From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id o8NBprgE124320 for ; Thu, 23 Sep 2010 06:51:53 -0500 Received: from phd-imap.ethz.ch (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id CCB9418505C6 for ; Thu, 23 Sep 2010 04:52:47 -0700 (PDT) Received: from phd-imap.ethz.ch (phd-imap.ethz.ch [129.132.80.51]) by cuda.sgi.com with ESMTP id HoeuE3h6KliFAYM4 for ; Thu, 23 Sep 2010 04:52:47 -0700 (PDT) Subject: Re: XFS errors on large Infiniband fileserver setup MIME-Version: 1.0 Date: Thu, 23 Sep 2010 13:52:46 +0200 From: Christian Herzog In-Reply-To: <20100923103802.GA16984@infradead.org> References: <29252416bd0d9dc973a909e411dbec6a@phys.ethz.ch> <20100923103802.GA16984@infradead.org> Message-ID: <5c4318884cb2c4d3983fd5231c2e4b17@phys.ethz.ch> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Christoph Hellwig Cc: xfs@oss.sgi.com > Yes, that could very well possible. While I'm not an expert on iSER it > looks like it doesn't use the software crc32c checksums in iscsi over > TCP but relies on the RDMA protocols guaranteeing it. that would explain quite a lot actually. Thanks for the hint. > Btw, what target do you use? According to > http://www.spinics.net/lists/linux-stgt/msg02038.html it seems like the > stgt iser target has some issues that look quite similar to yours. we're using tgt which might have a similar problem. As even IB over TCP is several times faster than our disks, we will now proceed w/o iSER to have the system running and then experiment with iSER on a test system. thanks, -Christian _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs