Monitor: handle v.quick removal of devices better.

If a device fails and then is removed before Monitor sees
the failure, GET_DISK_INFO returns nothing so Monitor relies
on mdstat info where '_' is incorrectly interpreted as 'a spare'.

We should treat '_' as 'removed' - that is safer.

Without this, a v.quick fail+remove gets reported as 'Failed' then
'SpareActive'.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/Monitor.c b/Monitor.c
index 3f211b5b..c1795663 100644
--- a/Monitor.c
+++ b/Monitor.c
@@ -607,7 +607,7 @@ static int check_array(struct state *st, struct mdstat_ent *mdstat,
 		} else if (mse &&  mse->pattern && i < (int)strlen(mse->pattern)) {
 			switch(mse->pattern[i]) {
 			case 'U': newstate = 6 /* ACTIVE/SYNC */; break;
-			case '_': newstate = 0; break;
+			case '_': newstate = 8 /* REMOVED */; break;
 			}
 			disc.major = disc.minor = 0;
 		}