From owner-freebsd-stable@FreeBSD.ORG Fri Nov 5 22:33:36 2010 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 3E03C106564A for ; Fri, 5 Nov 2010 22:33:36 +0000 (UTC) (envelope-from ras@gerbil.cluepon.net) Received: from gerbil.cluepon.net (cluepon.net [204.93.176.74]) by mx1.freebsd.org (Postfix) with ESMTP id 0F6DC8FC16 for ; Fri, 5 Nov 2010 22:33:35 +0000 (UTC) Received: from gerbil.cluepon.net (ras@localhost [127.0.0.1]) by gerbil.cluepon.net (8.14.4/8.14.4) with ESMTP id oA5MGjgo026420; Fri, 5 Nov 2010 17:16:45 -0500 (CDT) (envelope-from ras@gerbil.cluepon.net) Received: (from ras@localhost) by gerbil.cluepon.net (8.14.4/8.14.4/Submit) id oA5MGjMR026419; Fri, 5 Nov 2010 17:16:45 -0500 (CDT) (envelope-from ras) Date: Fri, 5 Nov 2010 17:16:45 -0500 From: Richard A Steenbergen To: Josh Carroll Message-ID: <20101105221645.GE1902@gerbil.cluepon.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Cc: rmacklem@uoguelph.ca, freebsd-stable@freebsd.org Subject: Re: NFS deadlock (unkillable nfsd and no mounts work) 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: Fri, 05 Nov 2010 22:33:36 -0000 On Thu, Nov 04, 2010 at 10:35:15PM -0700, Josh Carroll wrote: > Greetings! > > I'm having a problem with nfsd hanging and not serving mount points, > during which time it can not not be killed. This problem started > happening sometime after November 2nd, since kernel from 11/2 sources > does not exhibit this problem. I had a similar issue on -current a few weeks ago, with processes that would lock up and become unkillable when they tried to access certain parts of the filesystem (running all zfs here). One time it managed to lock up every time you'd do an ls /, but a reboot would always clear it, then a few days later it would pop up again somewhere else. I never lost any data, zfs never found anything wrong, and the drives and hw all checked out. I sync'd up with the latest -current on oct 18th and it stopped happening (or maybe I just stopped noticing it, entirely possible for a very lightly used personal box), plus I was traveling and super busy at the time, so I didn't bother pursuing it further. -- Richard A Steenbergen http://www.e-gerbil.net/ras GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)