[CentOS] Intel ICH9R Raid5 Recovery
Ruslan Sivak
russ at vshift.com
Sat May 10 07:12:07 UTC 2008
Mark Pryor wrote:
> --- Ruslan Sivak <russ at vshift.com> wrote:
>
>
>> Sorry for posting this twice, didn't look like it
>> made it before...
>>
>> Russ
>>
>> Ruslan Sivak wrote:
>>
>>> I had a raid5 on an onboard Intel ICH9R chip under
>>>
>> windows. Windows
>>
>>> crashed, as it often does, and the array became
>>>
>> degraded. At some
>>
>>> point during the rebuild, I was doing some
>>>
>> hardware maintanence and
>>
>>> unplugged one of the drives, and forgot to plug it
>>>
>> back in.
>>
>>> When I booted up, the array came back as failed.
>>>
>> I turned off the PC,
>>
>>> plugged the drive back in and powered it back on,
>>>
>> but the array stayed
>>
>>> as failed.
>>> Is there a way to recover the data? I heard
>>>
>> dmraid supports ich9r
>>
>>> raid volumes, but I keep getting an error saying
>>>
>> unsupported map state
>>
>>> 2. I found out that dmraid doesnt' support raid 5
>>>
>> (at least not on a
>>
>>> ICH9R chip). I heard about this patch:
>>> http://people.redhat.com/heinzm/sw/dm/dm-raid45/,
>>>
>> but I'm not sure how
>>
>>> to apply it to a linux live cd. Does anyone have
>>>
>> any idea?
>>
>>> Is there maybe a way to reset the metadata to make
>>>
>> the intel
>>
>>> controller boot the array anyway?
>>>
>
> One of the best live Linux CD's out there is the FC8
> http://mirrors.kernel.org/fedora/releases/8/Live/
>
> uses the 2.6.23 kernel. Knoppix 5.1 is Jan07 and
> kernel 2.6.19
>
> BTW, I hear a lot of negative things about dmraid and
> fakeraid. I have an FC5 desktop box dual booting WinXP
> and FC5 on fakeraid/Raid0 thats been perfect for over
> 3 years. That includes a kernel upgrade in FC5, which
> required me to run mkinitrd (since it froze during
> boot) to get it working.
>
>
Do you think that live cd will have raid5 support for dmraid, or will I
have to use that patch?
Russ
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