Re: [Qemu-devel] [PATCH V2 00/10] snapshot: take block snapshots in unified way

[Stefan Hajnoczi <stefanha@gmail.com>]

On Mon, Jan 14, 2013 at 10:09:45AM +0800, Wenchao Xia wrote:
> 于 2013-1-11 21:56, Luiz Capitulino 写道:
> >On Thu, 10 Jan 2013 14:01:27 +0800
> >Wenchao Xia <xiawenc@linux.vnet.ibm.com> wrote:
> >
> >>于 2013-1-10 6:34, Eric Blake 写道:
> >>>On 01/07/2013 12:27 AM, Wenchao Xia wrote:
> >>>>    These patch added a seperated layer to take internal or external snapshots
> >>>>in a unified way, the granularity is block device, so other functions can
> >>>>just combine the request and submit, such as group snapshot, savevm.
> >>>>
> >>>>Total goal are:
> >>>>    Live back up vm in external or internal image, which need three functions:
> >>>>1 live snapshot block device internal/external.
> >>>>2 live save vmstate internal/external.
> >>>>3 combination of the function unit.
> >>>>
> >>>>    This serial provide part one.
> >>>>
> >>>
> >>>The design on this series needs to be coordinated with Pavel's
> >>>attempts[1] to convert the existing HMP snapshot commands into QMP.  I
> >>>don't want to spend too much time reviewing two different divergent
> >>>designs that both have the same goal of finally managing snapshots under
> >>>QMP.
> >>>
> >>>[1] https://lists.gnu.org/archive/html/qemu-devel/2013-01/msg01326.html
> >>>
> >>    A bit difference: This serial are taking internal/external block
> >>snapshots but Pavel's are focusing are vm whole internal snapshots. It
> >
> >Pavel's work makes savevm, loadvm and delvm available in QMP. Also note
> >that we do have blockdev-snapshot-sync. How does this series relate to it?
> >
> >I don't know if it's just me but, honestly speaking, I'm getting confused
> >about the various proposals and APIs for snapshots.
> >
> >IMHO, it's time to go back a bit from code and discuss the status of the
> >current APIs, what's missing and what the proposals are.
> >
> >This should also include writing a wiki page, as Anthony has done for
> >previous ideas (which worked quite well).
> >
>   I agree, can you help create an account on qemu wiki for me?

I have created an account for you.  Please see the private message.

Stefan