Ben Chaney <[email protected]> writes:
> Provide the cpr=on option to preserve TAP and vhost descriptors during
> cpr-transfer, so the management layer does not need to create a new
> device for the target.
>
> Save all tap fd's in order with the tap device fds saved first,
> and the vhostfd saved after.
>
> Example:
>
> -netdev tap,id=hostnet2,cpr=on
>
> Signed-off-by: Steve Sistare <[email protected]>
> Signed-off-by: Ben Chaney <[email protected]>
[...]
> diff --git a/qapi/net.json b/qapi/net.json
> index 118bd34965..4b12fca94b 100644
> --- a/qapi/net.json
> +++ b/qapi/net.json
> @@ -355,6 +355,9 @@
> # @poll-us: maximum number of microseconds that could be spent on busy
> # polling for tap (since 2.7)
> #
> +# @cpr: preserve the state of this device and its associated file
> +# descriptors during cpr-transfer for reduced migration downtime
(default: false) (since 11.0)
> +#
> # Since: 1.2
> ##
> { 'struct': 'NetdevTapOptions',
> @@ -373,7 +376,8 @@
> '*vhostfds': 'str',
> '*vhostforce': 'bool',
> '*queues': 'uint32',
> - '*poll-us': 'uint32'} }
> + '*poll-us': 'uint32',
> + '*cpr': 'bool'} }
>
> ##
> # @NetdevSocketOptions:
With that, QAPI schema
Acked-by: Markus Armbruster <[email protected]>
