[PVE-User] Nested Virtualization and Live Migration

Tue Sep 10 10:05:48 CEST 2019

 > https://www.linux-kvm.org/page/Nested_Guests

the page is sadly outdated

there are efforts in kernel and qemu to enable real working live 
migration of nested machines.

currently qemu decided to disable migration altogether when nesting is 
enabled and the guest has the vmx/svm flag.[0]

you can try with a cpu model that does not include that flag, but
you lose nesting for that machine ofc.

kind regards
Dominik

0: 
https://github.com/qemu/qemu/commit/d98f26073bebddcd3da0ba1b86c3a34e840c0fb8