And some more interesting behaviour: When I do node01:~# xm migrate -l wp02 node02 after libvirt has lost track of wp01, it reappears again at node02! node02:~# xm list Name ID Mem VCPUs State Time(s) Domain-0 0 192 2 r----- 74.1 wp01 3 512 2 -b---- 1.8 wp02 4 512 2 -b---- 0.0 But now, wp02 is not seen by libvirt. And I can push it further: node02:~# xm create wp03.cfg Using config file "/etc/xen/wp03.cfg". Started domain wp03 node02:~# xm list Name ID Mem VCPUs State Time(s) Domain-0 0 192 2 r----- 80.5 wp01 3 512 2 -b---- 2.2 wp02 4 512 2 -b---- 0.4 wp03 5 512 2 -b---- 5.2 Now guess, wp02 reappears, but wp03 is missing. It seems to me that the domain with the highest ID is missing. node02:~# xm create wp04.cfg Using config file "/etc/xen/wp04.cfg". Error: I need 524288 KiB, but dom0_min_mem is 262144 and shrinking to 262144 KiB would leave only 200712 KiB free. node02:~# Now, wp03 shortly pops up, but is then lost again. # xm shutdown wp03 Now wp02 is lost again! # xm shutdown wp02 and now, wp01. -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list