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authorNeilBrown <neilb@suse.de>2006-10-28 19:38:31 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-28 20:30:51 +0200
commit750a8f3e8f64654a584e54038c2c8db380813c79 (patch)
treed2227e5b694f4ff4ce57ce991213a8c5502f9393 /drivers/md
parent[PATCH] md: simplify checking of available size when resizing an array (diff)
downloadlinux-750a8f3e8f64654a584e54038c2c8db380813c79.tar.xz
linux-750a8f3e8f64654a584e54038c2c8db380813c79.zip
[PATCH] md: fix up maintenance of ->degraded in multipath
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 <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/multipath.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index a6260f0e3b9e..14da37fee37b 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -277,6 +277,7 @@ static void multipath_error (mddev_t *mddev, mdk_rdev_t *rdev)
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 *mddev, mdk_rdev_t *rdev)
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);