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You seem to not understand what rsync does. Rsync by design only compares metadata and only of the metadata tells it that there has probably been a change in the files, it will actually do something with the file data.

Ruben Kelevra
– Ruben Kelevra

2024-07-05 23:16:34 +00:00
Commented Jul 5, 2024 at 23:16
1

You are only partially correct. rsymc can be used to compare data as well as metadata. In network usage, the default is metadata compare only whereas in local mode it i will compare data blocks. This data block comparison can be great when you have a large file to update with only small number of blocks having changed. The point though was that metadata performance may itself be a significant bottleneck. As I mentioned, rsymc and cp -u can both become metadata bound. This is why file size distribution matters so much to file system performance.

ckg
– ckg

2024-07-07 07:47:59 +00:00
Commented Jul 7, 2024 at 7:47
@RubenKelevra So say two files (on source and destination) have the same name, same last edit date and the same size. Rsync wouldn't copy the source file, but a situation is possible when that file was changed in such a way that the size and date remained the same?

parsecer
– parsecer

2024-07-29 12:57:33 +00:00
Commented Jul 29, 2024 at 12:57

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