Virtualization#
$ machinectl list
$ virsh
QEMU#
Checking a disk image#
# qemu-img check [-f format] imgname
Committing changes to an image#
# qemu-img commit [-f fmt] [-t cache] imgname
Comparing images#
# qemu-img compare [-f fmt] [-F fmt] [-p] [-s] [-q] imgname1 imgname2
Migrating Virtual Machines#
# systemctl enable --now libvirtd.service
# systemctl restart libvirtd.service
# vim /etc/libvirt/libvirtd.conf
# systemctl restart libvirtd.service
Live Migration#
# virsh migrate --live GuestName DestinationURL
On brick01.hypervisor.example.com#
# virsh migrate --live vm01 qemu+ssh://brick02.hypervisor.example.com/system