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From: "Bart Van Assche" <bart.vanassche@gmail.com>
To: Valdis.Kletnieks@vt.edu
Cc: nab@kernel.org, linux-iscsi-target-dev@googlegroups.com,
	LKML <linux-kernel@vger.kernel.org>,
	linux-scsi <linux-scsi@vger.kernel.org>,
	"H. Peter Anvin" <hpa@zytor.com>, Christoph Hellwig <hch@lst.de>,
	FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
	James Bottomley <James.Bottomley@hansenpartnership.com>,
	Mike Christie <michaelc@cs.wisc.edu>,
	Hannes Reinecke <hare@suse.de>,
	Jens Axboe <jens.axboe@oracle.com>
Subject: Re: [Announce]: Target_Core_Mod/ConfigFS and LIO-Target v3.0 work
Date: Sat, 13 Dec 2008 10:41:53 +0100	[thread overview]
Message-ID: <e2e108260812130141o3d21bbbdob9e7c9f95d309a74@mail.gmail.com> (raw)
In-Reply-To: <54939.1229149205@turing-police.cc.vt.edu>

On Sat, Dec 13, 2008 at 7:20 AM,  <Valdis.Kletnieks@vt.edu> 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.

  parent reply	other threads:[~2008-12-13  9:41 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-11  3:14 [Announce]: Target_Core_Mod/ConfigFS and LIO-Target v3.0 work Nicholas A. Bellinger
2008-12-11 19:24 ` Bart Van Assche
2008-12-11 19:58   ` Nicholas A. Bellinger
2008-12-12  7:21     ` Bart Van Assche
2008-12-12  9:40       ` Nicholas A. Bellinger
2008-12-13  6:20         ` Valdis.Kletnieks
2008-12-13  8:27           ` Nicholas A. Bellinger
2008-12-13  9:41           ` Bart Van Assche [this message]
     [not found]             ` <1229162907.4153.857.camel@haakon2.linux-iscsi.org>
     [not found]               ` <e2e108260812130223q13fd98d8gc1e55881a92b939@mail.gmail.com>
2008-12-13 11:18                 ` Nicholas A. Bellinger
2008-12-13 11:56                   ` Bart Van Assche
2008-12-13 12:33                     ` Nicholas A. Bellinger
     [not found]                       ` <e2e108260812130450y3288b32av7f435544823d9e97@mail.gmail.com>
2008-12-13 13:14                         ` Nicholas A. Bellinger
2008-12-13 15:24                     ` James Bottomley
2008-12-13 22:50                       ` Nicholas A. Bellinger
2008-12-14 16:53                         ` Bart Van Assche
2008-12-16 18:45                       ` Vladislav Bolkhovitin
2008-12-13 15:35                   ` Vladislav Bolkhovitin

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