/*
* mdadm - Intel(R) Matrix Storage Manager Support
*
- * Copyright (C) 2002-2007 Intel Corporation
+ * Copyright (C) 2002-2008 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#define HAVE_STDINT_H 1
#include "mdadm.h"
#include "mdmon.h"
+#include "sha1.h"
#include <values.h>
#include <scsi/sg.h>
#include <ctype.h>
} __attribute__ ((packed));
struct imsm_vol {
- __u32 reserved[2];
+ __u32 curr_migr_unit;
+ __u32 reserved;
__u8 migr_state; /* Normal or Migrating */
__u8 migr_type; /* Initializing, Rebuilding, ... */
__u8 dirty;
int fd;
} *disks;
struct dl *add; /* list of disks to add while mdmon active */
+ struct dl *missing; /* disks removed while we weren't looking */
struct bbm_log *bbm_log;
};
enum imsm_update_type type;
};
-static int imsm_env_devname_as_serial(void)
-{
- char *val = getenv("IMSM_DEVNAME_AS_SERIAL");
-
- if (val && atoi(val) == 1)
- return 1;
-
- return 0;
-}
-
-
static struct supertype *match_metadata_desc_imsm(char *arg)
{
struct supertype *st;
return st;
}
+#ifndef MDASSEMBLE
static __u8 *get_imsm_version(struct imsm_super *mpb)
{
return &mpb->sig[MPB_SIG_LEN];
}
+#endif
/* retrieve a disk directly from the anchor when the anchor is known to be
* up-to-date, currently only at load time
return &mpb->disk[index];
}
+#ifndef MDASSEMBLE
/* retrieve a disk from the parsed metadata */
static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index)
{
return NULL;
}
+#endif
/* generate a checksum directly from the anchor when the anchor is known to be
* up-to-date, currently only at load or write_super after coalescing
struct extent *rv, *e;
int i, j;
int memberships = 0;
+ __u32 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
for (i = 0; i < super->anchor->num_raid_devs; i++) {
struct imsm_dev *dev = get_imsm_dev(super, i);
}
qsort(rv, memberships, sizeof(*rv), cmp_extent);
- e->start = __le32_to_cpu(dl->disk.total_blocks) -
- (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS);
+ /* determine the start of the metadata
+ * when no raid devices are defined use the default
+ * ...otherwise allow the metadata to truncate the value
+ * as is the case with older versions of imsm
+ */
+ if (memberships) {
+ struct extent *last = &rv[memberships - 1];
+ __u32 remainder;
+
+ remainder = __le32_to_cpu(dl->disk.total_blocks) -
+ (last->start + last->size);
+ if (reservation > remainder)
+ reservation = remainder;
+ }
+ e->start = __le32_to_cpu(dl->disk.total_blocks) - reservation;
e->size = 0;
return rv;
}
+/* try to determine how much space is reserved for metadata from
+ * the last get_extents() entry, otherwise fallback to the
+ * default
+ */
+static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl)
+{
+ struct extent *e;
+ int i;
+ __u32 rv;
+
+ /* for spares just return a minimal reservation which will grow
+ * once the spare is picked up by an array
+ */
+ if (dl->index == -1)
+ return MPB_SECTOR_CNT;
+
+ e = get_extents(super, dl);
+ if (!e)
+ return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
+
+ /* scroll to last entry */
+ for (i = 0; e[i].size; i++)
+ continue;
+
+ rv = __le32_to_cpu(dl->disk.total_blocks) - e[i].start;
+
+ free(e);
+
+ return rv;
+}
+
#ifndef MDASSEMBLE
+static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info);
+
static void print_imsm_dev(struct imsm_dev *dev, int index)
{
__u64 sz;
__u32 ord;
printf("\n");
- printf("[%s]:\n", dev->volume);
+ printf("[%.16s]:\n", dev->volume);
printf(" RAID Level : %d\n", get_imsm_raid_level(map));
printf(" Members : %d\n", map->num_members);
for (slot = 0; slot < map->num_members; slot++)
printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean");
}
-static void print_imsm_disk(struct imsm_super *mpb, int index)
+static void print_imsm_disk(struct imsm_super *mpb, int index, __u32 reserved)
{
struct imsm_disk *disk = __get_imsm_disk(mpb, index);
- char str[MAX_RAID_SERIAL_LEN];
+ char str[MAX_RAID_SERIAL_LEN + 1];
__u32 s;
__u64 sz;
return;
printf("\n");
- snprintf(str, MAX_RAID_SERIAL_LEN, "%s", disk->serial);
+ snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial);
printf(" Disk%02d Serial : %s\n", index, str);
s = __le32_to_cpu(disk->status);
printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "",
s&FAILED_DISK ? " failed" : "",
s&USABLE_DISK ? " usable" : "");
printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id));
- sz = __le32_to_cpu(disk->total_blocks) -
- (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS * mpb->num_raid_devs);
