[CentOS] Intel ICH9R Raid5 Recovery

Sat May 10 03:55:13 UTC 2008
Ruslan Sivak <russ at vshift.com>

Sorry for posting this twice, didn't look like it made it before...


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?
> Russ
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