Again: Process stuck in D state while locking in NFS

From: Miklos Szeredi (Miklos.Szeredi@eth.ericsson.se)
Date: Wed Feb 09 2000 - 12:56:02 EST


bcica:~ # ps lw 7577
 FLAGS UID PID PPID PRI NI SIZE RSS WCHAN STA TTY TIME COMMAND
  8100 10348 7577 1 0 0 3840 2284 rpc_execute D ? 0:00 ./gkeeper

This is the second time in two days, that a process gets stuck in
rpc_execute. It is the same program, run as non-root, trying to do an
ordinary F_SETLKW fcntl() for a read lock.

It succeeds thousands of the times, but this time it has locked up the
process. I know it is in the locking operation because /proc tells me
only the lockfile is open.

I don't understand why the process is locked up, but I do not think
that it is normal :(. Isn't there a timeout for whatever it is trying
to do?

I would be happy to collect some more information, if somebody told me
how to turn on debugging for the RPC layer, etc...

Thanks,
Miklos

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