Re: [Qemu-devel] QCOW rebases on running VMs

[Eric Blake]

On 01/28/2016 05:36 AM, Alex Bligh wrote:
> 
> On 27 Jan 2016, at 20:47, Eric Blake <address@hidden> wrote:
> 
>>>
>>>
>>> If not, do I need to use QMP magic instead?
>>
>> Yes. block-commit is your friend.
> 
> Sadly what I need is block-stream to an intermediate layer (as I
> want to merge in the other direction); I don't think that proposal
> was ever implemented.
> 
> http://wiki.qemu.org/Features/Snapshots#Streaming_to_an_Intermediate_Layer_.5Bproposal.5D

Alberto was working on it last; this was the most recent mail I found on
the topic (just to the qemu-block list):
https://lists.gnu.org/archive/html/qemu-block/2015-12/msg00214.html

so although I recall some RFC patches having been posted, you are right
that it still needs some work to be merged in.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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