Rsync not updating timestamp


04-Sep-2020 17:11

Bidirectional synchronization means two (or sometime more) locations are all working copies, and changes in any one should become current in the other(s).

Which can cause more sorts of conflicts, as you can imagine.

In other words, it selects a file for transfer when it has changed size, and/or a changed last-modified time.

This is usually good behaviour, skipping files (and saving IO on) that haven't been touched, and only really assumes that timestamps are always written/updated on the destination.

In some cases you may want automatic resolving policies (such as "throw away all data but the one that says it's the newest"), in other cases you may to deal with conflicts interactively (in the interest of not losing data, so even if it's a tedious process).

Bandwidth (and read/write speed) is typically scarcer than storage size, so for many use cases there is quite a bit you can save by sending only differences.

rsync not updating timestamp-4

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There are other potential problem cases, such as multiple copies saying they have a variant of the data.This is less true these days; rsync comes from a time when network speed was much lower than disk speed.Which is also why it disables the rolling-hash thing on local transfers (and becomes a fairly dumb copier) - it's rarely ever worth it.It also implies that rsync can effectively continue broken-off transfers.



Jan 23, 2017. Using the --update flag to rsync makes it “skip files that are newer on the receiver”. It seems. which led me to think that things are not working as they should. When comparing two timestamps, rsync treats the timestamps as… continue reading »


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Feb 25, 2014. Firstly, rsync is not new it's been around for quite a while and chances are you've. The rsync remote-update protocol allows rsync to transfer just the. preserve everything about the file such as timestamps and permissions.… continue reading »


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Oct 13, 2009. How does rsync make its decisions. file directly when the quick check indicates that the file's data does not need to be updated. will skip any files that are already the same size and have the same modification timestamp.… continue reading »


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Jan 9, 2017. I recently needed to use rsync to only copy over files that did not already. that have a newer timestamp on the local server are copied over.… continue reading »


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Note that the connection for these must not need a password as rsync itself is making the. The synchronize module forces –delay-updates to avoid leaving a.… continue reading »


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Dec 31, 2009. --modify-window When comparing two timestamps, rsync treats the. With --no-implied-dirs, the receiving rsync updates "path/foo/file" using.… continue reading »


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