Rsync: unexpected tag -7
by Carl Farrington on Jan.13, 2009, under Tips & Tricks
I encountered this problem when trying to back up a SCO OpenServer 5.0.5 box to a Windows XP machine using Rsync 3.0.5 on the SCO box and cwRsync (3.0.5) on the Windows machine.
Having tried all sorts, I eventually changed the Windows side to using the rsync 3.0.4 that comes with Deltacopy instead of using cwRsync.
I then ran into a different problem: “Integer overflow – attempted 64 bit offset
rsync error: requested action not supported (code 4) at ../io.c(381)”
This seems to have gone away after I returned to rsyncing the whole filesystem rather than just a subdirectory.