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From: "Andy Chittenden" <andyc@bluearc.com>
To: "Trond Myklebust" <trond.myklebust@fys.uio.no>
Cc: <linux-kernel@vger.kernel.org>,
	"Mr. Charles Edward Lever" <Chuck.Lever@oracle.com>
Subject: RE: Nfs over tcp retries
Date: Mon, 5 Mar 2007 16:29:25 -0000	[thread overview]
Message-ID: <0F10A59FDFFDFD4E9BEBD7365DE672559C65BC@uk-email.terastack.bluearc.com> (raw)
In-Reply-To: <1173111188.6470.26.camel@heimdal.trondhjem.org>

> Why is the server disconnecting from the client in the first 
> place? That
> seems odd...

To cut a long story short, it comes down to a resource issue: the server
decided to sever ties with the client as it knew the client would
reconnect if it needed to.

> Servers commonly implement duplicate request caches that depend on a
> combination of the XID, port number RPC program number and 
> RPC procedure
> number (See http://www.connectathon.org/talks96/werme1.html). In order
> for that to work, the clients have to obey the convention that they
> reuse port numbers as well as XIDs when replaying a request.

Thanks. Since I sent the original message, I'd stumbled upon this thread
too that suggested that:
<http://lists.freebsd.org/pipermail/freebsd-fs/2005-October/001417.html>
.

We're currently looking into what Solaris does.

Thanks again for your help.

-- 
Andy, BlueArc Engineering

  reply	other threads:[~2007-03-05 16:29 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-05 10:42 Andy Chittenden
2007-03-05 16:13 ` Trond Myklebust
2007-03-05 16:29   ` Andy Chittenden [this message]
2007-03-05 16:31 ` Peter Staubach

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