[PVE-User] Fwd: Temporary Migration from Proxmox VE 3.3 (licenced) to 3.1

John M. acid at jsmcomputers.biz
Tue Oct 7 16:30:37 CEST 2014






Hello, 


The safest way (but the longest in terms of downtime) would be if you backup/restore this particular vm on the pve test node. I assume that the test node does not belong to the production cluster, right? 


What excactly is the problem with this vm? BSOD? 
Was it working without issues for some time? If yes, then do you remember if you changed something recently? 
Posting your vm.conf would also help. 


Regards 
John 


--------------------------------------------------------------------------------------------------------------- 
From: Christian Doering < cd at comfortticket.de > 
Date: Tue, Oct 7, 2014 at 4:08 PM 
Subject: [PVE-User] Temporary Migration from Proxmox VE 3.3 (licenced) to 3.1 
To: " pve-user at pve.proxmox.com " < pve-user at pve.proxmox.com > 



Hello PVE Team, 

is it possible to migrate a Windows 2012 Server from a clusternode with Proxmox 3.3 running and a valid community licence to a temporary standalone server with the unsupported (testing) Proxmox 3.1. 

I'm experiencing network problems with the cluster and want to investigate, while the virtual machines should run at a fallback server. I want to look into the problems with as few downtime as possible and don't have to do it in a hurry either. 

However, Windows won't start correct, that is, not at all with rebooting short after starting to load. This might possibly (my guess) be due to "hardware" changes in the VM. The real hardware, a DELL R720, is identical to the ones in the cluster. 
I don't want to alter the VM or resolving it within the Windows recovery environment. It simply should run at the other Server and eventually go back in the cluster without it even recognize the change. 

The greatest difference in the versions I see is the pve-qemu-kvm (the VMs are KVM virtualised) which is version 1.4-17 on the pve-test machine and 2.1-5 on the stable. 

Is it because of this discrepancy that my VMs won't recognize the virtualised hardware as their original or are there other problems. I had so far almost no problems migrating VMs to other versions of the Proxmox VE. However, I think, that were linux machines. 

Would it help to upgrade the System to stable (buying a licence) or would I get the same errors again? 

PS: the network problems which I'm unable to pin so far (it didn't occur again, too): 
http://forum.proxmox.com/threads/19746-Connection-problems-after-upgrade-to-3-3 

best regards, C. Doering 

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