Re: [Qemu-devel] [PATCH v2 0/6] external backup api

[Denis V. Lunev]

On 02/09/2016 05:28 PM, Stefan Hajnoczi wrote:
> On Fri, Feb 05, 2016 at 11:28:42AM +0300, Denis V. Lunev wrote:
> > On 02/03/2016 11:14 AM, Fam Zheng wrote:
> > > On Sat, 01/30 13:56, Vladimir Sementsov-Ogievskiy wrote:
> > > > Hi all.
> > > >
> > > > These series which aims to add external backup api. This is needed to allow
> > > > backup software use our dirty bitmaps.
> > > >
> > > > Vmware and Parallels Cloud Server have this feature.
> > > What is the advantage of this appraoch over "drive-backup sync=incremental
> > > ..."?
> > This will allow third-party vendors to backup QEMU VMs into
> > their own formats or to the cloud etc.
> As an example, there is a third-party backup format called VMA from
> Proxmox.  A few years ago I posted a proof-of-concept external backup
> tool in Python:
>
> https://lists.gnu.org/archive/html/qemu-devel/2013-03/msg01536.html
>
> It takes a full backup using drive-backup NBD (plus RAM/device state)
> but the same can be done with incremental backups.
>
> Does this NBD approach meet your requirements?
>
> Stefan
for us we should somehow provide implementation of
calls posted by Vladimir. They are available in Parallels Server
version 6 and should be available in the next QEMU based
release using "Parallels SDK to libvirt" convertor. The problem
for us is that this old approach is used in the other side
of the product - in containers implementation while this
SDK is a universal access tool to both things.

Den