[Pkg-libvirt-maintainers] Bug#992119: virt-install --cloud-init doesn't work with Debian genericcloud images

[David Mandelberg]

Package: virtinst
Version: 1:3.2.0-3

I tried to use virt-install's --cloud-init option with a genericcloud 
image[0], and cloud-init in the image didn't seem to find the ISO that 
virt-install set up. From the XML, it looks like virt-install made a 
SATA drive:

     <disk type='file' device='cdrom'>
       <driver name='qemu' type='raw'/>
       <source 
file='/var/lib/libvirt/boot/virtinst-5wk0hc7u-cloudinit.iso' index='1'/>
       <backingStore/>
       <target dev='sda' bus='sata'/>
       <readonly/>
       <alias name='sata0-0-0'/>
       <address type='drive' controller='0' bus='0' target='0' unit='0'/>
     </disk>

https://cloud.debian.org/images/cloud/ says that genericcloud "is 
smaller than `generic` by excluding drivers for physical hardware", so 
I'm guessing the reason cloud-init couldn't find the ISO is that 
genericcloud images don't include SATA drivers? I tried a generic image 
instead, and it worked.

Would it make sense to change virt-install to use virtio for the ISO 
file? (Or some other way of providing the ISO that genericcloud has 
drivers for?)

  [0] 
https://cloud.debian.org/images/cloud/bullseye/daily/20210808-728/debian-11-genericcloud-amd64-daily-20210808-728.raw