From owner-freebsd-fs@FreeBSD.ORG Mon Oct 11 15:46:50 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C7F1C1065670 for ; Mon, 11 Oct 2010 15:46:50 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from QMTA11.westchester.pa.mail.comcast.net (qmta11.westchester.pa.mail.comcast.net [76.96.59.211]) by mx1.freebsd.org (Postfix) with ESMTP id 70CA68FC1B for ; Mon, 11 Oct 2010 15:46:49 +0000 (UTC) Received: from omta15.westchester.pa.mail.comcast.net ([76.96.62.87]) by QMTA11.westchester.pa.mail.comcast.net with comcast id HNhl1f0011swQuc5BTmqXb; Mon, 11 Oct 2010 15:46:50 +0000 Received: from koitsu.dyndns.org ([98.248.41.155]) by omta15.westchester.pa.mail.comcast.net with comcast id HTmp1f0033LrwQ23bTmpxj; Mon, 11 Oct 2010 15:46:50 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id CCDB29B418; Mon, 11 Oct 2010 08:46:47 -0700 (PDT) Date: Mon, 11 Oct 2010 08:46:47 -0700 From: Jeremy Chadwick To: "Sam Fourman Jr." Message-ID: <20101011154647.GA11532@icarus.home.lan> References: <39F05641-4E46-4BE0-81CA-4DEB175A5FBE@free.de> <20101009111241.GA58948@icarus.home.lan> <4CB17983.3020907@icyb.net.ua> <20101011151508.GA10917@icarus.home.lan> <4CB32C75.2060000@icyb.net.ua> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd-fs@freebsd.org, Andriy Gapon Subject: Re: Locked up processes after upgrade to ZFS v15 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Oct 2010 15:46:50 -0000 On Mon, Oct 11, 2010 at 10:40:11AM -0500, Sam Fourman Jr. wrote: > > Jeremy, > > > > were are in a process of debugging this issue with Kai and I think that we are > > onto something.  I would like to ask you for some additional testing. > > > > What kind of workload do your run? > > Do you have anything using sendfile(2)?  E.g. Apache with EnableSendfile enabled > > (it might be by default, without explicit options). > > Can you try to disable sendfile(2) use, reboot and see how system behaves? > > > > If you still experience the same problem after doing the above, then I'd like to > > ask you for shell access with root privileges; or establishing communication via > > IM and running some commands for me. > > > > Thank you! > > -- > > Andriy Gapon > > _______________________________________________ > > > Andriy, > > I am not sure if this is the same issue, but > I have a similar problem running FreeBSD 9-CURRENT amd64 (sources as > of 1 hour ago) > a zfs lockup appears very frequently, it is a NFS server it locks up > several times per day. > > I have been having these issues since before the ZFSv15 patch was > committed to HEAD a few months ago. > let me know if you need details, I have no problems giving you root > ssh on this machine... but it does not have a serial port. > so I am not sure how useful it would be. Are the processes which livelock (get stuck and cannot be killed, even with kill -9) stuck in states "zfs" or "zfsmrb"? You can check with "ps -axl" or top. If so, it's probably the same problem. If not, it may be a different problem. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |