Subject: Re: FFS journal
To: Jason Thorpe <thorpej@shagadelic.org>
From: Manuel Bouyer <bouyer@antioche.eu.org>
List: tech-kern
Date: 07/05/2006 21:01:15
On Wed, Jul 05, 2006 at 11:52:01AM -0700, Jason Thorpe wrote:
> 
> On Jul 5, 2006, at 11:48 AM, Manuel Bouyer wrote:
> 
> >If I mount a filesystem read-only I don't want anything to write to
> >disk, dammit ! not even journal recovery.
> >
> >>You need a way to replay in-core with an on-disk
> >>journal and on-disk-inconsistent metadata...
> >
> >I'm not sure, as long as we keep the property that metadata writes
> >are done in an ordered way.
> 
> You absolutely MUST do this!  How else do you mount the root fs read- 
> only at start-up?

How can we mont it read-only right now ?

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--