human_size(__le64_to_cpu(sb->size)<<9));
}
if (sb->data_offset)
- printf(" Data Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->data_offset));
- if (sb->super_offset)
- printf(" Super Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->super_offset));
+ printf(" Data Offset : %llu sectors\n",
+ (unsigned long long)__le64_to_cpu(sb->data_offset));
+ printf(" Super Offset : %llu sectors\n",
+ (unsigned long long)__le64_to_cpu(sb->super_offset));
if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_RECOVERY_OFFSET)
printf("Recovery Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->recovery_offset));
printf(" State : %s\n", (__le64_to_cpu(sb->resync_offset)+1)? "active":"clean");
rv = 1;
}
}
-#if 0
- if (strcmp(update, "newdev") == 0) {
- int d = info->disk.number;
- memset(&sb->disks[d], 0, sizeof(sb->disks[d]));
- sb->disks[d].number = d;
- sb->disks[d].major = info->disk.major;
- sb->disks[d].minor = info->disk.minor;
- sb->disks[d].raid_disk = info->disk.raid_disk;
- sb->disks[d].state = info->disk.state;
- sb->this_disk = sb->disks[d];
- }
-#endif
if (strcmp(update, "grow") == 0) {
sb->raid_disks = __cpu_to_le32(info->array.raid_disks);
/* FIXME */
return rv;
}
-
-static __u64 event_super1(void *sbv)
-{
- struct mdp_superblock_1 *sb = sbv;
- return __le64_to_cpu(sb->events);
-}
-
static int init_super1(struct supertype *st, void **sbp, mdu_array_info_t *info,
unsigned long long size, char *name, char *homehost)
{
int fd = open(devname, O_RDWR | O_EXCL);
int rfd;
int rv;
+ int bm_space;
- unsigned long size, space;
+ unsigned long space;
unsigned long long dsize, array_size;
long long sb_offset;
if (ioctl(fd, BLKGETSIZE64, &dsize) != 0)
#endif
{
+ unsigned long size;
if (ioctl(fd, BLKGETSIZE, &size))
return 1;
else
* for a bitmap.
*/
array_size = __le64_to_cpu(sb->size);
+ /* work out how much space we left of a bitmap */
+ if (array_size >= 200*1024*1024*2)
+ bm_space = 128*2;
+ else if (array_size > 8*1024*1024*2)
+ bm_space = 64*2;
+ else
+ bm_space = 0;
+
switch(st->minor_version) {
case 0:
sb_offset = dsize;
sb_offset &= ~(4*2-1);
sb->super_offset = __cpu_to_le64(sb_offset);
sb->data_offset = __cpu_to_le64(0);
- if (sb_offset-64*2 >= array_size && array_size > 8*1024*1024*2)
- sb->data_size = __cpu_to_le64(sb_offset-64*2);
- else
- sb->data_size = __cpu_to_le64(sb_offset);
+ sb->data_size = __cpu_to_le64(sb_offset - bm_space);
break;
case 1:
sb->super_offset = __cpu_to_le64(0);
- if (dsize - 64*2 >= array_size && array_size > 8*1024*1024*2)
- space = 64*2;
- else
- space = 4*2;
- sb->data_offset = __cpu_to_le64(space); /* leave space for super and bitmap */
- sb->data_size = __cpu_to_le64(dsize - space);
+ sb->data_offset = __cpu_to_le64(bm_space + 4*2);
+ sb->data_size = __cpu_to_le64(dsize - bm_space - 4*2);
break;
case 2:
sb_offset = 4*2;
space = 64*2;
else
space = 4*2;
- sb->super_offset = __cpu_to_le64(sb_offset);
- sb->data_offset = __cpu_to_le64(sb_offset+space);
- sb->data_size = __cpu_to_le64(dsize - 4*2 - space);
+ sb->super_offset = __cpu_to_le64(4*2);
+ sb->data_offset = __cpu_to_le64(4*2 + 4*2 + bm_space);
+ sb->data_size = __cpu_to_le64(dsize - 4*2 - 4*2 - bm_space );
break;
default:
return -EINVAL;
return 0;
/* if the device is bigger than 8Gig, save 64k for bitmap usage,
- * if biffer than 200Gig, save 128k
+ * if bigger than 200Gig, save 128k
*/
- if (devsize > 200*1024*1024*2)
+ if (devsize-64*2 >= 200*1024*1024*2)
devsize -= 128*2;
- else if (devsize > 8*1024*1024*2)
+ else if (devsize >= 8*1024*1024*2)
devsize -= 64*2;
switch(st->minor_version) {
static int
add_internal_bitmap1(struct supertype *st, void *sbv,
- int chunk, int delay, int write_behind, unsigned long long size,
+ int *chunkp, int delay, int write_behind,
+ unsigned long long size,
int may_change, int major)
{
/*
* must fit after the superblock.
