From: NeilBrown <neilb@suse.de>
Date: Wed, 15 Jun 2011 02:21:26 +0000 (+1000)
Subject: Incr: fix breakage in count_active.
X-Git-Tag: mdadm-3.2.2~13
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=47c7a4be1436a8cae2fefc05bb227712d8b6f4ec;p=thirdparty%2Fmdadm.git

Incr: fix breakage in count_active.

If the second device is much newer than the first, but has a lower
raid_disk number, we clear 'avail' badly and don't set up
'best' properly.

Fix these things.

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

diff --git a/Incremental.c b/Incremental.c
index f576cbae..aa98d06b 100644
--- a/Incremental.c
+++ b/Incremental.c
@@ -776,9 +776,10 @@ static int count_active(struct supertype *st, struct mdinfo *sra,
 				best[info.disk.raid_disk] = devnum;
 				st->ss->getinfo_super(st, bestinfo, NULL);
 			} else { /* info.events much bigger */
-				memset(avail, 0, info.disk.raid_disk);
+				memset(avail, 0, raid_disks);
 				max_events = info.events;
 				avail[info.disk.raid_disk] = 2;
+				best[info.disk.raid_disk] = devnum;
 				st->ss->getinfo_super(st, bestinfo, NULL);
 			}
 		}