Linux

47950 readers

1841 users here now

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
No misinformation
No NSFW content
No hate speech, bigotry, etc

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 5 years ago

MODERATORS

[email protected]

ZFS Swap on Linux (lemmy.world)

submitted 10 months ago by [email protected] to c/[email protected]

12 comments fedilink hide all child comments

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"

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 6 points 10 months ago* (last edited 10 months ago) (1 children)

ThinkPad P14s AMD Gen 1

Both the laptop and the stock NVMe drive supports Opal2. Not sure about your second drive but if it also supports Opal2, then you should just use that instead of ZFS encryption, since Opal encryption is transparent to the OS, so you won't have any issues with hibernation.

[–] [email protected] 2 points 10 months ago (1 children)

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

[–] [email protected] 2 points 10 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.