* If may_change, then this is create, and we can put the bitmap
* before the superblock if we like, or may move the start.
- * For now, just squeeze the bitmap into 3k and don't change anything.
+ * If !may_change, the bitmap MUST live at offset of 1K, until
+ * we get a sysfs interface.
*
* size is in sectors, chunk is in bytes !!!
*/
unsigned long long bits;
- unsigned long long max_bits = (6*512 - sizeof(bitmap_super_t)) * 8;
+ unsigned long long max_bits;
unsigned long long min_chunk;
+ long offset;
+ int chunk = *chunkp;
+ int room;
struct mdp_superblock_1 *sb = sbv;
bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + 1024);
- if (st->minor_version && !may_change &&
- __le64_to_cpu(sb->data_offset) - __le64_to_cpu(sb->super_offset) < 8)
- return 0; /* doesn't fit */
+ switch(st->minor_version) {
+ case 0:
+ /* either 3K after the superblock, or some amount of space
+ * before.
+ */
+ if (may_change) {
+ /* We are creating array, so we *know* how much room has
+ * been left.
+ */
+ offset = 0;
+ if (__le64_to_cpu(sb->size) >= 200*1024*1024*2)
+ room = 128*2;
+ else if (__le64_to_cpu(sb->size) > 8*1024*1024*2)
+ room = 64*2;
+ else {
+ room = 3*2;
+ offset = 2;
+ }
+ } else {
+ room = __le64_to_cpu(sb->super_offset)
+ - __le64_to_cpu(sb->data_offset)
+ - __le64_to_cpu(sb->data_size);
+ /* remove '1 ||' when we can set offset via sysfs */
+ if (1 || (room < 3*2 &&
+ __le32_to_cpu(sb->max_dev) <= 384)) {
+ room = 3*2;
+ offset = 1*2;
+ } else {
+ offset = 0; /* means movable offset */
+ }
+ }
+ break;
+ case 1:
+ case 2: /* between superblock and data */
+ if (may_change) {
+ offset = 4*2;
+ if (__le64_to_cpu(sb->size) >= 200*1024*1024*2)
+ room = 128*2;
+ else if (__le64_to_cpu(sb->size) > 8*1024*1024*2)
+ room = 64*2;
+ else
+ room = 3*2;
+ } else {
+ room = __le64_to_cpu(sb->data_offset)
+ - __le64_to_cpu(sb->super_offset);
+ if (1 || __le32_to_cpu(sb->max_dev) <= 384) {
+ room -= 2;
+ offset = 2;
+ } else {
+ room -= 4*2;
+ offset = 4*2;
+ }
+ }
+ break;
+ }
+ if (chunk == UnSet && room > 128*2)
+ /* Limit to 128K of bitmap when chunk size not requested */
+ room = 128*2;
+ max_bits = (room * 512 - sizeof(bitmap_super_t)) * 8;
min_chunk = 4096; /* sub-page chunks don't work yet.. */
bits = (size*512)/min_chunk +1;
if (chunk == 0) /* rounding problem */
return 0;
- sb->bitmap_offset = __cpu_to_le32(2);
+ if (offset == 0) {
+ bits = (size*512) / chunk + 1;
+ room = ((bits+7)/8 + sizeof(bitmap_super_t) +511)/512;
+ offset = -room;
+ }
+
+ sb->bitmap_offset = __cpu_to_le32(offset);
sb->feature_map = __cpu_to_le32(__le32_to_cpu(sb->feature_map) | 1);
memset(bms, 0, sizeof(*bms));
bms->sync_size = __cpu_to_le64(size);
bms->write_behind = __cpu_to_le32(write_behind);
+ *chunkp = chunk;
return 1;
}
.uuid_from_super = uuid_from_super1,
.getinfo_super = getinfo_super1,
.update_super = update_super1,
- .event_super = event_super1,
.init_super = init_super1,
.add_to_super = add_to_super1,
.store_super = store_super1,
projects / thirdparty / mdadm.git / blobdiff