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Re: [PATCH v6 06/11] qapi: add failover negotiated event
From: |
Markus Armbruster |
Subject: |
Re: [PATCH v6 06/11] qapi: add failover negotiated event |
Date: |
Fri, 25 Oct 2019 16:03:54 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) |
Bear with me, I know next to nothing about failover.
Jens Freimann <address@hidden> writes:
> This event is sent to let libvirt know that VIRTIO_NET_F_STANDBY feature
> was enabled. The primary device this virtio-net device is associated
> with, will now be hotplugged via qdev_device_add().
Passive voice deftly avoids telling the reader who will do the
hot-plugging. Intentional?
> Signed-off-by: Jens Freimann <address@hidden>
> Acked-by: Cornelia Huck <address@hidden>
> ---
> qapi/net.json | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> diff --git a/qapi/net.json b/qapi/net.json
> index 728990f4fb..ea6eeee4f7 100644
> --- a/qapi/net.json
> +++ b/qapi/net.json
> @@ -737,3 +737,22 @@
> ##
> { 'command': 'announce-self', 'boxed': true,
> 'data' : 'AnnounceParameters'}
> +
> +##
> +# @FAILOVER_NEGOTIATED:
> +#
> +# Emitted when VIRTIO_NET_F_STANDBY was enabled during feature negotiation.
> +# Failover primary devices which were hidden (not hotplugged when requested)
> +# before will now be hotplugged by the virtio-net standby device.
> +#
> +# device-id: QEMU device id of the unplugged device
@device-id is new since v5.
A quick skim of
https://www.kernel.org/doc/html/latest/networking/net_failover.html
tells me there are three devices involved: master, primary slave,
standby slave. Which one is @device-id? Or am I confused?
> +# Since: 4.2
> +#
> +# Example:
> +#
> +# <- { "event": "FAILOVER_NEGOTIATED",
> +# "data": "net1" }
> +#
> +##
> +{ 'event': 'FAILOVER_NEGOTIATED',
> + 'data': {'device-id': 'str'} }
- [PATCH v6 0/11] add failover feature for assigned network devices, Jens Freimann, 2019/10/25
- [PATCH v6 01/11] qdev/qbus: add hidden device support, Jens Freimann, 2019/10/25
- [PATCH v6 02/11] pci: add option for net failover, Jens Freimann, 2019/10/25
- [PATCH v6 03/11] pci: mark devices partially unplugged, Jens Freimann, 2019/10/25
- [PATCH v6 04/11] pci: mark device having guest unplug request pending, Jens Freimann, 2019/10/25
- [PATCH v6 05/11] qapi: add unplug primary event, Jens Freimann, 2019/10/25
- [PATCH v6 06/11] qapi: add failover negotiated event, Jens Freimann, 2019/10/25
- Re: [PATCH v6 06/11] qapi: add failover negotiated event,
Markus Armbruster <=
[PATCH v6 07/11] migration: allow unplug during migration for failover devices, Jens Freimann, 2019/10/25
[PATCH v6 08/11] migration: add new migration state wait-unplug, Jens Freimann, 2019/10/25
[PATCH v6 09/11] libqos: tolerate wait-unplug migration state, Jens Freimann, 2019/10/25