additional linking of files to their HASH values
paul at debian.org
Fri Dec 3 11:57:27 GMT 2004
On Fri 03 Dec 2004, Helge Jensen wrote:
> In order to reduce the space used for each backup, I was thinking about
> linking all files in the backups to their hash in a separate directory,
> allowing only one storage of each file-value, reducing my backup-needs
> with ~5Gb per machince.
> Further this would allow rysnc to represent moved files without any
> space-usage at all, for example rotated backups and user-moved files fit
> this description.
Yes, this would be a great addition!
Of course, you would also need to add to the hash meta data such as
owner / group / file modes...
> I realize, that there may be problems with file-system performance on
> such large directories, but that could probably be workarounded by using
> some prefix-subdirs.
Yes, 2-4 levels should be sufficient for most, I wonder whether it would
be worth it to make this configurable.
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