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Re: bad primary superblock - bad magic number !!!

To: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>
Subject: Re: bad primary superblock - bad magic number !!!
From: Leo Davis <leo1783@xxxxxxxxx>
Date: Wed, 12 May 2010 02:19:16 -0700 (PDT)
Cc: xfs@xxxxxxxxxxx
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havent had much success with testing the hard drives, tried mhdd & seatools with no luck yet.

Meanwhile i recreated RAID, all shows up OK for now.

Previously the msgs shown were:

end_request: I/O error, dev cciss/c0d2, sector 0
end_request: I/O error, dev cciss/c0d2, sector 0
end_request: I/O error, dev cciss/c0d2, sector 1

That seems to indicate that the problem is with the disc or array. It is unable to read the beginning of the device.
So is I do a - dd if=/dev/random of=dev/cciss/c0d2 , that should fail and therby confirm that the drive or array has issues...do i make any sense here?


From: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>
To: Leo Davis <leo1783@xxxxxxxxx>
Cc: xfs@xxxxxxxxxxx
Sent: Mon, May 10, 2010 9:22:11 PM
Subject: Re: bad primary superblock - bad magic number !!!

Le Mon, 10 May 2010 11:11:45 -0700 (PDT) vous écriviez:

> I agree. I destroy and re-create raid and everything would show up
> GOOD, only for it to break again. So was wondering whether those
> traces would point to anything.... my prime suspect is hard drives,
> but those xfs msgs confused me.

Check the hard drives separately with the maker utility (Seatools,
etc). One of them at the very least must be seriously ill.

Emmanuel Florac    |  Direction technique
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