[libvirt] [PATCH 1/3] qemu: store guest visible disk size from qemu monitor block info

[John Ferlan]

> 
>> a lot of exposure to that code. I do know there's still upstream qemu
>> work taking place. We really should be very careful about adding
>> anything to libvirt before the upstream work is done. In particular any
>> x-* command support.
>>
> 
> AFAIK full pull backups as well as full/incremennal push backups are
> ready to use in qemu. It is a pity that other commands that helps
> organize pull backup process still has experimental status. One day
> they drop this x- and I doubt that things will changed very radically
> in comparison to what we have today. So if with the help of community
> this patch will be ironed out libvirt will get pull backups instantly
> after qemu be full ready.
> 

FWIW: Happened to be scanning through qemu-devel today and came across
the following topic (which interested me because it's related to other
work I'm involved in):

http://lists.nongnu.org/archive/html/qemu-devel/2016-09/msg07721.html

Anyway a few responses in there's this:

http://lists.nongnu.org/archive/html/qemu-devel/2016-09/msg07748.html

and finally this:

http://lists.nongnu.org/archive/html/qemu-devel/2016-09/msg07773.html

Since you do rely on blockdev-add - I'd just caution you to not rely on
something specific...


John