From: Nageswara R Sastry <rnsastry@linux.vnet.ibm.com>
To: Liu Bo <liubo2009@cn.fujitsu.com>
Cc: linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org,
chris.mason@oracle.com, kamalesh@linux.vnet.ibm.com
Subject: Re: [BUG] Kernel Bug at fs/btrfs/volumes.c:3638
Date: Mon, 27 Feb 2012 11:26:28 +0530 [thread overview]
Message-ID: <4F4B1B0C.4040100@linux.vnet.ibm.com> (raw)
In-Reply-To: <4F487BB5.1060706@cn.fujitsu.com>
On ఫిబ్రవరి 25 శనివారం 2012 ఉ. 11:42, Liu Bo wrote:
> Hi, I guess you're mounting a quite small partition. Given that this
> oops is in such an early stage, could you please show 1) your
> mkfs.btrfs options and 2) the log of "btrfs-debug-tree /dev/loop0"?
> thanks, liubo
Here are the steps with options,
1. dd if=/dev/zero of=<filename.img> bs=1M count=16
2. mkfs.btrfs <filename.img>
3. Corrupt the <filename.img> using 'mangle'
4. mount -t btrfs -o loop <filename.img> <mount point>
5. # btrfs-debug-tree <filename.img>
Couldn't map the block 3221392384
Couldn't read chunk root
unable to open <filename.img>
# btrfs-debug-tree /dev/loop0
Couldn't map the block 3221392384
Couldn't read chunk root
unable to open /dev/loop0
Regards,
R.Nageswara Sastry
next prev parent reply other threads:[~2012-02-27 5:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-24 10:41 [BUG] Kernel Bug at fs/btrfs/volumes.c:3638 Nageswara R Sastry
2012-02-25 6:12 ` Liu Bo
2012-02-27 5:56 ` Nageswara R Sastry [this message]
2012-02-27 4:42 ` Jérôme Carretero
2012-02-27 14:52 ` David Sterba
2012-03-01 0:27 ` David Sterba
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