doing an rsync from a proxmox backup mount location

simonatack

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Nov 29, 2021
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All,

I have a not very happy server at a remote site that is backed up via proxmox backup client which backs up email. Due to server issues I am rebuilding from backups on a new machine. I have noticed that proxmox backup is amongst the quickist thing to scan the email directories and backup any new messages (provider is trying to get things working and the server has come up a few times receiving emails etc and i suspect may do so again).

What I want to do is do a new proxmox backup that will quickly backup any changes, then I want to mount on the new server this backup via mount and compare the new backup to the previous restored backup and copy any new files out. I had been looking at rsync but a very basic rsync from the restore backup files compared to mounting the backup they came from seems to indicate that rsync wants to copy lots of files (not sure what is different), in addition the ls etc of the fuse mount is not that quick and seems to do quite a lot of chunk transfers from the proxmox backup server

Has anyone done this before (or know a better way- as the backup client wont restore if files/directories already exist), if so what options did you use for rsync?
 
you could setup PBS on your new server and run a sync job - that will only transfer the chunks representing the incremental delta between snapshots, after it has initially synced up..