
  565         }
  566         oldpd->pd_disk_pos = -2;
  567         pd->pd_disk_pos = disk_pos;
  568 
  569         /* If it was placeholder -- destroy it. */
  570         if (olddisk->d_state == G_RAID_DISK_S_OFFLINE) {
  571                 g_raid_destroy_disk(olddisk);
  572         } else {
  573                 /* Otherwise, make it STALE_FAILED. */
  574                 g_raid_change_disk_state(olddisk, G_RAID_DISK_S_STALE_FAILED);
  575         }
  576 
  577         /* Welcome the new disk. */
  578         if (resurrection)
  579                 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
  580         else if (pd->pd_meta->disk_status == SII_S_CURRENT ||
  581             pd->pd_meta->disk_status == SII_S_REBUILD)
  582                 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
  583         else
  584                 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
  585         TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
  586 
  587                 /*
  588                  * Different disks may have different sizes,
  589                  * in concat mode. Update from real disk size.
  590                  */
  591                 if (meta->type == SII_T_CONCAT || meta->type == SII_T_JBOD)
  592                         sd->sd_size = pd->pd_disk_size - 0x800 * 512;
  593 
  594                 if (resurrection) {
  595                         /* New or ex-spare disk. */
  596                         g_raid_change_subdisk_state(sd,
  597                             G_RAID_SUBDISK_S_NEW);
  598                 } else if (pd->pd_meta->disk_status == SII_S_REBUILD) {
  599                         /* Rebuilding disk. */
  600                         g_raid_change_subdisk_state(sd,
  601                             G_RAID_SUBDISK_S_REBUILD);
  602                         if (pd->pd_meta->generation == meta->generation)
  603                                 sd->sd_rebuild_pos = pd->pd_meta->rebuild_lba * 512;
  604                         else
  605                                 sd->sd_rebuild_pos = 0;
  606                 } else if (pd->pd_meta->disk_status == SII_S_CURRENT) {
  607                         if (pd->pd_meta->raid_status == SII_S_ONLINE ||
  608                             pd->pd_meta->generation != meta->generation) {
  609                                 /* Dirty or resyncing disk. */
  610                                 g_raid_change_subdisk_state(sd,
  611                                     G_RAID_SUBDISK_S_STALE);
  612                         } else {
  613                                 /* Up to date disk. */
  614                                 g_raid_change_subdisk_state(sd,
  615                                     G_RAID_SUBDISK_S_ACTIVE);
  616                         }
  617                 } else {
  618                         g_raid_change_subdisk_state(sd,
  619                             G_RAID_SUBDISK_S_FAILED);
  620                 }
  621                 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
  622                     G_RAID_EVENT_SUBDISK);
  623         }
  624 
  625         /* Update status of our need for spare. */
  626         if (mdi->mdio_started) {
  627                 mdi->mdio_incomplete =
  628                     (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) <
  629                      mdi->mdio_total_disks);
  630         }
  631 
  632         return (resurrection);
  633 }
  634 
  635 static void
  636 g_disk_md_sii_retaste(void *arg, int pending)
  637 {
  638 
  639         G_RAID_DEBUG(1, "Array is not complete, trying to retaste.");
  640         g_retaste(&g_raid_class);
  641         free(arg, M_MD_SII);
  642 }
  643 
  644 static void
  645 g_raid_md_sii_refill(struct g_raid_softc *sc)
  646 {
  647         struct g_raid_md_object *md;
  648         struct g_raid_md_sii_object *mdi;
  649         struct g_raid_disk *disk;
  650         struct task *task;
  651         int update, na;
  652 
  653         md = sc->sc_md;
  654         mdi = (struct g_raid_md_sii_object *)md;
  655         update = 0;
  656         do {
  657                 /* Make sure we miss anything. */
  658                 na = g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE);
  659                 if (na == mdi->mdio_total_disks)
  660                         break;
  661 
  662                 G_RAID_DEBUG1(1, md->mdo_softc,
  663                     "Array is not complete (%d of %d), "
  664                     "trying to refill.", na, mdi->mdio_total_disks);
  665 
  666                 /* Try to get use some of STALE disks. */
  667                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
  668                         if (disk->d_state == G_RAID_DISK_S_STALE) {
  669                                 update += g_raid_md_sii_start_disk(disk);
  670                                 if (disk->d_state == G_RAID_DISK_S_ACTIVE)
  671                                         break;
  672                         }
  673                 }
  674                 if (disk != NULL)
  675                         continue;
  676 
  677                 /* Try to get use some of SPARE disks. */
  678                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
  679                         if (disk->d_state == G_RAID_DISK_S_SPARE) {
  680                                 update += g_raid_md_sii_start_disk(disk);
  681                                 if (disk->d_state == G_RAID_DISK_S_ACTIVE)
  682                                         break;
  683                         }
  684                 }
  685         } while (disk != NULL);
  686 
  687         /* Write new metadata if we changed something. */
  688         if (update)
  689                 g_raid_md_write_sii(md, NULL, NULL, NULL);
  690 
  691         /* Update status of our need for spare. */
  692         mdi->mdio_incomplete = (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) <
  693             mdi->mdio_total_disks);
  694 
  695         /* Request retaste hoping to find spare. */
  696         if (mdi->mdio_incomplete) {
  697                 task = malloc(sizeof(struct task),
  698                     M_MD_SII, M_WAITOK | M_ZERO);
  699                 TASK_INIT(task, 0, g_disk_md_sii_retaste, task);
  700                 taskqueue_enqueue(taskqueue_swi, task);
  701         }
  702 }
  703 
  704 static void
  705 g_raid_md_sii_start(struct g_raid_softc *sc)
  706 {
  707         struct g_raid_md_object *md;
