Hi,
I had (or have) similar hangs (all frozen, no syslog-entry, kernel still
running since ping works, but all user-level stuff hangs). The hardware in
my case is a onboard AIC-7890, an additional AHA-394X, a 3com 3c905B. All
on a Dual-PIII-450 on a Asus motherboard running raidutils 0.9 on a
SMP-2.2.14. I am not completely sure yet if I was able to solve the
problem since it hang at uncertain intervalls. But what I did is make sure
that no interrupt is shared by swapping cards in PCI-slots. The silly bios
allocated the same interrupt to the ethernet card and to the onboard
scsi-controller. Since I swapped the cards around to get a better
interrupt assignment I have no freezes anymore. But since this is only 10
days now I am not yet convinced that it was the actual cause.
-Peter
On 27-Mar-2000 David Cooley wrote:
> Is the PC overclocked in any way?
> I had troubles with my 2940U2W in both Windows and Linux when I
> overclocked
> the Front Side Bus from 100MHz to 103MHz.
> Seems the Adaptec cards can't handle *ANYTHING* over 33.3 MHz on the PCI
> bus.
>
>
>
> At 02:53 PM 3/27/2000, Jeff Hill wrote:
>>Thanks to everyone for the assistance.
>>
>>I did recompile the kernel with Translucent disabled (I don't know why
>>it is enabled by default?). Unfortunately, this has not affected the
>>problem.
>>
>>As for the Adaptec, I had checked on a hardware discussion list and
>>understood that, while some Adaptec's were problematic, the unit I
>>purchased (the 2940U2W with matching factory cables) was working well
>>for several Linux users.
>>
>>However, it seems to me from my limited experience that the Adaptec may
>>be the problem as it would fit the type of hanging that seems to occur
>>(no error messages, everything just freezes -- possibly waiting for the
>>Adaptec to send the data through).
>>
>>I am still unable to find any log or anyway of tracing the system hangs.
>>I may try debugging on the SCSI (haven't a clue how) for a few days
>>before trying to turn off RAID. Before buying another card (I have no
>>others), I'll hope some reconfiguration of the Adaptec will do the
>>trick. I hate to dump all that money down the drain.
>>
>>Thanks again to everyone for the assistance.
>>
>>Jeff Hill
>>
>>"m. allan noah" wrote:
>> >
>> > jeff- i am using 2.2.14 with mingo patch, and it is great. i have a
>> dozen or
>> > so boxes, 512meg, SMP pIII 450, ncr scsi, etc in this config. all are
>> > fine.
>> >
>> > it would be interesting to see if raid is the issue, or your adaptec
>> > (i am
>> > inclined to think the latter).
>> >--<snip>--<
>
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