summaryrefslogtreecommitdiffstats
path: root/sys/geom/raid/md_promise.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/geom/raid/md_promise.c')
-rw-r--r--sys/geom/raid/md_promise.c1940
1 files changed, 1940 insertions, 0 deletions
diff --git a/sys/geom/raid/md_promise.c b/sys/geom/raid/md_promise.c
new file mode 100644
index 0000000..b7bf070
--- /dev/null
+++ b/sys/geom/raid/md_promise.c
@@ -0,0 +1,1940 @@
+/*-
+ * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/bio.h>
+#include <sys/endian.h>
+#include <sys/kernel.h>
+#include <sys/kobj.h>
+#include <sys/limits.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/mutex.h>
+#include <sys/systm.h>
+#include <geom/geom.h>
+#include "geom/raid/g_raid.h"
+#include "g_raid_md_if.h"
+
+static MALLOC_DEFINE(M_MD_PROMISE, "md_promise_data", "GEOM_RAID Promise metadata");
+
+#define PROMISE_MAX_DISKS 8
+#define PROMISE_MAX_SUBDISKS 2
+#define PROMISE_META_OFFSET 14
+
+struct promise_raid_disk {
+ uint8_t flags; /* Subdisk status. */
+#define PROMISE_F_VALID 0x01
+#define PROMISE_F_ONLINE 0x02
+#define PROMISE_F_ASSIGNED 0x04
+#define PROMISE_F_SPARE 0x08
+#define PROMISE_F_DUPLICATE 0x10
+#define PROMISE_F_REDIR 0x20
+#define PROMISE_F_DOWN 0x40
+#define PROMISE_F_READY 0x80
+
+ uint8_t number; /* Position in a volume. */
+ uint8_t channel; /* ATA channel number. */
+ uint8_t device; /* ATA device number. */
+ uint64_t id __packed; /* Subdisk ID. */
+} __packed;
+
+struct promise_raid_conf {
+ char promise_id[24];
+#define PROMISE_MAGIC "Promise Technology, Inc."
+#define FREEBSD_MAGIC "FreeBSD ATA driver RAID "
+
+ uint32_t dummy_0;
+ uint64_t magic_0;
+#define PROMISE_MAGIC0(x) (((uint64_t)(x.channel) << 48) | \
+ ((uint64_t)(x.device != 0) << 56))
+ uint16_t magic_1;
+ uint32_t magic_2;
+ uint8_t filler1[470];
+
+ uint32_t integrity;
+#define PROMISE_I_VALID 0x00000080
+
+ struct promise_raid_disk disk; /* This subdisk info. */
+ uint32_t disk_offset; /* Subdisk offset. */
+ uint32_t disk_sectors; /* Subdisk size */
+ uint32_t rebuild_lba; /* Rebuild position. */
+ uint16_t generation; /* Generation number. */
+ uint8_t status; /* Volume status. */
+#define PROMISE_S_VALID 0x01
+#define PROMISE_S_ONLINE 0x02
+#define PROMISE_S_INITED 0x04
+#define PROMISE_S_READY 0x08
+#define PROMISE_S_DEGRADED 0x10
+#define PROMISE_S_MARKED 0x20
+#define PROMISE_S_MIGRATING 0x40
+#define PROMISE_S_FUNCTIONAL 0x80
+
+ uint8_t type; /* Voluem type. */
+#define PROMISE_T_RAID0 0x00
+#define PROMISE_T_RAID1 0x01
+#define PROMISE_T_RAID3 0x02
+#define PROMISE_T_RAID5 0x04
+#define PROMISE_T_SPAN 0x08
+#define PROMISE_T_JBOD 0x10
+
+ uint8_t total_disks; /* Disks in this volume. */
+ uint8_t stripe_shift; /* Strip size. */
+ uint8_t array_width; /* Number of RAID0 stripes. */
+ uint8_t array_number; /* Global volume number. */
+ uint32_t total_sectors; /* Volume size. */
+ uint16_t cylinders; /* Volume geometry: C. */
+ uint8_t heads; /* Volume geometry: H. */
+ uint8_t sectors; /* Volume geometry: S. */
+ uint64_t volume_id __packed; /* Volume ID, */
+ struct promise_raid_disk disks[PROMISE_MAX_DISKS];
+ /* Subdisks in this volume. */
+ char name[32]; /* Volume label. */
+
+ uint32_t filler2[8];
+ uint32_t magic_3; /* Something related to rebuild. */
+ uint64_t rebuild_lba64; /* Per-volume rebuild position. */
+ uint32_t magic_4;
+ uint32_t magic_5;
+ uint32_t filler3[325];
+ uint32_t checksum;
+} __packed;
+
+struct g_raid_md_promise_perdisk {
+ int pd_updated;
+ int pd_subdisks;
+ struct promise_raid_conf *pd_meta[PROMISE_MAX_SUBDISKS];
+};
+
+struct g_raid_md_promise_pervolume {
+ struct promise_raid_conf *pv_meta;
+ uint64_t pv_id;
+ uint16_t pv_generation;
+ int pv_disks_present;
+ int pv_started;
+ struct callout pv_start_co; /* STARTING state timer. */
+};
+
+static g_raid_md_create_t g_raid_md_create_promise;
+static g_raid_md_taste_t g_raid_md_taste_promise;
+static g_raid_md_event_t g_raid_md_event_promise;
+static g_raid_md_volume_event_t g_raid_md_volume_event_promise;
+static g_raid_md_ctl_t g_raid_md_ctl_promise;
+static g_raid_md_write_t g_raid_md_write_promise;
+static g_raid_md_fail_disk_t g_raid_md_fail_disk_promise;
+static g_raid_md_free_disk_t g_raid_md_free_disk_promise;
+static g_raid_md_free_volume_t g_raid_md_free_volume_promise;
+static g_raid_md_free_t g_raid_md_free_promise;
+
+static kobj_method_t g_raid_md_promise_methods[] = {
+ KOBJMETHOD(g_raid_md_create, g_raid_md_create_promise),
+ KOBJMETHOD(g_raid_md_taste, g_raid_md_taste_promise),
+ KOBJMETHOD(g_raid_md_event, g_raid_md_event_promise),
+ KOBJMETHOD(g_raid_md_volume_event, g_raid_md_volume_event_promise),
+ KOBJMETHOD(g_raid_md_ctl, g_raid_md_ctl_promise),
+ KOBJMETHOD(g_raid_md_write, g_raid_md_write_promise),
+ KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_promise),
+ KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_promise),
+ KOBJMETHOD(g_raid_md_free_volume, g_raid_md_free_volume_promise),
+ KOBJMETHOD(g_raid_md_free, g_raid_md_free_promise),
+ { 0, 0 }
+};
+
+static struct g_raid_md_class g_raid_md_promise_class = {
+ "Promise",
+ g_raid_md_promise_methods,
+ sizeof(struct g_raid_md_object),
+ .mdc_priority = 100
+};
+
+
+static void
+g_raid_md_promise_print(struct promise_raid_conf *meta)
+{
+ int i;
+
+ if (g_raid_debug < 1)
+ return;
+
+ printf("********* ATA Promise Metadata *********\n");
+ printf("promise_id <%.24s>\n", meta->promise_id);
+ printf("disk %02x %02x %02x %02x %016jx\n",
+ meta->disk.flags, meta->disk.number, meta->disk.channel,
+ meta->disk.device, meta->disk.id);
+ printf("disk_offset %u\n", meta->disk_offset);
+ printf("disk_sectors %u\n", meta->disk_sectors);
+ printf("rebuild_lba %u\n", meta->rebuild_lba);
+ printf("generation %u\n", meta->generation);
+ printf("status 0x%02x\n", meta->status);
+ printf("type %u\n", meta->type);
+ printf("total_disks %u\n", meta->total_disks);
+ printf("stripe_shift %u\n", meta->stripe_shift);
