[Borgbackup] Central backup and ~/.cache/borg/ piling up

[Hans-Peter Jansen]

Hi,

borg is doing a fantastic job here since two month¹, but when doing a central 
backup of a couple of small and not so small systems and taking advantage of 
full deduplication, ~/.cache/borg piles up and will blow up limits eventually.
Here, ~/.cache/borg is at 21GB now. Had to reconfigure some systems to cope 
this this already.

borg create has --no-files-cache and --no-cache-sync flags.

If I understand correctly, that will result in a lot more network traffic, 
since file modification determination has to happen on the server, then.

Since --no-cache-sync is marked experimental, I want to ask, what other 
downsides one can expect, and what experiences others have had using these 
flags, or otherwise tackling the issue in question.

Thanks,
Pete

¹) Latest stats:
------------------------------------------------------------------------------
                       Original size      Compressed size    Deduplicated size
This archive:              125.78 GB            112.63 GB             43.12 MB
All archives:              144.81 TB            112.34 TB              6.46 TB

                       Unique chunks         Total chunks
Chunk index:                31886048            499329985
------------------------------------------------------------------------------