So I should add that one-off changes are still possible, albeit
they have to be done manually.
You could try:
$ virt-rescue -a openbsd.img
Inside the rescue shell you can mount the disk using the correct
ufstype= mount option, eg:
<rescue> mount -o ufstype=WHATEVER /dev/sda1 /sysroot/
You can also automate this to some extent using guestfish (the
"mount-options" command).
Rich.
--
Richard Jones, Virtualization Group, Red Hat
http://people.redhat.com/~rjones
Read my programming and virtualization blog:
http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/