[libvirt] [PATCH] libxl: advertise support for migration V3

[Joao Martins]

On 08/29/2016 06:20 PM, Jim Fehlig wrote:
> The libxl driver has long supported migration V3 but has never
> indicated so in the connectSupportsFeature API. 

Hmm, but IIRC it was only since "recent" commit 8db77b3 right? Or rather Nikolay's
reworking top-level migration code, which effectively would convert to the params
versions accordingly. Before that rework I think one had to implement both params and
non-params variants. Would it be worth adding a comment mainly to help the reader?

(I vaguely remember this as I dropped my v3 patch as being no longer necessary)

> As a result, apps
> such as virt-manager that use the more generic virDomainMigrate API
> fail with
> 
> libvirtError: this function is not supported by the connection driver:
> virDomainMigrate
> 
> Add VIR_DRV_FEATURE_MIGRATION_V3 to the list of features marked as
> supported in the connectSupportsFeature API.

FWIW and irrespective of the comment above:

Reviewed-by: Joao Martins <joao.m.martins at oracle.com>