  708         struct g_raid_md_sii_object *mdi;
  709         struct g_raid_md_sii_perdisk *pd;
  710         struct sii_raid_conf *meta;
  711         struct g_raid_volume *vol;
  712         struct g_raid_subdisk *sd;
  713         struct g_raid_disk *disk, *best;
  714         off_t size;
  715         int j, disk_pos;
  716         uint32_t gendiff, bestgendiff;
  717         char buf[17];
  718 
  719         md = sc->sc_md;
  720         mdi = (struct g_raid_md_sii_object *)md;
  721         meta = mdi->mdio_meta;
  722 
  723         /* Create volumes and subdisks. */
  724         sii_meta_get_name(meta, buf);
  725         vol = g_raid_create_volume(sc, buf, -1);
  726         vol->v_mediasize = (off_t)meta->total_sectors * 512;
  727         vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE;
  728         if (meta->type == SII_T_RAID0) {
  729                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0;
  730                 size = vol->v_mediasize / mdi->mdio_total_disks;
  731         } else if (meta->type == SII_T_RAID1) {
  732                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1;
  733                 size = vol->v_mediasize;
  734         } else if (meta->type == SII_T_RAID01) {
  735                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
  736                 size = vol->v_mediasize / (mdi->mdio_total_disks / 2);
  737         } else if (meta->type == SII_T_CONCAT) {
  738                 if (mdi->mdio_total_disks == 1)
  739                         vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE;
  740                 else
  741                         vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT;
  742                 size = 0;
  743         } else if (meta->type == SII_T_RAID5) {
  744                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5;
  745                 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LS;
  746                 size = vol->v_mediasize / (mdi->mdio_total_disks - 1);
  747         } else if (meta->type == SII_T_JBOD) {
  748                 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE;
  749                 size = 0;
  750         } else {
  751                 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN;
  752                 size = 0;
  753         }
  754         vol->v_strip_size = meta->strip_sectors * 512; //ZZZ
  755         vol->v_disks_count = mdi->mdio_total_disks;
  756         vol->v_sectorsize = 512; //ZZZ
  757         for (j = 0; j < vol->v_disks_count; j++) {
  758                 sd = &vol->v_subdisks[j];
  759                 sd->sd_offset = 0;
  760                 sd->sd_size = size;
  761         }
  762         g_raid_start_volume(vol);
  763 
  764         /* Create disk placeholders to store data for later writing. */
  765         for (disk_pos = 0; disk_pos < mdi->mdio_total_disks; disk_pos++) {
  766                 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO);
  767                 pd->pd_disk_pos = disk_pos;
  768                 disk = g_raid_create_disk(sc);
  769                 disk->d_md_data = (void *)pd;
  770                 disk->d_state = G_RAID_DISK_S_OFFLINE;
  771                 sd = &vol->v_subdisks[disk_pos];
  772                 sd->sd_disk = disk;
  773                 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
  774         }
  775 
  776         /*
  777          * Make all disks found till the moment take their places
  778          * in order of their generation numbers.
  779          */
  780         do {
  781                 best = NULL;
  782                 bestgendiff = 0xffffffff;
  783                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
  784                         if (disk->d_state != G_RAID_DISK_S_NONE)
  785                                 continue;
  786                         pd = disk->d_md_data;
  787                         if (pd->pd_meta == NULL)
  788                                 gendiff = 0xfffffffe;
  789                         else
  790                                 gendiff = meta->generation -
  791                                     pd->pd_meta->generation;
  792                         if (gendiff < bestgendiff) {
  793                                 best = disk;
  794                                 bestgendiff = gendiff;
  795                         }
  796                 }
  797                 if (best != NULL)
  798                         g_raid_md_sii_start_disk(best);
  799         } while (best != NULL);
  800 
  801         mdi->mdio_started = 1;
  802         G_RAID_DEBUG1(0, sc, "Array started.");
  803         g_raid_md_write_sii(md, NULL, NULL, NULL);
  804 
  805         /* Pickup any STALE/SPARE disks to refill array if needed. */
  806         g_raid_md_sii_refill(sc);
  807 
  808         g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME);
  809 
  810         callout_stop(&mdi->mdio_start_co);
  811         G_RAID_DEBUG1(1, sc, "root_mount_rel %p", mdi->mdio_rootmount);
  812         root_mount_rel(mdi->mdio_rootmount);
  813         mdi->mdio_rootmount = NULL;
  814 }
  815 
  816 static void
  817 g_raid_md_sii_new_disk(struct g_raid_disk *disk)
  818 {
  819         struct g_raid_softc *sc;
  820         struct g_raid_md_object *md;
  821         struct g_raid_md_sii_object *mdi;
  822         struct sii_raid_conf *pdmeta;
  823         struct g_raid_md_sii_perdisk *pd;
  824 
  825         sc = disk->d_softc;
  826         md = sc->sc_md;
  827         mdi = (struct g_raid_md_sii_object *)md;
  828         pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data;
  829         pdmeta = pd->pd_meta;
  830 
  831         if (mdi->mdio_started) {
  832                 if (g_raid_md_sii_start_disk(disk))
  833                         g_raid_md_write_sii(md, NULL, NULL, NULL);
  834         } else {
  835                 if (mdi->mdio_meta == NULL ||
  836                     ((int32_t)(pdmeta->generation - mdi->mdio_generation)) > 0) {
  837                         G_RAID_DEBUG1(1, sc, "Newer disk");
  838                         if (mdi->mdio_meta != NULL)
  839                                 free(mdi->mdio_meta, M_MD_SII);
  840                         mdi->mdio_meta = sii_meta_copy(pdmeta);
  841                         mdi->mdio_generation = mdi->mdio_meta->generation;
  842                         mdi->mdio_total_disks = sii_meta_total_disks(pdmeta);
  843                         mdi->mdio_disks_present = 1;
