Nir Soffer <[email protected]> writes:

> On Fri, Jul 9, 2021 at 5:57 PM nroach44--- via Users <[email protected]> wrote:
>>
>> Hi All,
>
>>
>> After upgrading some of my hosts to 4.4.7, and after fixing the
>> policy issue, I'm no longer able to migrate VMs to or from 4.4.7
>> hosts. Starting them works fine regardless of the host version.
>>
>> HE 4.4.7.6-1.el8, Linux and Windows VMs.
>>
>> The log on the receiving end (4.4.7 in this case):
>> VDSM:
>> 2021-07-09 22:02:17,491+0800 INFO (libvirt/events) [vds] Channel
>> state for vm_id=5d11885a-37d3-4f68-a953-72d808f43cdd changed
>> from=UNKNOWN(-1) to=disconnected(2) (qemuguestagent:289)
>> 2021-07-09 22:02:55,537+0800 INFO (libvirt/events) [virt.vm]
>> (vmId='5d11885a-37d3-4f68-a953-72d808f43cdd') underlying process
>> disconnected (vm:1134)
>> 2021-07-09 22:02:55,537+0800 INFO (libvirt/events) [virt.vm]
>> (vmId='5d11885a-37d3-4f68-a953-72d808f43cdd') Release VM resources
>> (vm:5313)
>> 2021-07-09 22:02:55,537+0800 INFO (libvirt/events) [virt.vm]
>> (vmId='5d11885a-37d3-4f68-a953-72d808f43cdd') Stopping connection
>> (guestagent:438)
>> 2021-07-09 22:02:55,539+0800 INFO (libvirt/events) [virt.vm]
>> (vmId='5d11885a-37d3-4f68-a953-72d808f43cdd') Stopping connection
>> (guestagent:438)
>> 2021-07-09 22:02:55,539+0800 INFO (libvirt/events) [vdsm.api] START
>> inappropriateDevices(thiefId='5d11885a-37d3-4f68-a953-72d808f43cdd')
>> from=internal, task_id=7abe370b-13bc-4c49-bf02-2e40db142250 (api:48)
>> 2021-07-09 22:02:55,544+0800 WARN (vm/5d11885a) [virt.vm]
>> (vmId='5d11885a-37d3-4f68-a953-72d808f43cdd') Couldn't destroy
>> incoming VM: Domain not found: no domain with matching uuid
>> '5d11885a-37d3-4f68-a953-72d808f43cdd' (vm:4046)
>> 2021-07-09 22:02:55,544+0800 INFO (vm/5d11885a) [virt.vm]
>> (vmId='5d11885a-37d3-4f68-a953-72d808f43cdd') Changed state to Down:
>> VM destroyed during the startup (code=10) (vm:1895)
>>
>> syslog shows:
>> Jul 09 22:35:01 HOSTNAME abrt-hook-ccpp[177862]: Process 177022
>> (qemu-kvm) of user 107 killed by SIGABRT - dumping core
>>
>> qemu:
>> qemu-kvm: ../util/yank.c:107: yank_unregister_instance: Assertion
>> `QLIST_EMPTY(&entry->yankfns)' failed.
>> 2021-07-09 14:02:54.521+0000: shutting down, reason=failed
>
> Looks like another qemu 6.0.0 regression. Please file ovirt bug for this.

As pointed out by Jean-Louis Dupond, we already have one:
https://bugzilla.redhat.com/1964326

> Note that on RHEL we are still using qemu 5.2.0. qemu 6.0.0 is expected
> in RHEL 8.5.
>
>> When migrating from 4.4.7 to 4.4.6, syslog shows:
>> Jul 09 22:36:36 HOSTNAME libvirtd[2775]: unsupported configuration: unknown 
>> audio type 'spice'
>
> Sharing vm xml can help to understand this issue.
>
> Milan, did we test migration from 4.4.7 to 4.4.6?

I don't know but they work for me with QEMU 5.2.
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