* Email: <neilb@suse.de>
*/
+#include <stddef.h>
#include "mdadm.h"
/*
* The version-1 superblock :
|MD_FEATURE_NEW_OFFSET \
)
-#ifndef offsetof
-#define offsetof(t,f) ((size_t)&(((t*)0)->f))
-#endif
static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb)
{
unsigned int disk_csum, csum;
if (!bsize || bsize > 4096 || len > 4096) {
if (!bsize)
- fprintf(stderr, "WARNING - aread() called with "
- "invalid block size\n");
+ fprintf(stderr, "WARNING - aread() called with invalid block size\n");
return -1;
}
b = ROUND_UP_PTR((char *)abuf, 4096);
bsize = afd->blk_sz;
if (!bsize || bsize > 4096 || len > 4096) {
if (!bsize)
- fprintf(stderr, "WARNING - awrite() called with "
- "invalid block size\n");
+ fprintf(stderr, "WARNING - awrite() called with invalid block size\n");
return -1;
}
b = ROUND_UP_PTR((char *)abuf, 4096);
size = __le32_to_cpu(sb->bblog_size)* 512;
if (posix_memalign((void**)&bbl, 4096, size) != 0) {
- pr_err("%s could not allocate badblocks list\n", __func__);
+ pr_err("could not allocate badblocks list\n");
return 0;
}
offset = __le64_to_cpu(sb->super_offset) +
/* set data_size to device size less data_offset */
struct misc_dev_info *misc = (struct misc_dev_info*)
(st->sb + MAX_SB_SIZE + BM_SUPER_SIZE);
- printf("Size was %llu\n", (unsigned long long)
- __le64_to_cpu(sb->data_size));
sb->data_size = __cpu_to_le64(
misc->device_size - __le64_to_cpu(sb->data_offset));
- printf("Size is %llu\n", (unsigned long long)
- __le64_to_cpu(sb->data_size));
} else if (strcmp(update, "revert-reshape") == 0) {
rv = -2;
if (!(sb->feature_map & __cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE)))
* So we reject a revert-reshape unless the
* alignment is good.
*/
- reshape_sectors = __le64_to_cpu(sb->reshape_position);
- reshape_chunk = __le32_to_cpu(sb->new_chunk);
- reshape_chunk *= __le32_to_cpu(sb->raid_disks) - __le32_to_cpu(sb->delta_disks) -
- (__le32_to_cpu(sb->level)==6 ? 2 : 1);
- if (reshape_sectors % reshape_chunk) {
- pr_err("Reshape position is not suitably aligned.\n");
- pr_err("Try normal assembly as stop again\n");
- return -2;
+ if (__le32_to_cpu(sb->level) >= 4 &&
+ __le32_to_cpu(sb->level) <= 6) {
+ reshape_sectors = __le64_to_cpu(sb->reshape_position);
+ reshape_chunk = __le32_to_cpu(sb->new_chunk);
+ reshape_chunk *= __le32_to_cpu(sb->raid_disks) - __le32_to_cpu(sb->delta_disks) -
+ (__le32_to_cpu(sb->level)==6 ? 2 : 1);
+ if (reshape_sectors % reshape_chunk) {
+ pr_err("Reshape position is not suitably aligned.\n");
+ pr_err("Try normal assembly and stop again\n");
+ return -2;
+ }
}
sb->raid_disks = __cpu_to_le32(__le32_to_cpu(sb->raid_disks) -
__le32_to_cpu(sb->delta_disks));
sb->chunksize = temp;
if (sb->feature_map & __cpu_to_le32(MD_FEATURE_NEW_OFFSET)) {
- sb->data_offset = __cpu_to_le64(__le64_to_cpu(sb->data_offset) +
- (long)(int32_t)__le32_to_cpu(sb->new_offset));
- sb->new_offset = __cpu_to_le32(-(int32_t)__le32_to_cpu(sb->new_offset));
+ long offset_delta = (int32_t)__le32_to_cpu(sb->new_offset);
+ sb->data_offset = __cpu_to_le64(__le64_to_cpu(sb->data_offset) + offset_delta);
+ sb->new_offset = __cpu_to_le32(-offset_delta);
+ sb->data_size = __cpu_to_le64(__le64_to_cpu(sb->data_size) - offset_delta);
}
}
} else if (strcmp(update, "_reshape_progress")==0)
int sbsize;
if (posix_memalign((void**)&sb, 4096, SUPER1_SIZE) != 0) {
- pr_err("%s could not allocate superblock\n", __func__);
+ pr_err("could not allocate superblock\n");
return 0;
}
memset(sb, 0, SUPER1_SIZE);
int rfd;
int rv = 0;
unsigned long long bm_space;
- unsigned long long reserved;
struct devinfo *di;
unsigned long long dsize, array_size;
- unsigned long long sb_offset, headroom;
+ unsigned long long sb_offset;
unsigned long long data_offset;
for (di = st->info; di; di = di->next) {
- if (di->disk.state == 1)
+ if (di->disk.state & (1 << MD_DISK_FAULTY))
continue;
if (di->fd < 0)
continue;
* 0: At least 8K, but less than 12K, from end of device
* 1: At start of device
* 2: 4K from start of device.
- * Depending on the array size, we might leave extra space
- * for a bitmap.
- * Also leave 4K for bad-block log.
+ * data_offset has already been set.
*/
array_size = __le64_to_cpu(sb->size);
/* work out how much space we left for a bitmap,
* Add 8 sectors for bad block log */
bm_space = choose_bm_space(array_size) + 8;
- /* We try to leave 0.1% at the start for reshape
- * operations, but limit this to 128Meg (0.1% of 10Gig)
- * which is plenty for efficient reshapes
- * However we make it at least 2 chunks as one chunk
- * is minimum needed for reshape.
- */
- headroom = 128 * 1024 * 2;
- while (headroom << 10 > array_size &&
- headroom/2 >= __le32_to_cpu(sb->chunksize) * 2)
- headroom >>= 1;
-
data_offset = di->data_offset;
+ if (data_offset == INVALID_SECTORS)
+ data_offset = st->data_offset;
switch(st->minor_version) {
case 0:
+ if (data_offset == INVALID_SECTORS)
+ data_offset = 0;
sb_offset = dsize;
sb_offset -= 8*2;
sb_offset &= ~(4*2-1);
+ sb->data_offset = __cpu_to_le64(data_offset);
sb->super_offset = __cpu_to_le64(sb_offset);
- if (data_offset == INVALID_SECTORS)
- sb->data_offset = 0;
if (sb_offset < array_size + bm_space)
bm_space = sb_offset - array_size;
sb->data_size = __cpu_to_le64(sb_offset - bm_space);
break;
case 1:
sb->super_offset = __cpu_to_le64(0);
- if (data_offset == INVALID_SECTORS) {
- reserved = bm_space + 4*2;
- if (reserved < headroom)
- reserved = headroom;
- if (reserved + array_size > dsize)
- reserved = dsize - array_size;
- /* Try for multiple of 1Meg so it is nicely aligned */
- #define ONE_MEG (2*1024)
- if (reserved > ONE_MEG)
- reserved = (reserved/ONE_MEG) * ONE_MEG;
-
- /* force 4K alignment */
- reserved &= ~7ULL;
-
- } else
- reserved = data_offset;
-
- sb->data_offset = __cpu_to_le64(reserved);
- sb->data_size = __cpu_to_le64(dsize - reserved);
- if (reserved >= 8 + 32*2 + 8) {
+ if (data_offset == INVALID_SECTORS)
+ data_offset = 16;
+
+ sb->data_offset = __cpu_to_le64(data_offset);
+ sb->data_size = __cpu_to_le64(dsize - data_offset);
+ if (data_offset >= 8 + 32*2 + 8) {
sb->bblog_size = __cpu_to_le16(8);
sb->bblog_offset = __cpu_to_le32(8 + 32*2);
- } else if (reserved >= 16) {
+ } else if (data_offset >= 16) {
sb->bblog_size = __cpu_to_le16(8);
- sb->bblog_offset = __cpu_to_le32(reserved-8);
+ sb->bblog_offset = __cpu_to_le32(data_offset-8);
}
break;
case 2:
sb_offset = 4*2;
- sb->super_offset = __cpu_to_le64(4*2);
- if (data_offset == INVALID_SECTORS) {
- if (4*2 + 4*2 + bm_space + array_size
- > dsize)
- bm_space = dsize - array_size
- - 4*2 - 4*2;
-
- reserved = bm_space + 4*2 + 4*2;
- if (reserved < headroom)
- reserved = headroom;
- if (reserved + array_size > dsize)
- reserved = dsize - array_size;
- /* Try for multiple of 1Meg so it is nicely aligned */
- #define ONE_MEG (2*1024)
- if (reserved > ONE_MEG)
- reserved = (reserved/ONE_MEG) * ONE_MEG;
-
- /* force 4K alignment */
- reserved &= ~7ULL;
-
- } else
- reserved = data_offset;
-
- sb->data_offset = __cpu_to_le64(reserved);
- sb->data_size = __cpu_to_le64(dsize - reserved);
- if (reserved >= 16 + 32*2 + 8) {
+ sb->super_offset = __cpu_to_le64(sb_offset);
+ if (data_offset == INVALID_SECTORS)
+ data_offset = 24;
+
+ sb->data_offset = __cpu_to_le64(data_offset);
+ sb->data_size = __cpu_to_le64(dsize - data_offset);
