SCB timeout and other errors + system hang with adaptec/seagate

So,

These error are still cropping up on some of my machines.
After upgrading 
the drive firmware and disabling SMART, some of my machines
are stable 
(and no longer generate the SCB timeout error).

I am still having problems on a few of the machines though,
and I have a 
new piece of data. It seems that when they hang they are
generating 
'swap_pager: indefinite wait buffer: device ...' messages.
I noticed that 
fixing swap_pager warnings are on the to-do list for 6.1
release. I have 
not seen any bug reports that give more detail on what
exactly the problem 
is. Does anyone have any more info on this? Is there an
experimental patch 
I can try? I suspect that the swap_pager problem is not the
_only_ 
problem, but it might be what is causing the remaining
machines to hang.

Thanks.

-
Rob Watt

On Wed, 8 Mar 2006, Justin T. Gibbs wrote:

> The termination looks correct.  I'll review your other
logs
> to see why we're failing during recovery.
>
> --
> Justin
>
> --On Wednesday, March 08, 2006 9:35 AM -0500 Rob Watt 
> <robhudson-trading.com> wrote:
>
>> ---------- Forwarded message ----------
>> Date: Tue, 7 Mar 2006 10:06:53 -0500 (EST)
>> From: Rob Watt <robhudson-trading.com>
>> To: Justin T. Gibbs <gibbsscsiguy.com>
>> Cc: Rob Watt <robhudson-trading.com>
>> Subject: Re: SCB timeout and other errors + system
hang with
>> adaptec/seagate
>> 
>> On Mon, 6 Mar 2006, Justin T. Gibbs wrote:
>> 
>>> Can you send me a dmesg from a boot -v? 
Perhaps we're not
>>> getting the termination settings correct on the
SCSI controller.
>>> The verbose dmesg should tell.
>> 
>> attached is the verbose dmesg.
>> 
>> thanks
>> 
>> -
>> Rob Watt
>
>
>
>
>
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On Wednesday 29 March 2006 11:57, Rob Watt wrote:
> So,
>
> These error are still cropping up on some of my
machines. After upgrading
> the drive firmware and disabling SMART, some of my
machines are stable
> (and no longer generate the SCB timeout error).
>
> I am still having problems on a few of the machines
though, and I have a


I got SCB erros on my SCSI servers recently
I changed the adapter (Adaptec) cable and terminator and no
change

I need to say that I have not seen this problem on releng_6
before a month ago 
but on early 6.0-Stable in beginning of december

So I changed the slot of the adapter card and it worked for
more or less time 
before getting the error, since I had polling enabled I
didn't saw the NIC 
IRQs, so I disabled polling to see

I disabled polling by not compiling it in and the effexted
machines are 
running stable since two weeks now

strange that there is no HW IRQ conflict

disabling polling on a 4.11-STABLE machine resolved the same
problem

joćo







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