linux-kernel - Re: 2.6.36 io bring the system to its knees

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Message-ID: <4CDAEA8A.7090002@teksavvy.com>
Date:	Wed, 10 Nov 2010 13:55:06 -0500
From:	Mark Lord <kernel@...savvy.com>
To:	Alexey Dobriyan <adobriyan@...il.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dave Chinner <david@...morbit.com>,
	Jens Axboe <axboe@...nel.dk>, dave b <db.pub.mail@...il.com>,
	Sanjoy Mahajan <sanjoy@...n.edu>,
	Jesper Juhl <jj@...osbits.net>,
	Chris Mason <chris.mason@...cle.com>,
	Ingo Molnar <mingo@...e.hu>, Pekka Enberg <penberg@...nel.org>,
	Aidar Kultayev <the.aidar@...il.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Nick Piggin <npiggin@...e.de>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>, Ted Ts'o <tytso@....edu>,
	Corrado Zoccolo <czoccolo@...il.com>,
	Shaohua Li <shaohua.li@...el.com>,
	Steven Barrett <damentz@...il.com>
Subject: Re: 2.6.36 io bring the system to its knees

On 10-11-10 12:10 PM, Alexey Dobriyan wrote:
> On Wed, Nov 10, 2010 at 6:55 PM, Linus Torvalds
> <torvalds@...ux-foundation.org>  wrote:
>> On Wed, Nov 10, 2010 at 8:46 AM, Alexey Dobriyan<adobriyan@...il.com>  wrote:
>>> Those of us, who did (without UPS), will never do it again.

I've used ext2 and ext3 extensively on all of the boxes here,
every since each first became available.   I developed Linux IDE,
the first IDE DMA, lots of custom storage drivers, and more recently
worked on libata drivers.  This meant a LOT of sudden and catastrophic
system failures, as the bugs and other kinks were worked on.

Never lost a nibble.  Totally, utterly reliable stuff for everyday use.
*WITH* the write-caches all enabled on all of the drives, too.

Sure, sudden power-failures could have a better chance of corrupting data,
but those are really rare, and the few that have happened were again non-events 
here.

That's the difference between theory and practice.

Cheers
-ml
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