  844                 } else if (pdmeta->generation == mdi->mdio_generation) {
  845                         mdi->mdio_disks_present++;
  846                         G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)",
  847                             mdi->mdio_disks_present,
  848                             mdi->mdio_total_disks);
  849                 } else {
  850                         G_RAID_DEBUG1(1, sc, "Older disk");
  851                 }
  852 
  853                 /* If we collected all needed disks - start array. */
  854                 if (mdi->mdio_disks_present == mdi->mdio_total_disks)
  855                         g_raid_md_sii_start(sc);
  856         }
  857 }
  858 
  859 static void
  860 g_raid_sii_go(void *arg)
  861 {
  862         struct g_raid_softc *sc;
  863         struct g_raid_md_object *md;
  864         struct g_raid_md_sii_object *mdi;
  865 
  866         sc = arg;
  867         md = sc->sc_md;
  868         mdi = (struct g_raid_md_sii_object *)md;
  869         if (!mdi->mdio_started) {
  870                 G_RAID_DEBUG1(0, sc, "Force array start due to timeout.");
  871                 g_raid_event_send(sc, G_RAID_NODE_E_START, 0);
  872         }
  873 }
  874 
  875 static int
  876 g_raid_md_create_sii(struct g_raid_md_object *md, struct g_class *mp,
  877     struct g_geom **gp)
  878 {
  879         struct g_raid_softc *sc;
  880         struct g_raid_md_sii_object *mdi;
  881         char name[32];
  882 
  883         mdi = (struct g_raid_md_sii_object *)md;
  884         mdi->mdio_timestamp[5] = arc4random();
  885         mdi->mdio_timestamp[4] = arc4random();
  886         mdi->mdio_timestamp[3] = arc4random();
  887         mdi->mdio_timestamp[2] = arc4random();
  888         mdi->mdio_timestamp[1] = arc4random();
  889         mdi->mdio_timestamp[0] = arc4random();
  890         mdi->mdio_location = arc4random();
  891         mdi->mdio_generation = 0;
  892         snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x",
  893             mdi->mdio_timestamp[5], mdi->mdio_timestamp[4],
  894             mdi->mdio_timestamp[3], mdi->mdio_timestamp[2],
  895             mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]);
  896         sc = g_raid_create_node(mp, name, md);
  897         if (sc == NULL)
  898                 return (G_RAID_MD_TASTE_FAIL);
  899         md->mdo_softc = sc;
  900         *gp = sc->sc_geom;
  901         return (G_RAID_MD_TASTE_NEW);
  902 }
  903 
  904 static int
  905 g_raid_md_taste_sii(struct g_raid_md_object *md, struct g_class *mp,
  906                               struct g_consumer *cp, struct g_geom **gp)
  907 {
  908         struct g_consumer *rcp;
  909         struct g_provider *pp;
  910         struct g_raid_md_sii_object *mdi, *mdi1;
  911         struct g_raid_softc *sc;
  912         struct g_raid_disk *disk;
  913         struct sii_raid_conf *meta;
  914         struct g_raid_md_sii_perdisk *pd;
  915         struct g_geom *geom;
  916         int disk_pos, result, spare, len;
  917         char name[32];
  918         uint16_t vendor;
  919 
  920         G_RAID_DEBUG(1, "Tasting SiI on %s", cp->provider->name);
  921         mdi = (struct g_raid_md_sii_object *)md;
  922         pp = cp->provider;
  923 
  924         /* Read metadata from device. */
  925         meta = NULL;
  926         g_topology_unlock();
  927         vendor = 0xffff;
  928         len = sizeof(vendor);
  929         if (pp->geom->rank == 1)
  930                 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor);
  931         meta = sii_meta_read(cp);
  932         g_topology_lock();
  933         if (meta == NULL) {
  934                 if (g_raid_aggressive_spare) {
  935                         if (vendor == 0x1095) {
  936                                 G_RAID_DEBUG(1,
  937                                     "No SiI metadata, forcing spare.");
  938                                 spare = 2;
  939                                 goto search;
  940                         } else {
  941                                 G_RAID_DEBUG(1,
  942                                     "SiI vendor mismatch 0x%04x != 0x1095",
  943                                     vendor);
  944                         }
  945                 }
  946                 return (G_RAID_MD_TASTE_FAIL);
  947         }
  948 
  949         /* Check this disk position in obtained metadata. */
  950         disk_pos = sii_meta_disk_pos(meta, meta);
  951         if (disk_pos == -1) {
  952                 G_RAID_DEBUG(1, "SiI disk position not found");
  953                 goto fail1;
  954         }
  955 
  956         /* Metadata valid. Print it. */
  957         g_raid_md_sii_print(meta);
  958         G_RAID_DEBUG(1, "SiI disk position %d", disk_pos);
  959         spare = (meta->type == SII_T_SPARE) ? 1 : 0;
  960 
  961 search:
  962         /* Search for matching node. */
  963         sc = NULL;
  964         mdi1 = NULL;
  965         LIST_FOREACH(geom, &mp->geom, geom) {
  966                 sc = geom->softc;
  967                 if (sc == NULL)
  968                         continue;
  969                 if (sc->sc_stopping != 0)
  970                         continue;
  971                 if (sc->sc_md->mdo_class != md->mdo_class)
  972                         continue;
  973                 mdi1 = (struct g_raid_md_sii_object *)sc->sc_md;
  974                 if (spare) {
  975                         if (mdi1->mdio_incomplete)
  976                                 break;
  977                 } else {
  978                         if (mdi1->mdio_location == meta->raid_location &&
  979                             memcmp(&mdi1->mdio_timestamp,
  980                              &meta->timestamp, 6) == 0)
  981                                 break;
  982                 }
  983         }
  984 
  985         /* Found matching node. */
  986         if (geom != NULL) {
  987                 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
  988                 result = G_RAID_MD_TASTE_EXISTING;
  989 
  990         } else if (spare) { /* Not found needy node -- left for later. */
  991                 G_RAID_DEBUG(1, "Spare is not needed at this time");
  992                 goto fail1;
  993 
  994         } else { /* Not found matching node -- create one. */
  995                 result = G_RAID_MD_TASTE_NEW;
  996                 memcpy(&mdi->mdio_timestamp, &meta->timestamp, 6);
