Monitor: stop notifing about containers.

Stop reporting any events from container but still track them,
it is important for spare migration.
Stop mdmonitor if no redundant array is presented in mdstat.
There is nothing to follow.

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

1 files changed, 16 insertions, 3 deletions

diff --git a/Monitor.c b/Monitor.c
index 80a3200f..aed7a692 100644
--- a/Monitor.c
+++ b/Monitor.c
@@ -212,15 +212,24 @@ int Monitor(struct mddev_dev *devlist,
 		int new_found = 0;
 		struct state *st, **stp;
 		int anydegraded = 0;
+		int anyredundant = 0;
 
 		if (mdstat)
 			free_mdstat(mdstat);
 		mdstat = mdstat_read(oneshot ? 0 : 1, 0);
 
-		for (st = statelist; st; st = st->next)
+		for (st = statelist; st; st = st->next) {
 			if (check_array(st, mdstat, c->test, &info,
 					increments, c->prefer))
 				anydegraded = 1;
+			/* for external arrays, metadata is filled for
+			 * containers only
+			 */
+			if (st->metadata && st->metadata->ss->external)
+				continue;
+			if (st->err == 0 && !anyredundant)
+				anyredundant = 1;
+		}
 
 		/* now check if there are any new devices found in mdstat */
 		if (c->scan)
@@ -236,6 +245,9 @@ int Monitor(struct mddev_dev *devlist,
 		if (!new_found) {
 			if (oneshot)
 				break;
+			else if (!anyredundant) {
+				break;
+			}
 			else {
 				mdstat_wait(c->delay);
 				mdstat_close();
@@ -542,7 +554,8 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
 		st->err = 0;
 		st->percent = RESYNC_NONE;
 		new_array = 1;
-		alert("NewArray", st->devname, NULL, ainfo);
+		if (!is_container)
+			alert("NewArray", st->devname, NULL, ainfo);
 	}
 
 	if (st->utime == array.utime && st->failed == sra->array.failed_disks &&
@@ -676,7 +689,7 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
 	return retval;
 
  disappeared:
-	if (!st->err)
+	if (!st->err && !is_container)
 		alert("DeviceDisappeared", dev, NULL, ainfo);
 	st->err++;
 	goto out;