+ printf("array_width %u\n", meta->array_width);
+ printf("array_number %u\n", meta->array_number);
+ printf("total_sectors %u\n", meta->total_sectors);
+ printf("cylinders %u\n", meta->cylinders);
+ printf("heads %u\n", meta->heads);
+ printf("sectors %u\n", meta->sectors);
+ printf("volume_id 0x%016jx\n", meta->volume_id);
+ printf("disks:\n");
+ for (i = 0; i < PROMISE_MAX_DISKS; i++ ) {
+ printf(" %02x %02x %02x %02x %016jx\n",
+ meta->disks[i].flags, meta->disks[i].number,
+ meta->disks[i].channel, meta->disks[i].device,
+ meta->disks[i].id);
+ }
+ printf("name <%.32s>\n", meta->name);
+ printf("magic_3 0x%08x\n", meta->magic_3);
+ printf("rebuild_lba64 %ju\n", meta->rebuild_lba64);
+ printf("magic_4 0x%08x\n", meta->magic_4);
+ printf("magic_5 0x%08x\n", meta->magic_5);
+ printf("=================================================\n");
+}
+
+static struct promise_raid_conf *
+promise_meta_copy(struct promise_raid_conf *meta)
+{
+ struct promise_raid_conf *nmeta;
+
+ nmeta = malloc(sizeof(*nmeta), M_MD_PROMISE, M_WAITOK);
+ memcpy(nmeta, meta, sizeof(*nmeta));
+ return (nmeta);
+}
+
+static int
+promise_meta_find_disk(struct promise_raid_conf *meta, uint64_t id)
+{
+ int pos;
+
+ for (pos = 0; pos < meta->total_disks; pos++) {
+ if (meta->disks[pos].id == id)
+ return (pos);
+ }
+ return (-1);
+}
+
+static int
+promise_meta_unused_range(struct promise_raid_conf **metaarr, int nsd,
+ uint32_t sectors, uint32_t *off, uint32_t *size)
+{
+ uint32_t coff, csize;
+ int i, j;
+
+ sectors -= 131072;
+ *off = 0;
+ *size = 0;
+ coff = 0;
+ csize = sectors;
+ i = 0;
+ while (1) {
+ for (j = 0; j < nsd; j++) {
+ if (metaarr[j]->disk_offset >= coff) {
+ csize = MIN(csize,
+ metaarr[j]->disk_offset - coff);
+ }
+ }
+ if (csize > *size) {
+ *off = coff;
+ *size = csize;
+ }
+ if (i >= nsd)
+ break;
+ coff = metaarr[i]->disk_offset + metaarr[i]->disk_sectors;
+ csize = sectors - coff;
+ i++;
+ };
+ return ((*size > 0) ? 1 : 0);
+}
+
+static int
+promise_meta_translate_disk(struct g_raid_volume *vol, int md_disk_pos)
+{
+ int disk_pos, width;
+
+ if (md_disk_pos >= 0 && vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) {
+ width = vol->v_disks_count / 2;
+ disk_pos = (md_disk_pos / width) +
+ (md_disk_pos % width) * width;
+ } else
+ disk_pos = md_disk_pos;
+ return (disk_pos);
+}
+
+static void
+promise_meta_get_name(struct promise_raid_conf *meta, char *buf)
+{
+ int i;
+
+ strncpy(buf, meta->name, 32);
+ buf[32] = 0;
+ for (i = 31; i >= 0; i--) {
+ if (buf[i] > 0x20)
+ break;
+ buf[i] = 0;
+ }
+}
+
+static void
+promise_meta_put_name(struct promise_raid_conf *meta, char *buf)
+{
+
+ memset(meta->name, 0x20, 32);
+ memcpy(meta->name, buf, MIN(strlen(buf), 32));
+}
+
+static int
+promise_meta_read(struct g_consumer *cp, struct promise_raid_conf **metaarr)
+{
+ struct g_provider *pp;
+ struct promise_raid_conf *meta;
+ char *buf;
+ int error, i, subdisks;
+ uint32_t checksum, *ptr;
+
+ pp = cp->provider;
+ subdisks = 0;
+next:
+ /* Read metadata block. */
+ buf = g_read_data(cp, pp->mediasize - pp->sectorsize *
+ (63 - subdisks * PROMISE_META_OFFSET),
+ pp->sectorsize * 4, &error);
+ if (buf == NULL) {
+ G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).",
+ pp->name, error);
+ return (subdisks);
+ }
+ meta = (struct promise_raid_conf *)buf;
+
+ /* Check if this is an Promise RAID struct */
+ if (strncmp(meta->promise_id, PROMISE_MAGIC, strlen(PROMISE_MAGIC)) &&
+ strncmp(meta->promise_id, FREEBSD_MAGIC, strlen(FREEBSD_MAGIC))) {
+ if (subdisks == 0)
+ G_RAID_DEBUG(1,
+ "Promise signature check failed on %s", pp->name);
+ g_free(buf);
+ return (subdisks);
+ }
+ meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK);
+ memcpy(meta, buf, MIN(sizeof(*meta), pp->sectorsize * 4));
+ g_free(buf);
+
+ /* Check metadata checksum. */
+ for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++)
+ checksum += *ptr++;
+ if (checksum != meta->checksum) {
+ G_RAID_DEBUG(1, "Promise checksum check failed on %s", pp->name);
+ free(meta, M_MD_PROMISE);
+ return (subdisks);
+ }
+
+ if ((meta->integrity & PROMISE_I_VALID) == 0) {
+ G_RAID_DEBUG(1, "Promise metadata is invalid on %s", pp->name);
+ free(meta, M_MD_PROMISE);
+ return (subdisks);
+ }
+
+ if (meta->total_disks > PROMISE_MAX_DISKS) {
+ G_RAID_DEBUG(1, "Wrong number of disks on %s (%d)",
+ pp->name, meta->total_disks);
+ free(meta, M_MD_PROMISE);
+ return (subdisks);
+ }
+
+ /* Save this part and look for next. */
+ *metaarr = meta;
+ metaarr++;
+ subdisks++;
+ if (subdisks < PROMISE_MAX_SUBDISKS)
+ goto next;
+
+ return (subdisks);
+}
+
+static int
+promise_meta_write(struct g_consumer *cp,
+ struct promise_raid_conf **metaarr, int nsd)
+{
+ struct g_provider *pp;
+ struct promise_raid_conf *meta;
+ char *buf;
+ int error, i, subdisk, fake;
+ uint32_t checksum, *ptr, off, size;
+
+ pp = cp->provider;
+ subdisk = 0;
+ fake = 0;
+next:
+ buf = malloc(pp->sectorsize * 4, M_MD_PROMISE, M_WAITOK | M_ZERO);
+ meta = NULL;
+ if (subdisk < nsd) {
+ meta = metaarr[subdisk];
+ } else if (!fake && promise_meta_unused_range(metaarr, nsd,
+ cp->provider->mediasize / cp->provider->sectorsize,
+ &off, &size)) {
+ /* Optionally add record for unused space. */
+ meta = (struct promise_raid_conf *)buf;
+ memcpy(&meta->promise_id[0], PROMISE_MAGIC, sizeof(PROMISE_MAGIC));
+ meta->dummy_0 = 0x00020000;
+ meta->integrity = PROMISE_I_VALID;
+ meta->disk.flags = PROMISE_F_ONLINE | PROMISE_F_VALID;
+ meta->disk.number = 0xff;
+ arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0);
+ meta->disk_offset = off;
+ meta->disk_sectors = size;
+ meta->rebuild_lba = UINT32_MAX;
+ fake = 1;
+ }
+ if (meta != NULL) {
+ /* Recalculate checksum for case if metadata were changed. */
+ meta->checksum = 0;
+ for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++)
+ checksum += *ptr++;
+ meta->checksum = checksum;
+ memcpy(buf, meta, MIN(pp->sectorsize * 4, sizeof(*meta)));
+ }