  997                 mdi->mdio_location = meta->raid_location;
  998                 snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x",
  999                     mdi->mdio_timestamp[5], mdi->mdio_timestamp[4],
 1000                     mdi->mdio_timestamp[3], mdi->mdio_timestamp[2],
 1001                     mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]);
 1002                 sc = g_raid_create_node(mp, name, md);
 1003                 md->mdo_softc = sc;
 1004                 geom = sc->sc_geom;
 1005                 callout_init(&mdi->mdio_start_co, 1);
 1006                 callout_reset(&mdi->mdio_start_co, g_raid_start_timeout * hz,
 1007                     g_raid_sii_go, sc);
 1008                 mdi->mdio_rootmount = root_mount_hold("GRAID-SiI");
 1009                 G_RAID_DEBUG1(1, sc, "root_mount_hold %p", mdi->mdio_rootmount);
 1010         }
 1011 
 1012         /* There is no return after this point, so we close passed consumer. */
 1013         g_access(cp, -1, 0, 0);
 1014 
 1015         rcp = g_new_consumer(geom);
 1016         rcp->flags |= G_CF_DIRECT_RECEIVE;
 1017         g_attach(rcp, pp);
 1018         if (g_access(rcp, 1, 1, 1) != 0)
 1019                 ; //goto fail1;
 1020 
 1021         g_topology_unlock();
 1022         sx_xlock(&sc->sc_lock);
 1023 
 1024         pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO);
 1025         pd->pd_meta = meta;
 1026         if (spare == 2) {
 1027                 pd->pd_disk_pos = -3;
 1028         } else {
 1029                 pd->pd_disk_pos = -1;
 1030         }
 1031         pd->pd_disk_size = pp->mediasize;
 1032         disk = g_raid_create_disk(sc);
 1033         disk->d_md_data = (void *)pd;
 1034         disk->d_consumer = rcp;
 1035         rcp->private = disk;
 1036 
 1037         g_raid_get_disk_info(disk);
 1038 
 1039         g_raid_md_sii_new_disk(disk);
 1040 
 1041         sx_xunlock(&sc->sc_lock);
 1042         g_topology_lock();
 1043         *gp = geom;
 1044         return (result);
 1045 fail1:
 1046         free(meta, M_MD_SII);
 1047         return (G_RAID_MD_TASTE_FAIL);
 1048 }
 1049 
 1050 static int
 1051 g_raid_md_event_sii(struct g_raid_md_object *md,
 1052     struct g_raid_disk *disk, u_int event)
 1053 {
 1054         struct g_raid_softc *sc;
 1055         struct g_raid_subdisk *sd;
 1056         struct g_raid_md_sii_object *mdi;
 1057         struct g_raid_md_sii_perdisk *pd;
 1058 
 1059         sc = md->mdo_softc;
 1060         mdi = (struct g_raid_md_sii_object *)md;
 1061         if (disk == NULL) {
 1062                 switch (event) {
 1063                 case G_RAID_NODE_E_START:
 1064                         if (!mdi->mdio_started)
 1065                                 g_raid_md_sii_start(sc);
 1066                         return (0);
 1067                 }
 1068                 return (-1);
 1069         }
 1070         pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data;
 1071         switch (event) {
 1072         case G_RAID_DISK_E_DISCONNECTED:
 1073                 /* If disk was assigned, just update statuses. */
 1074                 if (pd->pd_disk_pos >= 0) {
 1075                         g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
 1076                         if (disk->d_consumer) {
 1077                                 g_raid_kill_consumer(sc, disk->d_consumer);
 1078                                 disk->d_consumer = NULL;
 1079                         }
 1080                         TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
 1081                                 g_raid_change_subdisk_state(sd,
 1082                                     G_RAID_SUBDISK_S_NONE);
 1083                                 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED,
 1084                                     G_RAID_EVENT_SUBDISK);
 1085                         }
 1086                 } else {
 1087                         /* Otherwise -- delete. */
 1088                         g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
 1089                         g_raid_destroy_disk(disk);
 1090                 }
 1091 
 1092                 /* Write updated metadata to all disks. */
 1093                 g_raid_md_write_sii(md, NULL, NULL, NULL);
 1094 
 1095                 /* Check if anything left except placeholders. */
 1096                 if (g_raid_ndisks(sc, -1) ==
 1097                     g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
 1098                         g_raid_destroy_node(sc, 0);
 1099                 else
 1100                         g_raid_md_sii_refill(sc);
 1101                 return (0);
 1102         }
 1103         return (-2);
 1104 }
 1105 
 1106 static int
 1107 g_raid_md_ctl_sii(struct g_raid_md_object *md,
 1108     struct gctl_req *req)
 1109 {
 1110         struct g_raid_softc *sc;
 1111         struct g_raid_volume *vol;
 1112         struct g_raid_subdisk *sd;
 1113         struct g_raid_disk *disk;
 1114         struct g_raid_md_sii_object *mdi;
 1115         struct g_raid_md_sii_perdisk *pd;
 1116         struct g_consumer *cp;
 1117         struct g_provider *pp;
 1118         char arg[16];
 1119         const char *verb, *volname, *levelname, *diskname;
 1120         int *nargs, *force;
 1121         off_t size, sectorsize, strip;
 1122         intmax_t *sizearg, *striparg;
 1123         int numdisks, i, len, level, qual, update;
 1124         int error;
 1125 
 1126         sc = md->mdo_softc;
 1127         mdi = (struct g_raid_md_sii_object *)md;
 1128         verb = gctl_get_param(req, "verb", NULL);
 1129         nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
 1130         error = 0;
 1131         if (strcmp(verb, "label") == 0) {
 1132 
 1133                 if (*nargs < 4) {
 1134                         gctl_error(req, "Invalid number of arguments.");
 1135                         return (-1);
 1136                 }
 1137                 volname = gctl_get_asciiparam(req, "arg1");
 1138                 if (volname == NULL) {
 1139                         gctl_error(req, "No volume name.");
 1140                         return (-2);
 1141                 }
 1142                 levelname = gctl_get_asciiparam(req, "arg2");
 1143                 if (levelname == NULL) {
 1144                         gctl_error(req, "No RAID level.");
 1145                         return (-3);
 1146                 }
 1147                 if (strcasecmp(levelname, "RAID5") == 0)
