41 lines
1.2 KiB
Diff
41 lines
1.2 KiB
Diff
From 7fcc7c8acf0fba44d19a713207af7e58267c1179 Mon Sep 17 00:00:00 2001
|
|
From: NeilBrown <neilb@suse.de>
|
|
Date: Mon, 31 Oct 2011 12:59:44 +1100
|
|
Subject: md/raid10: Fix bug when activating a hot-spare.
|
|
|
|
From: NeilBrown <neilb@suse.de>
|
|
|
|
commit 7fcc7c8acf0fba44d19a713207af7e58267c1179 upstream.
|
|
|
|
This is a fairly serious bug in RAID10.
|
|
|
|
When a RAID10 array is degraded and a hot-spare is activated, the
|
|
spare does not take up the empty slot, but rather replaces the first
|
|
working device.
|
|
This is likely to make the array non-functional. It would normally
|
|
be possible to recover the data, but that would need care and is not
|
|
guaranteed.
|
|
|
|
This bug was introduced in commit
|
|
2bb77736ae5dca0a189829fbb7379d43364a9dac
|
|
which first appeared in 3.1.
|
|
|
|
Signed-off-by: NeilBrown <neilb@suse.de>
|
|
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
|
|
|
---
|
|
drivers/md/raid10.c | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
--- a/drivers/md/raid10.c
|
|
+++ b/drivers/md/raid10.c
|
|
@@ -1337,7 +1337,7 @@ static int raid10_add_disk(mddev_t *mdde
|
|
mirror_info_t *p = &conf->mirrors[mirror];
|
|
if (p->recovery_disabled == mddev->recovery_disabled)
|
|
continue;
|
|
- if (!p->rdev)
|
|
+ if (p->rdev)
|
|
continue;
|
|
|
|
disk_stack_limits(mddev->gendisk, rdev->bdev,
|