Re: BUG at drivers/md/kcopyd.c:146

[Juergen Kreileder <jk@blackdown.de>]

Juergen Kreileder <jk@blackdown.de> writes:

> Andrew Morton <akpm@osdl.org> writes:
>
>> (restored Juergen's cc)
>
> [The cc list was correct actually, I had set a Mail-Followup-To
> header.]
>
>> Alasdair G Kergon <agk@redhat.com> wrote:
>>>
>>> On Sat, Apr 15, 2006 at 01:19:51PM +0200, Juergen Kreileder wrote:
>
> [...]
>
>>> I found several bugs in the snapshot code when I reviewed it,
>>> including (thankfully hard-to-trigger) silent data corruption.
>>>
>>> Patches went into 2.6.17-rc1.  [There's one unfinished patch
>>> outstanding for a theoretical race that I've only been able to
>>> reproduce under artificial conditions.]
>>>
>>>> kernel BUG at drivers/md/kcopyd.c:146!
>>>
>>> Probably needs this patch (12th March):
>>>
>>> dm snapshot: fix kcopyd destructor
>>>
>>
>> Thanks, I've appended a copy here.
>>
>> Juergen, can you please test this?
>
> Works fine so far but it's too early to call it fixed.
> I'll let it run over the weekend and report back.

I've seen no problems, snapshots seem to work fine with the patch.



        Juergen

-- 
Juergen Kreileder, Blackdown Java-Linux Team
http://blog.blackdown.de/