From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: linux-nfs-owner@vger.kernel.org Received: from minas.ics.muni.cz ([147.251.4.40]:37470 "EHLO minas.ics.muni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753976Ab2DEKwF (ORCPT ); Thu, 5 Apr 2012 06:52:05 -0400 Received: from anubis.ics.muni.cz (igw1.zrnko.net [94.112.253.31]) (authenticated user=xhejtman@IS.MUNI.CZ bits=0) by minas.ics.muni.cz (8.13.8/8.13.8/SuSE Linux 0.8) with ESMTP id q35AVjEq016569 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NO) for ; Thu, 5 Apr 2012 12:31:46 +0200 Received: from xhejtman by anubis.ics.muni.cz with local (Exim 4.76) (envelope-from ) id 1SFjyO-0005Li-0j for linux-nfs@vger.kernel.org; Thu, 05 Apr 2012 12:31:24 +0200 Date: Thu, 5 Apr 2012 12:31:24 +0200 From: Lukas Hejtmanek To: linux-nfs@vger.kernel.org Subject: NFSv4 high availability setups Message-ID: <20120405103124.GV4752@ics.muni.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Sender: linux-nfs-owner@vger.kernel.org List-ID: Hi, we got several front-ends for a shared storage. We want to build HA setup so that failed front-end fails over to another front-end (that is serving NFSv4 already). As I understand, NFS4 uses state dir somewhere in /var/lib/nfs/rpc_pipefs. Can we put this state dir on a shared volume so that this state dir is common for all the front-ends serving the same content? Is is supposed to work and NFSv4 can merge its state with existing state on a shared disk? -- Lukáš Hejtmánek