From: Matt Schillinger Subject: Re: An NFS-HA HOWTO anyone? WAS> Re: Stopping NFS, ip address take over, zero-copy NFS for 2.4.21, and misc Date: 22 Sep 2003 09:24:42 -0500 Sender: nfs-admin@lists.sourceforge.net Message-ID: <1064240684.15988.4.camel@mosix> References: Mime-Version: 1.0 Content-Type: text/plain Cc: nfs@lists.sourceforge.net Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Cipher TLSv1:DES-CBC3-SHA:168) (Exim 3.31-VA-mm2 #1 (Debian)) id 1A1Rdr-0000l5-00 for ; Mon, 22 Sep 2003 07:26:19 -0700 Received: from adsl-66-136-174-212.dsl.stlsmo.swbell.net ([66.136.174.212] helo=esds.vss.fsi.com) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.22) id 1A1Rdq-0002D9-4y for nfs@lists.sourceforge.net; Mon, 22 Sep 2003 07:26:18 -0700 To: ian "sison (mailing list)" In-Reply-To: Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: On Sat, 2003-09-20 at 05:22, ian sison (mailing list) wrote: > > On Fri, 19 Sep 2003 rnews@tasking.nl wrote: > > > Chris Worley wrote: > > | 2) IP address takeover between NFS servers. > > | > > | With NFS stateless, and not running lock servers, I thought a simple IP > > | address takeover scheme (when an I/O server goes down, another just adds > > | the failed server's IP address as a virtual interface) would allow > > | clients to immediately renegotiate with the same IP address pointing to > > | another NFS server (serving the same partitions). The take-over is > > | successful: the clients can communicate with the new I/O server, but I > > | get "permission denied" (as root or otherwise) on the NFS mounted > > | partitions most of the time (sometimes it works). > > > > You need to migrate the entries in /var/lib/nfs/rmtab to the new > > machine. Also, when the device number on the new machine differs > > from the device number on the old machine, you need to use the "fsid" > > option in /etc/exports, to make sure the file handles don't change. > > This is important information, and it should go into a howto. NFS-HA is a > very common requirement nowadays, and there's very little information i've > seen on the net except for the Mission Critical Linux site. > I need to update info on the page, and quite honestly, i think the info i have is buggy.. (I will update this week), but i have a document showing how I achieve 'Active-Active' HA NFS over Shared SCSI.. Mainly, it's by replicating rmtab entries by storing mountpoint specific rmtab entries on the shared storage mountpoint... the address is: http://chilli.linuxmds.com/~mschilli/NFS/ Bookmark the page, and I promise by mid week, i'll have it updated.. I will post to the mailing list when the update is complete. Matt Schillinger mschilli@vss.fsi.com > > > > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > _______________________________________________ > NFS maillist - NFS@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/nfs ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs