kernels/linux-libre-aufs_friendly

1 files changed, 40 insertions, 0 deletions

diff --git a/kernels/linux-libre-aufs_friendly/md-raid10-fix-bug-when-activating-a-hot-spare.patch b/kernels/linux-libre-aufs_friendly/md-raid10-fix-bug-when-activating-a-hot-spare.patch
new file mode 100644
index 000000000..880849db5
--- /dev/null
+++ b/kernels/linux-libre-aufs_friendly/md-raid10-fix-bug-when-activating-a-hot-spare.patch
@@ -0,0 +1,40 @@
+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,