+ error = g_write_data(cp, pp->mediasize - pp->sectorsize *
+ (63 - subdisk * PROMISE_META_OFFSET),
+ buf, pp->sectorsize * 4);
+ if (error != 0) {
+ G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
+ pp->name, error);
+ }
+ free(buf, M_MD_PROMISE);
+
+ subdisk++;
+ if (subdisk < PROMISE_MAX_SUBDISKS)
+ goto next;
+
+ return (error);
+}
+
+static int
+promise_meta_erase(struct g_consumer *cp)
+{
+ struct g_provider *pp;
+ char *buf;
+ int error, subdisk;
+
+ pp = cp->provider;
+ buf = malloc(4 * pp->sectorsize, M_MD_PROMISE, M_WAITOK | M_ZERO);
+ for (subdisk = 0; subdisk < PROMISE_MAX_SUBDISKS; subdisk++) {
+ error = g_write_data(cp, pp->mediasize - pp->sectorsize *
+ (63 - subdisk * PROMISE_META_OFFSET),
+ buf, 4 * pp->sectorsize);
+ if (error != 0) {
+ G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
+ pp->name, error);
+ }
+ }
+ free(buf, M_MD_PROMISE);
+ return (error);
+}
+
+static int
+promise_meta_write_spare(struct g_consumer *cp)
+{
+ struct promise_raid_conf *meta;
+ int error;
+
+ meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO);
+ memcpy(&meta->promise_id[0], PROMISE_MAGIC, sizeof(PROMISE_MAGIC));
+ meta->dummy_0 = 0x00020000;
+ meta->integrity = PROMISE_I_VALID;
+ meta->disk.flags = PROMISE_F_SPARE | PROMISE_F_ONLINE | PROMISE_F_VALID;
+ meta->disk.number = 0xff;
+ arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0);
+ meta->disk_sectors = cp->provider->mediasize / cp->provider->sectorsize;
+ meta->disk_sectors -= 131072;
+ meta->rebuild_lba = UINT32_MAX;
+ error = promise_meta_write(cp, &meta, 1);
+ free(meta, M_MD_PROMISE);
+ return (error);
+}
+
+static struct g_raid_volume *
+g_raid_md_promise_get_volume(struct g_raid_softc *sc, uint64_t id)
+{
+ struct g_raid_volume *vol;
+ struct g_raid_md_promise_pervolume *pv;
+
+ TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
+ pv = vol->v_md_data;
+ if (pv->pv_id == id)
+ break;
+ }
+ return (vol);
+}
+
+static int
+g_raid_md_promise_purge_volumes(struct g_raid_softc *sc)
+{
+ struct g_raid_volume *vol, *tvol;
+ struct g_raid_md_promise_pervolume *pv;
+ int i, res;
+
+ res = 0;
+ TAILQ_FOREACH_SAFE(vol, &sc->sc_volumes, v_next, tvol) {
+ pv = vol->v_md_data;
+ if (!pv->pv_started || vol->v_stopping)
+ continue;
+ for (i = 0; i < vol->v_disks_count; i++) {
+ if (vol->v_subdisks[i].sd_state != G_RAID_SUBDISK_S_NONE)
+ break;
+ }
+ if (i >= vol->v_disks_count) {
+ g_raid_destroy_volume(vol);
+ res = 1;
+ }
+ }
+ return (res);
+}
+
+static int
+g_raid_md_promise_purge_disks(struct g_raid_softc *sc)
+{
+ struct g_raid_disk *disk, *tdisk;
+ struct g_raid_volume *vol;
+ struct g_raid_md_promise_perdisk *pd;
+ int i, j, res;
+
+ res = 0;
+ TAILQ_FOREACH_SAFE(disk, &sc->sc_disks, d_next, tdisk) {
+ if (disk->d_state == G_RAID_DISK_S_SPARE)
+ continue;
+ pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
+
+ /* Scan for deleted volumes. */
+ for (i = 0; i < pd->pd_subdisks; ) {
+ vol = g_raid_md_promise_get_volume(sc,
+ pd->pd_meta[i]->volume_id);
+ if (vol != NULL && !vol->v_stopping) {
+ i++;
+ continue;
+ }
+ free(pd->pd_meta[i], M_MD_PROMISE);
+ for (j = i; j < pd->pd_subdisks - 1; j++)
+ pd->pd_meta[j] = pd->pd_meta[j + 1];
+ pd->pd_meta[PROMISE_MAX_SUBDISKS - 1] = NULL;
+ pd->pd_subdisks--;
+ pd->pd_updated = 1;
+ }
+
+ /* If there is no metadata left - erase and delete disk. */
+ if (pd->pd_subdisks == 0) {
+ promise_meta_erase(disk->d_consumer);
+ g_raid_destroy_disk(disk);
+ res = 1;
+ }
+ }
+ return (res);
+}
+
+static int
+g_raid_md_promise_supported(int level, int qual, int disks, int force)
+{
+
+ if (disks > PROMISE_MAX_DISKS)
+ return (0);
+ switch (level) {
+ case G_RAID_VOLUME_RL_RAID0:
+ if (disks < 1)
+ return (0);
+ if (!force && disks < 2)
+ return (0);
+ break;
+ case G_RAID_VOLUME_RL_RAID1:
+ if (disks < 1)
+ return (0);
+ if (!force && (disks != 2))
+ return (0);
+ break;
+ case G_RAID_VOLUME_RL_RAID1E:
+ if (disks < 2)
+ return (0);
+ if (disks % 2 != 0)
+ return (0);
+ if (!force && (disks != 4))
+ return (0);
+ break;
+ case G_RAID_VOLUME_RL_SINGLE:
+ if (disks != 1)
+ return (0);
+ break;
+ case G_RAID_VOLUME_RL_CONCAT:
+ if (disks < 2)
+ return (0);
+ break;
+ case G_RAID_VOLUME_RL_RAID5:
+ if (disks < 3)
+ return (0);
+ break;
+ default:
+ return (0);
+ }
+ if (qual != G_RAID_VOLUME_RLQ_NONE)
+ return (0);
+ return (1);
+}
+
+static int
+g_raid_md_promise_start_disk(struct g_raid_disk *disk, int sdn,
+ struct g_raid_volume *vol)
+{
+ struct g_raid_softc *sc;
+ struct g_raid_subdisk *sd;
+ struct g_raid_md_promise_perdisk *pd;
+ struct g_raid_md_promise_pervolume *pv;
+ struct promise_raid_conf *meta;
+ off_t size;
+ int disk_pos, md_disk_pos, i, resurrection = 0;
+ uint32_t eoff, esize;
+
+ sc = disk->d_softc;
+ pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
+
+ pv = vol->v_md_data;
+ meta = pv->pv_meta;
+
+ if (sdn >= 0) {
+ /* Find disk position in metadata by it's serial. */
+ md_disk_pos = promise_meta_find_disk(meta, pd->pd_meta[sdn]->disk.id);
+ /* For RAID0+1 we need to translate order. */
+ disk_pos = promise_meta_translate_disk(vol, md_disk_pos);
+ } else {
+ md_disk_pos = -1;
+ disk_pos = -1;
+ }
+ if (disk_pos < 0) {
+ G_RAID_DEBUG1(1, sc, "Disk %s is not part of the volume %s",
+ g_raid_get_diskname(disk), vol->v_name);
+ /* Failed stale disk is useless for us. */
+ if (sdn >= 0 &&
+ pd->pd_meta[sdn]->disk.flags & PROMISE_F_DOWN) {
+ g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED);
+ return (0);
+ }
+ /* If we were given specific metadata subdisk - erase it. */
+ if (sdn >= 0) {
+ free(pd->pd_meta[sdn], M_MD_PROMISE);
+ for (i = sdn; i < pd->pd_subdisks - 1; i++)
+ pd->pd_meta[i] = pd->pd_meta[i + 1];
+ pd->pd_meta[PROMISE_MAX_SUBDISKS - 1] = NULL;
+ pd->pd_subdisks--;
+ }
+ /* If we are in the start process, that's all for now. */
+ if (!pv->pv_started)
+ goto nofit;
+ /*
+ * If we have already started - try to get use of the disk.
+ * Try to replace OFFLINE disks first, then FAILED.
