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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/5128 Servers

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29 May 2023
@winterqt:nixos.devWinter (she/her)as after flushing, i always get the same lease01:46:43
@winterqt:nixos.devWinter (she/her) * as after flushing in stage2, i always get the same lease01:46:55
@uep:matrix.org@uep:matrix.org(since I assumed it was some unconfigured, dynamic hostname)01:46:46
@uep:matrix.org@uep:matrix.orgperhaps some sniffing of requests is in order, assuming getting to the bottom of the issue is sufficiently interesting01:47:55
@winterqt:nixos.devWinter (she/her)
In reply to @uep:matrix.org
(since I assumed it was some unconfigured, dynamic hostname)
fun news: it's also a completely random MAC address??
18:06:12
@winterqt:nixos.devWinter (she/her)i don't think that's default networkd behavior...?18:07:11
@winterqt:nixos.devWinter (she/her)nope: https://github.com/systemd/systemd/blob/e30b4c13570a5e4ec794d480d5371e9c739570d9/network/99-default.link#L1718:07:46
@winterqt:nixos.devWinter (she/her) cc ElvishJerricco -- happy to debug this, but not sure how :) everything looks okay from the configuration's end. 18:08:30
@elvishjerricco:matrix.org@elvishjerricco:matrix.org

Winter (she/her):

MACAddressPolicy=

persistent

If the hardware has a persistent MAC address, as most hardware should, and if it is used by the kernel, nothing is done. Otherwise, a new MAC address is generated which is guaranteed to be the same on every boot for the given machine and the given device, but which is otherwise random. This feature depends on ID_NET_NAME_* properties to exist for the link. On hardware where these properties are not set, the generation of a persistent MAC address will fail.

18:20:26
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgSo if the hardware doesn't have a persistent MAC address, then udev probably generates a MAC address based on stuff like the machine-id or something, which we don't currently add to the initrd18:21:11
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgso without a machine-id, I bet it becomes random18:21:19
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgbut18:21:21
@elvishjerricco:matrix.org@elvishjerricco:matrix.org My impression is that it's very odd if your hardware doesn't have a persistent MAC address 18:21:36
@elvishjerricco:matrix.org@elvishjerricco:matrix.org so it should just be using that 18:21:41
@winterqt:nixos.devWinter (she/her)
In reply to @elvishjerricco:matrix.org
My impression is that it's very odd if your hardware doesn't have a persistent MAC address
it almost definitely does, yeah.
18:26:18
@winterqt:nixos.devWinter (she/her)
In reply to @elvishjerricco:matrix.org
My impression is that it's very odd if your hardware doesn't have a persistent MAC address
* it almost definitely does have one, yeah.
18:26:43
@winterqt:nixos.devWinter (she/her)especially since udhcpc uses a persistent one18:27:19
@winterqt:nixos.devWinter (she/her)is this worth opening an issue about, so at least it's recorded?18:31:22
@winterqt:nixos.devWinter (she/her)can't think of what the issue would be configuration-wise.18:31:29
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgProbably18:31:56
@elvishjerricco:matrix.org@elvishjerricco:matrix.orgwe should probably try to create a nixos test to reproduce the problem18:32:34
@uep:matrix.org@uep:matrix.org"and if it is used by the kernel" seems like one possible path of investigation22:26:15
31 May 2023
@copadium:matrix.orgCopa Dium joined the room.10:43:23
@copadium:matrix.orgCopa DiumI'm not sure what I'm doing wrong, but since I switched to initrd.systemd.enable I don't get a password prompt when using ZFS on luks. The service is just waiting for 1m30 and then I get an emergency shell. Is there something I have to configure manually?10:45:34
@lily:lily.flowers@lily:lily.flowers
In reply to @copadium:matrix.org
I'm not sure what I'm doing wrong, but since I switched to initrd.systemd.enable I don't get a password prompt when using ZFS on luks. The service is just waiting for 1m30 and then I get an emergency shell. Is there something I have to configure manually?
How did you configure luks? Is your config publicly available on github or anything?
10:46:46
@lily:lily.flowers@lily:lily.flowers (It should figure it out from the boot.initrd.luks settings, or whatever they are called) 10:47:04
@copadium:matrix.orgCopa DiumIt's not public but I used disko to configure it.10:47:07
@lily:lily.flowers@lily:lily.flowersI meant nixos config for luks10:47:26
@copadium:matrix.orgCopa DiumYeah disko does that too, my boot.initrd.luks is defined10:48:24
@copadium:matrix.orgCopa DiumSystemd also has a job waiting on the device, but there just is no prompt10:48:46

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