Re: NFS locking: lockf freezes (rpc.lockd problem?)

On Sun, 27 Aug 2006, Greg Byshenk wrote:
On Sun, Aug 27, 2006 at 11:24:13AM +0000, Michael Abbott wrote:
I've been trying to make some sense of the "NFS locking" issue. I am
trying to run
# make installworld DESTDIR=/mnt
where /mnt is an NFS mount on a FreeBSD 4.11 server, but I am unable to
get past a call to `lockf`.

I have just performed a test of what you describe, using 'smbtest'
(6.1-STABLE #17: Fri Aug 25 12:25:19 CEST 2006) as the client and
'data-2' (FreeBSD 6.1-STABLE #16: Wed Aug 9 15:38:12 CEST 2006) as the
server.
...
Which is to say that it completed successfully. Which suggests that there
is not a serious and ongoing problem.

Hm. That's a useful data point: thanks for making the test!

What about the non-interruptible sleep? Is this regarded as par for the course with NFS, or as a problem?

I know that "hard" NFS mounts are treated as completely unkillable, though why `kill -9` isn't made to work escapes me, but a locking operation which (presumably) suffers a protocol error? Or is rpc.lockd simply waiting to hear back from the (presumably broken) NFS server? Even so: `kill -9` ought to work!
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