Swap, ZRAM, Zswap and Hibernate on NixOS (blog.matthewbrunelle.com)

16 points by speckx 4 hours ago

gucci-on-fleek an hour ago

I agree with everything else here, but swap files on btrfs should probably be avoided whenever possible [0].

[0]: https://btrfs.readthedocs.io/en/latest/Swapfile.html

ciferkey 27 minutes ago

Right, you are good to do swap files on btrfs since linux 5.0 or so as long as you follow some rules. Disko thankfully covers all those details for you, but I shouldn't have skipped over that in the piece. I'll make an update when I get a chance.

eccgecko an hour ago

Thanks for this. So weird though - I literally spent the better part of the weekend reading and learning all about the differences between zram and zswap and ultimately deciding to switch out my previous zram config for zswap on my NixOS system! So seeing this pop up on my hackernews feed felt a bit spooky…