};
int updates_pending; /* count of pending updates for mdmon */
int creating_imsm; /* flag to indicate container creation */
- int creating_dev; /* index of raid device undergoing creation */
+ int current_vol; /* index of raid device undergoing creation */
struct dl {
struct dl *next;
int index;
unsigned long long start, size;
};
+/* definition of messages passed to imsm_process_update */
+enum imsm_update_type {
+ update_activate_spare,
+};
+
+struct imsm_update_activate_spare {
+ enum imsm_update_type type;
+ int disk_idx;
+ int slot;
+ int array;
+ struct imsm_update_activate_spare *next;
+};
+
static struct supertype *match_metadata_desc_imsm(char *arg)
{
struct supertype *st;
return st;
}
-static struct supertype *match_metadata_desc_imsm_volume(char *arg)
-{
- struct supertype *st;
-
- if (strcmp(arg, "imsm/volume") != 0 &&
- strcmp(arg, "raid") != 0 &&
- strcmp(arg, "default") != 0
- )
- return NULL;
-
- st = malloc(sizeof(*st));
- memset(st, 0, sizeof(*st));
- st->ss = &super_imsm_volume;
- st->max_devs = IMSM_MAX_DEVICES;
- st->minor_version = 0;
- st->sb = NULL;
- return st;
-}
-
static __u8 *get_imsm_version(struct imsm_super *mpb)
{
return &mpb->sig[MPB_SIG_LEN];
printf("%s\n", __FUNCTION__);
}
+#if 0
static void
get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p)
{
*m = strtol(minor, NULL, 0);
*p = strtol(patch, NULL, 0);
}
+#endif
static int imsm_level_to_layout(int level)
{
return -1;
}
+static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info)
+{
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+ struct imsm_dev *dev = get_imsm_dev(mpb, super->current_vol);
+ struct imsm_map *map = &dev->vol.map[0];
+
+ info->container_member = super->current_vol;
+ info->array.raid_disks = map->num_members;
+ info->array.level = get_imsm_raid_level(map);
+ info->array.layout = imsm_level_to_layout(info->array.level);
+ 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->data_offset = __le32_to_cpu(map->pba_of_lba0);
+ info->component_size = __le32_to_cpu(map->blocks_per_member);
+
+ info->disk.major = 0;
+ info->disk.minor = 0;
+
+ sprintf(info->text_version, "/%s/%d",
+ devnum2devname(st->container_dev),
+ info->container_member);
+}
+
+
static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info)
{
struct intel_super *super = st->sb;
struct imsm_disk *disk;
__u32 s;
- info->array.major_version = 2000;
- get_imsm_numerical_version(mpb, &info->array.minor_version,
- &info->array.patch_version);
+ if (super->current_vol >= 0) {
+ getinfo_super_imsm_volume(st, info);
+ return;
+ }
info->array.raid_disks = mpb->num_disks;
info->array.level = LEVEL_CONTAINER;
info->array.layout = 0;
info->disk.state = 0;
if (super->disks) {
+ disk = get_imsm_disk(mpb, super->disks->index);
info->disk.number = super->disks->index;
info->disk.raid_disk = super->disks->index;
- disk = get_imsm_disk(mpb, 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;
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;
}
}
-static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info)
-{
- struct intel_super *super = st->sb;
- struct imsm_super *mpb = super->mpb;
- struct imsm_dev *dev = get_imsm_dev(mpb, info->container_member);
- struct imsm_map *map = &dev->vol.map[0];
-
- info->array.major_version = 2000;
- get_imsm_numerical_version(mpb, &info->array.minor_version,
- &info->array.patch_version);
- info->array.raid_disks = map->num_members;
- info->array.level = get_imsm_raid_level(map);
- info->array.layout = imsm_level_to_layout(info->array.level);
- 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->data_offset = __le32_to_cpu(map->pba_of_lba0);
- info->component_size = __le32_to_cpu(map->blocks_per_member);
-
- info->disk.major = 0;
- info->disk.minor = 0;
-
- sprintf(info->text_version, "/%s/%d",