+ if (data_offset >= 16 + 32*2 + 8) {
sb->bblog_size = __cpu_to_le16(8);
sb->bblog_offset = __cpu_to_le32(8 + 32*2);
- } else if (reserved >= 16+16) {
+ } else if (data_offset >= 16+16) {
sb->bblog_size = __cpu_to_le16(8);
/* '8' sectors for the bblog, and another '8'
* because we want offset from superblock, not
* start of device.
*/
- sb->bblog_offset = __cpu_to_le32(reserved-8-8);
+ sb->bblog_offset = __cpu_to_le32(data_offset-8-8);
}
break;
default:
- pr_err("Failed to write invalid "
- "metadata format 1.%i to %s\n",
+ pr_err("Failed to write invalid metadata format 1.%i to %s\n",
st->minor_version, di->devname);
rv = -EINVAL;
goto out;
}
+ if (conf_get_create_info()->bblist == 0) {
+ sb->bblog_size = 0;
+ sb->bblog_offset = 0;
+ }
sb->sb_csum = calc_sb_1_csum(sb);
rv = store_super1(st, di->fd);
if (!first) {
if (posix_memalign((void**)&first, 4096, SUPER1_SIZE) != 0) {
- pr_err("%s could not allocate superblock\n", __func__);
+ pr_err("could not allocate superblock\n");
return 1;
}
memcpy(first, second, SUPER1_SIZE);
}
if (posix_memalign((void**)&super, 4096, SUPER1_SIZE) != 0) {
- pr_err("%s could not allocate superblock\n",
- __func__);
+ pr_err("could not allocate superblock\n");
return 1;
}
misc = (struct misc_dev_info*) (((char*)super)+MAX_SB_SIZE+BM_SUPER_SIZE);
misc->device_size = dsize;
+ if (st->data_offset == INVALID_SECTORS)
+ st->data_offset = __le64_to_cpu(super->data_offset);
/* Now check on the bitmap superblock */
if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0)
st->ss = &super1;
st->max_devs = MAX_DEVS;
st->sb = NULL;
+ st->data_offset = INVALID_SECTORS;
/* leading zeros can be safely ignored. --detail generates them. */
while (*arg == '0')
arg++;
* superblock type st, and reserving 'reserve' sectors for
* a possible bitmap
*/
-static __u64 _avail_size1(struct supertype *st, __u64 devsize,
- unsigned long long data_offset, int chunksize)
+static __u64 avail_size1(struct supertype *st, __u64 devsize,
+ unsigned long long data_offset)
{
struct mdp_superblock_1 *super = st->sb;
int bmspace = 0;
+ int bbspace = 0;
if (devsize < 24)
return 0;
- if (super == NULL)
- /* creating: allow suitable space for bitmap */
- bmspace = choose_bm_space(devsize);
#ifndef MDASSEMBLE
- else if (__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) {
+ if (__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) {
/* hot-add. allow for actual size of bitmap */
struct bitmap_super_s *bsb;
bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE);
}
#endif
/* Allow space for bad block log */
- if (super && super->bblog_size)
- devsize -= __le16_to_cpu(super->bblog_size);
- else
- devsize -= 8;
+ if (super->bblog_size)
+ bbspace = __le16_to_cpu(super->bblog_size);
if (st->minor_version < 0)
/* not specified, so time to set default */
st->minor_version = 2;
+ if (data_offset == INVALID_SECTORS)
+ data_offset = st->data_offset;
+
if (data_offset != INVALID_SECTORS)
switch(st->minor_version) {
case 0:
- return devsize - data_offset - 8*2;
+ return devsize - data_offset - 8*2 - bbspace;
case 1:
case 2:
return devsize - data_offset;
devsize -= bmspace;
- if (super == NULL && st->minor_version > 0) {
- /* haven't committed to a size yet, so allow some
- * slack for space for reshape.
