Re: Xen 4.3 development update RC2 imminent

[George Dunlap <george.dunlap@eu.citrix.com>]

On 20/05/13 11:51, Wei Liu wrote:
> On Mon, May 20, 2013 at 11:33:23AM +0100, George Dunlap wrote:
> [...]
>> == Open bugs ==
>>
>> * mac address changes on reboot if not specified in config file
>>    owner: ??
>>
> I think this is a known issue as xl doesn't update config to stored
> config file.
>
> It also affects things like updating domain name then do migration /
> reboot etc.
>
> It might be fixed in a straight-forward manner by having stored config
> file update every time domain live config is updated. But I'm not sure.
>
> I might have a look at this when I have time.

ISTR that actually at the moment the domain config by default is 
reloaded from the file on a reboot.  (Could be wrong about that.) That 
leads to a number of strange things, like the cd-rom changing on reboot 
to what was in the config file, for example.

I think long-term we probably want to sort out the "right" way to do 
this -- ideally I think we'd like there to be a "config on next reboot" 
that one could manipulate while the VM is running -- manually changing 
such things as the number of vcpus or amount of memory, automatically 
updating things like the cdrom and the mac address.

But since there is a pretty sensible work-around for this (namely, just 
specify the mac address) I think it would be better to focus on some of 
the qemu-related ones.

  -George