Any Mac folks out there able to comment? When I back up from a Mac to a
Linux machine with the -X flag, what Mac-specific file info is retained
or lost? Also, will I fare better using 2.6.3 and the -E flag or 3.0.2
and the -X flag in that scenario?
Thanks again,
--Dave
Matt McCutchen wrote:
On Fri, 2008-06-20 at 10:32 -0700, David Feldman wrote:
You won't be able to preserve file flags and creation times since Linux
doesn't have them. On the other hand, rsync 3.0.2 with -X will preserve
getxattr-style extended attributes (including resource forks, which Mac
OS 10.4+ exposes as extended attributes); no patches are needed.
Thanks. Just to make sure I understand: I can compile a stock rsync
3.0.2 on the Linux box - no patches at all - and it will preserve all
the Mac-specific data with -X, except for file flags and creation times?
Is that correct?
Not really. -X preserves extended attributes via the getxattr/setxattr
interface and does not cater specifically to the Mac. However, the Mac
filesystem exposes some kinds of Mac metadata as extended attributes, so
-X will preserve these. I know that resource forks are preserved this
way, but more esoteric pieces of Mac metadata might not be. Your best
bet is to do a test and see if the metadata you need is preserved.
Also: what are file flags? Stuff like access control and locked?
Anything else?
I know they include the Finder "Locked" flag. They may include other
things, but I'm pretty sure they don't include Mac ACLs.
You may be able to get better information from a Mac person. (I don't
have a Mac.)
Matt
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