This patch rejects messages that can generate I/O while the device itself
is suspended.
Signed-off-by: Kiyoshi Ueda <k-ueda@xxxxxxxxxxxxx>
Signed-off-by: Jun'ichi Nomura <j-nomura@xxxxxxxxxxxxx>
Cc: Mike Anderson <andmike@xxxxxxxxxxxxxxxxxx>
Cc: Alasdair G Kergon <agk@xxxxxxxxxx>
---
drivers/md/dm-mpath.c | 5 +++++
1 file changed, 5 insertions(+)
Index: 2.6.32-rc7/drivers/md/dm-mpath.c
===================================================================
--- 2.6.32-rc7.orig/drivers/md/dm-mpath.c
+++ 2.6.32-rc7/drivers/md/dm-mpath.c
@@ -1421,6 +1421,11 @@ static int multipath_message(struct dm_t
mutex_lock(&m->work_mutex);
+ if (dm_suspended(ti)) {
+ r = -EBUSY;
+ goto out;
+ }
+
if (argc == 1) {
if (!strnicmp(argv[0], MESG_STR("queue_if_no_path"))) {
r = queue_if_no_path(m, 1, 0);
--
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