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| author | NeilBrown <neilb@suse.de> | 2012-05-22 13:55:33 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2012-05-22 13:55:33 +1000 |
| commit | 63aced61023a054825ffd6e33ac1ab99036dadd2 (patch) | |
| tree | b41a4cde223c78ec787df3b02d839e1242d2a9e5 /drivers/md | |
| parent | da7613b8b042ab1d3ea55459ed97301e4a2097bb (diff) | |
| download | linux-63aced61023a054825ffd6e33ac1ab99036dadd2.tar.gz linux-63aced61023a054825ffd6e33ac1ab99036dadd2.tar.bz2 linux-63aced61023a054825ffd6e33ac1ab99036dadd2.zip | |
md/raid10: Remove extras after reshape to smaller number of devices.
When a reshape which reduced the number of devices finishes
we must remove the extra devices.
So ensure that raid10_remove_disk won't try to keep them, and
have raid10_finish_reshape clear the 'in_sync' flag. Then
remove_and_add_spares will be able to remove them.
Reported-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/raid10.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index ae2a5a4c6bc5..987db37cb875 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1731,6 +1731,7 @@ static int raid10_remove_disk(struct mddev *mddev, struct md_rdev *rdev) if (!test_bit(Faulty, &rdev->flags) && mddev->recovery_disabled != p->recovery_disabled && (!p->replacement || p->replacement == rdev) && + number < conf->geo.raid_disks && enough(conf, -1)) { err = -EBUSY; goto abort; @@ -4485,6 +4486,18 @@ static void raid10_finish_reshape(struct mddev *mddev) mddev->resync_max_sectors = size; set_capacity(mddev->gendisk, mddev->array_sectors); revalidate_disk(mddev->gendisk); + } else { + int d; + for (d = conf->geo.raid_disks ; + d < conf->geo.raid_disks - mddev->delta_disks; + d++) { + struct md_rdev *rdev = conf->mirrors[d].rdev; + if (rdev) + clear_bit(In_sync, &rdev->flags); + rdev = conf->mirrors[d].replacement; + if (rdev) + clear_bit(In_sync, &rdev->flags); + } } mddev->layout = mddev->new_layout; mddev->chunk_sectors = 1 << conf->geo.chunk_shift; |