MESSAGE
| DATE | 2020-12-02 |
| FROM | Yunxiang Li via artix-general
|
| SUBJECT | Re: [Hangout - NYLXS] [artix-general] Fixes for dbus-s6
|
> The dbus-uuidgen page says:
> > The important properties of the machine UUID are that 1) it remains
> unchanged until the next reboot
> https://dbus.freedesktop.org/doc/dbus-uuidgen.1.html
>
> So it should be fine for it to change on every reboot. I'm not sure what
> pulseaudio setting exactly expects the UUID to always be the same, but
> that doesn't sound like correct behavior. Technically, the script as it
> is will always overwrite machine-id if you bring down and back up
> (something you probably shouldn't do but still). That could be improved.
The machine-id man page thinks differently
> The machine ID is usually generated from a random source during system
> installation or first boot and stays constant for all subsequent boots.
> Optionally, for stateless systems, it is generated during runtime during early
> boot if necessary.
https://www.freedesktop.org/software/systemd/man/machine-id.html
Given that it is already used this way, I think the correct thing would be to
not set it every boot.
> That being said, the page does also mention using
> /var/lib/dbus/machine-id. I'm not sure what Arch does here exactly. It
> seems like a good idea to try and implement it somehow though.
My impression is that /var/lib/dbus/machine-id is a dbus thing, and systemd took
it over to /etc/machine-id. systemd recommends to symlink the otherway around,
probably makes a little bit more sense now that I think about it, given that
/etc is probably mounted earlier than /var.
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