eric wrote
Snapshot from the host need to be made with another way.
Someday, when you find some "spare" time, please enlighten us.
I can use dd if=/dev/sdf34 of=host.img bs=1M ; sync or improve it with bzip/gzip but an iso that can boot is a different story.
Dd takes a long time but it has been 100% reliable and also takes space.
If you have a 4GB system on a 45GB partition dd makes an image of the 45GB, zipped it might be 20GB, if you have zeroed out all free space.
If you narrow the partition to 4.1GB it works fine, but shrinking and enlarging partitions involves a certain risk, and then you have to have a 4.11GB partition to restore it.