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SubjectSLES10 SP1 (x86_64): Hard-hang when using NFSv4 from HP-UX
Hello,

I'm fighting for a while with using NFSv4 provided by HP-UX 11.31 (ONCplus
B.11.31.04 (ONC+ 2.3)) on a SLES10 SP1 (x86_64) client. HP's NFS is basically that
from Sun. The problems are:

Mounting the filesystems as NFSv3 causes no problems at all, using NFSv4 makes
every file open() attempt to hang hard. I must "kill -9" the processes. Even
"umount -vat nfs4" hangs on umount().

The only messages I get when trying an open is
kernel: Error: state recovery failed on NFSv4 server 192.168.0.20 with error 5

For umount the error message seems to be
rksapas08 kernel: Error: state recovery failed on NFSv4 server 192.168.0.20 with
error 2

On the HP-UX server I see messages like these, but I'm unsure whether they are
related to Linux:
vmunix: NOTICE: sec_clnt_geth: unknown authflavor 2037596260, trying AUTH_NONE
vmunix: NOTICE: sec_clnt_geth: unknown authflavor 10, trying AUTH_NONE

When HP-UX uses NFSv4 (same software as quoted above), no such problems appear.
The server is a four-core Itanium2 (IA64) machine.

I'd appreciate any help towards understanding the error messages and debugging the
problem.

Regards,
Ulrich
P.S. Not subscribed, so please CC:



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