From owner-freebsd-questions@FreeBSD.ORG Mon Feb 13 19:25:04 2012 Return-Path: <owner-freebsd-questions@FreeBSD.ORG> Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B42DD106564A for <freebsd-questions@freebsd.org>; Mon, 13 Feb 2012 19:25:04 +0000 (UTC) (envelope-from DStaal@usa.net) Received: from mail.magehandbook.com (173-8-4-45-WashingtonDC.hfc.comcastbusiness.net [173.8.4.45]) by mx1.freebsd.org (Postfix) with ESMTP id 849948FC13 for <freebsd-questions@freebsd.org>; Mon, 13 Feb 2012 19:25:03 +0000 (UTC) Received: from www.magehandbook.com (unknown [192.168.1.100]) by mail.magehandbook.com (Postfix) with ESMTP id 3TmxfQ6tB2z90 for <freebsd-questions@freebsd.org>; Mon, 13 Feb 2012 14:25:02 -0500 (EST) Received: from 152.121.16.252 (SquirrelMail authenticated user daniel) by www.magehandbook.com with HTTP; Mon, 13 Feb 2012 14:25:03 -0500 Message-ID: <4a62131a3c6a241b0fdcf3cd9061b6c4.squirrel@www.magehandbook.com> In-Reply-To: <4F393AF8.4060003@bullseye.tv> References: <4F393AF8.4060003@bullseye.tv> Date: Mon, 13 Feb 2012 14:25:03 -0500 From: "Daniel Staal" <DStaal@usa.net> To: freebsd-questions@freebsd.org User-Agent: SquirrelMail/1.4.22 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal Subject: Re: vdevs in zpool spereated, unable to import X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions <freebsd-questions.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions> List-Post: <mailto:freebsd-questions@freebsd.org> List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=subscribe> X-List-Received-Date: Mon, 13 Feb 2012 19:25:04 -0000 On Mon, February 13, 2012 11:31 am, Adam Coates wrote: > More insight into my tomfoolery: I think the "different hostnames" issue > may be because of my ignorance. If you can't tell I'm fairly new to zfs, > and even newer to the revelation of zpools (I've been using one for over > a year but had no idea, I wasn't the one who set it up). When I had > finished the fresh os install I was originally trying to /mount/ the > drives. I know I was running into an error of: > > "/dev/da0 is part of active pool 'tank'" > > with a suggestion that the mount could only proceed with the "-f" > argument. I can't recall what exactly I did, but I may have tried to > force a mount of da0 to /tank in pool "tank". This would make sense why > I now can't import the original pool tank, and why there is a destroyed > pool tank. Since these were raidz, is there any chance of recovering > from my error? You may have done some major damage, but things to try (in my thoughts on order): zpool import -f <id from /dev/da0> That's trying to import by the numeric id, not the name. At the very least, you should get a different error message. (You may need the -D as well.) zpool import -D -f -d /dev/da0 -d /dev/da1 Now we're trying to import destroyed pools, and looking at both drives explicitly for data. The next is a bit of hail mary, and if anyone else has a good idea, I'd try that first...: You can try mounting /dev/da1 like you did /dev/da0, and *then* trying to import. Basically, at that point you are trying to get them both messed up the same way. Since these were raidz: Where's the third disk? If you have two of the raidz disks, you should be able to rebuild the third. (It's *possible*, it appears, to run a raidz with two disks, but you don't get any benefits over mirroring, and you complicate recovery - a mirror in this situation would be directly usable. In theory a two-disk raidz should be recoverable from one disk, I think, but it may not have been well-tested.) Daniel T. Staal --------------------------------------------------------------- This email copyright the author. Unless otherwise noted, you are expressly allowed to retransmit, quote, or otherwise use the contents for non-commercial purposes. This copyright will expire 5 years after the author's death, or in 30 years, whichever is longer, unless such a period is in excess of local copyright law. ---------------------------------------------------------------