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imsm: FIX: initalize reshape progress as it is stored in metatdata 

reshape prodess cannot be restarted due to no checkpoint information
in mdinfo.
When metadata is read during reshape process or reshape restart,
rehape_progress (mdinfo field) has to be initialized to value
stored in metadata. This allows start reshape from stored
in metadata checkpoint.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Adam Kwolek 2011-02-22 15:13:23 +01:00 committed by NeilBrown
parent c21e737ba1
commit d2e6d5d65b
1 changed files with 10 additions and 1 deletions
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11
super-intel.c
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@ -1784,6 +1784,7 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
else
info->delta_disks = 0;
info->reshape_progress = 0;
if (map_to_analyse->map_state == IMSM_T_STATE_UNINITIALIZED ||
dev->vol.dirty) {
info->resync_start = 0;
@ -1797,6 +1798,15 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
info->resync_start = blocks_per_unit * units;
break;
}
case MIGR_GEN_MIGR: {
__u64 blocks_per_unit = blocks_per_migr_unit(dev);
__u64 units = __le32_to_cpu(dev->vol.curr_migr_unit);
info->reshape_progress = blocks_per_unit * units;
dprintf("IMSM: General Migration checkpoint : %llu "
"(%llu) -> read reshape progress : %llu\n",
units, blocks_per_unit, info->reshape_progress);
}
case MIGR_VERIFY:
/* we could emulate the checkpointing of
* 'sync_action=check' migrations, but for now
@ -1804,7 +1814,6 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
*/
case MIGR_REBUILD:
/* this is handled by container_content_imsm() */
case MIGR_GEN_MIGR:
case MIGR_STATE_CHANGE:
/* FIXME handle other migrations */
default: