linux-ext4 - Re: barriers off by default?

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Message-ID: <482883FD.8060001@redhat.com>
Date:	Mon, 12 May 2008 12:53:01 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	Eric A <erpo41@...il.com>
CC:	ext4 development <linux-ext4@...r.kernel.org>
Subject: Re: barriers off by default?

Eric A wrote:
> On Mon, May 12, 2008 at 9:56 AM, Eric Sandeen <sandeen@...hat.com> wrote:
>> As I look at my shiny new 500G disks with 32MB of cache, I find myself
>>  wondering why the default for ext3 and ext4 is to have barriers disabled.
>>
>>  This is a pretty dangerous default w.r.t. filesystem integrity on power
>>  loss, no?
> 
> From reading the documentation, I was under the impression that write
> barriers don't always do what they're supposed to do.

Which documentation?

Thanks,
-Eric
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