From owner-freebsd-sparc64@FreeBSD.ORG Thu Oct 21 02:07:00 2010 Return-Path: Delivered-To: freebsd-sparc64@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BFDA61065693 for ; Thu, 21 Oct 2010 02:07:00 +0000 (UTC) (envelope-from peterjeremy@acm.org) Received: from fallbackmx10.syd.optusnet.com.au (fallbackmx10.syd.optusnet.com.au [211.29.132.251]) by mx1.freebsd.org (Postfix) with ESMTP id 17EA18FC1B for ; Thu, 21 Oct 2010 02:06:58 +0000 (UTC) Received: from mail16.syd.optusnet.com.au (mail16.syd.optusnet.com.au [211.29.132.197]) by fallbackmx10.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id o9KLTTVH027653 for ; Thu, 21 Oct 2010 08:29:29 +1100 Received: from server.vk2pj.dyndns.org (c220-239-116-103.belrs4.nsw.optusnet.com.au [220.239.116.103]) by mail16.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id o9KLTOD5031148 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 21 Oct 2010 08:29:25 +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 (8.14.4/8.14.4) with ESMTP id o9KLTNPq095769; Thu, 21 Oct 2010 08:29:23 +1100 (EST) (envelope-from peter@server.vk2pj.dyndns.org) Received: (from peter@localhost) by server.vk2pj.dyndns.org (8.14.4/8.14.4/Submit) id o9KLTMWe095768; Thu, 21 Oct 2010 08:29:22 +1100 (EST) (envelope-from peter) Date: Thu, 21 Oct 2010 08:29:22 +1100 From: Peter Jeremy To: Craig Butler Message-ID: <20101020212922.GB94244@server.vk2pj.dyndns.org> References: <20101019212043.GA38362@darkthrone.kvedulv.de> <1287568144.2392.10.camel@main.lerwick.hopto.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="GRPZ8SYKNexpdSJ7" Content-Disposition: inline In-Reply-To: <1287568144.2392.10.camel@main.lerwick.hopto.org> X-PGP-Key: http://members.optusnet.com.au/peterjeremy/pubkey.asc User-Agent: Mutt/1.5.20 (2009-06-14) Cc: freebsd-sparc64@freebsd.org Subject: Re: Has anybody been working on zfsboot for sparc64? X-BeenThere: freebsd-sparc64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the Sparc List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Oct 2010 02:07:00 -0000 --GRPZ8SYKNexpdSJ7 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2010-Oct-20 10:49:04 +0100, Craig Butler wr= ote: >You can even gmirror the ufs partition between HDD's > >If the zfs ever messes up, you still have a workable system available >via the ufs partition. I built a system like this (even to the extent of having /usr/src on UFS) for that reason. My experience has been that the gmirrored UFS has caused more data-related problems than ZFS (ZFS has been responsible for more hangs and panics but survives them far better and ZFS in recent 8-stable has fixed those problems). In particular, it looks like I'm losing writes to one of the disks in my gmirror (and they are identical disks, though with different firmware) under some circumstances on shutdown. I'm in the process of rebuilding that system and, based on my experiences with that system and some other ZFS root systems, will be converting it to use ZFS root. --=20 Peter Jeremy --GRPZ8SYKNexpdSJ7 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (FreeBSD) iEYEARECAAYFAky/XzIACgkQ/opHv/APuIc0cACdG3rm/D4Ne87gIzptH0jz5Cfw 2ocAnA/CS2+90GRuA0JaN+KCYJ2i/JRI =+Xj+ -----END PGP SIGNATURE----- --GRPZ8SYKNexpdSJ7--