------- Comment From [email protected] 2018-09-07 08:38 EDT-------
I have some more bad surprises:
On Monday I upgraded my x86 KVM hypervisors from 16.04.5 to 18.04.1.
No problems at all.
On Wednesday I upgraded the ppc KVM hypervisors from 16.04.5 to 18.04.1.
Problem 1:
In the middle of the upgrade process I could not live migrate the guests from
the 16.04 hypervisor to the 18.04 hypervisor.
None of the 13 guests!
root@pkvm2:~# virsh migrate --persistent --live pkut04 qemu+ssh://pkvm1/system
error: internal error: process exited while connecting to monitor:
2018-09-05T11:07:58.260851Z qemu-system-ppc64: warning: CPU(s) not present in
any NUMA nodes: CPU 1 [core-id: 1]
2018-09-05T11:07:58.260859Z qemu-system-ppc64: warning: All CPU(s) up to
maxcpus should be described in NUMA config, ability to start up with partial
NUMA mappings is obsoleted and will be removed in future
2018-09-05T11:07:58.262038Z qemu-system-ppc64: This machine version does not
support CPU hotplug
So I had to shutdown all the guests to do the upgrade of the second
hypervisor !!!
Probem 2:
When the second hypervisor was on 18.04.1 I could not start most of the guests.
Only 4 of 13 guests started.
(a) some qcow2 disks have been marked as sharable
worked on Ubuntu 16.04, but noot on 18.04
(b) vcpu definition
on Ubuntu 16.04 <vcpu placement='static' current='8'>160</vcpu> worked
on Ubuntu 18.04 this does not work on ppc ("This machine version does not
support CPU hotplug").
I had to cahnge it to <vcpu placement='static'>8</vcpu>
I could resolve 2a and 2b. But it is frustrating to get such additional
adventure games in the maintenance window.
You think "just start the guests, then I can go home", and then the guests do
not start.
And it is even more frustrating when you did just the same task 2 days ago on
x86 without any problems.
Maybe Problem 1 has the same reason as Problem 2. In other words: With the
changed domain XML, maybe a live migration from Ubuntu 16.04 hypervisor to
18.04 hypervisor would work.
But I cannot verify this assumption. Now both my hypervisors are finally on
18.04.1 and live migration between them works for all guests.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1783140
Title:
KVM live migration fails
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-power-systems/+bug/1783140/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
