From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-bk0-f42.google.com ([209.85.214.42]:42289 "EHLO mail-bk0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751173Ab3GJLyh (ORCPT ); Wed, 10 Jul 2013 07:54:37 -0400 Received: by mail-bk0-f42.google.com with SMTP id jk13so2817629bkc.1 for ; Wed, 10 Jul 2013 04:54:35 -0700 (PDT) From: Ilya Dryomov To: linux-btrfs@vger.kernel.org Cc: Chris Mason , idryomov@gmail.com, Stefan Behrens Subject: [PATCH] Btrfs: num_tolerated_disk_barrier_failures is incorrect for RAID6 Date: Wed, 10 Jul 2013 14:54:30 +0300 Message-Id: <1373457270-18909-1-git-send-email-idryomov@gmail.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: Currently num_tolerated_disk_barrier_failures gets the value of fs_devices->num_devices in the RAID6 case. But, RAID6 can tolerate only two simultaneous failures, so set it to 2. CC: Stefan Behrens Signed-off-by: Ilya Dryomov --- fs/btrfs/disk-io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index b8b60b6..aecf788 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3258,7 +3258,7 @@ int btrfs_calc_num_tolerated_disk_barrier_failures( BTRFS_BLOCK_GROUP_RAID10)) { num_tolerated_disk_barrier_failures = 1; } else if (flags & - BTRFS_BLOCK_GROUP_RAID5) { + BTRFS_BLOCK_GROUP_RAID6) { num_tolerated_disk_barrier_failures = 2; } } -- 1.7.10.4