+ sz = __le32_to_cpu(disk->total_blocks) - reserved;
printf(" Usable Size : %llu%s\n", (unsigned long long)sz,
human_size(sz * 512));
}
struct imsm_super *mpb = super->anchor;
char str[MAX_SIGNATURE_LENGTH];
int i;
+ struct mdinfo info;
+ char nbuf[64];
__u32 sum;
+ __u32 reserved = imsm_reserved_sectors(super, super->disks);
+
snprintf(str, MPB_SIG_LEN, "%s", mpb->sig);
printf(" Magic : %s\n", str);
printf(" Version : %s\n", get_imsm_version(mpb));
printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num));
printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num));
+ getinfo_super_imsm(st, &info);
+ fname_from_uuid(st, &info, nbuf,'-');
+ printf(" UUID : %s\n", nbuf + 5);
sum = __le32_to_cpu(mpb->check_sum);
printf(" Checksum : %08x %s\n", sum,
__gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect");
printf(" MPB Sectors : %d\n", mpb_sectors(mpb));
printf(" Disks : %d\n", mpb->num_disks);
printf(" RAID Devices : %d\n", mpb->num_raid_devs);
- print_imsm_disk(mpb, super->disks->index);
+ print_imsm_disk(mpb, super->disks->index, reserved);
if (super->bbm_log) {
struct bbm_log *log = super->bbm_log;
for (i = 0; i < mpb->num_disks; i++) {
if (i == super->disks->index)
continue;
- print_imsm_disk(mpb, i);
+ print_imsm_disk(mpb, i, reserved);
}
}
+static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info);
+
static void brief_examine_super_imsm(struct supertype *st)
{
- printf("ARRAY /dev/imsm metadata=imsm\n");
+ /* We just write a generic IMSM ARRAY entry */
+ struct mdinfo info;
+ char nbuf[64];
+ struct intel_super *super = st->sb;
+ int i;
+
+ if (!super->anchor->num_raid_devs)
+ return;
+
+ getinfo_super_imsm(st, &info);
+ fname_from_uuid(st, &info, nbuf,'-');
+ printf("ARRAY /dev/imsm metadata=imsm auto=md UUID=%s\n", nbuf + 5);
+ for (i = 0; i < super->anchor->num_raid_devs; i++) {
+ struct imsm_dev *dev = get_imsm_dev(super, i);
+
+ super->current_vol = i;
+ getinfo_super_imsm(st, &info);
+ fname_from_uuid(st, &info, nbuf,'-');
+ printf("ARRAY /dev/md/%.16s container=/dev/imsm member=%d auto=mdp UUID=%s\n",
+ dev->volume, i, nbuf + 5);
+ }
}
static void detail_super_imsm(struct supertype *st, char *homehost)
static void brief_detail_super_imsm(struct supertype *st)
{
- printf("%s\n", __FUNCTION__);
+ struct mdinfo info;
+ char nbuf[64];
+ getinfo_super_imsm(st, &info);
+ fname_from_uuid(st, &info, nbuf,'-');
+ printf(" UUID=%s", nbuf + 5);
}
#endif
{
printf("%s\n", __FUNCTION__);
- return 0;
+ return -1;
}
static void uuid_from_super_imsm(struct supertype *st, int uuid[4])
{
- /* imsm does not track uuid's so just make sure we never return
- * the same value twice to break uuid matching in Manage_subdevs
- * FIXME what about the use of uuid's with bitmap's?
+ /* The uuid returned here is used for:
+ * uuid to put into bitmap file (Create, Grow)
+ * uuid for backup header when saving critical section (Grow)
+ * comparing uuids when re-adding a device into an array
+ * In these cases the uuid required is that of the data-array,
+ * not the device-set.
+ * uuid to recognise same set when adding a missing device back
+ * to an array. This is a uuid for the device-set.
+ *
+ * For each of these we can make do with a truncated
+ * or hashed uuid rather than the original, as long as
+ * everyone agrees.
+ * In each case the uuid required is that of the data-array,
+ * not the device-set.
*/
- static int dummy_id = 0;
+ /* imsm does not track uuid's so we synthesis one using sha1 on
+ * - The signature (Which is constant for all imsm array, but no matter)
+ * - the family_num of the container
+ * - the index number of the volume
+ * - the 'serial' number of the volume.
+ * Hopefully these are all constant.
+ */
+ struct intel_super *super = st->sb;
- uuid[0] = dummy_id++;
+ char buf[20];
+ struct sha1_ctx ctx;
+ struct imsm_dev *dev = NULL;
+
+ sha1_init_ctx(&ctx);
+ sha1_process_bytes(super->anchor->sig, MAX_SIGNATURE_LENGTH, &ctx);
+ sha1_process_bytes(&super->anchor->family_num, sizeof(__u32), &ctx);
+ if (super->current_vol >= 0)
+ dev = get_imsm_dev(super, super->current_vol);
+ if (dev) {
+ __u32 vol = super->current_vol;
+ sha1_process_bytes(&vol, sizeof(vol), &ctx);
+ sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx);
+ }
+ sha1_finish_ctx(&ctx, buf);
+ memcpy(uuid, buf, 4*4);
}
#if 0
case 6:
return ALGORITHM_LEFT_ASYMMETRIC;
case 10:
- return 0x102; //FIXME is this correct?
