proxmox中如果guest的vm file是放在local disk
從web介面是沒有辦法online live migration的

會出現

2018-12-26 12:52:46 starting migration of VM 701 to node 'proxmox2'
2018-12-26 12:52:47 found local disk 'local-zfs:vm-701-disk-0' (in current VM config)
2018-12-26 12:52:47 can't migrate local disk 'local-zfs:vm-701-disk-0': can't live migrate attached local disks without with-local-disks option
2018-12-26 12:52:47 ERROR: Failed to sync data - can't migrate VM - check log
2018-12-26 12:52:47 aborting phase 1 - cleanup resources
2018-12-26 12:52:47 ERROR: migration aborted (duration 00:00:01): Failed to sync data - can't migrate VM - check log
TASK ERROR: migration aborted

要手動下指令

qm migrate vmid nodename --with-local-disks --online

例如
qm migrate 701 proxmox2 --with-local-disks --online