[PVE-User] PVE 5.1 - Intel <-> AMD migration crash with Debian 9

Eneko Lacunza elacunza at binovo.es
Wed Feb 7 09:22:08 CET 2018


Hi,

I finally reproduced the problem with a Ubuntu 14.04.2 LTS VM, so not a 
Debian 9-only problem.

Is there anything I to report this bug to Proxmox/upstream?

El 06/02/18 a las 12:07, Eneko Lacunza escribió:
> Hi all,
>
> El 02/02/18 a las 13:21, Eneko Lacunza escribió:
>>
>>>> Eneko Lacunza <elacunza at binovo.es> hat am 2. Februar 2018 um 10:14 
>>>> geschrieben:
>>>> proxmox-ve: 5.1-35 (running kernel: 4.13.13-4-pve)
>>> This kernel produced a lot of crashes (especially on windows), even 
>>> without any migrations.
>>>
>>> Please retest with latest kernel.
>> Just updated the cluster:
>> # pveversion -v
>> proxmox-ve: 5.1-38 (running kernel: 4.13.13-5-pve)
> [...]
>> The reported VM has migrated well for now, but I have seen a similar 
>> crash with another two Debian 9 VMs this time. Other VMs and 
>> SO/distros continue to work well, maybe there's a problem in guest 
>> kernel. I continue to get crashes after Intel<>AMD migrations, 
>> Intel<->Intel migrations work without issue (done ten's of them 
>> during cluster upgrade).
>>
> Seems that only Debian 9 VMs with more than 1 cores are affected by 
> this problem. All 3 VMs had 2 or 4 cores. I changed the original 
> reported VM to 1 core, and seems not to crash now. NUMA is not enabled.
>
> I tried with previous Debian kernel (VMs are running now 
> 4.9.0-5-amd64, previous is 4.9.0-4-amd64); and it crashes too.
>
> I tried with a Ubuntu 14.04.02 LTS with 2 cores, but I'm unable to 
> reproduce the problem. Windows VMs also really seem unaffected.
>
> Shall I report this to Debian kernel team?
>
> Thanks a lot
> Eneko
>

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