+ return 0x102;
}
return -1;
}
info->array.md_minor = -1;
info->array.ctime = 0;
info->array.utime = 0;
- info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip * 512);
+ info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9;
+ info->array.state = !dev->vol.dirty;
+
+ info->disk.major = 0;
+ info->disk.minor = 0;
info->data_offset = __le32_to_cpu(map->pba_of_lba0);
info->component_size = __le32_to_cpu(map->blocks_per_member);
+ memset(info->uuid, 0, sizeof(info->uuid));
- info->disk.major = 0;
- info->disk.minor = 0;
+ if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty)
+ info->resync_start = 0;
+ else if (dev->vol.migr_state)
+ info->resync_start = __le32_to_cpu(dev->vol.curr_migr_unit);
+ else
+ info->resync_start = ~0ULL;
+ strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN);
+ info->name[MAX_RAID_SERIAL_LEN] = 0;
+
+ info->array.major_version = -1;
+ info->array.minor_version = -2;
sprintf(info->text_version, "/%s/%d",
devnum2devname(st->container_dev),
info->container_member);
+ info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */
+ uuid_from_super_imsm(st, info->uuid);
}
info->disk.minor = 0;
info->disk.raid_disk = -1;
info->reshape_active = 0;
+ info->array.major_version = -1;
+ info->array.minor_version = -2;
strcpy(info->text_version, "imsm");
+ info->safe_mode_delay = 0;
info->disk.number = -1;
info->disk.state = 0;
+ info->name[0] = 0;
if (super->disks) {
+ __u32 reserved = imsm_reserved_sectors(super, super->disks);
+
disk = &super->disks->disk;
- info->disk.number = super->disks->index;
- info->disk.raid_disk = super->disks->index;
- info->data_offset = __le32_to_cpu(disk->total_blocks) -
- (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS);
- info->component_size = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
+ info->data_offset = __le32_to_cpu(disk->total_blocks) - reserved;
+ info->component_size = reserved;
s = __le32_to_cpu(disk->status);
info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0;
info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0;
- info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0;
+ info->disk.state |= s & SPARE_DISK ? 0 : (1 << MD_DISK_SYNC);
}
+
+ /* only call uuid_from_super_imsm when this disk is part of a populated container,
+ * ->compare_super may have updated the 'num_raid_devs' field for spares
+ */
+ if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs)
+ uuid_from_super_imsm(st, info->uuid);
+ else
+ memcpy(info->uuid, uuid_match_any, sizeof(int[4]));
}
static int update_super_imsm(struct supertype *st, struct mdinfo *info,
*/
if (first->anchor->num_raid_devs == 0 &&
sec->anchor->num_raid_devs > 0) {
+ int i;
+
+ /* we need to copy raid device info from sec if an allocation
+ * fails here we don't associate the spare
+ */
+ for (i = 0; i < sec->anchor->num_raid_devs; i++) {
+ first->dev_tbl[i] = malloc(sizeof(struct imsm_dev));
+ if (!first->dev_tbl) {
+ while (--i >= 0) {
+ free(first->dev_tbl[i]);
+ first->dev_tbl[i] = NULL;
+ }
+ fprintf(stderr, "imsm: failed to associate spare\n");
+ return 3;
+ }
+ *first->dev_tbl[i] = *sec->dev_tbl[i];
+ }
+
first->anchor->num_raid_devs = sec->anchor->num_raid_devs;
first->anchor->family_num = sec->anchor->family_num;
}
unsigned char scsi_serial[255];
int rv;
int rsp_len;
- int i, cnt;
+ int len;
+ char *c, *rsp_buf;
memset(scsi_serial, 0, sizeof(scsi_serial));
- if (imsm_env_devname_as_serial()) {
- char name[MAX_RAID_SERIAL_LEN];
-
- fd2devname(fd, name);
- strcpy((char *) serial, name);
+ rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial));
+
+ if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) {
+ memset(serial, 0, MAX_RAID_SERIAL_LEN);
+ fd2devname(fd, (char *) serial);
return 0;
}
- rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial));
-
if (rv != 0) {
if (devname)
fprintf(stderr,
return rv;
}
+ /* trim leading whitespace */
rsp_len = scsi_serial[3];
- for (i = 0, cnt = 0; i < rsp_len; i++) {
- if (!isspace(scsi_serial[4 + i]))
- serial[cnt++] = scsi_serial[4 + i];
- if (cnt == MAX_RAID_SERIAL_LEN)
- break;
- }
+ rsp_buf = (char *) &scsi_serial[4];
+ c = rsp_buf;
+ while (isspace(*c))
+ c++;
+
+ /* truncate len to the end of rsp_buf if necessary */
+ if (c + MAX_RAID_SERIAL_LEN > rsp_buf + rsp_len)
+ len = rsp_len - (c - rsp_buf);
+ else
+ len = MAX_RAID_SERIAL_LEN;
+
+ /* initialize the buffer and copy rsp_buf characters */
+ memset(serial, 0, MAX_RAID_SERIAL_LEN);
+ memcpy(serial, c, len);
- serial[MAX_RAID_SERIAL_LEN - 1] = '\0';
+ /* trim trailing whitespace starting with the last character copied */
+ c = (char *) &serial[len - 1];
+ while (isspace(*c) || *c == '\0')
+ *c-- = '\0';
return 0;
}
+static int serialcmp(__u8 *s1, __u8 *s2)
+{
+ return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN);
+}
+
+static void serialcpy(__u8 *dest, __u8 *src)
+{
+ strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN);
+}
+
static int
load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd)
{
* check if we need to update dl->index
*/
for (dl = super->disks; dl; dl = dl->next)
- if (memcmp(dl->serial, serial, MAX_RAID_SERIAL_LEN) == 0)
+ if (serialcmp(dl->serial, serial) == 0)
break;
if (!dl)
dl->next = super->disks;
dl->fd = keep_fd ? fd : -1;
dl->devname = devname ? strdup(devname) : NULL;
- strncpy((char *) dl->serial, (char *) serial, MAX_RAID_SERIAL_LEN);
+ serialcpy(dl->serial, serial);
dl->index = -2;
} else if (keep_fd) {
close(dl->fd);
disk_iter = __get_imsm_disk(super->anchor, i);
- if (memcmp(disk_iter->serial, dl->serial,
- MAX_RAID_SERIAL_LEN) == 0) {
+ if (serialcmp(disk_iter->serial, dl->serial) == 0) {
__u32 status;
dl->disk = *disk_iter;
}
}
+ /* no match, maybe a stale failed drive */
+ if (i == super->anchor->num_disks && dl->index >= 0) {
+ dl->disk = *__get_imsm_disk(super->anchor, dl->index);
+ if (__le32_to_cpu(dl->disk.status) & FAILED_DISK)
+ dl->index = -2;
+ }
+
if (alloc)
super->disks = dl;
memcpy(dest, src, sizeof_imsm_dev(src, 0));
}
-static void dup_map(struct imsm_dev *dev)
+#ifndef MDASSEMBLE
+/* When migrating map0 contains the 'destination' state while map1
+ * contains the current state. When not migrating map0 contains the
+ * current state. This routine assumes that map[0].map_state is set to
+ * the current array state before being called.
