xfsdump questions

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Hello!

Is xfsdump an ancient relic or something recommended to new users (I
have never seen anyone recommending it)? I gave it a try and found the
incremental backups to be really fast!

How are incremental backups implemented? I saw that my inventory file
is really small. Does it use some internal xfs metadata to detect
changes? Is it resilient against all kinda renames and changing
timestamps etc that a user might do? (I've previously used a backup
system that broke when doing stuff like that)

Is it possible to backup (and restore) ctimes?

I read that the incremental backups are limited to a depth of 10. Are
they intended to be used in a binary tree like fashion?

--
Stevie Trujillo

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