From owner-freebsd-stable@FreeBSD.ORG Wed Oct 15 08:58:47 2008 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 9AC8E1065688; Wed, 15 Oct 2008 08:58:47 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from mail13.syd.optusnet.com.au (mail13.syd.optusnet.com.au [211.29.132.194]) by mx1.freebsd.org (Postfix) with ESMTP id 1B4F28FC08; Wed, 15 Oct 2008 08:58:46 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from server.vk2pj.dyndns.org (c122-106-215-175.belrs3.nsw.optusnet.com.au [122.106.215.175]) by mail13.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id m9F8wihi023829 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 15 Oct 2008 19:58:45 +1100 X-Bogosity: Ham, spamicity=0.000000 Received: from server.vk2pj.dyndns.org (localhost.vk2pj.dyndns.org [127.0.0.1]) by server.vk2pj.dyndns.org (8.14.2/8.14.2) with ESMTP id m9F8wi1O093397; Wed, 15 Oct 2008 19:58:44 +1100 (EST) (envelope-from peter@server.vk2pj.dyndns.org) Received: (from peter@localhost) by server.vk2pj.dyndns.org (8.14.2/8.14.2/Submit) id m9F8whOt093396; Wed, 15 Oct 2008 19:58:43 +1100 (EST) (envelope-from peter) Date: Wed, 15 Oct 2008 19:58:43 +1100 From: Peter Jeremy To: Jeremy Chadwick Message-ID: <20081015085843.GF26536@server.vk2pj.dyndns.org> References: <20081015082428.GE26536@server.vk2pj.dyndns.org> <20081015083538.GA72190@icarus.home.lan> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="IU5/I01NYhRvwH70" Content-Disposition: inline In-Reply-To: <20081015083538.GA72190@icarus.home.lan> X-PGP-Key: http://members.optusnet.com.au/peterjeremy/pubkey.asc User-Agent: Mutt/1.5.18 (2008-05-17) Cc: freebsd-stable@FreeBSD.org Subject: Re: System hanging during dump 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: Wed, 15 Oct 2008 08:58:47 -0000 --IU5/I01NYhRvwH70 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2008-Oct-15 01:35:38 -0700, Jeremy Chadwick wrote: >On Wed, Oct 15, 2008 at 07:24:28PM +1100, Peter Jeremy wrote: >> Last night, I attempted a full, compressed backup of my 181GB /home >> (on a PATA disk) to a remote system. The backup started at 2159 and >> everything appeared normal until about 0040 when the system became >> non-responsive and this lasted until the dump completed at 1033. This >> is the first full backup of /home I've made for several years (due to >> lack of space). =2E.. >It's a known problem documented in my Wiki -- see "dump/restore". Note >the part about UFS2 snapshot generation. I'm almost certain this is >what you're describing. No, my problem is not mentioned in your Wiki. You mention: * dump process frequently hangs In my case, the dump was progressing normally. The _rest_ of the system was hung. * UFS2 snapshot generation (mksnap_ffs, dump -L) takes too long; system is = unusable during this time In my case, snapshot creation took ~4 minutes. The system was running normally for 2.6 hours after snapshot creation completed before it froze. * Filesystems not cleanly shut down if reboot performed while dump(8) still= running Not applicable. --=20 Peter Jeremy Please excuse any delays as the result of my ISP's inability to implement an MTA that is either RFC2821-compliant or matches their claimed behaviour. --IU5/I01NYhRvwH70 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEARECAAYFAkj1sMMACgkQ/opHv/APuIe6cwCeJdYvfpQdOzTdQQNB2g+ioKk+ JtgAn050P0w/T2iWYh11Q0AppKtOY4+3 =LmFS -----END PGP SIGNATURE----- --IU5/I01NYhRvwH70--