Date: Wed, 25 Jul 2007 13:37:16 -0500 From: Eric Anderson <anderson@freebsd.org> To: Jim Rees <rees@freebsd.org> Cc: freebsd-fs@freebsd.org Subject: Re: handling unresonsive NFS servers Message-ID: <46A7985C.3010202@freebsd.org> In-Reply-To: <20070725171214.GC25749@citi.umich.edu> References: <Pine.GSO.4.63.0707251255180.1429@muncher> <20070725171214.GC25749@citi.umich.edu>
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Jim Rees wrote: > 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. For 'fail immediately', what does that mean? It returns EIO? That might be sufficient, although I think 1min is pretty low for NFS. Of course, if it's settable, then that's good. :) Eric
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