- * Limit slack to 128M, but aim for about 0.1%
- */
- unsigned long long headroom = 128*1024*2;
- while ((headroom << 10) > devsize &&
- (chunksize == 0 ||
- headroom / 2 >= ((unsigned)chunksize*2)*2))
- headroom >>= 1;
- devsize -= headroom;
- }
switch(st->minor_version) {
case 0:
/* at end */
- return ((devsize - 8*2 ) & ~(4*2-1));
+ return ((devsize - 8*2 - bbspace ) & ~(4*2-1));
case 1:
/* at start, 4K for superblock and possible bitmap */
- return devsize - 4*2;
+ return devsize - 4*2 - bbspace;
case 2:
/* 4k from start, 4K for superblock and possible bitmap */
- return devsize - (4+4)*2;
+ return devsize - (4+4)*2 - bbspace;
}
return 0;
}
-static __u64 avail_size1(struct supertype *st, __u64 devsize,
- unsigned long long data_offset)
-{
- return _avail_size1(st, devsize, data_offset, 0);
-}
static int
add_internal_bitmap1(struct supertype *st,
* been left.
*/
offset = 0;
- room = choose_bm_space(__le64_to_cpu(sb->size));
bbl_size = 8;
+ room = choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size;
} else {
room = __le64_to_cpu(sb->super_offset)
- __le64_to_cpu(sb->data_offset)
bbl_size = -bbl_offset;
if (!may_change || (room < 3*2 &&
- __le32_to_cpu(sb->max_dev) <= 384)) {
+ __le32_to_cpu(sb->max_dev) <= 384)) {
room = 3*2;
offset = 1*2;
bbl_size = 0;
case 2: /* between superblock and data */
if (creating) {
offset = 4*2;
- room = choose_bm_space(__le64_to_cpu(sb->size));
bbl_size = 8;
+ room = choose_bm_space(__le64_to_cpu(sb->size)) + bbl_size;
} else {
room = __le64_to_cpu(sb->data_offset)
- __le64_to_cpu(sb->super_offset);
/* Limit to 128K of bitmap when chunk size not requested */
room = 128*2;
+ if (room <= 1)
+ /* No room for a bitmap */
+ return 0;
+
max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8;
min_chunk = 4096; /* sub-page chunks don't work yet.. */
bms->daemon_sleep = __cpu_to_le32(delay);
bms->sync_size = __cpu_to_le64(size);
bms->write_behind = __cpu_to_le32(write_behind);
+ bms->nodes = __cpu_to_le32(st->nodes);
+ if (st->cluster_name)
+ strncpy((char *)bms->cluster_name,
+ st->cluster_name, strlen(st->cluster_name));
*chunkp = chunk;
return 1;
void *buf;
int towrite, n;
struct align_fd afd;
+ unsigned int i = 0;
init_afd(&afd, fd);
if (posix_memalign(&buf, 4096, 4096))
return -ENOMEM;
- memset(buf, 0xff, 4096);
- memcpy(buf, (char *)bms, sizeof(bitmap_super_t));
-
- towrite = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9);
- towrite = (towrite+7) >> 3; /* bits to bytes */
- towrite += sizeof(bitmap_super_t);
- towrite = ROUND_UP(towrite, 512);
- while (towrite > 0) {
- n = towrite;
- if (n > 4096)
- n = 4096;
- n = awrite(&afd, buf, n);
- if (n > 0)
- towrite -= n;
+ do {
+ /* Only the bitmap[0] should resync
+ * whole device on initial assembly
+ */
+ if (i)
+ memset(buf, 0x00, 4096);
else
