From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Tokarev Subject: Re: 2.6.23.1: mdadm/raid5 hung/d-state Date: Sun, 04 Nov 2007 17:55:52 +0300 Message-ID: <472DDD78.7040002@msgid.tls.msk.ru> References: <472DBF8C.2060508@msgid.tls.msk.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Justin Piszcz Cc: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, xfs@oss.sgi.com List-Id: linux-raid.ids Justin Piszcz wrote: > On Sun, 4 Nov 2007, Michael Tokarev wrote: [] >> The next time you come across something like that, do a SysRq-T dump and >> post that. It shows a stack trace of all processes - and in particular, >> where exactly each task is stuck. > Yes I got it before I rebooted, ran that and then dmesg > file. > > Here it is: > > [1172609.665902] ffffffff80747dc0 ffffffff80747dc0 ffffffff80747dc0 ffffffff80744d80 > [1172609.668768] ffffffff80747dc0 ffff81015c3aa918 ffff810091c899b4 ffff810091c899a8 That's only partial list. All the kernel threads - which are most important in this context - aren't shown. You ran out of dmesg buffer, and the most interesting entries was at the beginning. If your /var/log partition is working, the stuff should be in /var/log/kern.log or equivalent. If it's not working, there is a way to capture the info still, by stopping syslogd, cat'ing /proc/kmsg to some tmpfs file and scp'ing it elsewhere. /mjt