linux-ext4 - Re: barriers off by default?

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Message-ID: <72c5d9a0805121030y709de9cehc01df8aeb5b1b8d3@mail.gmail.com>
Date:	Mon, 12 May 2008 11:30:03 -0600
From:	"Eric A" <erpo41@...il.com>
To:	"Eric Sandeen" <sandeen@...hat.com>
Cc:	"ext4 development" <linux-ext4@...r.kernel.org>
Subject: Re: barriers off by default?

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.

Cheers,
Eric
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