+ */
+ promise_meta_unused_range(pd->pd_meta, pd->pd_subdisks,
+ disk->d_consumer->provider->mediasize /
+ disk->d_consumer->provider->sectorsize,
+ &eoff, &esize);
+ if (esize == 0) {
+ G_RAID_DEBUG1(1, sc, "No free space on disk %s",
+ g_raid_get_diskname(disk));
+ goto nofit;
+ }
+ size = INT64_MAX;
+ for (i = 0; i < vol->v_disks_count; i++) {
+ sd = &vol->v_subdisks[i];
+ if (sd->sd_state != G_RAID_SUBDISK_S_NONE)
+ size = sd->sd_size;
+ if (sd->sd_state <= G_RAID_SUBDISK_S_FAILED &&
+ (disk_pos < 0 ||
+ vol->v_subdisks[i].sd_state < sd->sd_state))
+ disk_pos = i;
+ }
+ if (disk_pos >= 0 &&
+ vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT &&
+ (off_t)esize * 512 < size) {
+ G_RAID_DEBUG1(1, sc, "Disk %s free space "
+ "is too small (%ju < %ju)",
+ g_raid_get_diskname(disk),
+ (off_t)esize * 512, size);
+ disk_pos = -1;
+ }
+ if (disk_pos >= 0) {
+ if (vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT)
+ esize = size / 512;
+ /* For RAID0+1 we need to translate order. */
+ md_disk_pos = promise_meta_translate_disk(vol, disk_pos);
+ } else {
+nofit:
+ if (pd->pd_subdisks == 0) {
+ g_raid_change_disk_state(disk,
+ G_RAID_DISK_S_SPARE);
+ }
+ return (0);
+ }
+ G_RAID_DEBUG1(1, sc, "Disk %s takes pos %d in the volume %s",
+ g_raid_get_diskname(disk), disk_pos, vol->v_name);
+ resurrection = 1;
+ }
+
+ sd = &vol->v_subdisks[disk_pos];
+
+ if (resurrection && sd->sd_disk != NULL) {
+ g_raid_change_disk_state(sd->sd_disk,
+ G_RAID_DISK_S_STALE_FAILED);
+ TAILQ_REMOVE(&sd->sd_disk->d_subdisks,
+ sd, sd_next);
+ }
+ vol->v_subdisks[disk_pos].sd_disk = disk;
+ TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
+
+ /* Welcome the new disk. */
+ if (resurrection)
+ g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
+ else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN)
+ g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
+ else
+ g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
+
+ if (resurrection) {
+ sd->sd_offset = (off_t)eoff * 512;
+ sd->sd_size = (off_t)esize * 512;
+ } else {
+ sd->sd_offset = (off_t)pd->pd_meta[sdn]->disk_offset * 512;
+ sd->sd_size = (off_t)pd->pd_meta[sdn]->disk_sectors * 512;
+ }
+
+ if (resurrection) {
+ /* Stale disk, almost same as new. */
+ g_raid_change_subdisk_state(sd,
+ G_RAID_SUBDISK_S_NEW);
+ } else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN) {
+ /* Failed disk. */
+ g_raid_change_subdisk_state(sd,
+ G_RAID_SUBDISK_S_FAILED);
+ } else if (meta->disks[md_disk_pos].flags & PROMISE_F_REDIR) {
+ /* Rebuilding disk. */
+ g_raid_change_subdisk_state(sd,
+ G_RAID_SUBDISK_S_REBUILD);
+ if (pd->pd_meta[sdn]->generation != meta->generation)
+ sd->sd_rebuild_pos = 0;
+ else {
+ sd->sd_rebuild_pos =
+ (off_t)pd->pd_meta[sdn]->rebuild_lba * 512;
+ }
+ } else if (!(meta->disks[md_disk_pos].flags & PROMISE_F_ONLINE)) {
+ /* Rebuilding disk. */
+ g_raid_change_subdisk_state(sd,
+ G_RAID_SUBDISK_S_NEW);
+ } else if (pd->pd_meta[sdn]->generation != meta->generation ||
+ (meta->status & PROMISE_S_MARKED)) {
+ /* Stale disk or dirty volume (unclean shutdown). */
+ g_raid_change_subdisk_state(sd,
+ G_RAID_SUBDISK_S_STALE);
+ } else {
+ /* Up to date disk. */
+ g_raid_change_subdisk_state(sd,
+ G_RAID_SUBDISK_S_ACTIVE);
+ }
+ g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
+ G_RAID_EVENT_SUBDISK);
+
+ return (resurrection);
+}
+
+static void
+g_raid_md_promise_refill(struct g_raid_softc *sc)
+{
+ struct g_raid_volume *vol;
+ struct g_raid_subdisk *sd;
+ struct g_raid_disk *disk;
+ struct g_raid_md_object *md;
+ struct g_raid_md_promise_perdisk *pd;
+ struct g_raid_md_promise_pervolume *pv;
+ int update, updated, i, bad;
+
+ md = sc->sc_md;
+restart:
+ updated = 0;
+ TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
+ pv = vol->v_md_data;
+ if (!pv->pv_started || vol->v_stopping)
+ continue;
+
+ /* Search for subdisk that needs replacement. */
+ bad = 0;
+ for (i = 0; i < vol->v_disks_count; i++) {
+ sd = &vol->v_subdisks[i];
+ if (sd->sd_state == G_RAID_SUBDISK_S_NONE ||
+ sd->sd_state == G_RAID_SUBDISK_S_FAILED)
+ bad = 1;
+ }
+ if (!bad)
+ continue;
+
+ G_RAID_DEBUG1(1, sc, "Volume %s is not complete, "
+ "trying to refill.", vol->v_name);
+
+ TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
+ /* Skip failed. */
+ if (disk->d_state < G_RAID_DISK_S_SPARE)
+ continue;
+ /* Skip already used by this volume. */
+ for (i = 0; i < vol->v_disks_count; i++) {
+ sd = &vol->v_subdisks[i];
+ if (sd->sd_disk == disk)
+ break;
+ }
+ if (i < vol->v_disks_count)
+ continue;
+
+ /* Try to use disk if it has empty extents. */
+ pd = disk->d_md_data;
+ if (pd->pd_subdisks < PROMISE_MAX_SUBDISKS) {
+ update =
+ g_raid_md_promise_start_disk(disk, -1, vol);
+ } else
+ update = 0;
+ if (update) {
+ g_raid_md_write_promise(md, vol, NULL, disk);
+ break;
+ }
+ updated += update;
+ }
+ }
+ if (updated)
+ goto restart;
+}
+
+static void
+g_raid_md_promise_start(struct g_raid_volume *vol)
+{
+ struct g_raid_softc *sc;
+ struct g_raid_subdisk *sd;
+ struct g_raid_disk *disk;
+ struct g_raid_md_object *md;
+ struct g_raid_md_promise_perdisk *pd;
+ struct g_raid_md_promise_pervolume *pv;
+ struct promise_raid_conf *meta;
+ int i;
+
+ sc = vol->v_softc;
+ md = sc->sc_md;
+ pv = vol->v_md_data;
+ meta = pv->pv_meta;
+
+ if (meta->type == PROMISE_T_RAID0)
+ vol->v_raid_level = G_RAID_VOLUME_RL_RAID0;
+ else if (meta->type == PROMISE_T_RAID1) {
+ if (meta->array_width == 1)
+ vol->v_raid_level = G_RAID_VOLUME_RL_RAID1;
+ else
+ vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
+ } else if (meta->type == PROMISE_T_RAID3)
+ vol->v_raid_level = G_RAID_VOLUME_RL_RAID3;
+ else if (meta->type == PROMISE_T_RAID5)
+ vol->v_raid_level = G_RAID_VOLUME_RL_RAID5;
+ else if (meta->type == PROMISE_T_SPAN)
+ vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT;
+ else if (meta->type == PROMISE_T_JBOD)
+ vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE;
+ else
+ vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN;
+ vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE;
+ vol->v_strip_size = 512 << meta->stripe_shift; //ZZZ
+ vol->v_disks_count = meta->total_disks;
+ vol->v_mediasize = (off_t)meta->total_sectors * 512; //ZZZ
+ vol->v_sectorsize = 512; //ZZZ
+ for (i = 0; i < vol->v_disks_count; i++) {
+ sd = &vol->v_subdisks[i];
+ sd->sd_offset = (off_t)meta->disk_offset * 512; //ZZZ
+ sd->sd_size = (off_t)meta->disk_sectors * 512; //ZZZ
+ }
+ g_raid_start_volume(vol);
+
+ /* Make all disks found till the moment take their places. */
+ TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
+ pd = disk->d_md_data;
+ for (i = 0; i < pd->pd_subdisks; i++) {
+ if (pd->pd_meta[i]->volume_id == meta->volume_id)
+ g_raid_md_promise_start_disk(disk, i, vol);
+ }
+ }
+
+ pv->pv_started = 1;
+ callout_stop(&pv->pv_start_co);
+ G_RAID_DEBUG1(0, sc, "Volume started.");
+ g_raid_md_write_promise(md, vol, NULL, NULL);
+
+ /* Pickup any STALE/SPARE disks to refill array if needed. */
+ g_raid_md_promise_refill(sc);
+
+ g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME);
+}
+
+static void
+g_raid_promise_go(void *arg)
+{
+ struct g_raid_volume *vol;
