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Re: LWN article: ext4 and data loss

To: Greg Banks <gnb@xxxxxxx>
Subject: Re: LWN article: ext4 and data loss
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Thu, 12 Mar 2009 11:36:20 -0500
Cc: Martin Steigerwald <Martin@xxxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <49B9396D.7060809@xxxxxxx>
References: <200903121239.35442@xxxxxx> <49B9097C.1070003@xxxxxxxxxxx> (sfid-20090312_151043_496061_D19DDB11) <200903121514.12732.Martin@xxxxxxxxxxxx> <49B92423.4020708@xxxxxxxxxxx> <49B9396D.7060809@xxxxxxx>
User-agent: Thunderbird 2.0.0.19 (X11/20090105)
Greg Banks wrote:
> Eric Sandeen wrote:
>> It's simple.  Want your data safe on disk?  fsync.  There's not a lot
>> more to it than that.  (and if fsync hurts perf too much, re-think how
>> you are storing your data)
>>
>> Filesystems can hack around some heuristics to try to make unsafe apps
>> safer, but in the end, it's the app's job to make sure a buffered write
>> hits permanent storage when it matters.
>>   
> 
> Stewart Smith has a highly entertaining presentation on this very topic.
> 
> http://www.linux.org.au/conf/2007/talk/278.html
> 

and

http://www.flamingspork.com/talks/2007/06/eat_my_data.odp

In hindsight, http://linuxmafia.com/faq/Filesystems/reiserfs.html is
entertaining, too ;)

-Eric

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