mps0-troubles

[Kenneth D. Merry]

On Fri, Jan 21, 2011 at 20:15:15 +0100, Joachim Tingvold wrote:
> On Thu, Jan 20, 2011, at 16:57:46PM GMT+01:00, Kenneth D. Merry wrote:
> >So did the system freeze or crash this time?
> 
> It happened while I was not actively using the machine. When I found  
> out about it, everything seemed to be fine.

Okay, so that means it didn't panic and didn't lock up permanently, so
things are probably okay.

> >Do you have a serial console on the machine?
> >If it hangs or crashes, perhaps we can get a stack trace.
> 
> You mean normal RS-232?

Yes.

> >It does look like the out of chain problem was fixed by increasing the
> >number, so that's good at least.
> 
> Yes. For now, at least. (-:

Yes.  It looks like you're just getting some timeouts, followed by aborts
and retries.  It's not optimal, but at least the system is recovering and
continuing on.

FWIW, there is some much more sophisticated error recovery code coming
for the driver, written by the guys at Isilon.  That'll come in when LSI
gets done with their version of the driver.

The error recovery that is in there now is basic, but it works in most of
the common cases.  There is a case related to device removal that Justin
fixed that I'm planning to commit in the near future.

Ken
-- 
Kenneth Merry
ken at FreeBSD.ORG