From: Evgeniy Ivanov <lolkaantimat@gmail.com>
To: Dave Chinner <david@fromorbit.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Jens Axboe <axboe@kernel.dk>, dave b <db.pub.mail@gmail.com>,
Sanjoy Mahajan <sanjoy@olin.edu>, Jesper Juhl <jj@chaosbits.net>,
Chris Mason <chris.mason@oracle.com>, Ingo Molnar <mingo@elte.hu>,
Pekka Enberg <penberg@kernel.org>,
Aidar Kultayev <the.aidar@gmail.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Nick Piggin <npiggin@suse.de>,
Arjan van de Ven <arjan@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>, Ted Ts'o <tytso@mit.edu>,
Corrado Zoccolo <czoccolo@gmail.com>,
Shaohua Li <shaohua.li@intel.com>,
Steven Barrett <damentz@gmail.com>
Subject: Re: 2.6.36 io bring the system to its knees
Date: Wed, 10 Nov 2010 11:08:17 +0300 [thread overview]
Message-ID: <AANLkTikAF=Ka_qB5pPzo9wj_jAp=TG2xSbjaGcoLYfBw@mail.gmail.com> (raw)
In-Reply-To: <20101110013255.GR2715@dastard>
On Wed, Nov 10, 2010 at 4:32 AM, Dave Chinner <david@fromorbit.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*. Not to mention
> the significant security issues (e.g stale data exposure) that also
> occur even if the filesystem is not corrupted by the crash. IOWs,
> data=writeback is the "fast but I'll eat your data" option for ext3.
>
> So I recommend that nobody follows this path because it only leads
> to worse trouble down the road. Your best bet it to migrate away
> from ext3 to a filesystem that doesn't have such inherent ordering
> problems like ext4 or XFS....
Is it save to use "data=writeback" with ext4? At least are there
security issues?
Why do you say, that fs can be corrupted? Metadata is still
journalled, so only data might be corrupted, but FS should still be
consistent.
--
Evgeniy Ivanov
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2010-11-10 8:08 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTimt7wzR9RwGWbvhiOmot_zzayfCfSh_-v6yvuAP@mail.gmail.com>
[not found] ` <AANLkTikRKVBzO=ruy=JDmBF28NiUdJmAqb4-1VhK0QBX@mail.gmail.com>
[not found] ` <AANLkTinzJ9a+9w7G5X0uZpX2o-L8E6XW98VFKoF1R_-S@mail.gmail.com>
2010-10-28 6:09 ` Aidar Kultayev
2010-10-28 6:32 ` Pekka Enberg
2010-10-28 9:00 ` Ingo Molnar
2010-10-28 9:34 ` Pekka Enberg
2010-10-28 11:16 ` Pekka Enberg
2010-10-28 11:33 ` Aidar Kultayev
2010-10-28 11:48 ` Pekka Enberg
2010-10-28 12:18 ` Aidar Kultayev
2010-10-28 13:46 ` Christoph Hellwig
2010-10-28 13:54 ` Ingo Molnar
2010-10-28 13:30 ` Ingo Molnar
2010-10-28 13:47 ` Christoph Hellwig
2010-10-28 13:50 ` Ingo Molnar
2010-10-28 17:01 ` Chris Mason
2010-10-28 17:57 ` Pekka Enberg
2010-10-29 14:52 ` Ted Ts'o
2010-10-29 15:33 ` Aidar Kultayev
2010-10-30 9:14 ` Ingo Molnar
2010-10-30 13:02 ` Aidar Kultayev
2010-10-30 19:06 ` Chris Mason
2010-10-31 2:31 ` Ted Ts'o
2010-10-31 17:49 ` Corrado Zoccolo
2010-11-02 3:10 ` Shaohua Li
2010-11-02 11:47 ` Sanjoy Mahajan
2010-11-02 13:12 ` Chris Mason
2010-11-04 16:05 ` Sanjoy Mahajan
2010-11-04 23:35 ` Steven Barrett
2010-11-04 23:44 ` Jesper Juhl
2010-11-04 23:48 ` Jesper Juhl
2010-11-05 1:43 ` Dave Chinner
2010-11-05 12:48 ` Sanjoy Mahajan
2010-11-06 14:10 ` dave b
2010-11-06 15:12 ` Dave Chinner
2010-11-07 6:06 ` dave b
2010-11-07 12:08 ` Jens Axboe
2010-11-07 15:50 ` Linus Torvalds
2010-11-10 1:32 ` Dave Chinner
2010-11-10 2:01 ` dave b
2010-11-10 8:08 ` Evgeniy Ivanov [this message]
2010-11-10 8:24 ` Dave Chinner
2010-11-10 14:22 ` Pavel Machek
2010-11-10 14:20 ` Pavel Machek
2010-11-10 14:27 ` Ingo Molnar
2010-11-10 14:55 ` Christoph Hellwig
2010-11-10 19:09 ` Pavel Machek
2010-11-10 14:33 ` Theodore Tso
2010-11-10 14:57 ` Christoph Hellwig
2010-11-10 15:00 ` Chris Mason
2010-11-10 23:36 ` Dave Chinner
2010-11-10 15:59 ` Linus Torvalds
2010-11-10 16:46 ` Alexey Dobriyan
2010-11-10 16:55 ` Linus Torvalds
2010-11-10 17:10 ` Alexey Dobriyan
2010-11-10 18:55 ` Mark Lord
2010-11-10 18:27 ` Mike Galbraith
2010-11-10 23:43 ` Dave Chinner
2010-11-06 19:10 ` Arjan van de Ven
2010-11-07 17:16 ` Jesper Juhl
2010-11-09 19:47 ` Evgeniy Ivanov
2010-11-09 20:20 ` Christoph Hellwig
2010-11-09 21:00 ` Chris Mason
2010-10-31 1:22 ` Wu Fengguang
2010-10-31 1:51 ` Wu Fengguang
2010-11-01 1:09 ` Dimitrios Apostolou
2010-11-02 1:20 ` Wu Fengguang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='AANLkTikAF=Ka_qB5pPzo9wj_jAp=TG2xSbjaGcoLYfBw@mail.gmail.com' \
--to=lolkaantimat@gmail.com \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=arjan@infradead.org \
--cc=axboe@kernel.dk \
--cc=chris.mason@oracle.com \
--cc=czoccolo@gmail.com \
--cc=damentz@gmail.com \
--cc=david@fromorbit.com \
--cc=db.pub.mail@gmail.com \
--cc=jj@chaosbits.net \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mingo@elte.hu \
--cc=npiggin@suse.de \
--cc=penberg@kernel.org \
--cc=sanjoy@olin.edu \
--cc=shaohua.li@intel.com \
--cc=tglx@linutronix.de \
--cc=the.aidar@gmail.com \
--cc=torvalds@linux-foundation.org \
--cc=tytso@mit.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox