Re: Lost file-system story

[Donald Allen <donaldcallen%gmail.com@localhost>]

On Sun, Dec 11, 2011 at 11:04 AM, Joerg Sonnenberger
<joerg%britannica.bec.de@localhost> wrote:
> On Sun, Dec 11, 2011 at 10:50:29AM -0500, Donald Allen wrote:
>> I repeated the test without the sync, but waited 15 minutes after
>> creating the new file before killing the power. When the system came
>> up, I got fsck errors that were fixed, and the new file I created 15
>> minutes before pulling the plug was not present. Whether this is
>> intentional or a bug, I agree with David Holland -- it's wrong and
>> should be fixed.
>
> I disagree. It is exactly why I use FFS with -o async -- to get a disk
> backed storage, that doesn't waste resources, if everything fits into
> memory, but falls gracefully otherwise.

Certainly a valid requirement, but we haven't talked about what the
fix should be. I think it should have an adjustable sync frequency, so
that the user can turn a knob from "I want to lose as little as
possible" to "I want maximum performance". If I get my wish, you can
use the latter, which should set the frequency to zero.

/Don

>
> Joerg