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imsm: add new chunk size to metadata update 

Put information about new chunk size change in to migration metadata
update allowing simultaneous level change and re-striping.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Przemyslaw Czarnowski 2011-05-04 17:13:22 +02:00 committed by NeilBrown
parent a29911dac1
commit 4bba043921
1 changed files with 19 additions and 1 deletions
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20
super-intel.c
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@ -354,6 +354,7 @@ struct imsm_update_reshape_migration {
int subdev;
int new_level;
int new_layout;
int new_chunksize;
int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */
};
@ -6157,6 +6158,12 @@ static int apply_reshape_migration_update(struct imsm_update_reshape_migration *
id->dev = new_dev;
tofree = (void **)dev;
/* update chunk size
*/
if (u->new_chunksize > 0)
map->blocks_per_strip =
__cpu_to_le16(u->new_chunksize * 2);
/* add disk
*/
if ((u->new_level != 5) ||
@ -7368,14 +7375,25 @@ static int imsm_create_metadata_update_for_migration(
u->new_layout = geo->layout;
u->new_raid_disks = u->old_raid_disks = geo->raid_disks;
u->new_disks[0] = -1;
u->new_chunksize = -1;
dev = get_imsm_dev(super, u->subdev);
if (dev) {
struct imsm_map *map;
map = get_imsm_map(dev, 0);
if (map)
if (map) {
int current_chunk_size =
__le16_to_cpu(map->blocks_per_strip) / 2;
if (geo->chunksize != current_chunk_size) {
u->new_chunksize = geo->chunksize / 1024;
dprintf("imsm: "
"chunk size change from %i to %i\n",
current_chunk_size, u->new_chunksize);
}
previous_level = map->raid_level;
}
}
if ((geo->level == 5) && (previous_level == 0)) {
struct mdinfo *spares = NULL;