Re: [ANNOUNCE] Ramback: faster than a speeding bullet

From: Alan Cox
Date: Thu Mar 13 2008 - 09:44:31 EST


On Wed, 12 Mar 2008 22:14:16 -0800
Daniel Phillips <phillips@xxxxxxxxx> wrote:

> On Wednesday 12 March 2008 22:39, David Newall wrote:
> > Daniel Phillips wrote:
> > > Particularly about Ext2/Ext3, which does recover well from random damage.
> > > My experience.
> >
> > By "recover well", you must mean "loses massive swabs of data, leaving
> > the system unbootable and with enormous numbers of user files missing."
> > My experience.
> >
> > Expecting fsck to cover for missed writes is stupid.
>
> Whatever it can get off the disk it gets. It does a good job. If you
> don't think so, then don't tell me, tell Ted.

He knows. Ext3 cannot recover well from massive loss of intermediate
writes. It isn't a normal failure mode and there isn't sufficient fs
metadata robustness for this. A log structured backing store would deal
with that but all you apparently want to do is scream FUD at anyone who
doesn't agree with you.

Alan
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