On Sat, Jul 30, 2011 at 09:30:25AM +1000, NeilBrown wrote:

On Sat, 30 Jul 2011 06:34:44 +1000 Greg Banks [off-list ref] wrote:

quoted

The "killall nfsd" semantics in those scripts are awful and lead to  
problems shutting down when there are lots of threads. It would  
probably be an improvement to provide a better shutdown mechanism and  
force distros to use it.

rpc.nfsd 0

will stop all nfsd threads.  Follow with

  exportfs -f

and you should be done.  I'm not 100% sure about the nfsv4 thread though -
would need to check.

And yes - I would love it if distros could standardise on start/stop scripts
so upstreams could maintain them sensibly.  This is my personal number 1
reason for liking systemd - it pushes for this standardisation.

I can't remember if this is getting fixed in Fedora--probably not.  We
should fix it.

I'd also be fine with logging a deprecation message when someone signals
an nfsd thread.

quoted

Or, you could preserve the effective semantics by having a single  
"nfsd" thread whose purpose is to notice that it's being signalled and  
perform a clean shutdown (perhaps blocking the thread doing the kill()  
call until the shutdown has completed).

That's kinda neat.  It would be an ugly wart to have to keep around, but
sometimes that the price we pay for "no regressions".

Yep; patch welcomed.

--b.
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