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authorKiyoshi Ueda <k-ueda@ct.jp.nec.com>2009-12-11 02:52:27 +0300
committerAlasdair G Kergon <agk@redhat.com>2009-12-11 02:52:27 +0300
commitc2f3d24b783fda20618b73d65678eb5dfae31a5d (patch)
tree0c5f266885460a4829c1f7c2083cd66004bd1ec2 /drivers/md/dm-mpath.c
parent64dbce580d5a7e89e8de20b91f80c7267cdad91d (diff)
downloadlinux-c2f3d24b783fda20618b73d65678eb5dfae31a5d.tar.xz
dm mpath: reject messages when device is suspended
This patch rejects messages that can generate I/O while the device itself is suspended. Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Cc: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-mpath.c')
-rw-r--r--drivers/md/dm-mpath.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 45d9bf14cc48..e81345a1d08f 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -1433,6 +1433,11 @@ static int multipath_message(struct dm_target *ti, unsigned argc, char **argv)
goto out;
}
+ 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);