[PVE-User] qm migrate: strange output

[Uwe Sauter]

Hi all,

usually when I update my PVE cluster I do it in a rolling fashion:
1) empty one node from running VMs
2) update & reboot that node
3) go to next node
4) migrate all running VMs to already updated node
5) go to 2 until no more nodes need update

For step 1 (or 4) I usually do:

# qm list
      VMID NAME                 STATUS     MEM(MB)    BOOTDISK(GB) PID
       106 test1                running    2048              32.00 4993
       112 test2                running    1024              16.00 5218

# for i in 106 112; do qm migrate $i px-bravo-cluster --online; done

Usually I get multiple lines like:

Executing HA migrate for VM 106 to node px-bravo-cluster
Executing HA migrate for VM 112 to node px-bravo-cluster

But once in a while (in the last few days more often) I get:

Jun 20 18:15:42 starting migration of VM 106 to node 'px-bravo-cluster' (169.254.42.49)
Jun 20 18:15:42 copying disk images
Jun 20 18:15:42 starting VM 106 on remote node 'px-bravo-cluster'
Jun 20 18:15:46 start remote tunnel
Jun 20 18:15:46 starting online/live migration on unix:/run/qemu-server/106.migrate
Jun 20 18:15:46 migrate_set_speed: 8589934592
Jun 20 18:15:46 migrate_set_downtime: 0.1
Jun 20 18:15:46 set migration_caps
Jun 20 18:15:46 set cachesize: 214748364
Jun 20 18:15:46 start migrate command to unix:/run/qemu-server/106.migrate
Jun 20 18:15:48 migration status: active (transferred 632787397, remaining 463048704), total 2156732416)
Jun 20 18:15:48 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 20 18:15:50 migration speed: 512.00 MB/s - downtime 81 ms
Jun 20 18:15:50 migration status: completed
Jun 20 18:15:54 migration finished successfully (duration 00:00:13)
Jun 20 18:15:55 starting migration of VM 112 to node 'px-bravo-cluster' (169.254.42.49)
Jun 20 18:15:55 copying disk images
Jun 20 18:15:55 starting VM 112 on remote node 'px-bravo-cluster'
Jun 20 18:15:58 start remote tunnel
Jun 20 18:15:58 starting online/live migration on unix:/run/qemu-server/112.migrate
Jun 20 18:15:58 migrate_set_speed: 8589934592
Jun 20 18:15:58 migrate_set_downtime: 0.1
Jun 20 18:15:58 set migration_caps
Jun 20 18:15:58 set cachesize: 107374182
Jun 20 18:15:58 start migrate command to unix:/run/qemu-server/112.migrate
Jun 20 18:16:00 migration status: active (transferred 876920642, remaining 143405056), total 1082990592)
Jun 20 18:16:00 migration xbzrle cachesize: 67108864 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 20 18:16:02 migration speed: 256.00 MB/s - downtime 66 ms
Jun 20 18:16:02 migration status: completed
Jun 20 18:16:06 migration finished successfully (duration 00:00:12)


Can someone explain under which circumstances this output is displayed instead of just the short message that migration
was started?


Regards,

	Uwe