From mboxrd@z Thu Jan 1 00:00:00 1970 From: "David Konerding" Subject: [NFS] I/O Errors with hard mounts Date: Wed, 4 Jun 2008 06:33:18 -0700 Message-ID: <4f0f0cb0806040633x74fd0afbm94866cf85810f242@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: nfs@lists.sourceforge.net Return-path: Received: from neil.brown.name ([220.233.11.133]:48774 "EHLO neil.brown.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751130AbYFDNdc (ORCPT ); Wed, 4 Jun 2008 09:33:32 -0400 Received: from brown by neil.brown.name with local (Exim 4.63) (envelope-from ) id 1K3t7J-0000nE-0l for linux-nfs@vger.kernel.org; Wed, 04 Jun 2008 23:33:29 +1000 Sender: linux-nfs-owner@vger.kernel.org List-ID: Hi, We have a bunch of Linux clients (SLES 10 SP1) which mount a NetApp filer. When the NetApp gets very, very busy, for example, one user is deleting 1Tbyte of data while another user is doing a 30 client throughput test, it will stop responding to some requests. Although we are using hard mounts, some users report that during the hammering period, some of their file operations produce "I/O Error" messages on their terminal. We checked, and the hosts are indeed using hard mounting. From our reading, I/O Errors should only ever make it back to the user if are using soft mounting. We're pretty sure the filer is not sending back an NFS_ERR response (and we're pretty sure that wouldn't get reported to the user as an I/O Error...) At this point, we suspect there must be a path in the NFS implementation that returns I/O Error to user space even with a hard mount. Any ideas? Dave ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs _______________________________________________ Please note that nfs@lists.sourceforge.net is being discontinued. Please subscribe to linux-nfs@vger.kernel.org instead. http://vger.kernel.org/vger-lists.html#linux-nfs