Change pack size on existing repository

[ElgatoBavaria]

Hi guys, is it possible to change the pack size of snapshots in an existing repository ? I already tried rebuild-index --compression=max --pack-size=128 --read-all-packs
but it does not work. Has anybody an idea if it´s possible ? If yes, how ?

I already know that it´s possible to mix snapshots with different pack sizes as @MichaelEischer wrote in another post. So for future snapshots i can adapt it.

Best regards

[kapitainsky]

Here is the answer:

Snapshot copy and corrupted data recovery

It’s possible to repack too small pack files using restic prune --repack-small --pack-size size. Using copy to move all data to a new repository is also possible, as copy transfers the data blobs contained in pack files, but not the pack files themselves. This leads to the construction of new packs, with the specified pack size. See https://github.com/restic/restic/pull/3731#issuecomment-1207189014 . It’s somewhat randomly chosen, increasing the maximum further should be possible, but will req…

[ElgatoBavaria]

@kapitainsky I will give it a try. It´s already running 20h for now