- devnum2devname(st->container_dev),
- info->container_member);
-}
-
static int update_super_imsm(struct supertype *st, struct mdinfo *info,
char *update, char *devname, int verbose,
int uuid_set, char *homehost)
size_t len, mpb_size;
unsigned long long sectors;
struct stat;
- struct imsm_super anchor;
+ struct imsm_super *anchor;
__u32 check_sum;
- memset(super, 0, sizeof(*super));
get_dev_size(fd, NULL, &dsize);
if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) {
return 1;
}
- len = sizeof(anchor);
- if (read(fd, &anchor, len) != len) {
+ len = 512;
+ if (posix_memalign((void**)&anchor, 512, len) != 0) {
+ if (devname)
+ fprintf(stderr,
+ Name ": Failed to allocate imsm anchor buffer"
+ " on %s\n", devname);
+ return 1;
+ }
+ if (read(fd, anchor, len) != len) {
if (devname)
fprintf(stderr,
Name ": Cannot read anchor block on %s: %s\n",
devname, strerror(errno));
+ free(anchor);
return 1;
}
- if (strncmp((char *) anchor.sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) {
+ if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) {
if (devname)
fprintf(stderr,
Name ": no IMSM anchor on %s\n", devname);
+ free(anchor);
return 2;
}
- mpb_size = __le32_to_cpu(anchor.mpb_size);
- super->mpb = malloc(mpb_size < 512 ? 512 : mpb_size);
- if (!super->mpb) {
+ mpb_size = __le32_to_cpu(anchor->mpb_size);
+ mpb_size = ROUND_UP(mpb_size, 512);
+ if (posix_memalign((void**)&super->mpb, 512, mpb_size) != 0) {
if (devname)
fprintf(stderr,
Name ": unable to allocate %zu byte mpb buffer\n",
mpb_size);
+ free(anchor);
return 2;
}
- memcpy(super->buf, &anchor, sizeof(anchor));
-
- /* read the rest of the first block */
- len = 512 - sizeof(anchor);
- if (read(fd, super->buf + sizeof(anchor), len) != len) {
- if (devname)
- fprintf(stderr,
- Name ": Cannot read anchor remainder on %s: %s\n",
- devname, strerror(errno));
- return 2;
- }
+ memcpy(super->buf, anchor, len);
- sectors = mpb_sectors(&anchor) - 1;
+ sectors = mpb_sectors(anchor) - 1;
+ free(anchor);
if (!sectors)
return load_imsm_disk(fd, super, devname, 0);
return load_imsm_disk(fd, super, devname, 0);
}
-struct superswitch super_imsm_container;
-
static void free_imsm_disks(struct intel_super *super)
{
while (super->disks) {
if (super) {
memset(super, 0, sizeof(*super));
super->creating_imsm = creating_imsm;
- super->creating_dev = -1;
+ super->current_vol = -1;
}
return super;
close(dfd);
}
+ if (st->subarray[0]) {
+ if (atoi(st->subarray) <= super->mpb->num_raid_devs)
+ super->current_vol = atoi(st->subarray);
+ else
+ return 1;
+ }
+
*sbp = super;
if (st->ss == NULL) {
- st->ss = &super_imsm_container;
+ st->ss = &super_imsm;
st->minor_version = 0;
st->max_devs = IMSM_MAX_DEVICES;
st->container_dev = fd2devnum(fd);
if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0)
return 0;
#endif
+ if (st->subarray[0])
+ return 1; /* FIXME */
super = alloc_super(0);
if (!super) {
return 0;
}
-static int init_zero_imsm(struct supertype *st, mdu_array_info_t *info,
- unsigned long long size, char *name,
- char *homehost, int *uuid)
+static __u16 info_to_blocks_per_strip(mdu_array_info_t *info)
{
- st->sb = NULL;
- return 0;
+ if (info->level == 1)
+ return 128;
+ return info->chunk_size >> 9;
}
-static int init_super_imsm(struct supertype *st, mdu_array_info_t *info,
- unsigned long long size, char *name,
- char *homehost, int *uuid)
+static __u32 info_to_num_data_stripes(mdu_array_info_t *info)
{
- /* This is primarily called by Create when creating a new array.
- * We will then get add_to_super called for each component, and then
- * write_init_super called to write it out to each device.
- * For IMSM, Create can create on fresh devices or on a pre-existing
- * array.
- * To create on a pre-existing array a different method will be called.
- * This one is just for fresh drives.