+ *
+ * Migration is indicated by one of the following states
+ * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
+ * 2/ Initialize (migr_state=1 migr_type=0 map0state=normal
+ * map1state=unitialized)
+ * 3/ Verify (Resync) (migr_state=1 migr_type=1 map0state=normal
+ * map1state=normal)
+ * 4/ Rebuild (migr_state=1 migr_type=1 map0state=normal
+ * map1state=degraded)
+ */
+static void migrate(struct imsm_dev *dev, __u8 to_state, int rebuild_resync)
{
- struct imsm_map *dest = get_imsm_map(dev, 1);
+ struct imsm_map *dest;
struct imsm_map *src = get_imsm_map(dev, 0);
+ dev->vol.migr_state = 1;
+ dev->vol.migr_type = rebuild_resync;
+ dev->vol.curr_migr_unit = 0;
+ dest = get_imsm_map(dev, 1);
+
memcpy(dest, src, sizeof_imsm_map(src));
+ src->map_state = to_state;
}
+static void end_migration(struct imsm_dev *dev, __u8 map_state)
+{
+ struct imsm_map *map = get_imsm_map(dev, 0);
+
+ dev->vol.migr_state = 0;
+ dev->vol.curr_migr_unit = 0;
+ map->map_state = map_state;
+}
+#endif
+
static int parse_raid_devices(struct intel_super *super)
{
int i;
}
static void free_imsm_disks(struct intel_super *super)
{
- while (super->disks) {
- struct dl *d = super->disks;
+ struct dl *d;
+ while (super->disks) {
+ d = super->disks;
super->disks = d->next;
__free_imsm_disk(d);
}
+ while (super->missing) {
+ d = super->missing;
+ super->missing = d->next;
+ __free_imsm_disk(d);
+ }
+
}
/* free all the pieces hanging off of a super pointer */
}
#ifndef MDASSEMBLE
+/* find_missing - helper routine for load_super_imsm_all that identifies
+ * disks that have disappeared from the system. This routine relies on
+ * the mpb being uptodate, which it is at load time.
+ */
+static int find_missing(struct intel_super *super)
+{
+ int i;
+ struct imsm_super *mpb = super->anchor;
+ struct dl *dl;
+ struct imsm_disk *disk;
+ __u32 status;
+
+ for (i = 0; i < mpb->num_disks; i++) {
+ disk = __get_imsm_disk(mpb, i);
+ for (dl = super->disks; dl; dl = dl->next)
+ if (serialcmp(dl->disk.serial, disk->serial) == 0)
+ break;
+ if (dl)
+ continue;
+ /* ok we have a 'disk' without a live entry in
+ * super->disks
+ */
+ status = __le32_to_cpu(disk->status);
+ if (status & FAILED_DISK || !(status & USABLE_DISK))
+ continue; /* never mind, already marked */
+
+ dl = malloc(sizeof(*dl));
+ if (!dl)
+ return 1;
+ dl->major = 0;
+ dl->minor = 0;
+ dl->fd = -1;
+ dl->devname = strdup("missing");
+ dl->index = i;
+ serialcpy(dl->serial, disk->serial);
+ dl->disk = *disk;
+ dl->next = super->missing;
+ super->missing = dl;
+ }
+
+ return 0;
+}
+
static int load_super_imsm_all(struct supertype *st, int fd, void **sbp,
char *devname, int keep_fd)
{
close(dfd);
}
+
+ if (find_missing(super) != 0) {
+ free_imsm(super);
+ return 2;
+ }
+
if (st->subarray[0]) {
if (atoi(st->subarray) <= super->anchor->num_raid_devs)
super->current_vol = atoi(st->subarray);
st->minor_version = 0;
st->max_devs = IMSM_MAX_DEVICES;
}
+ st->loaded_container = 1;
return 0;
}
st->minor_version = 0;
st->max_devs = IMSM_MAX_DEVICES;
}
+ st->loaded_container = 0;
return 0;
}
vol->migr_state = 0;
vol->migr_type = 0;
vol->dirty = 0;
+ vol->curr_migr_unit = 0;
for (i = 0; i < idx; i++) {
struct imsm_dev *prev = get_imsm_dev(super, i);
struct imsm_map *pmap = get_imsm_map(prev, 0);
return 1;
}
+#ifndef MDASSEMBLE
static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
int fd, char *devname)
{
get_dev_size(fd, NULL, &size);
size /= 512;
status = USABLE_DISK | SPARE_DISK;
- strcpy((char *) dd->disk.serial, (char *) dd->serial);
