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Stage 1 systemd

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systemd in NixOs's stage 1, replacing the current bash tooling https://github.com/NixOS/nixpkgs/projects/5123 Servers

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22 Apr 2023
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgBut this is not all file systems13:45:48
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgIt's not uncommon to have file systems and disks that only need to be done in stage 213:46:17
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgbut we currently always do luks in stage 113:46:25
@elvishjerricco:matrix.org@elvishjerricco:matrix.org You can do it in stage 2 yourself by configuring /etc/crypttab though 13:46:36
@lily:lily.flowers@lily:lily.flowers
In reply to @elvishjerricco:matrix.org
Hm I thought I tested that one...
https://github.com/NixOS/nixpkgs/blob/9ea57a7a020823ff80dd3afbda037036e7392f21/nixos/modules/tasks/filesystems/zfs.nix#L534-L545
13:46:44
@aktaboot:tchncs.de@aktaboot:tchncs.deokay I see 👍. Also is this stage1/2 thing nixos specific ? I couldn13:46:49
@aktaboot:tchncs.de@aktaboot:tchncs.de* okay I see 👍. Also is this stage1/2 thing nixos specific ? I couldn't find info from other distros13:47:07
@elvishjerricco:matrix.org@elvishjerricco:matrix.org Lily Foster: Yea I see. I just can't figure out why the assertion didn't trigger for me 13:47:21
@elvishjerricco:matrix.org@elvishjerricco:matrix.org Like, I can see the option's value is not the empty string with nix eval 13:47:37
@oddlama:matrix.orgoddlama
In reply to @aktaboot:tchncs.de
okay I see 👍. Also is this stage1/2 thing nixos specific ? I couldn't find info from other distros
no, other distributions just don't call it stage 1 (the initramfs stage) and stage 2 (the actual system stage).
13:50:14
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgYea the systemd docs try to exclusively use the terms "initrd" and "host" for what we prefer to call "stage 1" and "stage 2" respectively13:50:58
@elvishjerricco:matrix.org@elvishjerricco:matrix.orginitramfs is another commonly used name though since it's technically more accurate (no one uses literal ramdisks anymore, which is what rd stood for)13:51:24
@aktaboot:tchncs.de@aktaboot:tchncs.deoh okay so stage2 ends with pivot-root iiuc ?13:52:11
@elvishjerricco:matrix.org@elvishjerricco:matrix.org stage 1 ends with systemctl switch-root (or switch_root in the traditional initrd) 13:52:40
@oddlama:matrix.orgoddlamano stage 1 pivots to stage 213:52:42
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgstage 2 just shuts down when it ends13:52:54
@lily:lily.flowers@lily:lily.flowers
In reply to @elvishjerricco:matrix.org
Lily Foster: Yea I see. I just can't figure out why the assertion didn't trigger for me
Oh, yeah, no clue there
13:53:00
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgi.e. when you power off / reboot13:53:02
@aktaboot:tchncs.de@aktaboot:tchncs.deokay so stage2 is just the normal os stuff :)13:53:09
@aktaboot:tchncs.de@aktaboot:tchncs.dethanks for the clarificatiosn 👍13:53:35
@lily:lily.flowers@lily:lily.flowers
In reply to @elvishjerricco:matrix.org
stage 2 just shuts down when it ends
We could designate the final shutdown ramfs pivot stage-3 (/s)
13:53:39
@aktaboot:tchncs.de@aktaboot:tchncs.de* thanks for the clarifications 👍13:53:40
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgI didn't wanna mention that :P13:53:51
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgbut yep13:53:53
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgwe kinda technically have a stage 313:54:00
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgit's just exceptionally simple13:54:08
@elvishjerricco:matrix.org@elvishjerricco:matrix.org It's just the systemd-shutdown binary going on a merciless killing spree and then eventually dumbly running some executable hooks without any sort of logical ordering 13:54:52

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