[OpenAFS-devel] Strange hangs in openafs 1.4.1 linux 2.6.17.7

[Jeffrey Hutzelman]

On Tuesday, September 12, 2006 12:37:03 PM +0200 Jerry Lundstr=F6m=20
<jerry.lundstrom@it.su.se> wrote:

> Tom Keiser wrote:
>> The i/o timing characteristics of memcache/ramdisk are very different
>> than a physical disk.  It's quite possible that these timing
>> differences are allowing you to hit a race condition in the cache
>> manager.  Is there any way you can provide us with a kernel stack
>> backtrace for the process(es) which gets stuck in afs_cv_wait?
>> Alternatively, could you provide us with an fstrace dump leading up to
>> the deadlock?
>
> If you give me hints how?

echo t > /proc/sysrq-trigger

Then extract the resulting output from /var/log/messages or whereever.