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authorNeilBrown <neilb@suse.de>2008-08-05 15:54:13 +1000
committerNeilBrown <neilb@suse.de>2008-08-05 15:56:32 +1000
commitc89a8eee61540df04fc83f32f51ef0f46ec018b1 (patch)
tree7bffba40357f654de8ed31bc6a0e7468daa61234
parentac4090d24c6a26211bc4523d920376e054d4f3f8 (diff)
Allow faulty devices to be removed from a readonly array.
Removing faulty devices from an array is a two stage process. First the device is moved from being a part of the active array to being similar to a spare device. Then it can be removed by a request from user space. The first step is currently not performed for read-only arrays, so the second step can never succeed. So allow readonly arrays to remove failed devices (which aren't blocked). Signed-off-by: NeilBrown <neilb@suse.de>
-rw-r--r--drivers/md/md.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 6eb95451f16..25b893ec562 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -6003,7 +6003,7 @@ static int remove_and_add_spares(mddev_t *mddev)
}
}
- if (mddev->degraded) {
+ if (mddev->degraded && ! mddev->ro) {
rdev_for_each(rdev, rtmp, mddev) {
if (rdev->raid_disk >= 0 &&
!test_bit(In_sync, &rdev->flags) &&
@@ -6077,6 +6077,8 @@ void md_check_recovery(mddev_t *mddev)
flush_signals(current);
}
+ if (mddev->ro && !test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))
+ return;
if ( ! (
(mddev->flags && !mddev->external) ||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery) ||
@@ -6090,6 +6092,15 @@ void md_check_recovery(mddev_t *mddev)
if (mddev_trylock(mddev)) {
int spares = 0;
+ if (mddev->ro) {
+ /* Only thing we do on a ro array is remove
+ * failed devices.
+ */
+ remove_and_add_spares(mddev);
+ clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ goto unlock;
+ }
+
if (!mddev->external) {
int did_change = 0;
spin_lock_irq(&mddev->write_lock);