+ struct g_raid_softc *sc;
+ struct g_raid_md_promise_pervolume *pv;
+
+ vol = arg;
+ pv = vol->v_md_data;
+ sc = vol->v_softc;
+ if (!pv->pv_started) {
+ G_RAID_DEBUG1(0, sc, "Force volume start due to timeout.");
+ g_raid_event_send(vol, G_RAID_VOLUME_E_STARTMD,
+ G_RAID_EVENT_VOLUME);
+ }
+}
+
+static void
+g_raid_md_promise_new_disk(struct g_raid_disk *disk)
+{
+ struct g_raid_softc *sc;
+ struct g_raid_md_object *md;
+ struct promise_raid_conf *pdmeta;
+ struct g_raid_md_promise_perdisk *pd;
+ struct g_raid_md_promise_pervolume *pv;
+ struct g_raid_volume *vol;
+ int i;
+ char buf[33];
+
+ sc = disk->d_softc;
+ md = sc->sc_md;
+ pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
+
+ if (pd->pd_subdisks == 0) {
+ g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
+ g_raid_md_promise_refill(sc);
+ return;
+ }
+
+ for (i = 0; i < pd->pd_subdisks; i++) {
+ pdmeta = pd->pd_meta[i];
+
+ /* Look for volume with matching ID. */
+ vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id);
+ if (vol == NULL) {
+ promise_meta_get_name(pdmeta, buf);
+ vol = g_raid_create_volume(sc, buf, pdmeta->array_number);
+ pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO);
+ pv->pv_id = pdmeta->volume_id;
+ vol->v_md_data = pv;
+ callout_init(&pv->pv_start_co, 1);
+ callout_reset(&pv->pv_start_co,
+ g_raid_start_timeout * hz,
+ g_raid_promise_go, vol);
+ } else
+ pv = vol->v_md_data;
+
+ /* If we haven't started yet - check metadata freshness. */
+ if (pv->pv_meta == NULL || !pv->pv_started) {
+ if (pv->pv_meta == NULL ||
+ ((int16_t)(pdmeta->generation - pv->pv_generation)) > 0) {
+ G_RAID_DEBUG1(1, sc, "Newer disk");
+ if (pv->pv_meta != NULL)
+ free(pv->pv_meta, M_MD_PROMISE);
+ pv->pv_meta = promise_meta_copy(pdmeta);
+ pv->pv_generation = pv->pv_meta->generation;
+ pv->pv_disks_present = 1;
+ } else if (pdmeta->generation == pv->pv_generation) {
+ pv->pv_disks_present++;
+ G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)",
+ pv->pv_disks_present,
+ pv->pv_meta->total_disks);
+ } else {
+ G_RAID_DEBUG1(1, sc, "Older disk");
+ }
+ }
+ }
+
+ for (i = 0; i < pd->pd_subdisks; i++) {
+ pdmeta = pd->pd_meta[i];
+
+ /* Look for volume with matching ID. */
+ vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id);
+ if (vol == NULL)
+ continue;
+ pv = vol->v_md_data;
+
+ if (pv->pv_started) {
+ if (g_raid_md_promise_start_disk(disk, i, vol))
+ g_raid_md_write_promise(md, vol, NULL, NULL);
+ } else {
+ /* If we collected all needed disks - start array. */
+ if (pv->pv_disks_present == pv->pv_meta->total_disks)
+ g_raid_md_promise_start(vol);
+ }
+ }
+}
+
+static int
+g_raid_md_create_promise(struct g_raid_md_object *md, struct g_class *mp,
+ struct g_geom **gp)
+{
+ struct g_geom *geom;
+ struct g_raid_softc *sc;
+
+ /* Search for existing node. */
+ LIST_FOREACH(geom, &mp->geom, geom) {
+ sc = geom->softc;
+ if (sc == NULL)
+ continue;
+ if (sc->sc_stopping != 0)
+ continue;
+ if (sc->sc_md->mdo_class != md->mdo_class)
+ continue;
+ break;
+ }
+ if (geom != NULL) {
+ *gp = geom;
+ return (G_RAID_MD_TASTE_EXISTING);
+ }
+
+ /* Create new one if not found. */
+ sc = g_raid_create_node(mp, "Promise", md);
+ if (sc == NULL)
+ return (G_RAID_MD_TASTE_FAIL);
+ md->mdo_softc = sc;
+ *gp = sc->sc_geom;
+ return (G_RAID_MD_TASTE_NEW);
+}
+
+static int
+g_raid_md_taste_promise(struct g_raid_md_object *md, struct g_class *mp,
+ struct g_consumer *cp, struct g_geom **gp)
+{
+ struct g_consumer *rcp;
+ struct g_provider *pp;
+ struct g_raid_softc *sc;
+ struct g_raid_disk *disk;
+ struct promise_raid_conf *meta, *metaarr[4];
+ struct g_raid_md_promise_perdisk *pd;
+ struct g_geom *geom;
+ int error, i, j, result, len, subdisks;
+ char name[16];
+ uint16_t vendor;
+
+ G_RAID_DEBUG(1, "Tasting Promise on %s", cp->provider->name);
+ pp = cp->provider;
+
+ /* Read metadata from device. */
+ meta = NULL;
+ vendor = 0xffff;
+ if (g_access(cp, 1, 0, 0) != 0)
+ return (G_RAID_MD_TASTE_FAIL);
+ g_topology_unlock();
+ len = 2;
+ if (pp->geom->rank == 1)
+ g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor);
+ subdisks = promise_meta_read(cp, metaarr);
+ g_topology_lock();
+ g_access(cp, -1, 0, 0);
+ if (subdisks == 0) {
+ if (g_raid_aggressive_spare) {
+ if (vendor == 0x105a || vendor == 0x1002) {
+ G_RAID_DEBUG(1,
+ "No Promise metadata, forcing spare.");
+ goto search;
+ } else {
+ G_RAID_DEBUG(1,
+ "Promise/ATI vendor mismatch "
+ "0x%04x != 0x105a/0x1002",
+ vendor);
+ }
+ }
+ return (G_RAID_MD_TASTE_FAIL);
+ }
+
+ /* Metadata valid. Print it. */
+ for (i = 0; i < subdisks; i++)
+ g_raid_md_promise_print(metaarr[i]);
+
+ /* Purge meaningless (empty/spare) records. */
+ for (i = 0; i < subdisks; ) {
+ if (metaarr[i]->disk.flags & PROMISE_F_ASSIGNED) {
+ i++;
+ continue;
+ }
+ free(metaarr[i], M_MD_PROMISE);
+ for (j = i; j < subdisks - 1; j++)
+ metaarr[i] = metaarr[j + 1];
+ metaarr[PROMISE_MAX_SUBDISKS - 1] = NULL;
+ subdisks--;
+ }
+
+search:
+ /* Search for matching node. */
+ sc = NULL;
+ LIST_FOREACH(geom, &mp->geom, geom) {
+ sc = geom->softc;
+ if (sc == NULL)
+ continue;
+ if (sc->sc_stopping != 0)
+ continue;
+ if (sc->sc_md->mdo_class != md->mdo_class)
+ continue;
+ break;
+ }
+
+ /* Found matching node. */
+ if (geom != NULL) {
+ G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
+ result = G_RAID_MD_TASTE_EXISTING;
+
+ } else { /* Not found matching node -- create one. */
+ result = G_RAID_MD_TASTE_NEW;
+ snprintf(name, sizeof(name), "Promise");
+ sc = g_raid_create_node(mp, name, md);
+ md->mdo_softc = sc;
+ geom = sc->sc_geom;
+ }
+
+ rcp = g_new_consumer(geom);
+ g_attach(rcp, pp);
+ if (g_access(rcp, 1, 1, 1) != 0)
+ ; //goto fail1;
+
+ g_topology_unlock();
+ sx_xlock(&sc->sc_lock);
+
+ pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO);
+ pd->pd_subdisks = subdisks;
+ for (i = 0; i < subdisks; i++)
+ pd->pd_meta[i] = metaarr[i];
+ disk = g_raid_create_disk(sc);
+ disk->d_md_data = (void *)pd;
+ disk->d_consumer = rcp;
+ rcp->private = disk;
+
+ /* Read kernel dumping information. */
+ disk->d_kd.offset = 0;
+ disk->d_kd.length = OFF_MAX;
+ len = sizeof(disk->d_kd);
+ error = g_io_getattr("GEOM::kerneldump", rcp, &len, &disk->d_kd);
+ if (disk->d_kd.di.dumper == NULL)
+ G_RAID_DEBUG1(2, sc, "Dumping not supported by %s: %d.",
+ rcp->provider->name, error);
+
+ g_raid_md_promise_new_disk(disk);
+
+ sx_xunlock(&sc->sc_lock);
+ g_topology_lock();
+ *gp = geom;
+ return (result);
+}
+
+static int
+g_raid_md_event_promise(struct g_raid_md_object *md,
+ struct g_raid_disk *disk, u_int event)
+{
+ struct g_raid_softc *sc;
+ struct g_raid_md_promise_perdisk *pd;
+
+ sc = md->mdo_softc;
+ if (disk == NULL)
+ return (-1);
+ pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
+ switch (event) {
+ case G_RAID_DISK_E_DISCONNECTED:
+ /* Delete disk. */
+ g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
+ g_raid_destroy_disk(disk);
+ g_raid_md_promise_purge_volumes(sc);
+
+ /* Write updated metadata to all disks. */
+ g_raid_md_write_promise(md, NULL, NULL, NULL);
+
+ /* Check if anything left. */
+ if (g_raid_ndisks(sc, -1) == 0)
+ g_raid_destroy_node(sc, 0);
+ else
+ g_raid_md_promise_refill(sc);
+ return (0);
+ }
+ return (-2);
+}
+
+static int
+g_raid_md_volume_event_promise(struct g_raid_md_object *md,
+ struct g_raid_volume *vol, u_int event)
+{
+ struct g_raid_softc *sc;
+ struct g_raid_md_promise_pervolume *pv;
+
+ sc = md->mdo_softc;
+ pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data;
+ switch (event) {
+ case G_RAID_VOLUME_E_STARTMD:
+ if (!pv->pv_started)
+ g_raid_md_promise_start(vol);
+ return (0);
+ }
+ return (-2);
+}
+
+static int
+g_raid_md_ctl_promise(struct g_raid_md_object *md,
+ struct gctl_req *req)
+{
+ struct g_raid_softc *sc;
+ struct g_raid_volume *vol, *vol1;
+ struct g_raid_subdisk *sd;
+ struct g_raid_disk *disk, *disks[PROMISE_MAX_DISKS];
+ struct g_raid_md_promise_perdisk *pd;
+ struct g_raid_md_promise_pervolume *pv;
+ struct g_consumer *cp;
+ struct g_provider *pp;
+ char arg[16];
+ const char *verb, *volname, *levelname, *diskname;
+ char *tmp;
+ int *nargs, *force;
+ off_t size, sectorsize, strip;
+ intmax_t *sizearg, *striparg;
+ uint32_t offs[PROMISE_MAX_DISKS], esize;
+ int numdisks, i, len, level, qual;
+ int error;
+
+ sc = md->mdo_softc;
+ verb = gctl_get_param(req, "verb", NULL);
+ nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
+ error = 0;
+ if (strcmp(verb, "label") == 0) {
+
+ if (*nargs < 4) {
+ gctl_error(req, "Invalid number of arguments.");
+ return (-1);
+ }
+ volname = gctl_get_asciiparam(req, "arg1");
+ if (volname == NULL) {
+ gctl_error(req, "No volume name.");
+ return (-2);
+ }
+ levelname = gctl_get_asciiparam(req, "arg2");
+ if (levelname == NULL) {
+ gctl_error(req, "No RAID level.");
+ return (-3);
+ }
+ if (g_raid_volume_str2level(levelname, &level, &qual)) {
+ gctl_error(req, "Unknown RAID level '%s'.", levelname);
+ return (-4);
+ }
+ numdisks = *nargs - 3;
+ force = gctl_get_paraml(req, "force", sizeof(*force));
+ if (!g_raid_md_promise_supported(level, qual, numdisks,
+ force ? *force : 0)) {
+ gctl_error(req, "Unsupported RAID level "
+ "(0x%02x/0x%02x), or number of disks (%d).",
+ level, qual, numdisks);
+ return (-5);
+ }
+
+ /* Search for disks, connect them and probe. */
+ size = INT64_MAX;
+ sectorsize = 0;
+ bzero(disks, sizeof(disks));
+ bzero(offs, sizeof(offs));
+ for (i = 0; i < numdisks; i++) {
+ snprintf(arg, sizeof(arg), "arg%d", i + 3);
+ diskname = gctl_get_asciiparam(req, arg);
+ if (diskname == NULL) {
+ gctl_error(req, "No disk name (%s).", arg);
+ error = -6;
+ break;
+ }
+ if (strcmp(diskname, "NONE") == 0)
+ continue;
+
+ TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
+ if (disk->d_consumer != NULL &&
+ disk->d_consumer->provider != NULL &&
+ strcmp(disk->d_consumer->provider->name,
+ diskname) == 0)
+ break;
+ }
+ if (disk != NULL) {
+ if (disk->d_state != G_RAID_DISK_S_ACTIVE) {
+ gctl_error(req, "Disk '%s' is in a "
+ "wrong state (%s).", diskname,
+ g_raid_disk_state2str(disk->d_state));
+ error = -7;
+ break;
+ }
+ pd = disk->d_md_data;
+ if (pd->pd_subdisks >= PROMISE_MAX_SUBDISKS) {
+ gctl_error(req, "Disk '%s' already "
+ "used by %d volumes.",
+ diskname, pd->pd_subdisks);
+ error = -7;
+ break;
+ }
+ pp = disk->d_consumer->provider;
+ disks[i] = disk;
+ promise_meta_unused_range(pd->pd_meta,
+ pd->pd_subdisks,
+ pp->mediasize / pp->sectorsize,
+ &offs[i], &esize);
+ size = MIN(size, (off_t)esize * pp->sectorsize);
+ sectorsize = MAX(sectorsize, pp->sectorsize);
+ continue;
+ }
+
+ g_topology_lock();
+ cp = g_raid_open_consumer(sc, diskname);
+ if (cp == NULL) {
+ gctl_error(req, "Can't open disk '%s'.",
+ diskname);
+ g_topology_unlock();
+ error = -8;
+ break;
+ }
+ pp = cp->provider;
+ pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO);
+ disk = g_raid_create_disk(sc);
+ disk->d_md_data = (void *)pd;
+ disk->d_consumer = cp;
+ disks[i] = disk;
+ cp->private = disk;
+ g_topology_unlock();
+
+ /* Read kernel dumping information. */
+ disk->d_kd.offset = 0;
+ disk->d_kd.length = OFF_MAX;
+ len = sizeof(disk->d_kd);
+ g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd);
+ if (disk->d_kd.di.dumper == NULL)
+ G_RAID_DEBUG1(2, sc,
+ "Dumping not supported by %s.",
+ cp->provider->name);
+
+ /* Reserve some space for metadata. */
+ size = MIN(size, pp->mediasize - 131072llu * pp->sectorsize);
+ sectorsize = MAX(sectorsize, pp->sectorsize);
+ }
+ if (error != 0) {
+ for (i = 0; i < numdisks; i++) {
+ if (disks[i] != NULL &&
+ disks[i]->d_state == G_RAID_DISK_S_NONE)
+ g_raid_destroy_disk(disks[i]);
+ }
+ return (error);
+ }
+
+ /* Handle size argument. */
+ len = sizeof(*sizearg);
+ sizearg = gctl_get_param(req, "size", &len);
+ if (sizearg != NULL && len == sizeof(*sizearg) &&
+ *sizearg > 0) {
+ if (*sizearg > size) {
+ gctl_error(req, "Size too big %lld > %lld.",
+ (long long)*sizearg, (long long)size);
+ return (-9);
+ }
+ size = *sizearg;
+ }
+
+ /* Handle strip argument. */
+ strip = 131072;
+ len = sizeof(*striparg);
+ striparg = gctl_get_param(req, "strip", &len);
+ if (striparg != NULL && len == sizeof(*striparg) &&
+ *striparg > 0) {
+ if (*striparg < sectorsize) {
+ gctl_error(req, "Strip size too small.");
+ return (-10);
+ }
+ if (*striparg % sectorsize != 0) {
+ gctl_error(req, "Incorrect strip size.");
+ return (-11);
+ }
+ strip = *striparg;
+ }
+
+ /* Round size down to strip or sector. */
+ if (level == G_RAID_VOLUME_RL_RAID1 ||
+ level == G_RAID_VOLUME_RL_SINGLE ||
+ level == G_RAID_VOLUME_RL_CONCAT)
+ size -= (size % sectorsize);
+ else if (level == G_RAID_VOLUME_RL_RAID1E &&
+ (numdisks & 1) != 0)
+ size -= (size % (2 * strip));
+ else
+ size -= (size % strip);
+ if (size <= 0) {
+ gctl_error(req, "Size too small.");
+ return (-13);
+ }
+ if (size > 0xffffffffllu * sectorsize) {
+ gctl_error(req, "Size too big.");
+ return (-14);
+ }
+
+ /* We have all we need, create things: volume, ... */
+ pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO);
+ arc4rand(&pv->pv_id, sizeof(pv->pv_id), 0);
+ pv->pv_generation = 0;
+ pv->pv_started = 1;
+ vol = g_raid_create_volume(sc, volname, -1);
+ vol->v_md_data = pv;
+ vol->v_raid_level = level;
+ vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE;
+ vol->v_strip_size = strip;
+ vol->v_disks_count = numdisks;
+ if (level == G_RAID_VOLUME_RL_RAID0 ||
+ level == G_RAID_VOLUME_RL_CONCAT ||
+ level == G_RAID_VOLUME_RL_SINGLE)
+ vol->v_mediasize = size * numdisks;
+ else if (level == G_RAID_VOLUME_RL_RAID1)
+ vol->v_mediasize = size;
+ else if (level == G_RAID_VOLUME_RL_RAID3 ||
+ level == G_RAID_VOLUME_RL_RAID5)
+ vol->v_mediasize = size * (numdisks - 1);
+ else { /* RAID1E */
+ vol->v_mediasize = ((size * numdisks) / strip / 2) *
+ strip;
+ }
+ vol->v_sectorsize = sectorsize;
+ g_raid_start_volume(vol);
+
+ /* , and subdisks. */
+ for (i = 0; i < numdisks; i++) {
+ disk = disks[i];
+ sd = &vol->v_subdisks[i];
+ sd->sd_disk = disk;
+ sd->sd_offset = (off_t)offs[i] * 512;
+ sd->sd_size = size;
+ if (disk == NULL)
+ continue;
+ TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
+ g_raid_change_disk_state(disk,
+ G_RAID_DISK_S_ACTIVE);
+ g_raid_change_subdisk_state(sd,
+ G_RAID_SUBDISK_S_ACTIVE);
+ g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
+ G_RAID_EVENT_SUBDISK);
+ }
