[Libguestfs] [v2v PATCH 4/4] convert_linux: install the QEMU guest agent with a firstboot script

Laszlo Ersek
Thu, 09 Jun 2022 13:53:39 -0000

On 06/09/22 15:10, Laszlo Ersek wrote:

> nm-online -x -q ||
> (
>   systemctl -q is-active systemd-networkd &&
>   /usr/lib/systemd/systemd-networkd-wait-online -q --timeout=30
> )
>
> If the final exit status is nonzero, I think that's not a problem for
> the firstboot script.
>
> The whole command seems to make sense also when nm-online, systemctl, or
> both, are missing (a missing command results in exit status 127).

Unfortunately, this does not work. Even though the command succeeds very
quickly (implying network is available), the DNF throws a CURL error
that it cannot access the repo (DNS resolution failure). So basically
"nm-online" lies.

Compare:

https://bugzilla.redhat.com/show_bug.cgi?id=1482476#c4

> My current workaround is to use "/usr/bin/sleep 60" instead of
the
> "/usr/bin/nm-online -s -q --timeout=30" command in the service
unit
> file.

:/

NB, when I log in at the root prompt of the just-firstbooted-guest (on
tty1), and run "nm-online -x -q", it succeeds alright, and I can even
ssh into the guest... (more precisely, I get an ssh password prompt; I
can't actually log in as root via ssh due to the default sshd config not
permitting that).

We can't rely on "nm-online" if it doesn't do its advertized
job!

Laszlo