From: Herbert Poetzl (herbert_at_13thfloor.at)
Date: Wed 18 Jun 2003 - 16:20:42 BST
On Wed, Jun 18, 2003 at 05:11:17AM +0000, ragnar_at_this.is wrote:
> > anyway, there is something called IMMUTABLE-LINK-INVERSION
> >From - vserver 0.6 changes log
> it looks like this is now part of the ctx patch
> but probably only for ext2
hmm, currently ext2, ext3 and reiserfs are
supported, jfs is broken, rest unknown ...
> Does anyone maintain the modified e2fsprogs package?
> Sam's patch is for version 1.25.
maybe a fs independant solution would be
advantageous ... Sam?
> > it can be used, although it's not copy on write, as you
> > will know now ...
> copy on write would be better, then one could blindly unify
> all files that are the same. If you can work that out, e.g.
> using VFS or something you would make many people happy.
please, before you start implementing it *G*
have a look at http://www.13thfloor.at/TBVFS/
> Interesting comment from
> GCFS: a Garbage-Collected Filesystem for Linux
> This “copy on write” idea is also completely independent
> from the GCFS. I should be asking myself whether it could
> be implemented in a traditional (gc-less) filesystem, but
> every time I try to think about this question,
> my mind seems to go bezerk.
> > > If I knew the APIs, I'd be happy to write such a tool myself.
> You can look at:
> fdupes - install with dselect
> or a perl script fast-dupemerge
hmm, maybe I should release my fsum utility
(this could speed up file hashing)
thanks for the additional infos/links ...
> > there where several proposals, and as far as I remember
> > Sam is actually maintaining (at least from time to time)
> > a tool to unify on debian and similar systems ...
> I found unify-dirs at
> Also interesting to look at User-mode Linux
> -- Sharing Filesystems between Virtual Machines
> -- Host file access