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10.5: One way to use Time Machine and a backup server
Authored by: duga on Feb 16, '08 11:04:43AM
I have been trying something similar to this rsync approach and had the same failure (that's how I stumbled on this tip - looking for a solution). I think this is not a viable approach with the current version of rsync shipping in Leopard. The problem is, as the backup grows (in number of files, not total size), rsync will crash. This happens because it is building a list of all the files in the source, which takes about 100 bytes per file (again, actual file size is irrelevant, just the number of files matters). That means the theoretical maximum on files it can sync is just over 42 million. In reality, that number is smaller (closer to 20 million). The newest version (3.0, in pre-release) seems to have a fix for this (--recursive) as well as better xattr and acl support, but it is not (yet) an out-of-the-box solution. I am testing it now to see if it will at least work locally, but it is not quite ready for prime time even if it does.

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