- */
- struct intel_super *super;
- struct imsm_super *mpb;
- size_t mpb_size;
+ __u32 num_stripes;
- super = alloc_super(1);
- if (!super)
- return 0;
- mpb_size = disks_to_mpb_size(info->nr_disks);
- mpb = malloc(mpb_size);
- if (!mpb) {
- free(super);
- return 0;
- }
- memset(mpb, 0, mpb_size);
+ num_stripes = (info->size * 2) / info_to_blocks_per_strip(info);
+ if (info->level == 1)
+ num_stripes /= 2;
- memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE));
- memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5,
- strlen(MPB_VERSION_RAID5));
- mpb->mpb_size = mpb_size;
-
- super->mpb = mpb;
- st->sb = super;
- return 1;
+ return num_stripes;
}
static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
int idx = mpb->num_raid_devs;
int i;
unsigned long long array_blocks;
- unsigned long long sz;
__u32 offset = 0;
+ size_t size_old, size_new;
if (mpb->num_raid_devs >= 2) {
fprintf(stderr, Name": This imsm-container already has the "
return 0;
}
- super->creating_dev = idx;
+ /* ensure the mpb is large enough for the new data */
+ size_old = __le32_to_cpu(mpb->mpb_size);
+ size_new = disks_to_mpb_size(info->nr_disks);
+ if (size_new > size_old) {
+ void *mpb_new;
+ size_t size_round = ROUND_UP(size_new, 512);
+
+ if (posix_memalign(&mpb_new, 512, size_round) != 0) {
+ fprintf(stderr, Name": could not allocate new mpb\n");
+ return 0;
+ }
+ memcpy(mpb_new, mpb, size_old);
+ free(mpb);
+ mpb = mpb_new;
+ super->mpb = mpb_new;
+ mpb->mpb_size = __cpu_to_le32(size_new);
+ memset(mpb_new + size_old, 0, size_round - size_old);
+ }
+ super->current_vol = idx;
+ sprintf(st->subarray, "%d", idx);
mpb->num_raid_devs++;
dev = get_imsm_dev(mpb, idx);
strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN);
}
map = &vol->map[0];
map->pba_of_lba0 = __cpu_to_le32(offset);
- sz = info->size * 2;
- map->blocks_per_member = __cpu_to_le32(sz);
- map->blocks_per_strip = __cpu_to_le16(info->chunk_size >> 9);
- map->num_data_stripes = __cpu_to_le32(sz / (info->chunk_size >> 9));
+ map->blocks_per_member = __cpu_to_le32(info->size * 2);
+ map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info));
+ map->num_data_stripes = __cpu_to_le32(info_to_num_data_stripes(info));
map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED :
IMSM_T_STATE_NORMAL;
+
+ if (info->level == 1 && info->raid_disks > 2) {
+ fprintf(stderr, Name": imsm does not support more than 2 disks"
+ "in a raid1 volume\n");
+ return 0;
+ }
if (info->level == 10)
map->raid_level = 1;
else
map->raid_level = info->level;
+
map->num_members = info->raid_disks;
for (i = 0; i < map->num_members; i++) {
/* initialized in add_to_super */
return 1;
}
+static int init_super_imsm(struct supertype *st, mdu_array_info_t *info,
+ unsigned long long size, char *name,
+ char *homehost, int *uuid)
+{
+ /* This is primarily called by Create when creating a new array.
+ * We will then get add_to_super called for each component, and then
+ * write_init_super called to write it out to each device.
+ * For IMSM, Create can create on fresh devices or on a pre-existing
+ * array.
+ * To create on a pre-existing array a different method will be called.
+ * This one is just for fresh drives.
+ */
+ struct intel_super *super;
+ struct imsm_super *mpb;
+ size_t mpb_size;
+
+ if (!info) {
+ st->sb = NULL;
+ return 0;
+ }
+ if (st->sb)
+ return init_super_imsm_volume(st, info, size, name, homehost,
+ uuid);
+
+ super = alloc_super(1);
+ if (!super)
+ return 0;
+ mpb_size = disks_to_mpb_size(info->nr_disks);
+ if (posix_memalign((void**)&mpb, 512, mpb_size) != 0) {
+ free(super);
+ return 0;
+ }
+ memset(mpb, 0, mpb_size);
+
+ memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE));
+ memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5,
+ strlen(MPB_VERSION_RAID5));
+ mpb->mpb_size = mpb_size;
+
+ super->mpb = mpb;
+ st->sb = super;
+ return 1;
+}
+
+static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
+ int fd, char *devname)
+{
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+ struct dl *dl;
+ struct imsm_dev *dev;
+ struct imsm_map *map;
+ struct imsm_disk *disk;
+ __u32 status;
+
+ dev = get_imsm_dev(mpb, super->current_vol);
+ map = &dev->vol.map[0];
+
+ for (dl = super->disks; dl ; dl = dl->next)
+ if (dl->major == dk->major &&
+ dl->minor == dk->minor)
+ break;
