On Sat, Sep 1, 2012 at 10:30 PM, gchen <[email protected]> wrote:
> Hello [email protected]
>
>
> Question:
>
> Use ltp stress test (/opt/ltp/ltpstress.sh) with ltp-full-20100331.gz
> to test RHEL5 (kernel-2.6.18-308.4.1.el5) for 72 hours.
>
> Not give any more configurations for NFS (using default configuration:
> mount NFS locally, so the NFS client and NFS server are on the same
> machine).
>
> My question is that "for stress test, is it suitable to let NFS server and
> client on the same machine ?"
>
>
> Background;
>
> This configuration will cause deadlock for RHEL5, and can not boot
> machine in normal way.
>
> someone from Red Hat has said that:
> --------------------------------------------------------------------------------------------------------------
>
> "Have configuration where the same host is acting as both NFS client
> and server. That's a configuration known to cause deadlocks."
>
> --------------------------------------------------------------------------------------------------------------
>
> can reference Red Hat Bugzilla (bug 848706) for more details.
I've done that occasionally on FreeBSD (mount over nfs into a
chroot) before I discovered nullfs (sort of like the unionfs
equivalent on *BSD), but I didn't stress the system. It's an
interesting scenario, but I would say that this is more of a fringe
case than something that one would normally do.
If it helps you better isolate an issue that occurs in scenarios
where the NFS client/server are separate from one another, I'd say go
for it.
Cheers,
-Garrett
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