From mboxrd@z Thu Jan 1 00:00:00 1970 From: Blake Golliher Subject: Re: [NFS] I/O Errors with hard mounts Date: Wed, 04 Jun 2008 08:20:03 -0700 Message-ID: References: <4f0f0cb0806040633x74fd0afbm94866cf85810f242@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 To: David Konerding , Return-path: Received: from neil.brown.name ([220.233.11.133]:56525 "EHLO neil.brown.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754221AbYFDPVE convert rfc822-to-8bit (ORCPT ); Wed, 4 Jun 2008 11:21:04 -0400 Received: from brown by neil.brown.name with local (Exim 4.63) (envelope-from ) id 1K3unJ-00015t-Fw for linux-nfs@vger.kernel.org; Thu, 05 Jun 2008 01:20:57 +1000 In-Reply-To: <4f0f0cb0806040633x74fd0afbm94866cf85810f242-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: Can you take a trace on the client when the =8Ci/o error=B9 message sho= ws up? I suppose that=B9d be hard, but that=B9d tell us pretty quick where the m= essage is coming from. You could also take a trace from the filer if that's easi= er using pktt. -Blake On 6/4/08 6:33 AM, "David Konerding" wrote: > Hi, >=20 > We have a bunch of Linux clients (SLES 10 SP1) which mount a NetApp f= iler. >=20 > 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. >=20 > 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. >=20 > 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. >=20 > 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...= ) >=20 > 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. >=20 > Any ideas? >=20 > Dave >=20 > ---------------------------------------------------------------------= ---- > 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 >=20 -----------------------------------------------------------------------= -- 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