From owner-freebsd-fs@FreeBSD.ORG Thu Oct 29 21:52:54 2009 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 0E5691065679 for ; Thu, 29 Oct 2009 21:52:54 +0000 (UTC) (envelope-from stef-list@memberwebs.com) Received: from memberwebs.com (memberwebs.com [94.75.203.95]) by mx1.freebsd.org (Postfix) with ESMTP id CC1B58FC0A for ; Thu, 29 Oct 2009 21:52:53 +0000 (UTC) Received: from [172.27.5.159] (unknown [172.27.5.159]) by memberwebs.com (Postfix) with ESMTP id 7990A83E4AD; Thu, 29 Oct 2009 21:52:51 +0000 (UTC) Message-ID: <4AEA0EAD.1050302@memberwebs.com> Date: Thu, 29 Oct 2009 15:52:45 -0600 From: Stef Walter User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: Borja Marcos References: <804B79F6-27CE-40D2-8AB8-6FC378F448FA@sarenet.es> In-Reply-To: <804B79F6-27CE-40D2-8AB8-6FC378F448FA@sarenet.es> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org Subject: Re: 8.0-RC2: ZFS deadlock with zfs receive X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: stef@memberwebs.com List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Oct 2009 21:52:54 -0000 Borja Marcos wrote: > I've been sending some alltraces to pjd about this easy to reproduce > problem. I am using zfs send/zfs receive to replicate a dataset from one > server to another. At 1 minute intervals, an incremental snapshot is > sent to update the dataset copy. If there is reading activity on the > dataset copy, a deadlock can happen rendering ZFS and all the FS > subsystem unusable. I've tried with 8.0RC2 and it still happens. FWIW, another (or the same) zfs recv deadlock I've been trying to get to the bottom of: http://lists.freebsd.org/pipermail/freebsd-fs/2009-October/006999.html Cheers, Stef