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imsm: fix: report aligned component size value 

OROM can create array with chunk size not aligned.
To resolve this problem in mdadm, metadata handler has to report
component size aligned value for mdadm operations
while metadata value stays unchanged.

Do not correct alignment for raid1 and in error case.

Correction allows check in analyse_change() (Grow.c:905) to pass.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Adam Kwolek 2011-04-06 12:40:31 +10:00 committed by NeilBrown
parent 2a4a08e7d3
commit 139dae1137
1 changed files with 16 additions and 0 deletions
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16
super-intel.c
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@ -1745,6 +1745,7 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
struct imsm_map *map_to_analyse = map;
struct dl *dl;
char *devname;
unsigned int component_size_alligment;
int map_disks = info->array.raid_disks;
if (prev_map)
@ -1824,6 +1825,21 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
info->data_offset = __le32_to_cpu(map_to_analyse->pba_of_lba0);
info->component_size =
__le32_to_cpu(map_to_analyse->blocks_per_member);
/* check component size aligment
*/
component_size_alligment =
info->component_size % (info->array.chunk_size/512);
if (component_size_alligment &&
(info->array.level != 1) && (info->array.level != UnSet)) {
dprintf("imsm: reported component size alligned from %llu ",
info->component_size);
info->component_size -= component_size_alligment;
dprintf("to %llu (%i).\n",
info->component_size, component_size_alligment);
}
memset(info->uuid, 0, sizeof(info->uuid));
info->recovery_start = MaxSector;