From: Trond Myklebust <trond.myklebust@fys.uio.no>
Subject: Re: [PATCH 003 of 4] Make RPC 'ping' requests fail more
	quickly.
Date: Wed, 15 Nov 2006 12:14:30 -0500
Message-ID: <1163610870.5691.177.camel@lade.trondhjem.org>
References: <20061024122646.4426.patches@notabene> <1061024024903.4760@suse.de>
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Cc: Olaf Kirch <okir@suse.de>, Chuck Lever <chuck.lever@oracle.com>,
	nfs@lists.sourceforge.net
To: NeilBrown <neilb@suse.de>
In-Reply-To: <1061024024903.4760@suse.de>
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Errors-To: nfs-bounces@lists.sourceforge.net

On Tue, 2006-10-24 at 12:49 +1000, NeilBrown wrote:
> Sometimes when an RPC client is created, an initial 'PING' is sent to
> the RPC/NULL procedure to make sure the server is running.
> This is always done as a 'soft' call so a major timeout will be fatal.
> 
> We change semantics so that if portmap reports that the service does
> not exist, or if a ECONNREFUSED error is returned we abort early
> rather than persist for the full timeout.

What if the server is in the process of booting? If the RPC layer
doesn't handle that case, then we will have to add a loop to sleep and
wait in the NLM client.

Cheers
  Trond


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