prcesses stuck in D state (lock_p)

[Christian Guggenberger <Christian.Guggenberger@xxxxxxxxxxxxxxxxxxxxxxxx>]

Hi all,

with recent cvs Kernels (namely with
SGI XFS snapshot 2.4.20-2003-01-14_00:43_UTC with ACLs, quota, no debug 
enabled )
I see, after a week of heavy load, one or often more processes stuck in D 
state.
All that processes are acessing nfs-mounts, such as : (Output of ps -efl)

000 D abc12345   921     1  0  69   0 -   404 lock_p Feb14 ? 00:00:00 md5sum 
-v -c sums

I have also machines accessing the same nfs-share (running 2.4.19-xfs-cvs of 
October) with no problems at all.
I don't want to blame xfs here directly, but I like to know if someone of you 
guys is seeing a similiar behavour...

Thanks
Christian