 1148                         levelname = "RAID5-LS";
 1149                 if (g_raid_volume_str2level(levelname, &level, &qual)) {
 1150                         gctl_error(req, "Unknown RAID level '%s'.", levelname);
 1151                         return (-4);
 1152                 }
 1153                 numdisks = *nargs - 3;
 1154                 force = gctl_get_paraml(req, "force", sizeof(*force));
 1155                 if (!g_raid_md_sii_supported(level, qual, numdisks,
 1156                     force ? *force : 0)) {
 1157                         gctl_error(req, "Unsupported RAID level "
 1158                             "(0x%02x/0x%02x), or number of disks (%d).",
 1159                             level, qual, numdisks);
 1160                         return (-5);
 1161                 }
 1162 
 1163                 /* Search for disks, connect them and probe. */
 1164                 size = 0x7fffffffffffffffllu;
 1165                 sectorsize = 0;
 1166                 for (i = 0; i < numdisks; i++) {
 1167                         snprintf(arg, sizeof(arg), "arg%d", i + 3);
 1168                         diskname = gctl_get_asciiparam(req, arg);
 1169                         if (diskname == NULL) {
 1170                                 gctl_error(req, "No disk name (%s).", arg);
 1171                                 error = -6;
 1172                                 break;
 1173                         }
 1174                         if (strcmp(diskname, "NONE") == 0) {
 1175                                 cp = NULL;
 1176                                 pp = NULL;
 1177                         } else {
 1178                                 g_topology_lock();
 1179                                 cp = g_raid_open_consumer(sc, diskname);
 1180                                 if (cp == NULL) {
 1181                                         gctl_error(req, "Can't open '%s'.",
 1182                                             diskname);
 1183                                         g_topology_unlock();
 1184                                         error = -7;
 1185                                         break;
 1186                                 }
 1187                                 pp = cp->provider;
 1188                         }
 1189                         pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO);
 1190                         pd->pd_disk_pos = i;
 1191                         disk = g_raid_create_disk(sc);
 1192                         disk->d_md_data = (void *)pd;
 1193                         disk->d_consumer = cp;
 1194                         if (cp == NULL)
 1195                                 continue;
 1196                         cp->private = disk;
 1197                         g_topology_unlock();
 1198 
 1199                         g_raid_get_disk_info(disk);
 1200 
 1201                         pd->pd_disk_size = pp->mediasize;
 1202                         if (size > pp->mediasize)
 1203                                 size = pp->mediasize;
 1204                         if (sectorsize < pp->sectorsize)
 1205                                 sectorsize = pp->sectorsize;
 1206                 }
 1207                 if (error != 0)
 1208                         return (error);
 1209 
 1210                 if (sectorsize <= 0) {
 1211                         gctl_error(req, "Can't get sector size.");
 1212                         return (-8);
 1213                 }
 1214 
 1215                 /* Reserve space for metadata. */
 1216                 size -= 0x800 * sectorsize;
 1217 
 1218                 /* Handle size argument. */
 1219                 len = sizeof(*sizearg);
 1220                 sizearg = gctl_get_param(req, "size", &len);
 1221                 if (sizearg != NULL && len == sizeof(*sizearg) &&
 1222                     *sizearg > 0) {
 1223                         if (*sizearg > size) {
 1224                                 gctl_error(req, "Size too big %lld > %lld.",
 1225                                     (long long)*sizearg, (long long)size);
 1226                                 return (-9);
 1227                         }
 1228                         size = *sizearg;
 1229                 }
 1230 
 1231                 /* Handle strip argument. */
 1232                 strip = 131072;
 1233                 len = sizeof(*striparg);
 1234                 striparg = gctl_get_param(req, "strip", &len);
 1235                 if (striparg != NULL && len == sizeof(*striparg) &&
 1236                     *striparg > 0) {
 1237                         if (*striparg < sectorsize) {
 1238                                 gctl_error(req, "Strip size too small.");
 1239                                 return (-10);
 1240                         }
 1241                         if (*striparg % sectorsize != 0) {
 1242                                 gctl_error(req, "Incorrect strip size.");
 1243                                 return (-11);
 1244                         }
 1245                         if (strip > 65535 * sectorsize) {
 1246                                 gctl_error(req, "Strip size too big.");
 1247                                 return (-12);
 1248                         }
 1249                         strip = *striparg;
 1250                 }
 1251 
 1252                 /* Round size down to strip or sector. */
 1253                 if (level == G_RAID_VOLUME_RL_RAID1)
 1254                         size -= (size % sectorsize);
 1255                 else if (level == G_RAID_VOLUME_RL_RAID1E &&
 1256                     (numdisks & 1) != 0)
 1257                         size -= (size % (2 * strip));
 1258                 else
 1259                         size -= (size % strip);
 1260                 if (size <= 0) {
 1261                         gctl_error(req, "Size too small.");
 1262                         return (-13);
 1263                 }
 1264                 if (size > 0xffffffffffffllu * sectorsize) {
 1265                         gctl_error(req, "Size too big.");
 1266                         return (-14);
 1267                 }
 1268 
 1269                 /* We have all we need, create things: volume, ... */
 1270                 mdi->mdio_total_disks = numdisks;
 1271                 mdi->mdio_started = 1;
 1272                 vol = g_raid_create_volume(sc, volname, -1);
 1273                 vol->v_md_data = (void *)(intptr_t)0;
 1274                 vol->v_raid_level = level;
 1275                 vol->v_raid_level_qualifier = qual;
