mdadm/0008-mdmon-don-t-attempt-to-manage-new-arrays-when-termin.patch

From 195b937685f1076d9e418d01b77e3274dffb29dc Mon Sep 17 00:00:00 2001
From: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Date: Fri, 22 Feb 2019 10:15:45 +0100
Subject: [PATCH 08/27] mdmon: don't attempt to manage new arrays when
 terminating

When mdmon gets a SIGTERM, it stops managing arrays that are clean. If
there is more that one array in the container and one of them is dirty
and the clean one is still present in mdstat, mdmon will treat it as a
new array and start managing it again. This leads to a cycle of
remove_old() / manage_new() calls for the clean array, until the other
one also becomes clean.

Prevent this by not calling manage_new() if sigterm is set. Also, remove
a check for sigterm in manage_new() because the condition will never be
true.

Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
---
 managemon.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/managemon.c b/managemon.c
index 101231c..29b91ba 100644
--- a/managemon.c
+++ b/managemon.c
@@ -727,9 +727,7 @@ static void manage_new(struct mdstat_ent *mdstat,
 	dprintf("inst: %s action: %d state: %d\n", inst,
 		new->action_fd, new->info.state_fd);
 
-	if (sigterm)
-		new->info.safe_mode_delay = 1;
-	else if (mdi->safe_mode_delay >= 50)
+	if (mdi->safe_mode_delay >= 50)
 		/* Normal start, mdadm set this. */
 		new->info.safe_mode_delay = mdi->safe_mode_delay;
 	else
@@ -803,7 +801,7 @@ void manage(struct mdstat_ent *mdstat, struct supertype *container)
 				break;
 			}
 		}
-		if (a == NULL || !a->container)
+		if ((a == NULL || !a->container) && !sigterm)
 			manage_new(mdstat, container, a);
 	}
 }
-- 
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