Re: [PATCH v5 06/11] qapi: add failover negotiated event

[Dr. David Alan Gilbert]

* Jens Freimann (address@hidden) wrote:
> This event is sent to let libvirt know that VIRTIO_NET_F_STANDBY
> feature was not negotiated during virtio feature negotiation. If this
> event is received it means any primary devices hotplugged before
> this were were never really added to QEMU devices.
> 
> Signed-off-by: Jens Freimann <address@hidden>

Can I just understand a bit more about what the meaning of this is.

Say my VM boots:
   a) BIOS
   b) Boot loader
   c) Linux
   d) Reboots
      (possibly a',b', different c')

When would I get that event?
When can libvirt know it can use it?

Dave

> ---
>  qapi/net.json | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/qapi/net.json b/qapi/net.json
> index 728990f4fb..8c5f3f1fb2 100644
> --- a/qapi/net.json
> +++ b/qapi/net.json
> @@ -737,3 +737,19 @@
>  ##
>  { 'command': 'announce-self', 'boxed': true,
>    'data' : 'AnnounceParameters'}
> +
> +##
> +# @FAILOVER_NEGOTIATED:
> +#
> +# Emitted when VIRTIO_NET_F_STANDBY was negotiated during feature negotiation
> +#
> +# Since: 4.2
> +#
> +# Example:
> +#
> +# <- { "event": "FAILOVER_NEGOTIATED",
> +#      "data": {} }
> +#
> +##
> +{ 'event': 'FAILOVER_NEGOTIATED',
> +  'data': {} }
> -- 
> 2.21.0
> 
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK