[pve-devel] saving kvm command line for migration

[Stefan Priebe - Profihost AG]

Am 19.02.2014 um 16:18 schrieb Dietmar Maurer <dietmar at proxmox.com>:

>> 3.) I would like to store the generated command line of each start in the
>> command file to be sure at restore or migration the exact and correct
>> command line is used
> 
> I consider this wrong and very dangerous. The stored command line
> is not 'correct' - instead it is almost always wrong to use that.
> 
> Here are just a few examples:
> 
> 1.) VM Image path can change (dangerous)
> 2.) VM images are not correctly activated
> 3.) different kvm versions may need different syntax
> 4.) SPICE tcp port is wrong

Ok this makes sense. But what is about later activated features which become default like x2apic feature for cpu? Or do you think we'll never have such?

Greets,
Stefan