MTV 2.7.8 
RHEL 9 dual boot (alt boot)

It was believed that all known dual boot issues had been fixed migrations as of bug https://issues.redhat.com/browse/MTV-1864 and MTV-1877.  

We note from MTV-1900 that multi boot migration is still best-effort.  

Our customer tested their setup and the converted VM drops into a dracut shell.  Debugging with the customer shows that the VM is converted but the default booting initramfs (5.14.0-503.21.1.el9_5.x86_64) does not contain the virtio_scsi driver and thus none of the drives are found. 

The VM definition has:

           disks:
            - disk:
                bus: virtio
              name: vol-0
            - disk:
                bus: virtio
              name: vol-1
            - disk:
                bus: virtio
              name: vol-2

'lvm pvscan' comes up with no drives, and we don't see them in /dev.