[libvirt] [RFC v3] external (pull) backup API

[Daniel P. Berrangé]

On Thu, May 17, 2018 at 05:43:37PM -0500, Eric Blake wrote:
> Here's my updated counterproposal for a backup API.
> 
> In comparison to v2 posted by Nikolay:
> https://www.redhat.com/archives/libvir-list/2018-April/msg00115.html
> - changed terminology a bit: Nikolay's "BlockSnapshot" is now called a
> "Checkpoint", and "BlockExportStart/Stop" is now "BackupBegin/End"
> - flesh out more API descriptions
> - better documentation of proposed XML, for both checkpoints and backup
> 
> Barring any major issues turned up during review, I've already starting to
> code this into libvirt with a goal of getting an implementation ready for
> review this month.

I think the key thing missing from the docs is some kind of explanation
about the difference between a backup, and checkpoint and a snapshot.
I'll admit I've not read the mail in detail, but at a high level it is
not immediately obvious what the difference is & thus which APIs I would
want to be using for a given scenario.


Regards,
Daniel
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