[Lustre-discuss] Looping in __d_lookup

Oleg Drokin Oleg.Drokin at Sun.COM
Fri May 16 15:44:38 PDT 2008


Hello!

On May 15, 2008, at 5:34 AM, Jakob Goldbach wrote:

> On a regular basis a process get stuck in __d_lookup. When I dig in it
> seems I'm caught in the hlist_for_each_entry_rcu loop never satisfying
> the exit-from-loop condition.

Hm, so you actually have a circular loop? I wonder if you can e.g. run  
your (or similar setup)
in vmware on or other environment that allows to attach gdb to running  
kernel, reproduce and then
see what's going on.

> Any ideas on how to solve this ? Is this even Lustre issues ?

I did some searches and while I remember some similar thing being  
fixed, I cannot find it
and I think it was only happening on server anyway. Might be somebody  
else can remember more.

Bye,
     Oleg



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