Create zfs dataset for disk:
zfs create -V 10G rpool/xen/dilosHVM
INFO:
For installation we need 2GB RAM. After installation we can use less if needed.
Installation command:
virt-install -v --name=dilosHVM --ram=2048 --network bridge \ --disk path=/dev/zvol/dsk/rpool/xen/dilosHVM,driver=phy --vcpu=2 \ --cdrom /xen/isos/dilos-1.3.4-i386.iso --vnc