From owner-freebsd-stable@FreeBSD.ORG Fri Feb 3 16:57:57 2012 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 F280A106566B; Fri, 3 Feb 2012 16:57:57 +0000 (UTC) (envelope-from max@mxcrypt.com) Received: from mail-vw0-f54.google.com (mail-vw0-f54.google.com [209.85.212.54]) by mx1.freebsd.org (Postfix) with ESMTP id 92D258FC13; Fri, 3 Feb 2012 16:57:57 +0000 (UTC) Received: by vbbfa15 with SMTP id fa15so4168962vbb.13 for ; Fri, 03 Feb 2012 08:57:56 -0800 (PST) Received: by 10.52.88.144 with SMTP id bg16mr3862294vdb.64.1328286572359; Fri, 03 Feb 2012 08:29:32 -0800 (PST) MIME-Version: 1.0 Received: by 10.220.118.144 with HTTP; Fri, 3 Feb 2012 08:29:01 -0800 (PST) In-Reply-To: References: <4F267B14.4060200@ateamsystems.com> <20120130120643.GA46785@icarus.home.lan> From: Maxim Khitrov Date: Fri, 3 Feb 2012 11:29:01 -0500 Message-ID: To: Ivan Voras Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 9 crash/deadlock when dump(8)ing file system with journaling enabled. 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, 03 Feb 2012 16:57:58 -0000 On Mon, Jan 30, 2012 at 9:38 AM, Ivan Voras wrote: > On 30/01/2012 13:06, Jeremy Chadwick wrote: > >>> For now I've turned off journaling (soft updates seem fine) and that >>> works around the issue. >>> >>> Let me know if I can provide more details etc! >> >> >> I'm not sure, but this may be an after-effect of known problems right >> now with SU+J on 9.0. =C2=A0It would help if you could state if you're u= sing >> "dump -L" or not. >> >> I've seen the "deadlock" behaviour you describe on older FreeBSD >> versions (dating back to at least 7.x) when using "dump -L", which >> generates a fs snapshot. =C2=A0Obviously 7.x does not have SU+J, so I'm = a >> little surprised disabling journalling fixes the problem for you. > > > It's a known bug: SU+J currently deadlocks when used with UFS snapshots. Is there any additional information somewhere on when this is expected to be fixed? Seems like a fairly significant problem to me, especially since SU+J is the default when creating new file systems with bsdinstall. - Max