Andrei Borzenkov wrote on 15/06/2022 16:56:
I tried it (loop mounting qemu image):
systemd-nspawn -D ./hd0 -b
and it failed miserably with "Timeout waiting for device
dev-disk-by...". Which is not surprising as there are no device units
inside of container (it stops in single user allowing me to use sysctl
-t device).
Is it supposed to work at all? Even if I bind mount /dev/disk it does
not help as systemd does not care whether device is actually present or not.
I've not tried "booting" a real install inside nspawn before (just
images installed by mkosi mostly), but could this just be a by-product
of it trying to do what /etc/fstab (or other mount units) say to do?
Can you try something like:
touch blank
systemd-nspawn --bind-ro=./blank:/etc/fstab -D ./hd0 -b
to override the /etc/fstab (there may be other more elegant ways to
disable fstab processing!) and see if that helps?
If you have specific .mount units you may have to add specific
workarounds to block them too.
HTHs
Col
