Date: Wed, 25 Jul 2007 13:12:14 -0400 From: Jim Rees <rees@freebsd.org> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: freebsd-fs@freebsd.org Subject: Re: handling unresonsive NFS servers Message-ID: <20070725171214.GC25749@citi.umich.edu> In-Reply-To: <Pine.GSO.4.63.0707251255180.1429@muncher> References: <Pine.GSO.4.63.0707251255180.1429@muncher>
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Afs has the same problem, and solves it by marking a server "down" when it doesn't respond. The timeout is very long, like a minute or more. Normally this would permanently hang the client, but once the server is marked down, any subsequent operations fail immediately. The client checks periodically to see if the server has come back up. Failing this way is better than waiting forever, because waiting forever results in a reboot when the machine's owner runs out of patience. And by all means, do fix umount -f.
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