From owner-freebsd-questions@FreeBSD.ORG Tue Sep 27 22:24:30 2011 Return-Path: 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 161951065672 for ; Tue, 27 Sep 2011 22:24:30 +0000 (UTC) (envelope-from four.harrisons@googlemail.com) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id 8E0248FC1B for ; Tue, 27 Sep 2011 22:24:29 +0000 (UTC) Received: by fxg9 with SMTP id 9so9914115fxg.13 for ; Tue, 27 Sep 2011 15:24:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=Gf/R9fIqLcS97zwmfgeWEvKBA99JAT+O438TVMbs9ho=; b=Qi758X9HwQlu18ytZHhwz6NXxrmEFpvv4XJbjpE0gvS0sB7o/UKLD5Ic0WsmUjz5ON UIUfpYCa9l3W/KV12V323wHBHXSHodUnpg0PgYz22shD4u/HWwJ4rZyK0K70aNtmSnOa YQFoYIuJ8hgySMjbogR2/aMAEJ1zG9uT3wQiM= MIME-Version: 1.0 Received: by 10.223.29.203 with SMTP id r11mr555390fac.10.1317160928847; Tue, 27 Sep 2011 15:02:08 -0700 (PDT) Received: by 10.223.61.9 with HTTP; Tue, 27 Sep 2011 15:02:08 -0700 (PDT) In-Reply-To: <4E824719.8090102@gmail.com> References: <4E824719.8090102@gmail.com> Date: Tue, 27 Sep 2011 23:02:08 +0100 Message-ID: From: peter harrison To: Johan Hendriks Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-questions@freebsd.org Subject: Re: GEOM_MIRROR GPT table corrupt or invalid X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Sep 2011 22:24:30 -0000 On 27 September 2011 22:58, Johan Hendriks wrote: > peter harrison schreef: > > Hello list, >> >> I have a problem with a software RAID1. This was created under Freenas >> 0.7.2 >> (using the web interface - FreeBSD 7.3 under the hood) which as I >> understand >> it uses GPT and GEOM_MIRROR. This Freenas is running on AMD64 on an ESXi >> 4.1 >> host with the 2 drives for the mirror passed through as raw disks to the >> Freenas guest - if that makes a difference. >> >> This mirror now fails to mount on boot. Checking the boot messages I see >> this straight after the drives are detected: >> >> GEOM: da1: the secondary GPT table is corrupt or invalid. >> GEOM: da1: using the primary only -- recovery suggested >> >> Further on I see: >> >> GEOM_MIRROR: Force device data start due to timeout >> GEOM_MIRROR: Device mirror/data launched (1/2) >> >> The mirror is not mounted when booting is completed - no further messages >> during boot - mount says: >> >> freenas:~# mount >> /dev/da0s1a on / (ufs, local, soft-updates) >> devfs on /dev (devfs, local) >> procfs on /proc (procfs, local) >> >> When I try to mount it manually I get a continually scrolling g_vfs error: >> >> g_vfs_done():mirror/datap1[**READ(offset=-**636932692096956416, length >> =16384)] >> error = 5 >> >> and the guest becomes unresponsive. >> >> GEOM isn't something I'm really familiar with - so any insight on how this >> happened would be interesting. But the main question is, is there anyway >> of >> getting the data off this disk? (I have some backups, but they're not >> complete). >> >> Thanks for any help. >> >> >> >> Peter Harrison. >> >> You can not use gmirror and GPT at the same time on the whole disk. > > Both use the same diskspace to write there meta data. > What you can do is to mirror the partitions seperately. > A nice howto you can find here > http://www.unix-heaven.org/**node/20 > Thanks Johan, I'll check the link out. This mirror has been running OK for the last 6 months - so perhaps I misunderstood how FreeNAS set it up in the first place? > > You can recover the GPT, but then the mirror can not load. > if you recreate the mirror after that, the gpt label gets corrupt. > No hope of being able to recover any data then? Thanks again, Peter Harrison. > > > regards, > Johan > >