On Thursday April 26, pryke@xxxxxxxxxxxxxxxxxx wrote:
> have a system with 12 SATA disks attached via SAS. When copying into the
> array during re-sync I get filesystem errors and corruption for raid6 but not
> for raid5. This problem is repeatable. I actually have 2 separate 12 disk
> arrays and get the same behavior on both.
>
> Does this sound familiar to anyone?
Yes.
>
> Here's a little more detail:
>
> - 8 core AMD64 system running RHEL4U4 kernel 2.6.9-42.0.3.ELsmp
^^^^^
2.6.9 is very old. If you want support for RHEL, you should really be
asking RedHat.
Tell them it might be fixed by
http://linux.bkbits.net:8080/linux-2.6/?PAGE=gnupatch&REV=1.1938.340.65
(I'm not sure how stable that URL is ... maybe take a copy now. it
should start
#### ChangeSet ####
2004-11-11 13:48:33-08:00, neilb@xxxxxxxxxxxxxxx
[PATCH] md: fix raid6 problem
Sometimes it didn't read all (working) drives before a parity calculation.
)
but I cannot be certain (it was a long time ago).
That patch came out after 2.6.9 but about 2 months.
So another option is to build a more recent kernel.
NeilBrown
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