+ serialcpy(dd->disk.serial, dd->serial);
dd->disk.total_blocks = __cpu_to_le32(size);
dd->disk.status = __cpu_to_le32(status);
if (sysfs_disk_to_scsi_id(fd, &id) == 0)
generation++;
mpb->generation_num = __cpu_to_le32(generation);
+ mpb_size += sizeof(struct imsm_disk) * mpb->num_disks;
for (d = super->disks; d; d = d->next) {
if (d->index == -1)
spares++;
- else {
+ else
mpb->disk[d->index] = d->disk;
- mpb_size += sizeof(struct imsm_disk);
- }
}
+ for (d = super->missing; d; d = d->next)
+ mpb->disk[d->index] = d->disk;
for (i = 0; i < mpb->num_raid_devs; i++) {
struct imsm_dev *dev = __get_imsm_dev(mpb, i);
return 0;
}
+
static int create_array(struct supertype *st)
{
size_t len;
return 0;
}
-static int add_disk(struct supertype *st)
+static int _add_disk(struct supertype *st)
{
struct intel_super *super = st->sb;
size_t len;
/* in the add disk case we are running in mdmon
* context, so don't close fd's
*/
- return add_disk(st);
+ return _add_disk(st);
} else
rv = create_array(st);
} else
return write_super_imsm(st->sb, 1);
}
+#endif
static int store_zero_imsm(struct supertype *st, int fd)
{
return 0;
}
+static int imsm_bbm_log_size(struct imsm_super *mpb)
+{
+ return __le32_to_cpu(mpb->bbm_log_size);
+}
+
+#ifndef MDASSEMBLE
static int validate_geometry_imsm_container(struct supertype *st, int level,
int layout, int raiddisks, int chunk,
unsigned long long size, char *dev,
return 1;
}
-int imsm_bbm_log_size(struct imsm_super *mpb)
-{
- return __le32_to_cpu(mpb->bbm_log_size);
-}
-
static int validate_geometry_imsm(struct supertype *st, int level, int layout,
int raiddisks, int chunk, unsigned long long size,
char *dev, unsigned long long *freesize,
return 1;
}
+#endif /* MDASSEMBLE */
static struct mdinfo *container_content_imsm(struct supertype *st)
{
for (i = 0; i < mpb->num_raid_devs; i++) {
struct imsm_dev *dev = get_imsm_dev(super, i);
- struct imsm_vol *vol = &dev->vol;
struct imsm_map *map = get_imsm_map(dev, 0);
struct mdinfo *this;
int slot;
memset(this, 0, sizeof(*this));
this->next = rest;
- this->array.level = get_imsm_raid_level(map);
- this->array.raid_disks = map->num_members;
- this->array.layout = imsm_level_to_layout(this->array.level);
- this->array.md_minor = -1;
- this->array.ctime = 0;
- this->array.utime = 0;
- this->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9;
- this->array.state = !vol->dirty;
- this->container_member = i;
- if (map->map_state == IMSM_T_STATE_UNINITIALIZED ||
- dev->vol.dirty || dev->vol.migr_state)
- this->resync_start = 0;
- else
- this->resync_start = ~0ULL;
-
- strncpy(this->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN);
- this->name[MAX_RAID_SERIAL_LEN] = 0;
-
- sprintf(this->text_version, "/%s/%d",
- devnum2devname(st->container_dev),
- this->container_member);
-
- memset(this->uuid, 0, sizeof(this->uuid));
-
- this->component_size = __le32_to_cpu(map->blocks_per_member);
-
+ super->current_vol = i;
+ getinfo_super_imsm_volume(st, this);
for (slot = 0 ; slot < map->num_members; slot++) {
struct mdinfo *info_d;
struct dl *d;
}
+#ifndef MDASSEMBLE
static int imsm_open_new(struct supertype *c, struct active_array *a,
char *inst)
{
case 10:
{
/**
- * check to see if any mirrors have failed,
- * otherwise we are degraded
+ * check to see if any mirrors have failed, otherwise we
+ * are degraded. Even numbered slots are mirrored on
+ * slot+1
*/
- int device_per_mirror = 2; /* FIXME is this always the case?
- * and are they always adjacent?
