Re: [linux-lvm] Some ideas regarding snapshots (was: Reiserfs, 2.4.7, snapshots w/ 0.9)

[Joe Thornber <thornber btconnect com>]

On Thu, Jul 26, 2001 at 01:55:14PM +0200, Wolfgang Weisselberg wrote:
> Iain Campbell (iain sandon ca) wrote 64 lines:
> > Quote from Teigland and Mauelshagens's Volume Manager whitepaper:
> 
> > journalled file system. These operations (fsck or journal replay) require 
> > writing to  the snapshot ligical volume, which is not allowed."
> 
> On a related subject: would it be possible to have a writable
> snapshot (probably a 'reverse' snapshot)?

Writeable snapshot's are easy to implement, I believe someone has
already made a patch for the current LVM series (search the list).  I
certainly intend putting it into the experimental LVM branch soon.

- Joe