 1276                 vol->v_strip_size = strip;
 1277                 vol->v_disks_count = numdisks;
 1278                 if (level == G_RAID_VOLUME_RL_RAID0 ||
 1279                     level == G_RAID_VOLUME_RL_CONCAT ||
 1280                     level == G_RAID_VOLUME_RL_SINGLE)
 1281                         vol->v_mediasize = size * numdisks;
 1282                 else if (level == G_RAID_VOLUME_RL_RAID1)
 1283                         vol->v_mediasize = size;
 1284                 else if (level == G_RAID_VOLUME_RL_RAID5)
 1285                         vol->v_mediasize = size * (numdisks - 1);
 1286                 else { /* RAID1E */
 1287                         vol->v_mediasize = ((size * numdisks) / strip / 2) *
 1288                             strip;
 1289                 }
 1290                 vol->v_sectorsize = sectorsize;
 1291                 g_raid_start_volume(vol);
 1292 
 1293                 /* , and subdisks. */
 1294                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 1295                         pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data;
 1296                         sd = &vol->v_subdisks[pd->pd_disk_pos];
 1297                         sd->sd_disk = disk;
 1298                         sd->sd_offset = 0;
 1299                         sd->sd_size = size;
 1300                         TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
 1301                         if (sd->sd_disk->d_consumer != NULL) {
 1302                                 g_raid_change_disk_state(disk,
 1303                                     G_RAID_DISK_S_ACTIVE);
 1304                                 g_raid_change_subdisk_state(sd,
 1305                                     G_RAID_SUBDISK_S_ACTIVE);
 1306                                 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
 1307                                     G_RAID_EVENT_SUBDISK);
 1308                         } else {
 1309                                 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
 1310                         }
 1311                 }
 1312 
 1313                 /* Write metadata based on created entities. */
 1314                 G_RAID_DEBUG1(0, sc, "Array started.");
 1315                 g_raid_md_write_sii(md, NULL, NULL, NULL);
 1316 
 1317                 /* Pickup any STALE/SPARE disks to refill array if needed. */
 1318                 g_raid_md_sii_refill(sc);
 1319 
 1320                 g_raid_event_send(vol, G_RAID_VOLUME_E_START,
 1321                     G_RAID_EVENT_VOLUME);
 1322                 return (0);
 1323         }
 1324         if (strcmp(verb, "delete") == 0) {
 1325 
 1326                 /* Check if some volume is still open. */
 1327                 force = gctl_get_paraml(req, "force", sizeof(*force));
 1328                 if (force != NULL && *force == 0 &&
 1329                     g_raid_nopens(sc) != 0) {
 1330                         gctl_error(req, "Some volume is still open.");
 1331                         return (-4);
 1332                 }
 1333 
 1334                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 1335                         if (disk->d_consumer)
 1336                                 sii_meta_erase(disk->d_consumer);
 1337                 }
 1338                 g_raid_destroy_node(sc, 0);
 1339                 return (0);
 1340         }
 1341         if (strcmp(verb, "remove") == 0 ||
 1342             strcmp(verb, "fail") == 0) {
 1343                 if (*nargs < 2) {
 1344                         gctl_error(req, "Invalid number of arguments.");
 1345                         return (-1);
 1346                 }
 1347                 for (i = 1; i < *nargs; i++) {
 1348                         snprintf(arg, sizeof(arg), "arg%d", i);
 1349                         diskname = gctl_get_asciiparam(req, arg);
 1350                         if (diskname == NULL) {
 1351                                 gctl_error(req, "No disk name (%s).", arg);
 1352                                 error = -2;
 1353                                 break;
 1354                         }
 1355                         if (strncmp(diskname, "/dev/", 5) == 0)
 1356                                 diskname += 5;
 1357 
 1358                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 1359                                 if (disk->d_consumer != NULL && 
 1360                                     disk->d_consumer->provider != NULL &&
 1361                                     strcmp(disk->d_consumer->provider->name,
 1362                                      diskname) == 0)
 1363                                         break;
 1364                         }
 1365                         if (disk == NULL) {
 1366                                 gctl_error(req, "Disk '%s' not found.",
 1367                                     diskname);
 1368                                 error = -3;
 1369                                 break;
 1370                         }
 1371 
 1372                         if (strcmp(verb, "fail") == 0) {
 1373                                 g_raid_md_fail_disk_sii(md, NULL, disk);
 1374                                 continue;
 1375                         }
 1376 
 1377                         pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data;
 1378 
 1379                         /* Erase metadata on deleting disk. */
 1380                         sii_meta_erase(disk->d_consumer);
 1381 
 1382                         /* If disk was assigned, just update statuses. */
 1383                         if (pd->pd_disk_pos >= 0) {
 1384                                 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
 1385                                 g_raid_kill_consumer(sc, disk->d_consumer);
 1386                                 disk->d_consumer = NULL;
 1387                                 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
 1388                                         g_raid_change_subdisk_state(sd,
 1389                                             G_RAID_SUBDISK_S_NONE);
 1390                                         g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED,
 1391                                             G_RAID_EVENT_SUBDISK);
 1392                                 }
 1393                         } else {
 1394                                 /* Otherwise -- delete. */
 1395                                 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
 1396                                 g_raid_destroy_disk(disk);
 1397                         }
 1398                 }
 1399 
 1400                 /* Write updated metadata to remaining disks. */
 1401                 g_raid_md_write_sii(md, NULL, NULL, NULL);
 1402 
 1403                 /* Check if anything left except placeholders. */
 1404                 if (g_raid_ndisks(sc, -1) ==
 1405                     g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
 1406                         g_raid_destroy_node(sc, 0);
 1407                 else
 1408                         g_raid_md_sii_refill(sc);
 1409                 return (error);
 1410         }
 1411         if (strcmp(verb, "insert") == 0) {
 1412                 if (*nargs < 2) {
 1413                         gctl_error(req, "Invalid number of arguments.");
 1414                         return (-1);
 1415                 }
 1416                 update = 0;
 1417                 for (i = 1; i < *nargs; i++) {
 1418                         /* Get disk name. */
 1419                         snprintf(arg, sizeof(arg), "arg%d", i);
 1420                         diskname = gctl_get_asciiparam(req, arg);
 1421                         if (diskname == NULL) {
 1422                                 gctl_error(req, "No disk name (%s).", arg);
 1423                                 error = -3;
 1424                                 break;
 1425                         }
 1426 
 1427                         /* Try to find provider with specified name. */
 1428                         g_topology_lock();
 1429                         cp = g_raid_open_consumer(sc, diskname);
 1430                         if (cp == NULL) {
 1431                                 gctl_error(req, "Can't open disk '%s'.",
 1432                                     diskname);
 1433                                 g_topology_unlock();
 1434                                 error = -4;
 1435                                 break;
 1436                         }
 1437                         pp = cp->provider;
 1438 
 1439                         pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO);
 1440                         pd->pd_disk_pos = -3;
 1441                         pd->pd_disk_size = pp->mediasize;
 1442 
 1443                         disk = g_raid_create_disk(sc);
 1444                         disk->d_consumer = cp;
 1445                         disk->d_md_data = (void *)pd;
 1446                         cp->private = disk;
 1447                         g_topology_unlock();
 1448 
 1449                         g_raid_get_disk_info(disk);
 1450 
 1451                         /* Welcome the "new" disk. */
 1452                         update += g_raid_md_sii_start_disk(disk);
 1453                         if (disk->d_state == G_RAID_DISK_S_SPARE) {
 1454                                 sii_meta_write_spare(cp);
 1455                                 g_raid_destroy_disk(disk);
 1456                         } else if (disk->d_state != G_RAID_DISK_S_ACTIVE) {
 1457                                 gctl_error(req, "Disk '%s' doesn't fit.",
 1458                                     diskname);
 1459                                 g_raid_destroy_disk(disk);
 1460                                 error = -8;
 1461                                 break;
 1462                         }
 1463                 }
 1464 
 1465                 /* Write new metadata if we changed something. */
 1466                 if (update)
 1467                         g_raid_md_write_sii(md, NULL, NULL, NULL);
 1468                 return (error);
 1469         }
 1470         gctl_error(req, "Command '%s' is not supported.", verb);
 1471         return (-100);
 1472 }
 1473 
 1474 static int
 1475 g_raid_md_write_sii(struct g_raid_md_object *md, struct g_raid_volume *tvol,
 1476     struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
 1477 {
 1478         struct g_raid_softc *sc;
 1479         struct g_raid_volume *vol;
 1480         struct g_raid_subdisk *sd;
 1481         struct g_raid_disk *disk;
 1482         struct g_raid_md_sii_object *mdi;
 1483         struct g_raid_md_sii_perdisk *pd;
 1484         struct sii_raid_conf *meta;
 1485         u_int i;
 1486 
 1487         sc = md->mdo_softc;
 1488         mdi = (struct g_raid_md_sii_object *)md;
 1489 
 1490         if (sc->sc_stopping == G_RAID_DESTROY_HARD)
 1491                 return (0);
 1492 
 1493         /* Bump generation. Newly written metadata may differ from previous. */
 1494         mdi->mdio_generation++;
 1495 
 1496         /* There is only one volume. */
 1497         vol = TAILQ_FIRST(&sc->sc_volumes);
 1498 
 1499         /* Fill global fields. */
 1500         meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO);
 1501         if (mdi->mdio_meta)
 1502                 memcpy(meta, mdi->mdio_meta, sizeof(*meta));
 1503         meta->total_sectors = vol->v_mediasize / vol->v_sectorsize;
 1504         meta->vendor_id = 0x1095;
 1505         meta->version_minor = 0;
 1506         meta->version_major = 2;
 1507         memcpy(&meta->timestamp, &mdi->mdio_timestamp, 6);
 1508         meta->strip_sectors = vol->v_strip_size / vol->v_sectorsize;
 1509         if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0) {
 1510                 meta->type = SII_T_RAID0;
 1511                 meta->raid0_disks = vol->v_disks_count;
 1512                 meta->raid1_disks = 0xff;
 1513         } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) {
 1514                 meta->type = SII_T_RAID1;
 1515                 meta->raid0_disks = 0xff;
 1516                 meta->raid1_disks = vol->v_disks_count;
 1517         } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) {
 1518                 meta->type = SII_T_RAID01;
 1519                 meta->raid0_disks = vol->v_disks_count / 2;
 1520                 meta->raid1_disks = 2;
 1521         } else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT ||
 1522             vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE) {
 1523                 meta->type = SII_T_JBOD;
 1524                 meta->raid0_disks = vol->v_disks_count;
 1525                 meta->raid1_disks = 0xff;
 1526         } else {
 1527                 meta->type = SII_T_RAID5;
 1528                 meta->raid0_disks = vol->v_disks_count;
 1529                 meta->raid1_disks = 0xff;
 1530         }
 1531         meta->generation = mdi->mdio_generation;
