[Bug 10532] Rsync fails with older version.

samba-bugs at samba.org samba-bugs at samba.org
Tue Apr 29 11:13:14 MDT 2014


--- Comment #4 from Wayne Davison <wayned at samba.org> 2014-04-29 17:13:13 UTC ---
Rsync 2.3.2 refuses to interact with protocol 31.  If you wish to tweak 2.3.2
to not be so draconian, please be my guest, but you'd be better off upgrading
the hugely ancient rsync instead.

There's nothing that a modern rsync can do about the refusal of an old rsync to
interact with it since it must advertise its maximum protocol (and it doesn't
know how old the server is beforehand).  More modern rsyncs are more forgiving
about allowing later versions, but only up to protocol 40 at present.  It would
be nice to remove the max-protocol check altogether, but the check was added to
try to figure out when it received some ascii garbage instead of a valid
protocol value, so we need a better "I got garbage" check (which should really
have been implemented in a better manner from the start).

So, if you run into an old rsync and you can't upgrade it, just remember to use
--version=30 to work around its deficiency.

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