[PVE-User] ERROR: unable to connect to VM 105 qmp socket - timeout after 31 retries

["[SOLTECSIS] Carles Xavier Munyoz Baldó"]

Good morning,
We are still having this problem and it is becoming a very serious problem.

We have several installations of Proxmox and we have seen that it is
happening in all installations with the last Proxmox version (3.4-3) and
with qcow2 disks.

We have seen that in all installations with Proxmox 3.4-3 and in virtual
machines with qcow2 disks the problem is happening. It happens very
randomly. When one VM has the problem, after rebooting it killing the
kvm process with kill -9, it may go fine several days but then fails again.

We have seen that in other installations with previos versions of
Proxmox all is going fine.

All of this make us think that there is a bug in the software included
in the last Proxmox version.
Anyone has had problems like this?

We are thinking about downgrade Proxmox version to 3.1, is it possible?
How can we do it?

Best regards.



El 07/05/15 a las 10:55, "[SOLTECSIS] Carles Xavier Munyoz Baldó" escribió:
> Hello,
> It seems that converting the qcow2 virtual disk file to the last qcow2
> format solves the problem.
> 
> In a virtual machine with the problem, before the conversión, the
> qemu-img info comands shows this:
> [...]
> # qemu-img info disk.qcow2.OLD
> image: disk.qcow2.OLD
> file format: qcow2
> virtual size: 32G (34359738368 bytes)
> disk size: 8.3G
> cluster_size: 65536
> Format specific information:
>     compat: 0.10
> [...]
> 
> After the virtual disk conversion using the command:
> # qemu-img convert -O qcow2 disk.qcow2.OLD disk.qcow2
> the info command shows:
> [...]
> # qemu-img info disk.qcow2
> image: disk.qcow2
> file format: qcow2
> virtual size: 32G (34359738368 bytes)
> disk size: 8.1G
> cluster_size: 65536
> Format specific information:
>     compat: 1.1
>     lazy refcounts: false
>     corrupt: false
> [...]
> 
> We are waiting a prudential time in order to conclude that the problem
> is solved, but since the conversion the virtual machines are stable.
> 
> The conversion moves the virtual disk qcow2 file from compat: 0.10 to
> compat: 1.1. Is it possible that the software under Proxmox 3.4 is
> incompatible with qcow2 files compat: 0.10?
> As I said in my first e-mail, we were running the virtual machines
> without problems until we upgrade Proxmox from 3.1 to 3.4.
> 
> Best regards.
> 
> 
> El 05/05/15 a las 19:18, "[SOLTECSIS] Carles Xavier Munyoz Baldó" escribió:
>> More info about the problem ...
>> It seems that the virtual machines lost access to its disks, because
>> there are no logs in the /var/log/syslog file since the problem until de
>> hard reboot.
>>
>> The two virtual machines use qcow2 virtual disks.
>> ¿Should I do something in the virtual disks after the upgrade?
>>
>>
>> El 05/05/15 a las 19:14, "[SOLTECSIS] Carles Xavier Munyoz Baldó" escribió:
>>> Hello,
>>> Yes, I rebooted the entire host server because in the updates where
>>> included a new kernel.
>>>
>>> The problem arises after the upgrade and host server reboot. And it is
>>> not inmediatly after the virtual machines boot, it has happen after
>>> several hours of normal operation and the two virtual machines where not
>>> affected at the same time.
>>>
>>> Thank you for your help.
>>>
>>>
>>> El 05/05/15 a las 19:00, Michael Rasmussen escribió:
>>>> On Tue, 05 May 2015 18:50:42 +0200
>>>> "[SOLTECSIS] Carles Xavier Munyoz Baldó" <carles at unlimitedmail.org>
>>>> wrote:
>>>>
>>>>> A few hours after upgrade, I have had problems with two different
>>>>> virtual machines, one with Windows and the other one with Linux. The
>>>>> virtual machines have been stopped working. I have tried to access the
>>>>> console of them but it was not possible and in the /var/log/syslogfile I
>>>>> have seen errors like these:
>>>> Did you stop and start the VM's after updating proxmox?
>>>>
>>>> proxmox 3.1 -> 3.4 includes a major upgrade of qemu why a stop and
>>>> start of the VM's is required.
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> pve-user mailing list
>>>> pve-user at pve.proxmox.com
>>>> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>>>>
>>>
>>> ========================================
>>> SOLTECSIS SOLUCIONES TECNOLOGICAS, S.L.
>>> Carles Xavier Munyoz Baldó
>>> Departamento de I+D+I
>>> Tel./Fax: 966 446 046
>>> cmunyoz at soltecsis.com
>>> www.soltecsis.com
>>> ========================================
>>>
>>> ---
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>>>
>>
>>
> 
> 

========================================
SOLTECSIS SOLUCIONES TECNOLOGICAS, S.L.
Carles Xavier Munyoz Baldó
Departamento de I+D+I
Tel./Fax: 966 446 046
cmunyoz at soltecsis.com
www.soltecsis.com
========================================

---
La información contenida en este e-mail es confidencial,
siendo para uso exclusivo del destinatario arriba mencionado.
Le informamos que está totalmente prohibida cualquier
utilización, divulgación, distribución y/o reproducción de
esta comunicación sin autorización expresa en virtud de la
legislación vigente. Si ha recibido este mensaje por error,
le rogamos nos lo notifique inmediatamente por la misma vía
y proceda a su eliminación.
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