Re: What is z3fold and do I need it? (error: /usr/sbin/mkinitramfs: 12: /etc/initramfs-tools/conf.d/local.conf: z3fold: not found)

[Dekks Herton]

z3fold a choice for zsap compressor module, normally if your seeing a
problem you need to add z3fold to initramfs modules file and rebuild.

see 
https://baronhk.wordpress.com/2021/10/03/setting-up-zswap-in-debian-11-gnu-linux/