+ if (!dl || ! (dk->state & (1<<MD_DISK_SYNC)))
+ return;
+
+ map->disk_ord_tbl[dk->number] = __cpu_to_le32(dl->index);
+
+ disk = get_imsm_disk(mpb, dl->index);
+ status = CONFIGURED_DISK | USABLE_DISK;
+ disk->status = __cpu_to_le32(status);
+}
+
static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
int fd, char *devname)
{
int rv;
struct stat stb;
+ if (super->current_vol >= 0) {
+ add_to_super_imsm_volume(st, dk, fd, devname);
+ return;
+ }
+
fstat(fd, &stb);
dd = malloc(sizeof(*dd));
if (!dd) {
super->disks = dd;
}
-static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
- int fd, char *devname)
-{
- struct intel_super *super = st->sb;
- struct imsm_super *mpb = super->mpb;
- struct dl *dl;
- struct imsm_dev *dev;
- struct imsm_map *map;
- struct imsm_disk *disk;
- __u32 status;
-
- if (super->creating_dev == -1) {
- fprintf(stderr, Name ": no active raid device\n");
- abort();
- }
-
- dev = get_imsm_dev(mpb, super->creating_dev);
- map = &dev->vol.map[0];
-
- for (dl = super->disks; dl ; dl = dl->next)
- if (dl->major == dk->major &&
- dl->minor == dk->minor)
- break;
- if (!dl || ! (dk->state & (1<<MD_DISK_SYNC)))
- return;
-
- map->disk_ord_tbl[dk->number] = __cpu_to_le32(dl->index);
-
- disk = get_imsm_disk(mpb, dl->index);
- status = CONFIGURED_DISK | USABLE_DISK;
- disk->status = __cpu_to_le32(status);
-}
-
static int store_imsm_mpb(int fd, struct intel_super *super);
static int write_super_imsm(struct intel_super *super, int doclose)
static int store_zero_imsm(struct supertype *st, int fd)
{
unsigned long long dsize;
- char buf[512];
+ void *buf;
get_dev_size(fd, NULL, &dsize);
if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0)
return 1;
+ if (posix_memalign(&buf, 512, 512) != 0)
+ return 1;
+
memset(buf, 0, sizeof(buf));
if (write(fd, buf, sizeof(buf)) != sizeof(buf))
return 1;
-
return 0;
}
-static void getinfo_super_n_imsm_container(struct supertype *st, struct mdinfo *info)
-{
- /* just need offset and size...
- * of the metadata
- */
- struct intel_super *super = st->sb;
- struct imsm_super *mpb = super->mpb;
- struct imsm_disk *disk = get_imsm_disk(mpb, info->disk.number);
-
- info->data_offset = __le32_to_cpu(disk->total_blocks) -
- (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS);
- info->component_size = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
-}
-
-static void getinfo_super_n_imsm_volume(struct supertype *st, struct mdinfo *info)
-{
- /* Find the particular details for info->disk.raid_disk.
- * This includes data_offset, component_size,
- */
- struct intel_super *super = st->sb;
- struct imsm_super *mpb = super->mpb;
- struct imsm_dev *dev = get_imsm_dev(mpb, super->creating_dev);
- struct imsm_map *map = &dev->vol.map[0];
-
- info->data_offset = __le32_to_cpu(map->pba_of_lba0);
- info->component_size = __le32_to_cpu(map->blocks_per_member);
-}
-
-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)
-{
- int fd, cfd;
- struct mdinfo *sra;
-
- /* if given unused devices create a container
- * if given given devices in a container create a member volume
- */
- if (level == LEVEL_CONTAINER) {
- st->ss = &super_imsm_container;
- if (dev) {
- /* validate the container, dev == NULL */
- int rv = st->ss->validate_geometry(st, level, layout,
- raiddisks, chunk,
- size,
- NULL, freesize);
- if (rv)
- return rv;
- }
- return st->ss->validate_geometry(st, level, layout, raiddisks,
- chunk, size, dev, freesize);
- }
-
- if (st->sb) {
- /* creating in a given container */
- st->ss = &super_imsm_volume;
- if (dev) {
- int rv = st->ss->validate_geometry(st, level, layout,
- raiddisks, chunk,
- size,
- NULL, freesize);
- if (rv)
- return rv;
- }
- return st->ss->validate_geometry(st, level, layout, raiddisks,
- chunk, size, dev, freesize);
- }
-
- /* limit creation to the following levels */
- if (!dev)
- switch (level) {
- case 0:
- case 1:
- case 10:
- case 5:
- break;
- default:
- return 1;
- }
-
- /* This device needs to be a device in an 'imsm' container */
- fd = open(dev, O_RDONLY|O_EXCL, 0);
- if (fd >= 0) {
- fprintf(stderr,
- Name ": Cannot create this array on device %s\n",
- dev);
- close(fd);
- return 0;
- }
- if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
- fprintf(stderr, Name ": Cannot open %s: %s\n",
- dev, strerror(errno));
- return 0;
- }
- /* Well, it is in use by someone, maybe an 'imsm' container. */
