Grow: Frozen array can't be idle

When array is frozen but there is no recovery/reshape in mdstat,
check_idle() will not return error but grow countinue can still working.

Check is array frozen. Do not use sysfs sync_action parameter because it
doesn't exist for Raid0, simply check metadata_version in mdstat.

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/Grow.c b/Grow.c
index 30c5fa91..4436a4d6 100644
--- a/Grow.c
+++ b/Grow.c
@@ -754,7 +754,8 @@ static int check_idle(struct supertype *st)
 	for (e = ent ; e; e = e->next) {
 		if (!is_container_member(e, container))
 			continue;
-		if (e->percent >= 0) {
+		/* frozen array is not idle*/
+		if (e->percent >= 0 || e->metadata_version[9] == '-') {
 			is_idle = 0;
 			break;
 		}