From: Chris Mason <chris.mason@oracle.com>
To: Malwina Bartoszynska <m.bartoszynska@rootbox.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: "btrfs: open_ctree failed" error
Date: Wed, 21 Dec 2011 14:06:05 -0500 [thread overview]
Message-ID: <20111221190605.GY19266@shiny> (raw)
In-Reply-To: <loom.20111221T141346-863@post.gmane.org>
On Wed, Dec 21, 2011 at 01:54:06PM +0000, Malwina Bartoszynska wrote:
> Hello,
> after unmounting btrfs partition, I can't mount it again.
>
> root@xxx:~# btrfs device scan
> Scanning for Btrfs filesystems
> root@xxx:~# mount /dev/sdb /data/osd.0/
> mount: wrong fs type, bad option, bad superblock on /dev/sdb,
> missing codepage or helper program, or other error
> In some cases useful info is found in syslog - try
> dmesg | tail or so
>
> root@xxxx:~# dmesg|tail
> [57192.607912] device fsid ed25c604-3e11-4459-85b5-e4090c4d22d0 devid
> 2 transid14429 /dev/sda
> [57204.796573] end_request: I/O error, dev fd0, sector 0
> [57231.660913] device fsid ed25c604-3e11-4459-85b5-e4090c4d22d0 devid 1
> transid 14429 /dev/sdb
> [57231.680387] parent transid verify failed on 424308420608 wanted 6970
> found 8959
> [57231.680546] parent transid verify failed on 424308420608 wanted 6970
> found 8959
> [57231.680705] parent transid verify failed on 424308420608 wanted 6970
> found 8959
> [57231.680861] parent transid verify failed on 424308420608 wanted 6970
> found 8959
> [57231.680869] parent transid verify failed on 424308420608 wanted 6970
> found 8959
> [57231.680875] Failed to read block groups: -5
> [57231.704165] btrfs: open_ctree failed
Can you tell us more about this filesystem? Was there an unclean
shutdown or did you just unmount, mount again?
The confusing thing is that all of your disks seem to have the same copy
of the block, so it looks like things were written properly.
-chris
next prev parent reply other threads:[~2011-12-21 19:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-21 13:54 "btrfs: open_ctree failed" error Malwina Bartoszynska
2011-12-21 19:06 ` Chris Mason [this message]
2011-12-22 9:43 ` Malwina Bartoszynska
2012-01-31 15:53 ` Max
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