Re: [2.6.38-rc6] create->rebalance->mount crash...

[Daniel J Blueman <daniel.blueman@gmail.com>]

On 24 February 2011 20:48, liubo <liubo2009@cn.fujitsu.com> wrote:
> On 02/24/2011 04:13 PM, Daniel J Blueman wrote:
>> When creating a filesystem (single or redundant) with BTRFS and
>> subsequently executing a balance [1], we see a kernel oops at the ne=
xt
>> mount [2].
>>
>
> Hi, Daniel,
>
> After digging this, I've come up with a patch on this, would you plea=
se test
> it on your box? =A0Hopes that this is helpful, Thanks.
>
> From: Liu Bo <liubo2009@cn.fujitsu.com>
>
> [PATCH] btrfs: fix OOPS of empty filesystem after balance
>
> btrfs will exclude unused block groups via a thread.
> When a empty filesystem is balanced, the block group with tag "DATA" =
may be dropped,
> and after umount, this will lead to OOPS when we mount it again.

[snip]

Thanks, Bo; the patch addresses the oops.

Daniel

Reported-by: Daniel J Blueman <daniel.blueman@gmail.com>
Tested-by: Daniel J Blueman <daniel.blueman@gmail.com>
--=20
Daniel J Blueman
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