Tx for your response, but I am not interested on such reading :-) My concussion is rsync must be used with more care than necessary
jw schultz wrote:
On Sun, Dec 28, 2003 at 09:50:37AM +0100, Manuel Mollar wrote:
Hi,
Sorry if this is well known.
Suposse I am transferring a large (by now) file, say 1Gbyte with --partial:
rsync -e ssh -a --partial 1gbfile server:
If process is interrumpted, temporary file is renamed to good filename with size samall than original, say 400Mbyte, ok.
If from client I do again the same command, then, in server the 400Mbyte file is COPIED to another temporary file, but this take some time.
I from client I press crtl-C when in server temporary file is not already copied, say is 200 Mbyte, temporary file overwrites the 400Mbyte file, losing a lot of data.
Why do no symple rename partial file to temporry file, instead of COPYING?
(Copying generates obvious additional problems where disk space is short).
Rsync has absolutely, positively no way to know it is that the destination file is an exact copy of the beginning of the source nor is it able to update-in-place.
This has much less to do with --partial than with the rsync algorithm. You may want to read my "how rsync works" document.
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