Path: utzoo!utgpu!watserv1!watmath!att!pacbell.com!decwrl!sun-barr!newstop!eastapps!hinode!geoff
From: geoff@hinode.East.Sun.COM (Geoff Arnold @ Sun BOS - R.H. coast near the top)
Newsgroups: comp.protocols.nfs
Subject: Re: Avoiding resource waits on unavailable hard mounted fs
Message-ID: <4301@eastapps.East.Sun.COM>
Date: 14 Feb 91 20:53:44 GMT
References: <1991Feb14.035507.28805@massey.ac.nz>
Sender: news@East.Sun.COM
Reply-To: geoff@east.sun.com (Geoff Arnold @ Sun BOS - R.H. coast near the top)
Organization: Sun Microsystems PC-NFS Engineering
Lines: 22

Quoth G.Eustace@massey.ac.nz (Glen Eustace) (in <1991Feb14.035507.28805@massey.ac.nz>):
#I am trying to write some code that will determine whether an NFS
#mounted partition is currently accessible.  The filesystem is hard
#mounted and most file system will hang on a resource wait until such
#time as the server is back up again.  As this is part of a larger
#program I don't want this to occur.
#
#I want to determine whether an access will hang prior to attempting
#to access the file system in order to take some evasive action.

Well, I assume that you know the identity of the server. In that case,
you could code up a simple RPC call to procedure 0 of the NFS program
on the server, setting the timeouts appropriately. If you're going
to do this very often, you probably want to use some of the lower-level
API calls to bypass the portmap call.

Geoff

-- Geoff Arnold, PC-NFS architect, Sun Microsystems. (geoff@East.Sun.COM)   --
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--                   No cute comments. War isn't cute.                      --
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