From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Wojcik Subject: [PATCH] FIX: Cleanup after raid45->raid0 takeover Date: Mon, 28 Mar 2011 15:31:57 +0200 Message-ID: <20110328133156.10923.98647.stgit@gklab-128-111.igk.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: neilb@suse.de Cc: linux-raid@vger.kernel.org, wojciech.neubauer@intel.com, adam.kwolek@intel.com, dan.j.williams@intel.com, ed.ciechanowski@intel.com List-Id: linux-raid.ids Problem: After raid4->raid0 takeover operation, another takeover operation (e.g raid0->raid10) results "kernel oops". Root cause: Variables 'degraded' and 'plug' in mddev structure are not cleared after raid45->raid0 takeover. This patch reset these variables. Signed-off-by: Krzysztof Wojcik --- drivers/md/raid0.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index c0ac457..5d47113 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -603,6 +603,8 @@ static void *raid0_takeover_raid45(mddev_t *mddev) mddev->new_chunk_sectors = mddev->chunk_sectors; mddev->raid_disks--; mddev->delta_disks = -1; + mddev->degraded = 0; + mddev->plug = NULL; /* make sure it will be not marked as dirty */ mddev->recovery_cp = MaxSector;