- */
- int r10fail = 0;
int i;
+ /* gcc -Os complains that this is unused */
+ int insync = insync;
for (i = 0; i < map->num_members; i++) {
- int idx = get_imsm_disk_idx(dev, i);
- struct imsm_disk *disk = get_imsm_disk(super, idx);
+ __u32 ord = get_imsm_ord_tbl_ent(dev, i);
+ int idx = ord_to_idx(ord);
+ struct imsm_disk *disk;
- if (!disk)
- r10fail++;
- else if (__le32_to_cpu(disk->status) & FAILED_DISK)
- r10fail++;
+ /* reset the potential in-sync count on even-numbered
+ * slots. num_copies is always 2 for imsm raid10
+ */
+ if ((i & 1) == 0)
+ insync = 2;
- if (r10fail >= device_per_mirror)
- return IMSM_T_STATE_FAILED;
+ disk = get_imsm_disk(super, idx);
+ if (!disk ||
+ __le32_to_cpu(disk->status) & FAILED_DISK ||
+ ord & IMSM_ORD_REBUILD)
+ insync--;
- /* reset 'r10fail' for next mirror set */
- if (!((i + 1) % device_per_mirror))
- r10fail = 0;
+ /* no in-sync disks left in this mirror the
+ * array has failed
+ */
+ if (insync == 0)
+ return IMSM_T_STATE_FAILED;
}
return IMSM_T_STATE_DEGRADED;
return failed;
}
+static int is_resyncing(struct imsm_dev *dev)
+{
+ struct imsm_map *migr_map;
+
+ if (!dev->vol.migr_state)
+ return 0;
+
+ if (dev->vol.migr_type == 0)
+ return 1;
+
+ migr_map = get_imsm_map(dev, 1);
+
+ if (migr_map->map_state == IMSM_T_STATE_NORMAL)
+ return 1;
+ else
+ return 0;
+}
+
+static int is_rebuilding(struct imsm_dev *dev)
+{
+ struct imsm_map *migr_map;
+
+ if (!dev->vol.migr_state)
+ return 0;
+
+ if (dev->vol.migr_type == 0)
+ return 0;
+
+ migr_map = get_imsm_map(dev, 1);
+
+ if (migr_map->map_state == IMSM_T_STATE_DEGRADED)
+ return 1;
+ else
+ return 0;
+}
+
+static void mark_failure(struct imsm_disk *disk)
+{
+ __u32 status = __le32_to_cpu(disk->status);
+
+ if (status & FAILED_DISK)
+ return;
+ status |= FAILED_DISK;
+ disk->status = __cpu_to_le32(status);
+ disk->scsi_id = __cpu_to_le32(~(__u32)0);
+ memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1);
+}
+
+/* Handle dirty -> clean transititions and resync. Degraded and rebuild
+ * states are handled in imsm_set_disk() with one exception, when a
+ * resync is stopped due to a new failure this routine will set the
+ * 'degraded' state for the array.
+ */
static int imsm_set_array_state(struct active_array *a, int consistent)
{
int inst = a->info.container_member;
struct intel_super *super = a->container->sb;
struct imsm_dev *dev = get_imsm_dev(super, inst);
struct imsm_map *map = get_imsm_map(dev, 0);
- int dirty = !consistent;
- int failed;
- __u8 map_state;
+ int failed = imsm_count_failed(super, dev);
+ __u8 map_state = imsm_check_degraded(super, dev, failed);
- failed = imsm_count_failed(super, dev);
- map_state = imsm_check_degraded(super, dev, failed);
+ /* before we activate this array handle any missing disks */
+ if (consistent == 2 && super->missing) {
+ struct dl *dl;
- if (consistent && !dev->vol.dirty &&
- (dev->vol.migr_state || map_state != IMSM_T_STATE_NORMAL))
- a->resync_start = 0ULL;
- if (consistent == 2 && a->resync_start != ~0ULL)
+ dprintf("imsm: mark missing\n");
+ end_migration(dev, map_state);
+ for (dl = super->missing; dl; dl = dl->next)
+ mark_failure(&dl->disk);
+ super->updates_pending++;
+ }
+
+ if (consistent == 2 &&
+ (!is_resync_complete(a) ||
+ map_state != IMSM_T_STATE_NORMAL ||
+ dev->vol.migr_state))
consistent = 0;
- if (a->resync_start == ~0ULL) {
- /* complete recovery or initial resync */
- if (map->map_state != map_state) {
- dprintf("imsm: map_state %d: %d\n",
- inst, map_state);
- map->map_state = map_state;
- super->updates_pending++;
- }
- if (dev->vol.migr_state) {
- dprintf("imsm: mark resync complete\n");
- dev->vol.migr_state = 0;
- dev->vol.migr_type = 0;
+ if (is_resync_complete(a)) {
+ /* complete intialization / resync,
+ * recovery is completed in ->set_disk
+ */
+ if (is_resyncing(dev)) {
+ dprintf("imsm: mark resync done\n");
+ end_migration(dev, map_state);
super->updates_pending++;
}
- } else if (!dev->vol.migr_state) {
- dprintf("imsm: mark '%s' (%llu)\n",
- failed ? "rebuild" : "initializing", a->resync_start);
- /* mark that we are rebuilding */
- map->map_state = failed ? map_state : IMSM_T_STATE_NORMAL;
- dev->vol.migr_state = 1;
- dev->vol.migr_type = failed ? 1 : 0;
- dup_map(dev);
- a->check_degraded = 1;
+ } else if (!is_resyncing(dev) && !failed) {
+ /* mark the start of the init process if nothing is failed */
+ dprintf("imsm: mark resync start (%llu)\n", a->resync_start);
+ map->map_state = map_state;
+ migrate(dev, IMSM_T_STATE_NORMAL,
