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imsm: FIX: support general migration by getinfo_super_imsm_volume 

Add support for reading volume information during migration process.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Adam Kwolek 2011-01-06 18:28:56 +11:00 committed by NeilBrown
parent 834acc0bd2
commit b335e59305
1 changed files with 22 additions and 7 deletions
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29
super-intel.c
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@ -1563,26 +1563,39 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
struct imsm_dev *dev = get_imsm_dev(super, super->current_vol);
struct imsm_map *map = get_imsm_map(dev, 0);
struct imsm_map *prev_map = get_imsm_map(dev, 1);
struct imsm_map *map_to_analyse = map;
struct dl *dl;
char *devname;
int map_disks = info->array.raid_disks;
if (prev_map)
map_to_analyse = prev_map;
for (dl = super->disks; dl; dl = dl->next)
if (dl->raiddisk == info->disk.raid_disk)
break;
info->container_member = super->current_vol;
info->array.raid_disks = map->num_members;
info->array.level = get_imsm_raid_level(map);
info->array.raid_disks = map_to_analyse->num_members;
info->array.level = get_imsm_raid_level(map_to_analyse);
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) << 9;
info->array.chunk_size =
__le16_to_cpu(map_to_analyse->blocks_per_strip) << 9;
info->array.state = !dev->vol.dirty;
info->custom_array_size = __le32_to_cpu(dev->size_high);
info->custom_array_size <<= 32;
info->custom_array_size |= __le32_to_cpu(dev->size_low);
if (prev_map) {
info->new_level = get_imsm_raid_level(map);
info->new_layout = imsm_level_to_layout(info->new_level);
info->new_chunk = __le16_to_cpu(map->blocks_per_strip) << 9;
} else {
info->new_level = UnSet;
info->new_layout = UnSet;
info->new_chunk = info->array.chunk_size;
}
info->disk.major = 0;
info->disk.minor = 0;
if (dl) {
@ -1590,8 +1603,9 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
info->disk.minor = dl->minor;
}
info->data_offset = __le32_to_cpu(map->pba_of_lba0);
info->component_size = __le32_to_cpu(map->blocks_per_member);
info->data_offset = __le32_to_cpu(map_to_analyse->pba_of_lba0);
info->component_size =
__le32_to_cpu(map_to_analyse->blocks_per_member);
memset(info->uuid, 0, sizeof(info->uuid));
info->recovery_start = MaxSector;
info->reshape_active = (prev_map != NULL);
@ -1600,7 +1614,8 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
else
info->delta_disks = 0;
if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty) {
if (map_to_analyse->map_state == IMSM_T_STATE_UNINITIALIZED ||
dev->vol.dirty) {
info->resync_start = 0;
} else if (dev->vol.migr_state) {
switch (migr_type(dev)) {