panic: lockmgr on FreeBSD 7.0-RELEASE-p4 amd64
Jeff Wheelhouse
freebsd-hackers at wheelhouse.org
Thu Sep 25 23:06:01 UTC 2008
On Sep 25, 2008, at 3:53 PM, John Baldwin wrote:
> You can use KTR instead of printf perhaps and then use 'show ktr'
> from DDB.
> This won't have the same impact on timing as printf(). I would
> include PIDs
> in any KTR traces you do so it's easier to parse the interleaved
> entries from
> multiple CPUs.
OK, while I am educating myself about how KTR works, what would you
like to see? Just mp->mnt_vnodecovered?
> Also, if you have a good test case, it might be worth
> grabbing a box w/o gmirror that can generate a crashdump and
> reproduce it
> there.
Not an option for us right now; spare 8-core boxes are hard to come
by. We're looking for a USB hard drive or something we can dump to.
Thanks,
Jeff
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