s qemu-img create -o preallocation=metadata -f qcow2 \
/var/lib/libvirt/images/demohostb 30G
# osinfo-query os | gr jessie
-s virt-install --os-variant debian8 --cpu host -n demohost --pxe -r 2048 --vcpus 1 --disk path=/var/lib/libvirt/images/demohost -w bridge=br0,mac=52:54:00:9c:ef:ad
+s virt-install --os-variant debian8 --cpu host -n demohost --pxe -r 2048 --vcpus 1 \
+ --disk path=/var/lib/libvirt/images/demohost \
+ --disk path=/var/lib/libvirt/images/demohostb -w bridge=br0,mac=52:54:00:9c:ef:ad
-disk_config disk1 disklabel:gpt-bios bootable:1 fstabkey:uuid
-primary / 100% ext4 noatime,errors=remount-ro
+disk_config vda
+primary - 20GiB - -
+primary - 4GiB - -
+
+disk_config vdb
+primary - 20GiB - -
+primary - 4GiB - -
+
+disk_config raid
+raid1 / vda1,vdb1 ext3 rw
+raid1 swap vda2,vdb2 swap sw