From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756416AbYLMJmL (ORCPT ); Sat, 13 Dec 2008 04:42:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754744AbYLMJl5 (ORCPT ); Sat, 13 Dec 2008 04:41:57 -0500 Received: from fg-out-1718.google.com ([72.14.220.156]:12919 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754458AbYLMJl4 (ORCPT ); Sat, 13 Dec 2008 04:41:56 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=UjKdvUiDcBHqxdjmKr9LifoNE3NM6SJJhwrulOP9gcgoODLy3Z6/JaYMNWzOQoqeQp X2sfJltNcrtvqRiNBuuZxELxOoVjF97whvwrY+4ldr4/xkMkiHSsYjKfXcizV4nktEcl U0+O2uuxW9vRuAoOGIhi6RHRL3FXa+mZoU6f0= Message-ID: Date: Sat, 13 Dec 2008 10:41:53 +0100 From: "Bart Van Assche" To: Valdis.Kletnieks@vt.edu Subject: Re: [Announce]: Target_Core_Mod/ConfigFS and LIO-Target v3.0 work Cc: nab@kernel.org, linux-iscsi-target-dev@googlegroups.com, LKML , linux-scsi , "H. Peter Anvin" , "Christoph Hellwig" , "FUJITA Tomonori" , "James Bottomley" , "Mike Christie" , "Hannes Reinecke" , "Jens Axboe" In-Reply-To: <54939.1229149205@turing-police.cc.vt.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1228965271.4153.510.camel@haakon2.linux-iscsi.org> <1229025513.4153.542.camel@haakon2.linux-iscsi.org> <1229074809.4153.666.camel@haakon2.linux-iscsi.org> <54939.1229149205@turing-police.cc.vt.edu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Dec 13, 2008 at 7:20 AM, wrote: > On Fri, 12 Dec 2008 01:40:09 PST, "Nicholas A. Bellinger" said: > >> Too bad, because you are missing out on the most advanced ConfigFS >> enabled storage engine on the planet. > > OK. I *have* to ask.. ;) > > What's the *second* most advanced configfs-enabled storage engine? Please don't let Nicholas Bellinger mislead you. The most important aspect of a storage engine is stability. Last January I ran performance tests on IET, STGT, SCST and LIO. I quickly found out not only that SCST had the highest throughput and the lowest latency, but also that the performance tests on LIO triggered several kernel crashes. I have reported these crashes to the linux-iscsi-target-dev mailing list, but even as of today, it's not yet clear whether all of these crashes have been fixed. During the last ten years I have filed bug reports for many open source projects, and the LIO project is the only project where the (kernel) crashes I reported were not addressed immediately. See also: * February 1, 2008, LIO kernel panic during configuration, http://groups.google.com/group/linux-iscsi-target-dev/browse_thread/thread/74c8b37f24b84e59/d94c07626bd20521?lnk=gst&q=kernel+panic#d94c07626bd20521. * February 8, 2008, kernel crash triggered by LIO, http://groups.google.com/group/linux-iscsi-target-dev/browse_thread/thread/30835aede1028188/5708e16a23367fb4?lnk=gst&q=kernel+crash#5708e16a23367fb4. * February 13, 2008, LIO target kernel code triggers memory corruption, http://groups.google.com/group/linux-iscsi-target-dev/browse_thread/thread/ddc1bf7666372972/2150a09f9ed3d1cd?lnk=gst&q=ipoib#2150a09f9ed3d1cd. * February 18, 2008, LIO target makes entire system hang, http://groups.google.com/group/linux-iscsi-target-dev/browse_thread/thread/6a76f9efd9409fc5/55bd8840b6a5f757?lnk=gst&q=lio+target+hangs#55bd8840b6a5f757. Bart.