From owner-freebsd-stable@FreeBSD.ORG Tue Dec 22 14:19:28 2009 Return-Path: Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D673B106568F for ; Tue, 22 Dec 2009 14:19:28 +0000 (UTC) (envelope-from petefrench@ticketswitch.com) Received: from constantine.ticketswitch.com (constantine.ticketswitch.com [IPv6:2002:57e0:1d4e:1::3]) by mx1.freebsd.org (Postfix) with ESMTP id 9D8008FC26 for ; Tue, 22 Dec 2009 14:19:28 +0000 (UTC) Received: from dilbert.rattatosk ([10.64.50.6] helo=dilbert.ticketswitch.com) by constantine.ticketswitch.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.69 (FreeBSD)) (envelope-from ) id 1NN5aB-000DcB-CV; Tue, 22 Dec 2009 14:19:27 +0000 Received: from petefrench by dilbert.ticketswitch.com with local (Exim 4.70 (FreeBSD)) (envelope-from ) id 1NN5aB-0004Vt-AW; Tue, 22 Dec 2009 14:19:27 +0000 Date: Tue, 22 Dec 2009 14:19:27 +0000 Message-Id: To: flo@smeets.im In-Reply-To: <4B30CE81.7030303@smeets.im> From: Pete French Cc: freebsd-stable@FreeBSD.org Subject: Re: Disc lock up on 8.0-STABLE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Dec 2009 14:19:28 -0000 > i'm trying to track down the same problem. The box in question has > everything on UFS (mirrored ataraid) and a backup disk with ZFS on it > attached to USB. This is very interesting to know! It seems you have managed to get a lot more information out of it than I have. > As the box is remote with only ssh access, it's a little difficult to > debug this. During the weekend i waited till 3 o'clock with a top > running, and saw that hundreds/thousands of /bin/sh processes were > started. After that i commented out periodic daily in /etc/crontab, that > "solved" the problem for me. Interesting - I have tried running the daily periodic processes by hand, but that does not trigger it. Possibly it is something about being run from cron maybe ? > I was not able to debug this any further yet, i have one other box with > all UFS and a ZFS backup disc also running latest 8-STABLE but it does > not exhibit the problem. Same here :-( My other box is identical hardware and almost config (UFS and ZFS) but it works fine. I am not sure that ym debug kernel will help now - assuming this is the same thing as you are seeing, it sounds like a process running amok rather than any kernel bug. Was yoour system a fresh install, or an upgrade from 7-STABLE ? -pete.