Live migration moves a running VM between cluster nodes with minimal interruption (milliseconds). Requires shared storage or local disk copying, compatible CPU types, and network connectivity.
qm migrate 100 node2 --online
qm migrate 100 node2 --online --with-local-disks
pct migrate 200 node2 --online
VMs with PCI passthrough (GPU) do not support live migration. Only offline migration is possible for these VMs.