Return-Path: Received: from mail-pv0-f174.google.com ([74.125.83.174]:59924 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758808Ab0EVWEI (ORCPT ); Sat, 22 May 2010 18:04:08 -0400 Received: by pvg4 with SMTP id 4so281591pvg.19 for ; Sat, 22 May 2010 15:04:06 -0700 (PDT) Message-ID: <4BF854D4.5090500@gmail.com> Date: Sun, 23 May 2010 07:04:04 +0900 From: redshield88888 To: linux-nfs@vger.kernel.org Subject: How does the metadata-server synchronizes with data-servers ? Content-Type: text/plain; charset=ISO-2022-JP Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Hi, all. I've succeeded to install pNFS-enabled kernel. But I wonder that how does pNFS behaviour. Especially, about synchronizations between the MetaDataServer and DataServers. I'd read a paper of the Calsoft's. This paper said like "There is heartbeats betweenthe MetaDataServer and DataServers". http://www.calsoftinc.com/download_pdf/White%20Papers%20-%20pnfs.pdf When will this heartbeat be started ? The instruction below is not describe about this, but the heartbeat will works, w'not this ? http://wiki.linux-nfs.org/wiki/index.php/PNFS_Setup_Instructions