+ memset(buf, 0xff, 4096);
+ memcpy(buf, (char *)bms, sizeof(bitmap_super_t));
+
+ towrite = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9);
+ towrite = (towrite+7) >> 3; /* bits to bytes */
+ towrite += sizeof(bitmap_super_t);
+ /* we need the bitmaps to be at 4k boundary */
+ towrite = ROUND_UP(towrite, 4096);
+ while (towrite > 0) {
+ n = towrite;
+ if (n > 4096)
+ n = 4096;
+ n = awrite(&afd, buf, n);
+ if (n > 0)
+ towrite -= n;
+ else
+ break;
+ if (i)
+ memset(buf, 0x00, 4096);
+ else
+ memset(buf, 0xff, 4096);
+ }
+ fsync(fd);
+ if (towrite) {
+ rv = -2;
break;
- memset(buf, 0xff, 4096);
- }
- fsync(fd);
- if (towrite)
- rv = -2;
+ }
+ } while (++i < __le32_to_cpu(bms->nodes));
free(buf);
return rv;
char *subdev, unsigned long long *freesize,
int verbose)
{
- unsigned long long ldsize;
+ unsigned long long ldsize, devsize;
+ int bmspace;
+ unsigned long long headroom;
int fd;
if (level == LEVEL_CONTAINER) {
pr_err("1.x metadata does not support containers\n");
return 0;
}
- if (chunk && *chunk == UnSet)
+ if (*chunk == UnSet)
*chunk = DEFAULT_CHUNK;
if (!subdev)
return 1;
+ if (st->minor_version < 0)
+ /* not specified, so time to set default */
+ st->minor_version = 2;
+
fd = open(subdev, O_RDONLY|O_EXCL, 0);
if (fd < 0) {
if (verbose)
}
close(fd);
- *freesize = _avail_size1(st, ldsize >> 9, data_offset, *chunk);
+ devsize = ldsize >> 9;
+ if (devsize < 24) {
+ *freesize = 0;
+ return 0;
+ }
+
+ /* creating: allow suitable space for bitmap */
+ bmspace = choose_bm_space(devsize);
+
+ if (data_offset == INVALID_SECTORS)
+ data_offset = st->data_offset;
+ if (data_offset == INVALID_SECTORS)
+ switch (st->minor_version) {
+ case 0:
+ data_offset = 0;
+ break;
+ case 1:
+ case 2:
+ /* Choose data offset appropriate for this device
+ * and use as default for whole array.
+ * The data_offset must allow for bitmap space
+ * and base metadata, should allow for some headroom
+ * for reshape, and should be rounded to multiple
+ * of 1M.
+ * Headroom is limited to 128M, but aim for about 0.1%
+ */
+ headroom = 128*1024*2;
+ while ((headroom << 10) > devsize &&
+ (*chunk == 0 ||
+ headroom / 2 >= ((unsigned)(*chunk)*2)*2))
+ headroom >>= 1;
+ data_offset = 12*2 + bmspace + headroom;
+ #define ONE_MEG (2*1024)
+ if (data_offset > ONE_MEG)
+ data_offset = (data_offset / ONE_MEG) * ONE_MEG;
+ break;
+ }
+ if (st->data_offset == INVALID_SECTORS)
+ st->data_offset = data_offset;
+ switch(st->minor_version) {
+ case 0: /* metadata at end. Round down and subtract space to reserve */
+ devsize = (devsize & ~(4ULL*2-1));
+ /* space for metadata, bblog, bitmap */
+ devsize -= 8*2 + 8 + bmspace;
+ break;
+ case 1:
+ case 2:
+ devsize -= data_offset;
+ break;
+ }
+ *freesize = devsize;
return 1;
}
#endif /* MDASSEMBLE */
projects / thirdparty / mdadm.git / blobdiff