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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/5127 Servers

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20 Oct 2022
@colemickens:matrix.orgcolemickensI think that's why I was confused, yes. I was getting the warning for all of my hosts, when I only opt into intird networking on a couple.07:45:32
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgoh wait wut07:46:29
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgthe warning should definitely not show up if you don't have networking enabled in initrd, even in the current iteration07:47:04
* @colemickens:matrix.orgcolemickens better just use nix eval to confirm07:47:34
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgoh i may have goofed and made the warning show up when initrd networking is disabled...07:48:36
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgyea I did the goof07:50:03
@elvishjerricco:matrix.org@elvishjerricco:matrix.org just need an && <stuff> in the mkIf for the warning and assertion 07:50:24
@colemickens:matrix.orgcolemickensI'll repull the pr in a bit. Thanks!07:50:58
@elvishjerricco:matrix.org@elvishjerricco:matrix.org Ah, actually the current commit is wrong. The scripted initrd doesn't try to configure any interfaces if none are configured and networking.useDHCP = false;, whereas the commit currently defaults to the equivalent of networking.useDHCP = true; when there are no configured interfaces. 08:03:45
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgAnd the warning needs to go anyway, because this can be configured on the cmdline08:03:59
@elvishjerricco:matrix.org@elvishjerricco:matrix.org alright there we go. The auto configuration is only done if boot.initrd.network.enable, rather than boot.initrd.systemd.network.enable, meaning the latter gives you full control. And the warning about no networks being configured is gone, because scripted initrd also allowed you to not configure any interfaces, and you can configure them with the cmdline anyway 08:22:25
22 Oct 2022
@elvishjerricco:matrix.org@elvishjerricco:matrix.org

https://github.com/systemd/systemd/releases/tag/v252-rc2

    * Various units are now correctly ordered against
      initrd-switch-root.target where previously a conflict without
      ordering was configured. A stop job for those units would be queued,
      but without the ordering it could be executed only after
      initrd-switch-root.service, leading to units not being restarted in
      the host system as expected.

I wish they linked the PR that did this. I'd like to see what exactly changed

17:41:14
@janne.hess:helsinki-systems.de@janne.hess:helsinki-systems.de ElvishJerricco: ma27 told me about this today: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/system/boot/stage-1.nix#L153 17:43:47
@janne.hess:helsinki-systems.de@janne.hess:helsinki-systems.dedo we need to adapt that?17:43:53
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgI don't think so17:45:14
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgwe don't nuke the rpath17:45:17
@elvishjerricco:matrix.org@elvishjerricco:matrix.organd glibc is in its original path in the initrd17:45:29
@janne.hess:helsinki-systems.de@janne.hess:helsinki-systems.deah that might work around that, yeah17:45:52
@elvishjerricco:matrix.org@elvishjerricco:matrix.org as long as something is causing libpthread to be pulled in 17:46:06
@janne.hess:helsinki-systems.de@janne.hess:helsinki-systems.defeels a bit unreliable :D17:46:25
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgyea maybe we can add that to storePaths as an assurance17:46:36
@elvishjerricco:matrix.org@elvishjerricco:matrix.org
In reply to @elvishjerricco:matrix.org

https://github.com/systemd/systemd/releases/tag/v252-rc2

    * Various units are now correctly ordered against
      initrd-switch-root.target where previously a conflict without
      ordering was configured. A stop job for those units would be queued,
      but without the ordering it could be executed only after
      initrd-switch-root.service, leading to units not being restarted in
      the host system as expected.

I wish they linked the PR that did this. I'd like to see what exactly changed

Ah, think I found it: https://github.com/systemd/systemd/pull/24670
17:48:12
@janne.hess:helsinki-systems.de@janne.hess:helsinki-systems.deseems related but is unmerged: https://github.com/systemd/systemd/pull/2468017:51:22
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgI really wish systemd PRs contained some kind of explanation for wtf it's doing. They seem to almost always have zero context17:52:02
@janne.hess:helsinki-systems.de@janne.hess:helsinki-systems.dewell I see the same thing in nixpkgs more often than I would hope ;)17:53:20
@elvishjerricco:matrix.org@elvishjerricco:matrix.orghttps://github.com/systemd/systemd/pull/24670/files#r972921587 This is... useful, if strange, information.17:54:30
@elvishjerricco:matrix.org@elvishjerricco:matrix.org Apparently when one thing would be stopped at the same time as the other would be started, the only way to influence the ordering of those things is to have any ordering between them, which always means the stop happens first 17:55:40
@elvishjerricco:matrix.org@elvishjerricco:matrix.org Looks like they missed at least a couple units; like systemd-networkd.service. But then again I don't think anyone actually expects people to use networkd in initrd yet :P 17:59:00
@elvishjerricco:matrix.org@elvishjerricco:matrix.org

At shutdown, systemd will now log about processes blocking unmounting of file systems.

Oh sweet. I could actually really use this

18:03:11
@andreas.schraegle:helsinki-systems.de@andreas.schraegle:helsinki-systems.de
In reply to @elvishjerricco:matrix.org

At shutdown, systemd will now log about processes blocking unmounting of file systems.

Oh sweet. I could actually really use this

finally, after all these years
22:12:04

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