+
+ /* Write metadata based on created entities. */
+ G_RAID_DEBUG1(0, sc, "Array started.");
+ g_raid_md_write_promise(md, vol, NULL, NULL);
+
+ /* Pickup any STALE/SPARE disks to refill array if needed. */
+ g_raid_md_promise_refill(sc);
+
+ g_raid_event_send(vol, G_RAID_VOLUME_E_START,
+ G_RAID_EVENT_VOLUME);
+ return (0);
+ }
+ if (strcmp(verb, "add") == 0) {
+
+ gctl_error(req, "`add` command is not applicable, "
+ "use `label` instead.");
+ return (-99);
+ }
+ if (strcmp(verb, "delete") == 0) {
+
+ /* Full node destruction. */
+ if (*nargs == 1) {
+ /* Check if some volume is still open. */
+ force = gctl_get_paraml(req, "force", sizeof(*force));
+ if (force != NULL && *force == 0 &&
+ g_raid_nopens(sc) != 0) {
+ gctl_error(req, "Some volume is still open.");
+ return (-4);
+ }
+
+ TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
+ if (disk->d_consumer)
+ promise_meta_erase(disk->d_consumer);
+ }
+ g_raid_destroy_node(sc, 0);
+ return (0);
+ }
+
+ /* Destroy specified volume. If it was last - all node. */
+ if (*nargs != 2) {
+ gctl_error(req, "Invalid number of arguments.");
+ return (-1);
+ }
+ volname = gctl_get_asciiparam(req, "arg1");
+ if (volname == NULL) {
+ gctl_error(req, "No volume name.");
+ return (-2);
+ }
+
+ /* Search for volume. */
+ TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
+ if (strcmp(vol->v_name, volname) == 0)
+ break;
+ }
+ if (vol == NULL) {
+ i = strtol(volname, &tmp, 10);
+ if (verb != volname && tmp[0] == 0) {
+ TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
+ if (vol->v_global_id == i)
+ break;
+ }
+ }
+ }
+ if (vol == NULL) {
+ gctl_error(req, "Volume '%s' not found.", volname);
+ return (-3);
+ }
+
+ /* Check if volume is still open. */
+ force = gctl_get_paraml(req, "force", sizeof(*force));
+ if (force != NULL && *force == 0 &&
+ vol->v_provider_open != 0) {
+ gctl_error(req, "Volume is still open.");
+ return (-4);
+ }
+
+ /* Destroy volume and potentially node. */
+ i = 0;
+ TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next)
+ i++;
+ if (i >= 2) {
+ g_raid_destroy_volume(vol);
+ g_raid_md_promise_purge_disks(sc);
+ g_raid_md_write_promise(md, NULL, NULL, NULL);
+ } else {
+ TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
+ if (disk->d_consumer)
+ promise_meta_erase(disk->d_consumer);
+ }
+ g_raid_destroy_node(sc, 0);
+ }
+ return (0);
+ }
+ if (strcmp(verb, "remove") == 0 ||
+ strcmp(verb, "fail") == 0) {
+ if (*nargs < 2) {
+ gctl_error(req, "Invalid number of arguments.");
+ return (-1);
+ }
+ for (i = 1; i < *nargs; i++) {
+ snprintf(arg, sizeof(arg), "arg%d", i);
+ diskname = gctl_get_asciiparam(req, arg);
+ if (diskname == NULL) {
+ gctl_error(req, "No disk name (%s).", arg);
+ error = -2;
+ break;
+ }
+ if (strncmp(diskname, "/dev/", 5) == 0)
+ diskname += 5;
+
+ TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
+ if (disk->d_consumer != NULL &&
+ disk->d_consumer->provider != NULL &&
+ strcmp(disk->d_consumer->provider->name,
+ diskname) == 0)
+ break;
+ }
+ if (disk == NULL) {
+ gctl_error(req, "Disk '%s' not found.",
+ diskname);
+ error = -3;
+ break;
+ }
+
+ if (strcmp(verb, "fail") == 0) {
+ g_raid_md_fail_disk_promise(md, NULL, disk);
+ continue;
+ }
+
+ pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
+
+ /* Erase metadata on deleting disk and destroy it. */
+ promise_meta_erase(disk->d_consumer);
+ g_raid_destroy_disk(disk);
+ }
+ g_raid_md_promise_purge_volumes(sc);
+
+ /* Write updated metadata to remaining disks. */
+ g_raid_md_write_promise(md, NULL, NULL, NULL);
+
+ /* Check if anything left. */
+ if (g_raid_ndisks(sc, -1) == 0)
+ g_raid_destroy_node(sc, 0);
+ else
+ g_raid_md_promise_refill(sc);
+ return (error);
+ }
+ if (strcmp(verb, "insert") == 0) {
+ if (*nargs < 2) {
+ gctl_error(req, "Invalid number of arguments.");
+ return (-1);
+ }
+ for (i = 1; i < *nargs; i++) {
+ /* Get disk name. */
+ snprintf(arg, sizeof(arg), "arg%d", i);
+ diskname = gctl_get_asciiparam(req, arg);
+ if (diskname == NULL) {
+ gctl_error(req, "No disk name (%s).", arg);
+ error = -3;
+ break;
+ }
+
+ /* Try to find provider with specified name. */
+ g_topology_lock();
+ cp = g_raid_open_consumer(sc, diskname);
+ if (cp == NULL) {
+ gctl_error(req, "Can't open disk '%s'.",
+ diskname);
+ g_topology_unlock();
+ error = -4;
+ break;
+ }
+ pp = cp->provider;
+ g_topology_unlock();
+
+ pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO);
+
+ disk = g_raid_create_disk(sc);
+ disk->d_consumer = cp;
+ disk->d_consumer->private = disk;
+ disk->d_md_data = (void *)pd;
+ cp->private = disk;
+
+ /* Read kernel dumping information. */
+ disk->d_kd.offset = 0;
+ disk->d_kd.length = OFF_MAX;
+ len = sizeof(disk->d_kd);
+ g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd);
+ if (disk->d_kd.di.dumper == NULL)
+ G_RAID_DEBUG1(2, sc,
+ "Dumping not supported by %s.",
+ cp->provider->name);
+
+ /* Welcome the "new" disk. */
+ g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
+ promise_meta_write_spare(cp);
+ g_raid_md_promise_refill(sc);
+ }
+ return (error);
+ }
+ return (-100);
+}
+
+static int
+g_raid_md_write_promise(struct g_raid_md_object *md, struct g_raid_volume *tvol,
+ struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
+{
+ struct g_raid_softc *sc;
+ struct g_raid_volume *vol;
+ struct g_raid_subdisk *sd;
+ struct g_raid_disk *disk;
+ struct g_raid_md_promise_perdisk *pd;
+ struct g_raid_md_promise_pervolume *pv;
+ struct promise_raid_conf *meta;
+ off_t rebuild_lba64;
+ int i, j, pos, rebuild;
+
+ sc = md->mdo_softc;
+
+ if (sc->sc_stopping == G_RAID_DESTROY_HARD)
+ return (0);
+
+ /* Generate new per-volume metadata for affected volumes. */
+ TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
+ if (vol->v_stopping)
+ continue;
+
+ /* Skip volumes not related to specified targets. */
+ if (tvol != NULL && vol != tvol)
+ continue;
+ if (tsd != NULL && vol != tsd->sd_volume)
+ continue;
+ if (tdisk != NULL) {
+ for (i = 0; i < vol->v_disks_count; i++) {
+ if (vol->v_subdisks[i].sd_disk == tdisk)
+ break;
+ }
+ if (i >= vol->v_disks_count)
+ continue;
+ }
+
+ pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data;
+ pv->pv_generation++;
+
+ meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO);
+ if (pv->pv_meta != NULL)
+ memcpy(meta, pv->pv_meta, sizeof(*meta));
+ memcpy(meta->promise_id, PROMISE_MAGIC, sizeof(PROMISE_MAGIC));
+ meta->dummy_0 = 0x00020000;
+ meta->integrity = PROMISE_I_VALID;
+
+ meta->generation = pv->pv_generation;
+ meta->status = PROMISE_S_VALID | PROMISE_S_ONLINE |
+ PROMISE_S_INITED | PROMISE_S_READY;
+ if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED)
+ meta->status |= PROMISE_S_DEGRADED;
+ if (vol->v_dirty)
+ meta->status |= PROMISE_S_MARKED; /* XXX: INVENTED! */
+ if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0 ||
+ vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE)
+ meta->type = PROMISE_T_RAID0;
+ else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 ||
+ vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
+ meta->type = PROMISE_T_RAID1;
+ else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3)
+ meta->type = PROMISE_T_RAID3;
