Interrupt (SCSI?) hang on 4.x
koitsu at FreeBSD.org
Thu Jan 11 13:13:01 PST 2007
On Thu, Jan 11, 2007 at 01:40:48PM -0500, John Baldwin wrote:
> On Tuesday 02 January 2007 10:36, Jeremy Chadwick wrote:
> > Yes, I know 4.11 is EOL'd at the end of this month, but hopefully
> > someone can shed some light on this problem anyways. I simply don't
> > have the knowledge of what's going on on a low-level to determine
> > the cause.
> > I do have serial console on this box, and after enabling some
> > debugging for the ahc(4) driver a few months back, was able to
> > get something intelligent out of the system regarding SCBs this
> > morning. This may not be useful (or the cause), though. I also
> > cannot enable drop-to-DDB-on-serial-break because our Portmaster 2
> > has been known to send a serial break on rare occasion. :-(
> > Every so often (sometimes hours, sometimes months -- usually months),
> > the 4.11 box we have "locks up" in the sense that both NICs on the
> > box stop working, and the SCSI controller also appears hung. This
> > problem has existed for a couple years; it's not specific to 4.11
> > (versus 4.10 or 4.9).
> Can you try a RELENG_4 kernel? I know of at least one fix (in
> sys/i386/isa/clock.c) since 4.11 was released that might help you out.
Thanks for the tip.
The kernel I'm using was built on the following date (thus, src-all
for release=cvs tag=RELENG_4 was cvsup'd about an hour prior to this):
FreeBSD pentarou.parodius.com 4.11-STABLE FreeBSD 4.11-STABLE #0: Sun May 28 12:02:42 PDT 2006 root at pentarou.parodius.com:/usr/obj/usr/src/sys/PENTAROU i386
Which revision of sys/i386/isa/clock.c might have fixed the problem?
I only see 1 commit between May 28th 2006 and present:
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
| Making life hard for others since 1977. PGP: 4BD6C0CB |
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