- cfd = open_container(fd);
- if (cfd < 0) {
- close(fd);
- fprintf(stderr, Name ": Cannot use %s: It is busy\n",
- dev);
- return 0;
- }
- sra = sysfs_read(cfd, 0, GET_VERSION);
- close(fd);
- if (sra && sra->array.major_version == -1 &&
- strcmp(sra->text_version, "imsm") == 0) {
- /* This is a member of a imsm container. Load the container
- * and try to create a volume
- */
- struct intel_super *super;
- st->ss = &super_imsm_volume;
- if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) {
- st->sb = super;
- st->container_dev = fd2devnum(cfd);
- close(cfd);
- return st->ss->validate_geometry(st, level, layout,
- raiddisks, chunk, size,
- dev, freesize);
- }
- close(cfd);
- } else /* may belong to another container */
- return 0;
-
- return 1;
-}
-
static int validate_geometry_imsm_container(struct supertype *st, int level,
int layout, int raiddisks, int chunk,
unsigned long long size, char *dev,
- unsigned long long *freesize)
+ unsigned long long *freesize,
+ int verbose)
{
int fd;
unsigned long long ldsize;
fd = open(dev, O_RDONLY|O_EXCL, 0);
if (fd < 0) {
- fprintf(stderr, Name ": Cannot open %s: %s\n",
- dev, strerror(errno));
+ if (verbose)
+ fprintf(stderr, Name ": imsm: Cannot open %s: %s\n",
+ dev, strerror(errno));
return 0;
}
if (!get_dev_size(fd, dev, &ldsize)) {
static int validate_geometry_imsm_volume(struct supertype *st, int level,
int layout, int raiddisks, int chunk,
unsigned long long size, char *dev,
- unsigned long long *freesize)
+ unsigned long long *freesize,
+ int verbose)
{
struct stat stb;
struct intel_super *super = st->sb;
return 0;
if (level == 1 && raiddisks > 2) {
- fprintf(stderr, Name ": imsm does not support more than 2 "
- "in a raid1 configuration\n");
+ if (verbose)
+ fprintf(stderr, Name ": imsm does not support more "
+ "than 2 in a raid1 configuration\n");
return 0;
}
if (!dev) {
/* General test: make sure there is space for
- * 'raiddisks' device extents of size 'size'.
+ * 'raiddisks' device extents of size 'size' at a given
+ * offset
*/
unsigned long long minsize = size*2 /* convert to blocks */;
+ unsigned long long start_offset = ~0ULL;
int dcnt = 0;
if (minsize == 0)
minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
for (dl = super->disks; dl ; dl = dl->next) {
int found = 0;
+ pos = 0;
i = 0;
e = get_extents(super, dl);
if (!e) continue;
esize = e[i].start - pos;
if (esize >= minsize)
found = 1;
+ if (found && start_offset == ~0ULL) {
+ start_offset = pos;
+ break;
+ } else if (found && pos != start_offset) {
+ found = 0;
+ break;
+ }
pos = e[i].start + e[i].size;
i++;
} while (e[i-1].size);
free(e);
}
if (dcnt < raiddisks) {
- fprintf(stderr, Name ": Not enough devices with space "
- "for this array (%d < %d)\n",
- dcnt, raiddisks);
+ if (verbose)
+ fprintf(stderr, Name ": imsm: Not enough "
+ "devices with space for this array "
+ "(%d < %d)\n",
+ dcnt, raiddisks);
return 0;
}
return 1;
break;
}
if (!dl) {
- fprintf(stderr, Name ": %s is not in the same imsm set\n",
- dev);
+ if (verbose)
+ fprintf(stderr, Name ": %s is not in the "
+ "same imsm set\n", dev);
return 0;
}
e = get_extents(super, dl);
return 1;
}
+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,
+ int verbose)
+{
+ int fd, cfd;
+ struct mdinfo *sra;
+
+ /* if given unused devices create a container
+ * if given given devices in a container create a member volume
+ */
+ if (level == LEVEL_CONTAINER) {
+ /* Must be a fresh device to add to a container */
+ return validate_geometry_imsm_container(st, level, layout,
+ raiddisks, chunk, size,
+ dev, freesize,
+ verbose);
+ }
+
+ if (st->sb) {
+ /* creating in a given container */
+ return validate_geometry_imsm_volume(st, level, layout,
+ raiddisks, chunk, size,
+ dev, freesize, verbose);
+ }
+
+ /* limit creation to the following levels */
+ if (!dev)
+ switch (level) {
+ case 0:
+ case 1:
+ case 10:
+ case 5:
+ break;
+ default:
+ return 1;
+ }
+
+ /* This device needs to be a device in an 'imsm' container */
+ fd = open(dev, O_RDONLY|O_EXCL, 0);
+ if (fd >= 0) {
+ if (verbose)
+ fprintf(stderr,
+ Name ": Cannot create this array on device %s\n",
+ dev);
+ close(fd);
+ return 0;
+ }
+ if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
+ if (verbose)
+ fprintf(stderr, Name ": Cannot open %s: %s\n",
+ dev, strerror(errno));
+ return 0;
+ }