 1532         meta->raid_status = vol->v_dirty ? SII_S_ONLINE : SII_S_AVAILABLE;
 1533         for (i = 0; i < vol->v_disks_count; i++) {
 1534                 sd = &vol->v_subdisks[i];
 1535                 if (sd->sd_state == G_RAID_SUBDISK_S_STALE ||
 1536                     sd->sd_state == G_RAID_SUBDISK_S_RESYNC)
 1537                         meta->raid_status = SII_S_ONLINE;
 1538         }
 1539         meta->raid_location = mdi->mdio_location;
 1540         sii_meta_put_name(meta, vol->v_name);
 1541 
 1542         /* We are done. Print meta data and store them to disks. */
 1543         if (mdi->mdio_meta != NULL)
 1544                 free(mdi->mdio_meta, M_MD_SII);
 1545         mdi->mdio_meta = meta;
 1546         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 1547                 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data;
 1548                 if (disk->d_state != G_RAID_DISK_S_ACTIVE)
 1549                         continue;
 1550                 if (pd->pd_meta != NULL) {
 1551                         free(pd->pd_meta, M_MD_SII);
 1552                         pd->pd_meta = NULL;
 1553                 }
 1554                 pd->pd_meta = sii_meta_copy(meta);
 1555                 if ((sd = TAILQ_FIRST(&disk->d_subdisks)) != NULL) {
 1556                         if (sd->sd_state < G_RAID_SUBDISK_S_NEW)
 1557                                 pd->pd_meta->disk_status = SII_S_DROPPED;
 1558                         else if (sd->sd_state < G_RAID_SUBDISK_S_STALE) {
 1559                                 pd->pd_meta->disk_status = SII_S_REBUILD;
 1560                                 pd->pd_meta->rebuild_lba =
 1561                                     sd->sd_rebuild_pos / vol->v_sectorsize;
 1562                         } else
 1563                                 pd->pd_meta->disk_status = SII_S_CURRENT;
 1564                         if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) {
 1565                                 pd->pd_meta->disk_number = sd->sd_pos;
 1566                                 pd->pd_meta->raid0_ident = 0xff;
 1567                                 pd->pd_meta->raid1_ident = 0;
 1568                         } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) {
 1569                                 pd->pd_meta->disk_number = sd->sd_pos / meta->raid1_disks;
 1570                                 pd->pd_meta->raid0_ident = sd->sd_pos % meta->raid1_disks;
 1571                                 pd->pd_meta->raid1_ident = sd->sd_pos / meta->raid1_disks;
 1572                         } else {
 1573                                 pd->pd_meta->disk_number = sd->sd_pos;
 1574                                 pd->pd_meta->raid0_ident = 0;
 1575                                 pd->pd_meta->raid1_ident = 0xff;
 1576                         }
 1577                 }
 1578                 G_RAID_DEBUG(1, "Writing SiI metadata to %s",
 1579                     g_raid_get_diskname(disk));
 1580                 g_raid_md_sii_print(pd->pd_meta);
 1581                 sii_meta_write(disk->d_consumer, pd->pd_meta);
 1582         }
 1583         return (0);
 1584 }
 1585 
 1586 static int
 1587 g_raid_md_fail_disk_sii(struct g_raid_md_object *md,
 1588     struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
 1589 {
 1590         struct g_raid_softc *sc;
 1591         struct g_raid_md_sii_perdisk *pd;
 1592         struct g_raid_subdisk *sd;
 1593 
 1594         sc = md->mdo_softc;
 1595         pd = (struct g_raid_md_sii_perdisk *)tdisk->d_md_data;
 1596 
 1597         /* We can't fail disk that is not a part of array now. */
 1598         if (pd->pd_disk_pos < 0)
 1599                 return (-1);
 1600 
 1601         /*
 1602          * Mark disk as failed in metadata and try to write that metadata
 1603          * to the disk itself to prevent it's later resurrection as STALE.
 1604          */
 1605         if (tdisk->d_consumer) {
 1606                 if (pd->pd_meta) {
 1607                         pd->pd_meta->disk_status = SII_S_REMOVED;
 1608                         sii_meta_write(tdisk->d_consumer, pd->pd_meta);
 1609                 } else
 1610                         sii_meta_erase(tdisk->d_consumer);
 1611         }
 1612 
 1613         /* Change states. */
 1614         g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
 1615         TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
 1616                 g_raid_change_subdisk_state(sd,
 1617                     G_RAID_SUBDISK_S_FAILED);
 1618                 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
 1619                     G_RAID_EVENT_SUBDISK);
 1620         }
 1621 
 1622         /* Write updated metadata to remaining disks. */
 1623         g_raid_md_write_sii(md, NULL, NULL, tdisk);
 1624 
 1625         /* Check if anything left except placeholders. */
 1626         if (g_raid_ndisks(sc, -1) ==
 1627             g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
 1628                 g_raid_destroy_node(sc, 0);
 1629         else
 1630                 g_raid_md_sii_refill(sc);
 1631         return (0);
 1632 }
 1633 
 1634 static int
 1635 g_raid_md_free_disk_sii(struct g_raid_md_object *md,
 1636     struct g_raid_disk *disk)
 1637 {
 1638         struct g_raid_md_sii_perdisk *pd;
 1639 
 1640         pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data;
 1641         if (pd->pd_meta != NULL) {
 1642                 free(pd->pd_meta, M_MD_SII);
 1643                 pd->pd_meta = NULL;
 1644         }
 1645         free(pd, M_MD_SII);
 1646         disk->d_md_data = NULL;
 1647         return (0);
 1648 }
 1649 
 1650 static int
 1651 g_raid_md_free_sii(struct g_raid_md_object *md)
 1652 {
 1653         struct g_raid_md_sii_object *mdi;
 1654 
 1655         mdi = (struct g_raid_md_sii_object *)md;
 1656         if (!mdi->mdio_started) {
 1657                 mdi->mdio_started = 0;
 1658                 callout_stop(&mdi->mdio_start_co);
 1659                 G_RAID_DEBUG1(1, md->mdo_softc,
 1660                     "root_mount_rel %p", mdi->mdio_rootmount);
 1661                 root_mount_rel(mdi->mdio_rootmount);
 1662                 mdi->mdio_rootmount = NULL;
 1663         }
 1664         if (mdi->mdio_meta != NULL) {
 1665                 free(mdi->mdio_meta, M_MD_SII);
 1666                 mdi->mdio_meta = NULL;
 1667         }
 1668         return (0);
 1669 }
 1670 
 1671 G_RAID_MD_DECLARE(sii, "SiI");

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