A recent fix which made sure ->degraded was initialised properly
exposed a second bug - ->degraded wasn't been updated when drives
failed or were hot-added.
Signed-off-by: Neil Brown <[email protected]>
### Diffstat output
./drivers/md/multipath.c | 2 ++
1 file changed, 2 insertions(+)
diff .prev/drivers/md/multipath.c ./drivers/md/multipath.c
--- .prev/drivers/md/multipath.c 2006-10-23 16:34:54.000000000 +1000
+++ ./drivers/md/multipath.c 2006-10-23 16:35:38.000000000 +1000
@@ -277,6 +277,7 @@ static void multipath_error (mddev_t *md
set_bit(Faulty, &rdev->flags);
set_bit(MD_CHANGE_DEVS, &mddev->flags);
conf->working_disks--;
+ mddev->degraded++;
printk(KERN_ALERT "multipath: IO failure on %s,"
" disabling IO path. \n Operation continuing"
" on %d IO paths.\n",
@@ -336,6 +337,7 @@ static int multipath_add_disk(mddev_t *m
blk_queue_max_sectors(mddev->queue, PAGE_SIZE>>9);
conf->working_disks++;
+ mddev->degraded--;
rdev->raid_disk = path;
set_bit(In_sync, &rdev->flags);
rcu_assign_pointer(p->rdev, rdev);
-
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