* .. other stuff
*/
-
static unsigned long calc_sb0_csum(mdp_super_t *super)
{
unsigned long csum = super->sb_csum;
return newcsum;
}
-
static void super0_swap_endian(struct mdp_superblock_s *sb)
{
/* as super0 superblocks are host-endian, it is sometimes
+ sb->events_lo);
}
+static int copy_metadata0(struct supertype *st, int from, int to)
+{
+ /* Read 64K from the appropriate offset of 'from'
+ * and if it looks a little like a 0.90 superblock,
+ * write it to the same offset of 'to'
+ */
+ void *buf;
+ unsigned long long dsize, offset;
+ const int bufsize = 64*1024;
+ mdp_super_t *super;
+
+ if (posix_memalign(&buf, 4096, bufsize) != 0)
+ return 1;
+
+ if (!get_dev_size(from, NULL, &dsize))
+ goto err;
+
+ if (dsize < MD_RESERVED_SECTORS*512)
+ goto err;
+
+ offset = MD_NEW_SIZE_SECTORS(dsize>>9);
+
+ offset *= 512;
+
+ if (lseek64(from, offset, 0) < 0LL)
+ goto err;
+ if (read(from, buf, bufsize) != bufsize)
+ goto err;
+
+ if (lseek64(to, offset, 0) < 0LL)
+ goto err;
+ super = buf;
+ if (super->md_magic != MD_SB_MAGIC ||
+ super->major_version != 0 ||
+ calc_sb0_csum(super) != super->sb_csum)
+ goto err;
+ if (write(to, buf, bufsize) != bufsize)
+ goto err;
+ free(buf);
+ return 0;
+err:
+ free(buf);
+ return 1;
+}
+
static void detail_super0(struct supertype *st, char *homehost)
{
mdp_super_t *sb = st->sb;
int rv = 0;
int uuid[4];
mdp_super_t *sb = st->sb;
+
+ if (strcmp(update, "homehost") == 0 &&
+ homehost) {
+ /* note that 'homehost' is special as it is really
+ * a "uuid" update.
+ */
+ uuid_set = 0;
+ update = "uuid";
+ info->uuid[0] = sb->set_uuid0;
+ info->uuid[1] = sb->set_uuid1;
+ }
+
if (strcmp(update, "sparc2.2")==0 ) {
/* 2.2 sparc put the events in the wrong place
* So we copy the tail of the superblock
/* make sure resync happens */
sb->state &= ~(1<<MD_SB_CLEAN);
sb->recovery_cp = 0;
- } else if (strcmp(update, "homehost") == 0 &&
- homehost) {
- uuid_set = 0;
- update = "uuid";
- info->uuid[0] = sb->set_uuid0;
- info->uuid[1] = sb->set_uuid1;
} else if (strcmp(update, "uuid") == 0) {
if (!uuid_set && homehost) {
char buf[20];
uuid_from_super0(st, uuid);
memcpy(bm->uuid, uuid, 16);
}
+ } else if (strcmp(update, "metadata") == 0) {
+ /* Create some v1.0 metadata to match ours but make the
+ * ctime bigger. Also update info->array.*_version.
+ * We need to arrange that store_super writes out
+ * the v1.0 metadata.
+ * Not permitted for unclean array, or array with
+ * bitmap.
+ */
+ if (info->bitmap_offset) {
+ pr_err("Cannot update metadata when bitmap is present\n");
+ rv = -2;
+ } else if (info->array.state != 1) {
+ pr_err("Cannot update metadata on unclean array\n");
+ rv = -2;
+ } else {
+ info->array.major_version = 1;
+ info->array.minor_version = 0;
+ uuid_from_super0(st, info->uuid);
+ st->other = super1_make_v0(st, info, st->sb);
+ }
+ } else if (strcmp(update, "revert-reshape") == 0) {
+ rv = -2;
+ if (sb->minor_version <= 90)
+ pr_err("No active reshape to revert on %s\n",
+ devname);
+ else if (sb->delta_disks == 0)
+ pr_err("%s: Can only revert reshape which changes number of devices\n",
+ devname);
+ else {
+ int tmp;
+ int parity = sb->level == 6 ? 2 : 1;
+ rv = 0;
+
+ if (sb->level >= 4 && sb->level <= 6 &&
+ sb->reshape_position % (
+ sb->new_chunk/512 *
+ (sb->raid_disks - sb->delta_disks - parity))) {
+ pr_err("Reshape position is not suitably aligned.\n");
+ pr_err("Try normal assembly and stop again\n");
+ return -2;
+ }
+ sb->raid_disks -= sb->delta_disks;
+ sb->delta_disks = -sb->delta_disks;
+
+ tmp = sb->new_layout;
+ sb->new_layout = sb->layout;
+ sb->layout = tmp;
+
+ tmp = sb->new_chunk;
+ sb->new_chunk = sb->chunk_size;
+ sb->chunk_size = tmp;
+ }
} else if (strcmp(update, "no-bitmap") == 0) {
sb->state &= ~(1<<MD_SB_BITMAP_PRESENT);
} else if (strcmp(update, "_reshape_progress")==0)
* host name
*/
-
static int init_super0(struct supertype *st, mdu_array_info_t *info,
unsigned long long size, char *ignored_name, char *homehost,
int *uuid, unsigned long long data_offset)
int spares;
if (data_offset != INVALID_SECTORS) {
- fprintf(stderr, Name ": data-offset not support for 0.90\n");
+ pr_err("data-offset not support for 0.90\n");
return 0;
}
if (posix_memalign((void**)&sb, 4096,
MD_SB_BYTES + ROUND_UP(sizeof(bitmap_super_t), 4096)) != 0) {
- pr_err("%s could not allocate superblock\n", __func__);
+ pr_err("could not allocate superblock\n");
return 0;
}
memset(sb, 0, MD_SB_BYTES + sizeof(bitmap_super_t));
dk->major = dinfo->major;
dk->minor = dinfo->minor;
dk->raid_disk = dinfo->raid_disk;
- dk->state = dinfo->state;
- /* In case our source disk was writemostly, don't copy that bit */
- dk->state &= ~(1<<MD_DISK_WRITEMOSTLY);
+ dk->state = dinfo->state & ((1<<MD_DISK_ACTIVE) |
+ (1<<MD_DISK_SYNC));
sb->this_disk = sb->disks[dinfo->number];
sb->sb_csum = calc_sb0_csum(sb);
if (dsize < MD_RESERVED_SECTORS*512)
return 2;
+ if (st->other) {
+ /* Writing out v1.0 metadata for --update=metadata */
+ int ret = 0;
+
+ offset = dsize/512 - 8*2;
+ offset &= ~(4*2-1);
+ offset *= 512;
+ if (lseek64(fd, offset, 0)< 0LL)
+ ret = 3;
+ else if (write(fd, st->other, 1024) != 1024)
+ ret = 4;
+ else
+ fsync(fd);
+ free(st->other);
+ st->other = NULL;
+ return ret;
+ }
+
offset = MD_NEW_SIZE_SECTORS(dsize>>9);
offset *= 512;
if (super->state & (1<<MD_SB_BITMAP_PRESENT)) {
struct bitmap_super_s * bm = (struct bitmap_super_s*)(super+1);
if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC)
- if (write(fd, bm, ROUND_UP(sizeof(*bm),4096)) !=
+ if (write(fd, bm, ROUND_UP(sizeof(*bm),4096)) !=
ROUND_UP(sizeof(*bm),4096))
return 5;
}
for (di = st->info ; di && ! rv ; di = di->next) {
- if (di->disk.state == 1)
+ if (di->disk.state & (1 << MD_DISK_FAULTY))
continue;
if (di->fd == -1)
continue;
return 1;
if (!first) {
if (posix_memalign((void**)&first, 4096,
- MD_SB_BYTES +
+ MD_SB_BYTES +
ROUND_UP(sizeof(struct bitmap_super_s), 4096)) != 0) {
- pr_err("%s could not allocate superblock\n", __func__);
+ pr_err("could not allocate superblock\n");
return 1;
}
memcpy(first, second, MD_SB_BYTES + sizeof(struct bitmap_super_s));
return 0;
}
-
static void free_super0(struct supertype *st);
static int load_super0(struct supertype *st, int fd, char *devname)
devname, dsize);
return 1;
}
+ st->devsize = dsize;
offset = MD_NEW_SIZE_SECTORS(dsize>>9);
offset *= 512;
- ioctl(fd, BLKFLSBUF, 0); /* make sure we read current data */
-
if (lseek64(fd, offset, 0)< 0LL) {
if (devname)
pr_err("Cannot seek to superblock on %s: %s\n",
if (posix_memalign((void**)&super, 4096,
MD_SB_BYTES +
ROUND_UP(sizeof(bitmap_super_t), 4096)) != 0) {
- pr_err("%s could not allocate superblock\n", __func__);
+ pr_err("could not allocate superblock\n");
return 1;
}
{
struct supertype *st = xcalloc(1, sizeof(*st));
- st->container_dev = NoMdDev;
+ st->container_devnm[0] = 0;
st->ss = &super0;
st->info = NULL;
st->minor_version = 90;
bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MD_SB_BYTES);
int uuid[4];
-
min_chunk = 4096; /* sub-page chunks don't work yet.. */
bits = (size * 512) / min_chunk + 1;
while (bits > max_bits) {
return 1;
}
-
static void locate_bitmap0(struct supertype *st, int fd)
{
unsigned long long dsize;
}
if (size >= tbmax * 2ULL*1024*1024*1024) {
if (verbose)
- pr_err("0.90 metadata supports at most "
- "%d terabytes per device\n", tbmax);
+ pr_err("0.90 metadata supports at most %d terabytes per device\n", tbmax);
return 0;
}
- if (chunk && *chunk == UnSet)
+ if (*chunk == UnSet)
*chunk = DEFAULT_CHUNK;
if (!subdev)
.write_init_super = write_init_super0,
.validate_geometry = validate_geometry0,
.add_to_super = add_to_super0,
+ .copy_metadata = copy_metadata0,
#endif
.match_home = match_home0,
.uuid_from_super = uuid_from_super0,
projects / thirdparty / mdadm.git / blobdiff