On 30 Mar 2013, at 18:23, Arno Hautala <[email protected]> wrote:

> Further, TimeMachine does need to delete the actual files to free up
> more space. My guess is that it's quick because many of the items to
> delete will be hard linked directories, which should dramatically
> bring down the number of files to delete. rsync can only hard link
> files, so there's going to be much more to remove.

I wondered about the hard linked directories, but couldn't imagine how that got 
past the need to unlink thousands of files. Is there some interesting algorithm 
in there?


> Now I just rsync directly to the backup
> location (running on FreeNAS) and rely on ZFS snapshots to quickly
> make and prune old backups.

Oh, cool.

Should I look at MacZFS?


Stefano


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