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Date: Wed, 10 Nov 2010 18:46:21 +0200 From: Alexey Dobriyan <adobriyan@...il.com> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: 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 Wed, Nov 10, 2010 at 5:59 PM, Linus Torvalds <torvalds@...ux-foundation.org> wrote: > On Tue, Nov 9, 2010 at 5:32 PM, Dave Chinner <david@...morbit.com> wrote: >> >> Don't forget to mention data=writeback is not the default because if >> your system crashes or you lose power running in this mode it will >> *CORRUPT YOUR FILESYSTEM* and you *WILL LOSE DATA*. > > You will lose data even with data=ordered. All the data that didn't > get logged before the crash is lost anyway. Linus, are you using with data=writeback? Those of us, who did (without UPS), will never do it again. Propability of non-trivial FS corruption becomes so much bigger. I believe from my experience, average number of crashes before one loses FS becomes single digit number. With data=ordered, it's quite hard. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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