Ruibiao Qiu wrote:
> Thanks for the information, but this causes all nfsrv_* to fail,
> so the clients get "Input/output errors" accessing the files on
> the server.

Well, according to brief scan through nfs code, ESTALE is also
returned if the file vnode on server is reused.  You may try tu bump
kern.maxvnodes on the server - maybe it would help.

Jaromir
-- 
Jaromir Dolecek <jdolecek@NetBSD.org>      http://www.ics.muni.cz/~dolecek/
@@@@  Wanna a real operating system ? Go and get NetBSD, dammit!  @@@@