Re: Interrupt (SCSI?) hang on 4.x

On Thursday 11 January 2007 16:13, Jeremy Chadwick wrote:
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.

John,

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@xxxxxxxxxxxxxxxxxxxxx:/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:

It was the 1.149.2.7, so you probably have that already. I wasn't sure when
you said "4.11" kernel if you meant RELENG_4_11 or RELENG_4.

--
John Baldwin
_______________________________________________
freebsd-stable@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "freebsd-stable-unsubscribe@xxxxxxxxxxx"

Relevant Pages

  • Re: Interrupt (SCSI?) hang on 4.x
    ... have the knowledge of what's going on on a low-level to determine ... I do have serial console on this box, ... has been known to send a serial break on rare occasion. ... Can you try a RELENG_4 kernel? ...
    (freebsd-stable)
  • Re: Interrupt (SCSI?) hang on 4.x
    ... On Tuesday 02 January 2007 10:36, Jeremy Chadwick wrote: ... I do have serial console on this box, ... has been known to send a serial break on rare occasion. ...
    (freebsd-stable)
  • Re: [Xen-devel] Xen patches merged to upstream Linux 2.6.36, plans for 2.6.37?
    ... I must apologize to have to say that Intel IGD VGA passthrough to my Windows XP Home Edition HVM domU did not succeed/work with Xen 4.0.1-rc6-pre hypervisor and Jeremy Fitzhardinge's pv-ops dom0 kernel 2.6.32.19 in my earlier email. ... I have just added a section to my /boot/grub/grub.conf to enable serial console for Xen 4.0.1-rc6-pre and pv-ops dom0 kernel 2.6.32.19 for kernel debugging/troubleshooting. ... title Fedora with Serial Console ...
    (Linux-Kernel)
  • Re: 6.0 random freezes
    ... the probe/attach sequence relies on the kernel being in a reasonably sane state (and I'm not sure if it will detect the keyboard as a console device except at boot time). ... I'm in process of getting a serial console, so if there's no response as well, I will enable the sanity checks. ...
    (freebsd-stable)
  • Re: Serial console trouble: loader and login works, but no kernel messages
    ... Perhaps the vidconsole is favored when a keyboard is ... during kernel load and then get a login once the OS was up, ... I had to add a kernel argument to my Grub config ... On the serial console, I go from the screen with the FreeBSD logo, ...
    (freebsd-questions)