+ /* Well, it is in use by someone, maybe an 'imsm' container. */
+ cfd = open_container(fd);
+ if (cfd < 0) {
+ close(fd);
+ if (verbose)
+ fprintf(stderr, Name ": Cannot use %s: It is busy\n",
+ dev);
+ return 0;
+ }
+ sra = sysfs_read(cfd, 0, GET_VERSION);
+ close(fd);
+ if (sra && sra->array.major_version == -1 &&
+ strcmp(sra->text_version, "imsm") == 0) {
+ /* This is a member of a imsm container. Load the container
+ * and try to create a volume
+ */
+ struct intel_super *super;
+
+ if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) {
+ st->sb = super;
+ st->container_dev = fd2devnum(cfd);
+ close(cfd);
+ return validate_geometry_imsm_volume(st, level, layout,
+ raiddisks, chunk,
+ size, dev,
+ freesize, verbose);
+ }
+ close(cfd);
+ } else /* may belong to another container */
+ return 0;
+
+ return 1;
+}
+
static struct mdinfo *container_content_imsm(struct supertype *st)
{
/* Given a container loaded by load_super_imsm_all,
this->next = rest;
rest = this;
- this->array.major_version = 2000;
- get_imsm_numerical_version(mpb, &this->array.minor_version,
- &this->array.patch_version);
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);
static int imsm_open_new(struct supertype *c, struct active_array *a,
char *inst)
{
+ struct intel_super *super = c->sb;
+ struct imsm_super *mpb = super->mpb;
+
+ if (atoi(inst) + 1 > mpb->num_raid_devs) {
+ fprintf(stderr, "%s: subarry index %d, out of range\n",
+ __func__, atoi(inst));
+ return -ENODEV;
+ }
+
dprintf("imsm: open_new %s\n", inst);
a->info.container_member = atoi(inst);
return 0;
if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0)
return 1;
- if (write(fd, super->buf + 512, mpb_size - 512) != mpb_size - 512)
+ if (write(fd, super->buf + 512, 512 * sectors) != 512 * sectors)
return 1;
}
if (write(fd, super->buf, 512) != 512)
return 1;
- fsync(fd);
-
return 0;
}
super->updates_pending = 0;
}
+static struct mdinfo *imsm_activate_spare(struct active_array *a,
+ struct metadata_update **updates)
+{
+ /**
+ * Take a device that is marked spare in the metadata and use it to
+ * replace a failed/vacant slot in an array. There may be a case where
+ * a device is failed in one array but active in a second.
+ * imsm_process_update catches this case and does not clear the SPARE_DISK
+ * flag, allowing the second array to start using the device on failure.
+ * SPARE_DISK is cleared when all arrays are using a device.
+ *
+ * FIXME: is this a valid use of SPARE_DISK?
+ */
+
+ struct intel_super *super = a->container->sb;
+ struct imsm_super *mpb = super->mpb;
+ int inst = a->info.container_member;
+ struct imsm_dev *dev = get_imsm_dev(mpb, inst);
+ struct imsm_map *map = dev->vol.map;
+ int failed = a->info.array.raid_disks;
+ struct mdinfo *rv = NULL;
+ struct mdinfo *d;
+ struct mdinfo *di;
+ struct metadata_update *mu;
+ struct dl *dl;
+ struct imsm_update_activate_spare *u;
+ int num_spares = 0;
+ int i;
+
+ for (d = a->info.devs ; d ; d = d->next) {
+ if ((d->curr_state & DS_FAULTY) &&
+ d->state_fd >= 0)
+ /* wait for Removal to happen */
+ return NULL;
+ if (d->state_fd >= 0)
+ failed--;
+ }
+
+ dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
+ inst, failed, a->info.array.raid_disks, a->info.array.level);
+ if (imsm_check_degraded(mpb, inst, failed) != IMSM_T_STATE_DEGRADED)
+ return NULL;
+
+ /* For each slot, if it is not working, find a spare */
+ dl = super->disks;
+ for (i = 0; i < a->info.array.raid_disks; i++) {
+ for (d = a->info.devs ; d ; d = d->next)
+ if (d->disk.raid_disk == i)
+ break;
+ dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0);
+ if (d && (d->state_fd >= 0))
+ continue;
+
+ /* OK, this device needs recovery. Find a spare */
+ for ( ; dl ; dl = dl->next) {
+ unsigned long long esize;
+ unsigned long long pos;
+ struct mdinfo *d2;
+ struct extent *ex;
+ struct imsm_disk *disk;
+ int j;
+ int found;
+
+ /* If in this array, skip */
+ for (d2 = a->info.devs ; d2 ; d2 = d2->next)
+ if (d2->disk.major == dl->major &&
+ d2->disk.minor == dl->minor) {
+ dprintf("%x:%x already in array\n", dl->major, dl->minor);
+ break;
+ }
+ if (d2)
+ continue;
+
+ /* is this unused device marked as a spare? */
+ disk = get_imsm_disk(mpb, dl->index);
+ if (!(__le32_to_cpu(disk->status) & SPARE_DISK))
+ continue;
+
+ /* We are allowed to use this device - is there space?
