Use latest protocol for snapshot streams

[candide-guevara]

Problem

btrfs-send can encode streams using different protocols. Which one should I choose for ensuring longevity?

Solution

• Use --proto=0 to use the latest version (depends on running linux and btrfs-progs versions).
  • Overtime the protocol will change. btrfs-receive should understand old protocols but the best strategy is to create a new snapshot sequence every few years to remove dependence on old protocols?

Note: option --compressed-data is useless since it applies only if the btrfs filesystem uses transparent compression of files. It does not influence whether btrfs-send will compress the stream.

[candide-guevara]

done

[candide-guevara]

This got f*cked by a kernel upgrade and https://github.com/kdave/btrfs-progs/commit/bb7db09e466f300b0bc52c34114663b5e967b4b3 ?

Check again after kernel 6.1 and btrfs-prog 6.5