+ else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5)
+ meta->type = PROMISE_T_RAID5;
+ else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT)
+ meta->type = PROMISE_T_SPAN;
+ else
+ meta->type = PROMISE_T_JBOD;
+ meta->total_disks = vol->v_disks_count;
+ meta->stripe_shift = ffs(vol->v_strip_size / 1024);
+ meta->array_width = vol->v_disks_count;
+ if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 ||
+ vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
+ meta->array_width /= 2;
+ meta->array_number = vol->v_global_id;
+ meta->total_sectors = vol->v_mediasize / vol->v_sectorsize;
+ meta->cylinders = meta->total_sectors / (255 * 63) - 1;
+ meta->heads = 254;
+ meta->sectors = 63;
+ meta->volume_id = pv->pv_id;
+ rebuild_lba64 = UINT64_MAX;
+ rebuild = 0;
+ for (i = 0; i < vol->v_disks_count; i++) {
+ sd = &vol->v_subdisks[i];
+ /* For RAID0+1 we need to translate order. */
+ pos = promise_meta_translate_disk(vol, i);
+ meta->disks[pos].flags = PROMISE_F_VALID |
+ PROMISE_F_ASSIGNED;
+ if (sd->sd_state == G_RAID_SUBDISK_S_NONE) {
+ meta->disks[pos].flags |= 0;
+ } else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED) {
+ meta->disks[pos].flags |=
+ PROMISE_F_DOWN | PROMISE_F_REDIR;
+ } else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD) {
+ meta->disks[pos].flags |=
+ PROMISE_F_ONLINE | PROMISE_F_REDIR;
+ if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) {
+ rebuild_lba64 = MIN(rebuild_lba64,
+ sd->sd_rebuild_pos / 512);
+ } else
+ rebuild_lba64 = 0;
+ rebuild = 1;
+ } else {
+ meta->disks[pos].flags |= PROMISE_F_ONLINE;
+ if (sd->sd_state < G_RAID_SUBDISK_S_ACTIVE) {
+ meta->status |= PROMISE_S_MARKED;
+ if (sd->sd_state == G_RAID_SUBDISK_S_RESYNC) {
+ rebuild_lba64 = MIN(rebuild_lba64,
+ sd->sd_rebuild_pos / 512);
+ } else
+ rebuild_lba64 = 0;
+ }
+ }
+ if (pv->pv_meta != NULL) {
+ meta->disks[pos].id = pv->pv_meta->disks[pos].id;
+ } else {
+ meta->disks[pos].number = i * 2;
+ arc4rand(&meta->disks[pos].id,
+ sizeof(meta->disks[pos].id), 0);
+ }
+ }
+ promise_meta_put_name(meta, vol->v_name);
+
+ /* Try to mimic AMD BIOS rebuild/resync behavior. */
+ if (rebuild_lba64 != UINT64_MAX) {
+ if (rebuild)
+ meta->magic_3 = 0x03040010UL; /* Rebuild? */
+ else
+ meta->magic_3 = 0x03040008UL; /* Resync? */
+ /* Translate from per-disk to per-volume LBA. */
+ if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 ||
+ vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) {
+ rebuild_lba64 *= meta->array_width;
+ } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3 ||
+ vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) {
+ rebuild_lba64 *= meta->array_width - 1;
+ } else
+ rebuild_lba64 = 0;
+ } else
+ meta->magic_3 = 0x03000000UL;
+ meta->rebuild_lba64 = rebuild_lba64;
+ meta->magic_4 = 0x04010101UL;
+
+ /* Replace per-volume metadata with new. */
+ if (pv->pv_meta != NULL)
+ free(pv->pv_meta, M_MD_PROMISE);
+ pv->pv_meta = meta;
+
+ /* Copy new metadata to the disks, adding or replacing old. */
+ for (i = 0; i < vol->v_disks_count; i++) {
+ sd = &vol->v_subdisks[i];
+ disk = sd->sd_disk;
+ if (disk == NULL)
+ continue;
+ /* For RAID0+1 we need to translate order. */
+ pos = promise_meta_translate_disk(vol, i);
+ pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
+ for (j = 0; j < pd->pd_subdisks; j++) {
+ if (pd->pd_meta[j]->volume_id == meta->volume_id)
+ break;
+ }
+ if (j == pd->pd_subdisks)
+ pd->pd_subdisks++;
+ if (pd->pd_meta[j] != NULL)
+ free(pd->pd_meta[j], M_MD_PROMISE);
+ pd->pd_meta[j] = promise_meta_copy(meta);
+ pd->pd_meta[j]->disk = meta->disks[pos];
+ pd->pd_meta[j]->disk.number = pos;
+ pd->pd_meta[j]->disk_offset = sd->sd_offset / 512;
+ pd->pd_meta[j]->disk_sectors = sd->sd_size / 512;
+ if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) {
+ pd->pd_meta[j]->rebuild_lba =
+ sd->sd_rebuild_pos / 512;
+ } else if (sd->sd_state < G_RAID_SUBDISK_S_REBUILD)
+ pd->pd_meta[j]->rebuild_lba = 0;
+ else
+ pd->pd_meta[j]->rebuild_lba = UINT32_MAX;
+ pd->pd_updated = 1;
+ }
+ }
+
+ TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
+ pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
+ if (disk->d_state != G_RAID_DISK_S_ACTIVE)
+ continue;
+ if (!pd->pd_updated)
+ continue;
+ G_RAID_DEBUG(1, "Writing Promise metadata to %s",
+ g_raid_get_diskname(disk));
+ for (i = 0; i < pd->pd_subdisks; i++)
+ g_raid_md_promise_print(pd->pd_meta[i]);
+ promise_meta_write(disk->d_consumer,
+ pd->pd_meta, pd->pd_subdisks);
+ pd->pd_updated = 0;
+ }
+
+ return (0);
+}
+
+static int
+g_raid_md_fail_disk_promise(struct g_raid_md_object *md,
+ struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
+{
+ struct g_raid_softc *sc;
+ struct g_raid_md_promise_perdisk *pd;
+ struct g_raid_subdisk *sd;
+ int i, pos;
+
+ sc = md->mdo_softc;
+ pd = (struct g_raid_md_promise_perdisk *)tdisk->d_md_data;
+
+ /* We can't fail disk that is not a part of array now. */
+ if (tdisk->d_state != G_RAID_DISK_S_ACTIVE)
+ return (-1);
+
+ /*
+ * Mark disk as failed in metadata and try to write that metadata
+ * to the disk itself to prevent it's later resurrection as STALE.
+ */
+ if (pd->pd_subdisks > 0 && tdisk->d_consumer != NULL)
+ G_RAID_DEBUG(1, "Writing Promise metadata to %s",
+ g_raid_get_diskname(tdisk));
+ for (i = 0; i < pd->pd_subdisks; i++) {
+ pd->pd_meta[i]->disk.flags |=
+ PROMISE_F_DOWN | PROMISE_F_REDIR;
+ pos = pd->pd_meta[i]->disk.number;
+ if (pos >= 0 && pos < PROMISE_MAX_DISKS) {
+ pd->pd_meta[i]->disks[pos].flags |=
+ PROMISE_F_DOWN | PROMISE_F_REDIR;
+ }
+ g_raid_md_promise_print(pd->pd_meta[i]);
+ }
+ if (tdisk->d_consumer != NULL)
+ promise_meta_write(tdisk->d_consumer,
+ pd->pd_meta, pd->pd_subdisks);
+
+ /* Change states. */
+ g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
+ TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
+ g_raid_change_subdisk_state(sd,
+ G_RAID_SUBDISK_S_FAILED);
+ g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
+ G_RAID_EVENT_SUBDISK);
+ }
+
+ /* Write updated metadata to remaining disks. */
+ g_raid_md_write_promise(md, NULL, NULL, tdisk);
+
+ g_raid_md_promise_refill(sc);
+ return (0);
+}
+
+static int
+g_raid_md_free_disk_promise(struct g_raid_md_object *md,
+ struct g_raid_disk *disk)
+{
+ struct g_raid_md_promise_perdisk *pd;
+ int i;
+
+ pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data;
+ for (i = 0; i < pd->pd_subdisks; i++) {
+ if (pd->pd_meta[i] != NULL) {
+ free(pd->pd_meta[i], M_MD_PROMISE);
+ pd->pd_meta[i] = NULL;
+ }
+ }
+ free(pd, M_MD_PROMISE);
+ disk->d_md_data = NULL;
+ return (0);
+}
+
+static int
+g_raid_md_free_volume_promise(struct g_raid_md_object *md,
+ struct g_raid_volume *vol)
+{
+ struct g_raid_md_promise_pervolume *pv;
+
+ pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data;
+ if (pv && pv->pv_meta != NULL) {
+ free(pv->pv_meta, M_MD_PROMISE);
+ pv->pv_meta = NULL;
+ }
+ if (pv && !pv->pv_started) {
+ pv->pv_started = 1;
+ callout_stop(&pv->pv_start_co);
+ }
+ return (0);
+}
+
+static int
+g_raid_md_free_promise(struct g_raid_md_object *md)
+{
+
+ return (0);
+}
+
+G_RAID_MD_DECLARE(g_raid_md_promise);
OpenPOWER on IntegriCloud