Re: Possible to rescue SW Raid5 with 2 missing Disks

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On Thu, Feb 14, 2013 at 12:09 PM, Mikael Abrahamsson <swmike@xxxxxxxxx> wrote:
> On Thu, 14 Feb 2013, Dragon wrote:
>
>> no i dindnt have a old version of examin from before ;(
>

Are the 2 disks completely failed? Or just dropped from the array?
Can you provide mdadm -E output from all devices that were in the array?

>
> Do you know what version of kernel and mdadm was used to create the raid5 in
> the first place? You should go back to that (at least the mdadm version) and
> try the --create --assume-clean with that mdadm version. Several key factors
> have changed between versions.

I would not do a --create --assume-clean on your array until you have
exhausted all other options. At 40TB this sounds like a very large
array. With raid5 disk ordering among other things is VERY important.


>
> Look at this thread for a person with similar problem
> <http://www.spinics.net/lists/raid/msg41732.html>, there is discussion about
> data offset etc in there, might be a good start.
>
> --
> Mikael Abrahamsson    email: swmike@xxxxxxxxx
>
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--
Dave Cundiff
System Administrator
A2Hosting, Inc
http://www.a2hosting.com
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