+ * We need a->info.component_size sectors */
+ ex = get_extents(super, dl);
+ if (!ex) {
+ dprintf("cannot get extents\n");
+ continue;
+ }
+ found = 0;
+ j = 0;
+ pos = 0;
+ esize = 0;
+
+ do {
+ esize = ex[j].start - pos;
+ if (esize >= a->info.component_size &&
+ pos == __le32_to_cpu(map->pba_of_lba0)) {
+ found = 1;
+ break;
+ }
+ pos = ex[i].start + ex[i].size;
+ i++;
+ } while (ex[i-1].size);
+
+ free(ex);
+ if (!found) {
+ dprintf("%x:%x does not have %llu at %d\n",
+ dl->major, dl->minor,
+ a->info.component_size,
+ __le32_to_cpu(map->pba_of_lba0));
+ /* No room */
+ continue;
+ }
+
+ /* Cool, we have a device with some space at pos */
+ di = malloc(sizeof(*di));
+ memset(di, 0, sizeof(*di));
+ di->disk.number = dl->index;
+ di->disk.raid_disk = i;
+ di->disk.major = dl->major;
+ di->disk.minor = dl->minor;
+ di->disk.state = 0;
+ di->data_offset = pos;
+ di->component_size = a->info.component_size;
+ di->container_member = inst;
+ di->next = rv;
+ rv = di;
+ num_spares++;
+ dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor,
+ i, pos);
+
+ break;
+ }
+ }
+
+ if (!rv)
+ /* No spares found */
+ return rv;
+ /* Now 'rv' has a list of devices to return.
+ * Create a metadata_update record to update the
+ * disk_ord_tbl for the array
+ */
+ mu = malloc(sizeof(*mu));
+ mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares);
+ mu->space = NULL;
+ mu->len = sizeof(struct imsm_update_activate_spare) * num_spares;
+ mu->next = *updates;
+ u = (struct imsm_update_activate_spare *) mu->buf;
+
+ for (di = rv ; di ; di = di->next) {
+ u->type = update_activate_spare;
+ u->disk_idx = di->disk.number;
+ u->slot = di->disk.raid_disk;
+ u->array = inst;
+ u->next = u + 1;
+ u++;
+ }
+ (u-1)->next = NULL;
+ *updates = mu;
+
+ return rv;
+}
+
+static int weight(unsigned int field)
+{
+ int weight;
+
+ for (weight = 0; field; weight++)
+ field &= field - 1;
+
+ return weight;
+}
+
+static void imsm_process_update(struct supertype *st,
+ struct metadata_update *update)
+{
+ /**
+ * crack open the metadata_update envelope to find the update record
+ * update can be one of:
+ * update_activate_spare - a spare device has replaced a failed
+ * device in an array, update the disk_ord_tbl. If this disk is
+ * present in all member arrays then also clear the SPARE_DISK
+ * flag
+ */
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+ enum imsm_update_type type = *(enum imsm_update_type *) update->buf;
+
+ switch (type) {
+ case update_activate_spare: {
+ struct imsm_update_activate_spare *u = (void *) update->buf;
+ struct imsm_dev *dev = get_imsm_dev(mpb, u->array);
+ struct imsm_map *map = &dev->vol.map[0];
+ struct active_array *a;
+ struct imsm_disk *disk;
+ __u32 status;
+ struct dl *dl;
+ struct mdinfo *d;
+ unsigned int members;
+ unsigned int found;
+ int victim;
+ int i;
+
+ for (dl = super->disks; dl; dl = dl->next)
+ if (dl->index == u->disk_idx)
+ break;
+
+ if (!dl) {
+ fprintf(stderr, "error: imsm_activate_spare passed "
+ "an unknown disk_idx: %d\n", u->disk_idx);
+ return;
+ }
+
+ super->updates_pending++;
+
+ victim = get_imsm_disk_idx(map, u->slot);
+ map->disk_ord_tbl[u->slot] = __cpu_to_le32(u->disk_idx);
+ disk = get_imsm_disk(mpb, u->disk_idx);
+ status = __le32_to_cpu(disk->status);
+ status |= CONFIGURED_DISK;
+ disk->status = __cpu_to_le32(status);
+
+ /* map unique/live arrays using the spare */
+ members = 0;
+ found = 0;
