[OpenAFS] Random hangs with OpenAFS 1.2.11 and RHEL 3

Jack Neely slack@quackmaster.net
Tue, 27 Apr 2004 10:28:42 -0400

I think I can confirm this.  Very similar settup and I've had my RHEL
development box hard lock twice.  Both times were using rsync to copy
data into AFS.

What does cmdebug actually do?

Jack Neely

On Mon, Apr 26, 2004 at 11:17:48AM -0700, Tim Carlson wrote:
> We've been experiencing some random hangs with OpenAFS 1.2.11 client and
> RHEL 3.  I say they are random because I have not yet been able to
> reproduce the hang. A bit more info on our setup:
> OpenAFS 1.2.11 (rebuilt source RPMS to add in our own ThisCell, CellServDB
> and add a bit in the init script that does an "fs sysname i386_aw3")
> RHEL WS 3 (kernels 2.4.21-9.0.3.ELsmp 2.4.21-9.0.1.ELsmp 2.4.21-9.ELsmp)
> Our AFS servers are the latest Transarc running on Solaris/Sparc.
> What seems to happen is the machine will lock up on occasion when you do a
> more/less on a file. This seems to happen once every few days. It is very
> strange because we have our home directories in AFS and have pine or
> mozilla running all the time pointing to our AFS home directories. The
> problem doesn't seem to be related to increased AFS I/O because I can run
> the bonnie++ benchmark in an AFS volume and not cause the system to lock.
> When I say the system locks, I mean that there is no longer any response
> from the console (running Gnome). You can ping the box, but it does not
> answer ssh requests. The only solution is a power cycle.
> There are no message in the logs related to the lockups.
> Has anybody experienced similar problems? Any workarounds/solutions?
> Thanks
> Tim
> Tim Carlson
> Voice: (509) 376 3423
> Email: Tim.Carlson@pnl.gov
> EMSL UNIX System Support
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Jack Neely <slack@quackmaster.net>
Realm Linux Administration and Development
PAMS Computer Operations at NC State University
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