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authorBenjamin Marzinski <bmarzins@redhat.com>2014-08-13 13:53:42 -0500
committerMike Snitzer <snitzer@redhat.com>2014-10-05 20:03:35 -0400
commit1f271972478d84dd9e4d6dd82f414d70ed9e78ce (patch)
treee0dba45e8ca30c73ef29526223f9fd01d2218ab2 /drivers/md/dm-mpath.c
parent3d8aab2d2cca2dc878e396196d07889129440798 (diff)
downloadlinux-1f271972478d84dd9e4d6dd82f414d70ed9e78ce.tar.bz2
dm mpath: stop queueing IO when no valid paths exist
'queue_io' is set so that IO is queued while paths are being initialized. Clear queue_io in __choose_pgpath if there are no valid paths, since there are obviously no paths that can be initialized. Otherwise IOs to the device will back up. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-mpath.c')
-rw-r--r--drivers/md/dm-mpath.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 833d7e752f06..7b6b0f0f831a 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -317,8 +317,10 @@ static void __choose_pgpath(struct multipath *m, size_t nr_bytes)
struct priority_group *pg;
unsigned bypassed = 1;
- if (!m->nr_valid_paths)
+ if (!m->nr_valid_paths) {
+ m->queue_io = 0;
goto failed;
+ }
/* Were we instructed to switch PG? */
if (m->next_pg) {