+ map->map_state == IMSM_T_STATE_NORMAL);
+ super->updates_pending++;
+ }
+
+ /* check if we can update the migration checkpoint */
+ if (dev->vol.migr_state &&
+ __le32_to_cpu(dev->vol.curr_migr_unit) != a->resync_start) {
+ dprintf("imsm: checkpoint migration (%llu)\n", a->resync_start);
+ dev->vol.curr_migr_unit = __cpu_to_le32(a->resync_start);
super->updates_pending++;
}
/* mark dirty / clean */
- if (dirty != dev->vol.dirty) {
+ if (dev->vol.dirty != !consistent) {
dprintf("imsm: mark '%s' (%llu)\n",
- dirty ? "dirty" : "clean", a->resync_start);
- dev->vol.dirty = dirty;
+ consistent ? "clean" : "dirty", a->resync_start);
+ if (consistent)
+ dev->vol.dirty = 0;
+ else
+ dev->vol.dirty = 1;
super->updates_pending++;
}
return consistent;
struct imsm_dev *dev = get_imsm_dev(super, inst);
struct imsm_map *map = get_imsm_map(dev, 0);
struct imsm_disk *disk;
+ int failed;
__u32 status;
- int failed = 0;
- int new_failure = 0;
__u32 ord;
+ __u8 map_state;
if (n > map->num_members)
fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n",
/* check for new failures */
status = __le32_to_cpu(disk->status);
if ((state & DS_FAULTY) && !(status & FAILED_DISK)) {
- status |= FAILED_DISK;
- disk->status = __cpu_to_le32(status);
- disk->scsi_id = __cpu_to_le32(~0UL);
- memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1);
- new_failure = 1;
+ mark_failure(disk);
super->updates_pending++;
}
+
/* check if in_sync */
if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD) {
struct imsm_map *migr_map = get_imsm_map(dev, 1);
super->updates_pending++;
}
- /* the number of failures have changed, count up 'failed' to determine
- * degraded / failed status
- */
- if (new_failure && map->map_state != IMSM_T_STATE_FAILED)
- failed = imsm_count_failed(super, dev);
-
- /* determine map_state based on failed or in_sync count */
- if (failed)
- map->map_state = imsm_check_degraded(super, dev, failed);
- else if (map->map_state == IMSM_T_STATE_DEGRADED) {
- struct mdinfo *d;
- int working = 0;
-
- for (d = a->info.devs ; d ; d = d->next)
- if (d->curr_state & DS_INSYNC)
- working++;
+ failed = imsm_count_failed(super, dev);
+ map_state = imsm_check_degraded(super, dev, failed);
- if (working == a->info.array.raid_disks) {
- map->map_state = IMSM_T_STATE_NORMAL;
- dev->vol.migr_state = 0;
- dev->vol.migr_type = 0;
- super->updates_pending++;
- }
+ /* check if recovery complete, newly degraded, or failed */
+ if (map_state == IMSM_T_STATE_NORMAL && is_rebuilding(dev)) {
+ end_migration(dev, map_state);
+ super->updates_pending++;
+ } else if (map_state == IMSM_T_STATE_DEGRADED &&
+ map->map_state != map_state &&
+ !dev->vol.migr_state) {
+ dprintf("imsm: mark degraded\n");
+ map->map_state = map_state;
+ super->updates_pending++;
+ } else if (map_state == IMSM_T_STATE_FAILED &&
+ map->map_state != map_state) {
+ dprintf("imsm: mark failed\n");
+ end_migration(dev, map_state);
+ super->updates_pending++;
}
}
return dl;
}
-static struct dl *imsm_add_spare(struct intel_super *super, int idx, struct active_array *a)
+static struct dl *imsm_add_spare(struct intel_super *super, int slot, struct active_array *a)
{
struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member);
+ int idx = get_imsm_disk_idx(dev, slot);
struct imsm_map *map = get_imsm_map(dev, 0);
unsigned long long esize;
unsigned long long pos;
for (dl = super->disks; dl; dl = dl->next) {
/* If in this array, skip */
for (d = a->info.devs ; d ; d = d->next)
- if (d->disk.major == dl->major &&
+ if (d->state_fd >= 0 &&
+ d->disk.major == dl->major &&
d->disk.minor == dl->minor) {
dprintf("%x:%x already in array\n", dl->major, dl->minor);
break;
if (d)
continue;
- /* skip marked in use or failed drives */
+ /* skip in use or failed drives */
status = __le32_to_cpu(dl->disk.status);
- if (status & FAILED_DISK || status & CONFIGURED_DISK) {
+ if (status & FAILED_DISK || idx == dl->index) {
dprintf("%x:%x status ( %s%s)\n",
dl->major, dl->minor,
status & FAILED_DISK ? "failed " : "",
- status & CONFIGURED_DISK ? "configured " : "");
+ idx == dl->index ? "in use " : "");
continue;
}
/* found a usable disk with enough space */
di = malloc(sizeof(*di));
+ if (!di)
+ continue;
memset(di, 0, sizeof(*di));
/* dl->index will be -1 in the case we are activating a
* disk_ord_tbl for the array
*/
mu = malloc(sizeof(*mu));
- mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares);
+ if (mu) {
+ mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares);