+ for (a = st->arrays; a; a = a->next) {
+ int inst = a->info.container_member;
+
+ dev = get_imsm_dev(mpb, inst);
+ map = &dev->vol.map[0];
+ if (map->raid_level > 0)
+ members |= 1 << inst;
+ for (d = a->info.devs; d; d = d->next)
+ if (d->disk.major == dl->major &&
+ d->disk.minor == dl->minor)
+ found |= 1 << inst;
+ }
+
+ /* until all arrays that can absorb this disk have absorbed
+ * this disk it can still be considered a spare
+ */
+ if (weight(found) >= weight(members)) {
+ status = __le32_to_cpu(disk->status);
+ status &= ~SPARE_DISK;
+ disk->status = __cpu_to_le32(status);
+ }
+
+ /* count arrays using the victim in the metadata */
+ found = 0;
+ for (a = st->arrays; a ; a = a->next) {
+ dev = get_imsm_dev(mpb, a->info.container_member);
+ map = &dev->vol.map[0];
+ for (i = 0; i < map->num_members; i++)
+ if (victim == get_imsm_disk_idx(map, i))
+ found++;
+ }
+
+ /* clear some flags if the victim is no longer being
+ * utilized anywhere
+ */
+ disk = get_imsm_disk(mpb, victim);
+ if (!found) {
+ status = __le32_to_cpu(disk->status);
+ status &= ~(CONFIGURED_DISK | USABLE_DISK);
+ disk->status = __cpu_to_le32(status);
+ }
+ }
+ }
+}
+
struct superswitch super_imsm = {
#ifndef MDASSEMBLE
.examine_super = examine_super_imsm,
.brief_examine_super = brief_examine_super_imsm,
.detail_super = detail_super_imsm,
.brief_detail_super = brief_detail_super_imsm,
+ .write_init_super = write_init_super_imsm,
#endif
.match_home = match_home_imsm,
.uuid_from_super= uuid_from_super_imsm,
.compare_super = compare_super_imsm,
.load_super = load_super_imsm,
- .init_super = init_zero_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,
- .getinfo_super_n = getinfo_super_n_imsm_container,
+ .container_content = container_content_imsm,
.validate_geometry = validate_geometry_imsm,
- .swapuuid = 0,
.external = 1,
/* for mdmon */
.set_array_state= imsm_set_array_state,
.set_disk = imsm_set_disk,
.sync_metadata = imsm_sync_metadata,
-};
-
-/* super_imsm_container is set by validate_geometry_imsm when given a
- * device that is not part of any array
- */
-struct superswitch super_imsm_container = {
-
- .validate_geometry = validate_geometry_imsm_container,
- .init_super = init_super_imsm,
- .add_to_super = add_to_super_imsm,
- .write_init_super = write_init_super_imsm,
- .getinfo_super = getinfo_super_imsm,
- .getinfo_super_n = getinfo_super_n_imsm_container,
- .load_super = load_super_imsm,
-
-#ifndef MDASSEMBLE
- .examine_super = examine_super_imsm,
- .brief_examine_super = brief_examine_super_imsm,
- .detail_super = detail_super_imsm,
- .brief_detail_super = brief_detail_super_imsm,
-#endif
-
- .free_super = free_super_imsm,
-
- .container_content = container_content_imsm,
-
- .swapuuid = 0,
- .external = 1,
-};
-
-struct superswitch super_imsm_volume = {
- .update_super = update_super_imsm,
- .init_super = init_super_imsm_volume,
- .add_to_super = add_to_super_imsm_volume,
- .getinfo_super = getinfo_super_imsm_volume,
- .getinfo_super_n = getinfo_super_n_imsm_volume,
- .write_init_super = write_init_super_imsm,
-
- .load_super = load_super_imsm,
- .free_super = free_super_imsm,
- .match_metadata_desc = match_metadata_desc_imsm_volume,
-
-
- .validate_geometry = validate_geometry_imsm_volume,
- .swapuuid = 0,
- .external = 2,
+ .activate_spare = imsm_activate_spare,
+ .process_update = imsm_process_update,
};
projects / thirdparty / mdadm.git / blobdiff