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SubjectRe: AIC7xxx errors in 2.2.19 but not in 2.2.18
Holger Kiehl schrieb:
> Hello
> I am getting SCSI errors with an onboard Adaptec AIC-7890/1 Ultra2, but
> only under very heavy disk load and only under kernel 2.2.19. These errors
> do not appear under 2.2.18.
> The system I have is a dual PIII-450 with 6 disks attached to the controller.
> All disks are put together in SW-Raid5 array with one configured as hot
> spare.

(..log snipped..)

> >From Alan's changelog I see that there where changes in the AIC7xxx code.
> Any idea what is wrong here?


I (and someone else) had also mysterious problems with AIC7xxx and
RAID1/5, but we use Kernel 2.4.x.

In Kernel 2.4.x you can choose between two versions of the
aix7xxx-driver, one "old" one (Version 5.2.x) and a "new" one (Version
6.x.x). Do a "cat /proc/scsi/aic7xxx/0" to find your version.

We both found out that our problems dissapear when we use the "old"
driver (my tests are still in progress because my error (always the same
scsi-disk falling out of an raid5-array with an "internal error", but
the disk seems to be good) only appeared randomly about once a week, so
i still have to wait if it is really gone.

So perhaps you can try to use the older driver or determine the version
of your aic7xxx-driver. Perhaps you can use the aic7xxx-driver from
kernel 2.2.18 in Kernel 2.2.19 ?

You should also boot your system with the parameter "aic7xxx=verbose",
that will provide more infos in the syslog.


Frank Schneider, <SPATZ1@T-ONLINE.DE>.
Microsoft isn't the answer.
Microsoft is the question, and the answer is NO.
... -.-
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