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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/5126 Servers

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31 May 2023
@elvishjerricco:matrix.org@elvishjerricco:matrix.org *

Ok so three separate problems then:

  1. A mount can timeout waiting for its mapped device
  2. The ZFS import service can timeout
  3. emergency.service can timeout
11:52:25
@copadium:matrix.orgCopa Dium Maybe 4. because I get this emergency.service: Executable /nix/store/jmd50jrn6l2bqqm5dvq6xvripzvr3npc-systemd-stage-1-network-253.3/bin/plymouth missing, skipping: No such file or directory, but I don't have or want plymouth 11:53:39
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgthat's not relevant11:53:50
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgthat's just systemd being silly11:53:57
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgbut it's harmless11:54:03
@copadium:matrix.orgCopa DiumOkay11:54:28
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgok so looking at my system that has zfs on luks: It looks like the zfs import service is starting before we reach cryptsetup.target, which is odd11:54:34
@copadium:matrix.orgCopa DiumAlso are you sure the emergency shell times out? In my journal it looks like there's just a second zfs-import-rpool-start that spawns a second emergency shell when it fails11:55:01
@elvishjerricco:matrix.org@elvishjerricco:matrix.org
In reply to @copadium:matrix.org
Also are you sure the emergency shell times out? In my journal it looks like there's just a second zfs-import-rpool-start that spawns a second emergency shell when it fails
Oh I see. That's weird
11:55:22
@copadium:matrix.orgCopa DiumWould the full log be helpful to you?11:55:56
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgpossibly?11:56:02
@lily:lily.flowers@lily:lily.flowers
In reply to @elvishjerricco:matrix.org
but it's harmless
(Well it's not harmless exactly if you do have plymouth because plymouth crashes instead of gracefully exits when entering emergency shell right now. I have a branch with a two line fix though..... just need to find time in the next week for nixpkgs work)
11:56:10
@elvishjerricco:matrix.org@elvishjerricco:matrix.org oh that's why that happens? wut 11:56:37
@lily:lily.flowers@lily:lily.flowers(Not that that's fatal or anything. But kinda silly)11:56:45
@lily:lily.flowers@lily:lily.flowers
In reply to @elvishjerricco:matrix.org
oh that's why that happens? wut
Yeah plymouth expects systemd to stop it when entering emergency shell. That seems extraordinarily dumb to have that inter-project dependency. Systemd assumes plymouth is in its install bindir which is also silly
11:57:43
@copadium:matrix.orgCopa DiumAlso interesting is that the ssh daemon is killed when the emergency shell enters, which is weird :D11:58:02
@lily:lily.flowers@lily:lily.flowersMy fix just adds plymouth-quit-wait to be wanted by and before emergency and rescue shells11:58:13
@copadium:matrix.orgCopa DiumDo you have a preferred pastebin like service around here?11:58:26
@lily:lily.flowers@lily:lily.flowers
In reply to @copadium:matrix.org
Do you have a preferred pastebin like service around here?
(One that works and preferably without ads for me. Otherwise I really don't care myself, but I imagine ElvishJerricco is more likely to be looking at them since I'm on mobile and really need to be getting ready to leave for $dayjob)
11:59:25
@elvishjerricco:matrix.org@elvishjerricco:matrix.org
In reply to @copadium:matrix.org
Also interesting is that the ssh daemon is killed when the emergency shell enters, which is weird :D
Yea, I considered adding boot.initrd.systemd.targets.emergency.wants = ["network.target"]; when initrd networking is enabled, but ultimately decided against it. You can totally add that to your config though to keep networking up in an emergency
11:59:48
@elvishjerricco:matrix.org@elvishjerricco:matrix.orger, actually, I guess sshd.service isn't wanted by network.target...12:00:36
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgso that wouldn't actually work12:01:09
@gdamjan:spodeli.org@gdamjan:spodeli.orgyou can add that too :)12:01:47
@copadium:matrix.orgCopa Dium
In reply to @elvishjerricco:matrix.org
possibly?
https://hastebin.skyra.pw/itupozaruc.yaml
12:02:25
@elvishjerricco:matrix.org@elvishjerricco:matrix.org ok so there's initrd-fs.target: Triggering OnFailure= dependencies. three different times 12:03:57
@elvishjerricco:matrix.org@elvishjerricco:matrix.org and finally initrd-switch-root.service: Triggering OnFailure= dependencies. once 12:04:09

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