[duskwuff]

netatalk is also the wrong solution nowadays. AFP is unmaintained, both on the netatalk side and on macOS. Instead, Samba supports Time Machine backups via the "fruit" (!) extension, which also provides some nice performance improvements for macOS clients.

https://manpages.debian.org/buster/samba-vfs-modules/vfs_fru...

TL;DR though: add the following configuration to the global section of your smb.conf:

    vfs objects = fruit streams_xattr
    fruit:aapl = yes
    fruit:metadata = netatalk

And under the section for your Time Machine share:

    fruit:time machine = yes

[nikisweeting]

SMB on ZFS also works excellently, 4 years and counting with many power losses, ungraceful ejections, etc. never a corrupted backup.