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I consider using rsnapshot for backuping large amount of data and I wonder how rsnapshot manage when a folder at the source is moved or rename, is it detected it and edit associated hard links or it creates "duplicate" of all the files tree under?

Sébastien Beausoleil
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If the source folder is renamed/moved, rsnapshot (or rsync) does not detect the change. In other words, the renamed directory will be re-copied without hardlinks. To avoid that, if/when you know a big source directory has been renamed, you should do the same on the latest backup directory (ie: inside daily.0).

shodanshok
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  • Ok, thanks. But if I noticed the renaming a couple backup after, in the daily.0, wouldn't the folder with its "old name" not be shown cause it do not exists anymore in the source? – Sébastien Beausoleil Feb 13 '20 at 15:34
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    Let's say a backupped dir was renamed from `oldname/` to `newname/`. If you want to avoid data duplication at the next backup run, you had to `cd daily.0/` and `mv oldname/ newname/`. You need to do that **before** the next backup run. – shodanshok Feb 13 '20 at 20:38