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 o8NAb8gh121577 for ; Thu, 23 Sep 2010 05:37:09 -0500 Received: from bombadil.infradead.org (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 69E29184FFBF for ; Thu, 23 Sep 2010 03:38:03 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org [18.85.46.34]) by cuda.sgi.com with ESMTP id Ch2d0W7fIPepmfZc for ; Thu, 23 Sep 2010 03:38:03 -0700 (PDT) Date: Thu, 23 Sep 2010 06:38:02 -0400 From: Christoph Hellwig Subject: Re: XFS errors on large Infiniband fileserver setup Message-ID: <20100923103802.GA16984@infradead.org> References: <29252416bd0d9dc973a909e411dbec6a@phys.ethz.ch> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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: Christian Herzog Cc: xfs@oss.sgi.com On Thu, Sep 23, 2010 at 12:01:55PM +0200, Christian Herzog wrote: > > Dear list, > > my colleague has been running tests without ISER all morning, and so > far we haven't encountered an error, even though we have copied > twice > as much data as for the other tests. Is it possible that a problem in > the transport layer remains undetected and only manifests itself in the > filesystem? 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. 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. _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs