From 71d68ff62f945254240575cd836f5f2a09ced5d2 Mon Sep 17 00:00:00 2001

From: NeilBrown <neilb@suse.de>

Date: Wed, 31 Jul 2013 09:18:57 +1000

Subject: [PATCH] Fix is_resync_complete for RAID10

For RAID10, 'sync' numbers go up to the array size rather than the

component size.  is_resync_complete() needs to allow for this.

Reported-by: Pawel Baldysiak <pawel.baldysiak@intel.com>

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

---

 mdmon.h | 20 +++++++++++++++++---

 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/mdmon.h b/mdmon.h

index 60fda38..5a8e120 100644

--- a/mdmon.h

+++ b/mdmon.h

@@ -91,8 +91,22 @@ extern int monitor_loop_cnt;

  */

 static inline int is_resync_complete(struct mdinfo *array)

 {

-	if (array->resync_start >= array->component_size)

-		return 1;

-	return 0;

+	unsigned long long sync_size = 0;

+	int ncopies, l;

+	switch(array->array.level) {

+	case 1:

+	case 4:

+	case 5:

+	case 6:

+		sync_size = array->component_size;

+		break;

+	case 10:

+		l = array->array.layout;

+		ncopies = (l & 0xff) * ((l >> 8) && 0xff);

+		sync_size = array->component_size * array->array.raid_disks;

+		sync_size /= ncopies;

+		break;

+	}

+	return array->resync_start >= sync_size;

 }