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authorNeilBrown <neilb@suse.de>2011-07-28 11:31:47 +1000
committerNeilBrown <neilb@suse.de>2011-07-28 11:31:47 +1000
commit34b343cff4354ab9864be83be88405fd53d928a0 (patch)
tree10d75ecac6091f955cbb8a60b79f443355ca4ea8 /drivers/md/raid10.c
parent6e0d2d0312fb20c1edac1b2c849068c1c7944abf (diff)
md: don't allow arrays to contain devices with bad blocks.
As no personality understand bad block lists yet, we must reject any device that is known to contain bad blocks. As the personalities get taught, these tests can be removed. This only applies to raid1/raid5/raid10. For linear/raid0/multipath/faulty the whole concept of bad blocks doesn't mean anything so there is no point adding the checks. Signed-off-by: NeilBrown <neilb@suse.de> Reviewed-by: Namhyung Kim <namhyung@gmail.com>
Diffstat (limited to 'drivers/md/raid10.c')
-rw-r--r--drivers/md/raid10.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 5def27c28be..8aadd2f52dc 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1101,6 +1101,9 @@ static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
int first = 0;
int last = conf->raid_disks - 1;
+ if (rdev->badblocks.count)
+ return -EINVAL;
+
if (mddev->recovery_cp < MaxSector)
/* only hot-add to in-sync arrays, as recovery is
* very different from resync
@@ -2263,6 +2266,11 @@ static int run(mddev_t *mddev)
(conf->raid_disks / conf->near_copies));
list_for_each_entry(rdev, &mddev->disks, same_set) {
+
+ if (rdev->badblocks.count) {
+ printk(KERN_ERR "md/raid10: cannot handle bad blocks yet\n");
+ goto out_free_conf;
+ }
disk_idx = rdev->raid_disk;
if (disk_idx >= conf->raid_disks
|| disk_idx < 0)