this post was submitted on 13 Dec 2023
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ZFS Swap on Linux (lemmy.world)
submitted 11 months ago by JustineSmithies@lemmy.world to c/linux@lemmy.ml
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One for those running #ZFS on #Linux systems. I realise that you can't have hibernate aka suspend to disk on a swap in the encrypted zpool but if you don't use hibernation then is it OK to use swap using the likes of the command example below to set it up in the encrypted pool?

I should point out that I'm thinking of switching from my current Void Linux luks lvm setup to Void with fully encrypted zpool and zfsbootmenu on my ThinkPad P14s AMD Gen 1which has 16Gb ram that I may upgrade to 40Gb. It also has a 1Tb nvme.

zfs create -V "${v_swap_size}G" -b "$(getconf PAGESIZE)" -o compression=zle -o logbias=throughput -o sync=always -o primarycache=metadata -o secondarycache=none -o com.sun:auto-snapshot=false "$v_rpool_name/swap"

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[–] pastermil@sh.itjust.works 1 points 11 months ago (1 children)

Call me a slowpoke, but I've just learned about Opal2. Would this work with LUKS2 and other OS encryption?

[–] d3Xt3r@lemmy.nz 1 points 11 months ago

Yes, but the whole point of using Opal2 encryption is that you don't need to use OS-level FDE/filesystem encryption, thus simplifying your set up.

Of course, you can still use them if you want to though.