Re: Suggestion needed for fixing RAID6

[Michael Evans <mjevans1983@gmail.com>]

On Mon, Apr 26, 2010 at 3:39 PM, Janos Haar <janos.haar@netcenter.hu> wrote:
>
> ----- Original Message ----- From: "MRK" <mrk@shiftmail.org>
> To: "Janos Haar" <janos.haar@netcenter.hu>
> Cc: <linux-raid@vger.kernel.org>
> Sent: Monday, April 26, 2010 6:53 PM
> Subject: Re: Suggestion needed for fixing RAID6
>
>
>> On 04/26/2010 02:52 PM, Janos Haar wrote:
>>>
>>> Oops, you are right!
>>> It was my mistake.
>>> Sorry, i will try it again, to support 2 drives with dm-cow.
>>> I will try it.
>>
>> Great! post here the results... the dmesg in particular.
>> The dmesg should contain multiple lines like this "raid5:md3: read error
>> corrected ....."
>> then you know it worked.
>
> md3 : active raid6 sdd4[12] sdl4[11] sdk4[10] sdj4[9] sdi4[8] dm-1[13](F)
> sdg4[6] sdf4[5] dm-0[14](F) sdc4[2] sdb4[1] sda4[0]
>     14626538880 blocks level 6, 16k chunk, algorithm 2 [12/9] [UUU__UU_UUUU]
>     [>....................]  recovery =  1.5% (22903832/1462653888)
> finish=3188383.4min speed=7K/sec
>
> Khm.... :-D
> It is working on something or stopped with 3 missing drive? : ^ )
>
> (I have found the cause of the 2 dm's failure.
> Now retry runs...)
>
> Cheers,
> Janos
>
>
>
>
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What is displayed there seems like it can't be correct.  Please run

mdadm -Evvs

mdadm -Dvvs

and provide the results for us.
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