diff options
Diffstat (limited to 'sys/geom/raid/md_promise.c')
| -rw-r--r-- | sys/geom/raid/md_promise.c | 1940 |
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 000000000000..b7bf070f9543 --- /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); |