On Tue, Nov 5, 2013 at 4:25 PM, m.roth@5-cent.us wrote:
Yeah, I know, we're trying to move stuff around, that's not infrequent, given the amount of data my folks generate.
And that's the other place that backuppc will help. If you move a file that is already in an existing backup, backuppc's rsync will copy it over the network because it doesn't have a match in that location, but when it goes to add the compressed copy to the pool it will notice that there is already a file with identical content there and use a hardlink instead of needing additional space.
Um, but rsync will already do that.
No, rsync itself will only do it when the identical file is still in the identical path from the identical host.
Anyway, when I mean move things, I meant whole backups to a less-full drive, or the much rarer times that we need to move a user who's using a *large* amount of space.
Backuppc will match up identical content, no matter where it finds it. If it is a different copy or moved to a different location it does have to transfer it to the backuppc server, but then it will be discarded and replaced with a link to the existing pooled copy.