+ if (mu->buf == NULL) {
+ free(mu);
+ mu = NULL;
+ }
+ }
+ if (!mu) {
+ while (rv) {
+ struct mdinfo *n = rv->next;
+
+ free(rv);
+ rv = n;
+ }
+ return NULL;
+ }
+
mu->space = NULL;
mu->len = sizeof(struct imsm_update_activate_spare) * num_spares;
mu->next = *updates;
struct imsm_update_activate_spare *u = (void *) update->buf;
struct imsm_dev *dev = get_imsm_dev(super, u->array);
struct imsm_map *map = get_imsm_map(dev, 0);
+ struct imsm_map *migr_map;
struct active_array *a;
struct imsm_disk *disk;
__u32 status;
+ __u8 to_state;
struct dl *dl;
unsigned int found;
- int victim;
+ int failed;
+ int victim = get_imsm_disk_idx(dev, u->slot);
int i;
for (dl = super->disks; dl; dl = dl->next)
if (!dl) {
fprintf(stderr, "error: imsm_activate_spare passed "
- "an unknown disk (index: %d serial: %s)\n",
- u->dl->index, u->dl->serial);
+ "an unknown disk (index: %d)\n",
+ u->dl->index);
return;
}
super->updates_pending++;
+ /* count failures (excluding rebuilds and the victim)
+ * to determine map[0] state
+ */
+ failed = 0;
+ for (i = 0; i < map->num_members; i++) {
+ if (i == u->slot)
+ continue;
+ disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i));
+ if (!disk ||
+ __le32_to_cpu(disk->status) & FAILED_DISK)
+ failed++;
+ }
+
/* adding a pristine spare, assign a new index */
if (dl->index < 0) {
dl->index = super->anchor->num_disks;
super->anchor->num_disks++;
}
- victim = get_imsm_disk_idx(dev, u->slot);
- set_imsm_ord_tbl_ent(map, u->slot, dl->index);
disk = &dl->disk;
status = __le32_to_cpu(disk->status);
status |= CONFIGURED_DISK;
status &= ~SPARE_DISK;
disk->status = __cpu_to_le32(status);
+ /* mark rebuild */
+ to_state = imsm_check_degraded(super, dev, failed);
+ map->map_state = IMSM_T_STATE_DEGRADED;
+ migrate(dev, to_state, 1);
+ migr_map = get_imsm_map(dev, 1);
+ set_imsm_ord_tbl_ent(map, u->slot, dl->index);
+ set_imsm_ord_tbl_ent(migr_map, u->slot, dl->index | IMSM_ORD_REBUILD);
+
/* count arrays using the victim in the metadata */
found = 0;
for (a = st->arrays; a ; a = a->next) {
if (!found) {
struct dl **dlp;
+ /* We know that 'manager' isn't touching anything,
+ * so it is safe to delete
+ */
for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next)
if ((*dlp)->index == victim)
break;
- /* We know that 'manager' isn't touching anything,
- * so it is safe to:
- */
+
+ /* victim may be on the missing list */
+ if (!*dlp)
+ for (dlp = &super->missing; *dlp; dlp = &(*dlp)->next)
+ if ((*dlp)->index == victim)
+ break;
imsm_delete(super, dlp, victim);
}
break;
* being added */
if (super->add) {
struct active_array *a;
+
+ super->updates_pending++;
for (a = st->arrays; a; a = a->next)
a->check_degraded = 1;
}
- /* check if we can add / replace some disks in the
- * metadata */
+ /* add some spares to the metadata */
while (super->add) {
- struct dl **dlp, *dl, *al;
+ struct dl *al;
+
al = super->add;
super->add = al->next;
- for (dlp = &super->disks; *dlp ; ) {
- if (memcmp(al->serial, (*dlp)->serial,
- MAX_RAID_SERIAL_LEN) == 0) {
- dl = *dlp;
- *dlp = (*dlp)->next;
- __free_imsm_disk(dl);
- break;
- } else
- dlp = &(*dlp)->next;
- }
al->next = super->disks;
super->disks = al;
+ dprintf("%s: added %x:%x\n",
+ __func__, al->major, al->minor);
}
break;
for (iter = super->disks; iter; iter = iter->next)
if (iter->index > index)
iter->index--;
+ for (iter = super->missing; iter; iter = iter->next)
+ if (iter->index > index)
+ iter->index--;
for (i = 0; i < mpb->num_raid_devs; i++) {
dev = get_imsm_dev(super, i);
__free_imsm_disk(dl);
}
}
+#endif /* MDASSEMBLE */
struct superswitch super_imsm = {
#ifndef MDASSEMBLE
.detail_super = detail_super_imsm,
.brief_detail_super = brief_detail_super_imsm,
.write_init_super = write_init_super_imsm,
+ .validate_geometry = validate_geometry_imsm,
+ .add_to_super = add_to_super_imsm,
#endif
.match_home = match_home_imsm,
.uuid_from_super= uuid_from_super_imsm,
.load_super = load_super_imsm,
.init_super = init_super_imsm,
- .add_to_super = add_to_super_imsm,
.store_super = store_zero_imsm,
.free_super = free_super_imsm,
.match_metadata_desc = match_metadata_desc_imsm,
.container_content = container_content_imsm,
- .validate_geometry = validate_geometry_imsm,
.external = 1,
+#ifndef MDASSEMBLE
/* for mdmon */
.open_new = imsm_open_new,
.load_super = load_super_imsm,
.activate_spare = imsm_activate_spare,
.process_update = imsm_process_update,
.prepare_update = imsm_prepare_update,
+#endif /* MDASSEMBLE */
};
projects / thirdparty / mdadm.git / blobdiff