From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from srv5.dvmed.net ([207.36.208.214]:40378 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758060AbZBKVaI (ORCPT ); Wed, 11 Feb 2009 16:30:08 -0500 Message-ID: <4993435C.2090903@garzik.org> Date: Wed, 11 Feb 2009 16:30:04 -0500 From: Jeff Garzik To: Trond Myklebust CC: linux-nfs@vger.kernel.org, nfsv4@linux-nfs.org Subject: Re: NFS clients' use of fs_locations? References: <49932E72.8060209@garzik.org> <1234387040.7423.287.camel@heimdal.trondhjem.org> In-Reply-To: <1234387040.7423.287.camel@heimdal.trondhjem.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Trond Myklebust wrote: > On Wed, 2009-02-11 at 15:00 -0500, Jeff Garzik wrote: >> According to the NFSv4 spec (section 6.1), regarding fs_locations, >> >> On first access of the filesystem, the client should obtain the >> value of the fs_locations attribute. If, in the future, the >> client finds the server unresponsive, the client may attempt to >> use another server specified by fs_locations. >> >> Does any known client actually fail over to another fs_location, as >> described here? >> >> I am implementing the server side of this... AFAICT Linux barely uses >> fs_locations, and Solaris just crashes. > > Hi Jeff, > > I'm working on finishing the migration code, and expect to have it ready > soon. Neat! Will that include the simple fail-over actions described above? > Until that, though, Bruce's suggestion of AIX is probably your best bet. > AFAIK, they've had migration support in their client for several years. Thanks! Any idea at all if AIX client supports fail-over, or simply migration based on NFS4ERR_MOVED? Time to figure out how to access AIX NFS client...... :) Jeff