Commit fd467696 authored Jun 09, 2015 by Mike Snitzer

dm thin: fail messages with EOPNOTSUPP when pool cannot handle messages



Use EOPNOTSUPP, rather than EINVAL, error code when user attempts to
send the pool a message.  Otherwise usespace is led to believe the
message failed due to invalid argument.

Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

parent 34fbcf62

drivers/md/dm-thin.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -3656,7 +3656,7 @@ static int pool_message(struct dm_target ti, unsigned argc, char *argv)
		if (get_pool_mode(pool) >= PM_READ_ONLY) {
		DMERR("%s: unable to service pool target messages in READ_ONLY or FAIL mode",
		dm_device_name(pool->pool_md));
		return -EINVAL;
		return -EOPNOTSUPP;
		}

		if (!strcasecmp(argv[0], "create_thin"))