Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964998AbWE0WOQ (ORCPT ); Sat, 27 May 2006 18:14:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964999AbWE0WOP (ORCPT ); Sat, 27 May 2006 18:14:15 -0400 Received: from mx5.redainternet.nl ([82.98.244.137]:64516 "EHLO mx5.redainternet.nl") by vger.kernel.org with ESMTP id S964998AbWE0WOP (ORCPT ); Sat, 27 May 2006 18:14:15 -0400 Message-ID: <4478CF33.80609@inn.nl> Date: Sun, 28 May 2006 00:14:11 +0200 From: Arend Freije User-Agent: Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.8.0.1) Gecko/20060418 SeaMonkey/1.0 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: RAID-1 and Reiser4 issue: umount hangs Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1610 Lines: 38 Hi, I'm using Reiser4 for my filesystems on disk (/dev/sda) , and it works just fine. Recently I bought a second disk (/dev/sdb) for RAID-1 mirroring. With mdadm I created a degraded raid-1 array on /dev/md/0, devices missing,/dev/sdb1. After that I created a Reiser4 filesystem on /dev/md/0 and mounted it at /mnt. Then I copied the data from /dev/sda1 to /mnt. All goes well until I umount /mnt, umount simply hangs without any error. Syslog doesn't report any error. In /proc/mdstat, the array remains "active sync". Shutting down linux fails because the umount is still waiting and seems to block other umounts. The umount process cannot be killed by the root. A hard reset is the only resolution to get my system functioning normally, but without the raid-1 of course. The problem seems to emerge only with the combination of RAID and Reiser4. I've created an ext-2 filesystem on /dev/md/0, and after that mount ; cp -ax ; umount works without a problem, and the hanging umount re-appears when using Reiser4 again. My questions: - how can I find the cause of the hanging umount? - how can I fix it? A few details of my linux-box: Gentoo Linux, 2.6.16 kernel with Reiser4-for-2.6.16-2.patch.gz i686 AMD Athlon(tm) XP 2400+ DC4300 SATA-II controller (Silicon Image 3124, libata + sata_sil24 drivers) 2 x Samsung SP2504C hard disk Thanx in advance, Arend - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/