On Fri, 18 Dec 1998, Gualtiero Anselmetti wrote:
> someone knows if there are some problem installing linux on a HP Netserver LC3 with
>onboard aic7880 based SCSI controller ?
I don't know if it's relevant or not, but I've been having some problems
recently on a Dell Poweredge 2200 with on-board AIC-7880 controller. At
semi-random times (with low load), I got 'parity error' messages in my
kernel logs. Sometimes they were followed by SCSI bus resets and/or a
hard lock-up with a message about 'trying to kill the idle task'. This is
with recent 2.1.x series kernels and the 5.1.0 and 5.1.2 aic7xxx drivers.
One thing I found is that the aic7xxx driver defaults to 'parity disabled'
while my SCSI BIOS was set to 'parity enabled'. The boot-up messages say
nothing about parity settings, so I assume there was a conflict between
the SCSI controller setting and the driver setting. Due to a comment in
the aic7xxx.c file about PCI parity check feature being 'dubious at best',
I elected to disable parity in the SCSI BIOS. Alternatively, I could have
leff the PCI parity check enabled in the SCSI BIOS and added a
'aic7xxx=pci_parity' boot parameter. Anyway, since disabling parity check
in the SCSI BIOS, I haven't seen any SCSI parity errors. Then again, I
only made the change 2 days ago. (BTW, I would still appreciate comments
anyone might have about the merits (or demerits) of SCSI parity checks.)
Hope that helps ...
---
Roy Bixler
The University of Chicago Press
[EMAIL PROTECTED]
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