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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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18 Apr 2023
@nikstur:matrix.org@nikstur:matrix.orgBut it finds config files in the sysroot. How can it find config files in the sysroot if it is not mounted?22:04:41
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgthat's a good question :P I'm not sure why they have code that checks that unless it's just for robustness22:05:21
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgbut given that poettering himself has told me that repart is meant to be used for partitioning the root disk, I'm heavily inclined to believe that's what it's for in initrd22:06:13
@nikstur:matrix.org@nikstur:matrix.orgI'm like 90% certain that it works on a mounted sysroot but maybe I'm also losing my mind.22:06:37
@elvishjerricco:matrix.org@elvishjerricco:matrix.org * but given that poettering himself has told me that repart is meant to be used for partitioning/formatting the root disk, I'm heavily inclined to believe that's what it's for in initrd22:06:40
@nikstur:matrix.org@nikstur:matrix.org
In reply to @elvishjerricco:matrix.org
but given that poettering himself has told me that repart is meant to be used for partitioning/formatting the root disk, I'm heavily inclined to believe that's what it's for in initrd
It definetely is. There is no contradiction. It can just do more than that
22:06:58
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgI mean it very well might, even if that's just additional functionality22:07:06
@elvishjerricco:matrix.org@elvishjerricco:matrix.org but the point remains that it's clearly incorrect to mount /sysroot before running repart 22:07:35
@nikstur:matrix.org@nikstur:matrix.orgThis is not at all clear to me22:08:19
@elvishjerricco:matrix.org@elvishjerricco:matrix.org
In reply to @elvishjerricco:matrix.org
but given that poettering himself has told me that repart is meant to be used for partitioning/formatting the root disk, I'm heavily inclined to believe that's what it's for in initrd
^
22:08:35
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgseems pretty clear from that22:08:40
@nikstur:matrix.org@nikstur:matrix.orgMaybe this helps to clear up this misunderstanding: systemd-repart can also work on a mounted filesystem. You can call systemd-repart right now and it will alter the partition table of your running system.22:19:22
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgI don't see how that affects anything, except proving that more can be done in stage 2 instead22:21:55
@elvishjerricco:matrix.org@elvishjerricco:matrix.org From a practical perspective, I see (almost) no reason to use systemd-repart in initrd unless you're doing things that have to happen before /syroot is mounted 22:22:48
@elvishjerricco:matrix.org@elvishjerricco:matrix.org * From a practical perspective, I see (almost) no reason to use systemd-repart in initrd unless you're doing things that have to happen before /sysroot is mounted 22:23:31
@nikstur:matrix.org@nikstur:matrix.orgFrom reading the systemd issue you posted, I understand why you are frustrated with the current implementation of the module because this exact use case Lennart describes as a solution to your problem is not (yet) available.22:28:30
@elvishjerricco:matrix.org@elvishjerricco:matrix.org Sorry, no, the current implementation just doesn't make sense to me. If it can be done after /sysroot is mounted, there's like a 95% chance it can be done in stage 2 instead. But there are plenty of reasonable use cases that must come before /syroot is mounted. The time in between, when /sysroot is mounted and we haven't transitioned to stage 2, is the most unlikely time for systemd-repart to be useful 22:33:04
@nikstur:matrix.org@nikstur:matrix.org So let's make this concrete: What do you propose? Currently you can (1) use systemd-repart in stage 1 after the sysroot is mounted and (2) you can use it in stage 2. Do you want to get rid of (1) and replace it entirely with baking the configs into the initrd or do you want to add the ability to bake the configs in the initrd as a third option? 22:37:51
@elvishjerricco:matrix.org@elvishjerricco:matrix.org I would argue that if systemd-repart is in initrd, the config files should be as well, so ordering after sysroot.mount would be incorrect. 22:39:41
@elvishjerricco:matrix.org@elvishjerricco:matrix.org Having systemd-repart in stage 1 but needing /sysroot to already be mounted seems like an esoteric situation to me 22:40:21
20 Apr 2023
@shawn8901:matrix.org@shawn8901:matrix.org joined the room.17:22:13
@elvishjerricco:matrix.org@elvishjerricco:matrix.org

What else is left for these to be merged? flokli?

  • https://github.com/NixOS/nixpkgs/pull/226237
  • https://github.com/NixOS/nixpkgs/pull/169116
20:16:27
21 Apr 2023
@jkarlson:kapsi.fi@jkarlson:kapsi.fiis there a systemd channel?11:32:04
@andreas.schraegle:helsinki-systems.de@andreas.schraegle:helsinki-systems.de #systemd:nixos.org? 11:32:19
@jkarlson:kapsi.fi@jkarlson:kapsi.fithanks11:33:21
@hexa:lossy.network@hexa:lossy.networkmerged! 😄16:46:57
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgWhoo!16:47:14
@flokli:matrix.orgflokli
In reply to @elvishjerricco:matrix.org

What else is left for these to be merged? flokli?

  • https://github.com/NixOS/nixpkgs/pull/226237
  • https://github.com/NixOS/nixpkgs/pull/169116
I just hit the big green button on the networkd - figured we should also get that in, and not block it on the other one to be merged. Thanks for the work :-)
16:49:29
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgYea I left a comment on the other one that now there's a couple of things to do before merging it relating to networking :P16:50:33
@hexa:lossy.network@hexa:lossy.networkyes, it was one of the things I really wanted in 23.05 😄16:50:43

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