Re: [BackupPC-users] [BackupPC-devel] improving the deduplication ratio
2008-04-16 09:38:06
On Wed, Apr 16, 2008 at 02:30:11PM +0200, Tino Schwarze wrote:
> On Wed, Apr 16, 2008 at 02:20:36PM +0200, Ludovic Drolez wrote:
> > And what about a mix of the two ?
> > - keep hard links for files less than the chunk size (filenames begin
> > with an 'f' as before)
> > - for files bigger than the chunk size, create a regular file which
> > contains references to the chunks in the cpool (the files could begin
> > with an 'r' for example).
>
> The main problem is that you cannot tell anymore whether a file(chunk)
> in the pool is still needed or not. You'd need to look into every backup
> and check if there's still a reference to that chunk.
then, instead of the 'r' file containing the references to the chunks,
simply create a 'r' directory, which will contain hard links to the
chunks, so that cpool chunks are still referenced as before !
Cheers,
--
Ludovic Drolez.
http://www.palmopensource.com - The PalmOS Open Source Portal
http://www.drolez.com - Personal site - Linux, Zaurus and PalmOS stuff
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- [BackupPC-users] improving the deduplication ratio, Ludovic Drolez
- Re: [BackupPC-users] improving the deduplication ratio, Tino Schwarze
- Re: [BackupPC-users] improving the deduplication ratio, Les Mikesell
- Re: [BackupPC-users] improving the deduplication ratio, Michael Barrow
- Re: [BackupPC-users] improving the deduplication ratio, Ludovic Drolez
- Re: [BackupPC-users] improving the deduplication ratio, Tino Schwarze
- Re: [BackupPC-users] improving the deduplication ratio, Michael Barrow
- Re: [BackupPC-users] improving the deduplication ratio, Ludovic Drolez
- Re: [BackupPC-users] [BackupPC-devel] improving the deduplication ratio, Tino Schwarze
- Re: [BackupPC-users] [BackupPC-devel] improving the deduplication ratio,
Ludovic Drolez <=
- Re: [BackupPC-users] [BackupPC-devel] improving the deduplication ratio, Tino Schwarze
- Re: [BackupPC-users] improving the deduplication ratio, Ludovic Drolez
- Re: [BackupPC-users] improving the deduplication ratio, Les Mikesell
- Re: [BackupPC-users] improving the deduplication ratio, Ludovic Drolez
- Re: [BackupPC-users] improving the deduplication ratio, Les Mikesell
Re: [BackupPC-users] improving the deduplication ratio, Kenneth Porter
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