Re: mtrash_ctor panic caused by ACPI and ATAng was Re: Interrupts, ATAng, and wayward pointers, oh my!

On Mon, Feb 09, 2004 at 10:10:26AM -0800, Doug White wrote:
> On Fri, 6 Feb 2004, Steve Kargl wrote:
> 
> > Yes, intriguing.  I used the better part of 1 day to eliminate
> > possibilities for the problem.  I forgot to mention the problem
> > does not depend on APIC or no APIC support in the kernel.
> >
> > > > PS: No, I can't get a core dump because the disk subsystem isn't
> > > >     ready for a dump when the panics occurred and I can't hook
> > > >     up a serial console.  I can panic the machine as needed.
> > >
> > > You can say 'set dumpdev=/dev/foo0s1b' in loader to set the dump target.
> > >
> >
> > This doesn't work unless I can get a near instantaneous dump. That is,
> > db> call dumpsys
> > returns in under a second.  Revision 1.19 of ata-queue.c (note the
> > typo of ata-queue.h above) reworked the locking of ATA.  I suspect
> > that my laptop is tickling some race that Soren hasn't seen.
> 
> try 'call doadump()'
> 

db> call doadump()
Dumping 511 MB

Dump failed.  Partition too small.
0x23

/dev/ad0s3b is a 1 GB swap partition.  I guess I'm going to
have to try to find a serial cable or simply run without ACPI.

-- 
Steve