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Date: Thu, 10 Sep 2015 11:04:58 +0100
From: "Daniel P. Berrange" <berrange@redhat.com>
Message-ID: <20150910100458.GJ11366@redhat.com>
References: <1441878905-5272-1-git-send-email-wency@cn.fujitsu.com>
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In-Reply-To: <1441878905-5272-5-git-send-email-wency@cn.fujitsu.com>
Subject: Re: [Qemu-devel] [PATCH v3 4/5] qmp: add monitor command to
 add/remove a child
Reply-To: "Daniel P. Berrange" <berrange@redhat.com>
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To: Wen Congyang <wency@cn.fujitsu.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Alberto Garcia <berto@igalia.com>, zhanghailiang <zhang.zhanghailiang@huawei.com>, qemu block <qemu-block@nongnu.org>, Jiang Yunhong <yunhong.jiang@intel.com>, Dong Eddie <eddie.dong@intel.com>, qemu devel <qemu-devel@nongnu.org>, Markus Armbruster <armbru@redhat.com>, Gonglei <arei.gonglei@huawei.com>, Stefan Hajnoczi <stefanha@redhat.com>, Yang Hongyang <yanghy@cn.fujitsu.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>

On Thu, Sep 10, 2015 at 05:55:04PM +0800, Wen Congyang wrote:
> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
> Signed-off-by: Gonglei <arei.gonglei@huawei.com>
> ---
>  blockdev.c           | 47 ++++++++++++++++++++++++++++++++++++++++++++++
>  qapi/block-core.json | 34 +++++++++++++++++++++++++++++++++
>  qmp-commands.hx      | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 134 insertions(+)
> 
> diff --git a/qapi/block-core.json b/qapi/block-core.json
> index e68a59f..b959577 100644
> --- a/qapi/block-core.json
> +++ b/qapi/block-core.json
> @@ -2272,3 +2272,37 @@
>  ##
>  { 'command': 'block-set-write-threshold',
>    'data': { 'node-name': 'str', 'write-threshold': 'uint64' } }
> +
> +##
> +# @x-child-add
> +#
> +# Add a new child to the parent BDS. Currently only the Quorum driver
> +# implements this feature. This is useful to fix a broken quorum child.
> +#
> +# @parent: graph node name or id which the child will be added to.
> +#
> +# @child: graph node name that will be added.
> +#
> +# Note: this command is experimental, and not a stable API.
> +#
> +# Since: 2.5
> +##
> +{ 'command': 'x-child-add',
> +  'data' : { 'parent': 'str', 'child': 'str' } }
> +
> +##
> +# @child-del
> +#
> +# Remove a child from the parent BDS. Currently only the Quorum driver
> +# implements this feature. This is useful to fix a broken quorum child.
> +# Note, you can't remove a child if it would bring the quorum below its
> +# threshold.
> +#
> +# @parent: graph node name or id from which the child will removed.
> +#
> +# @child: graph node name that will be removed.
> +#
> +# Since: 2.5
> +##
> +{ 'command': 'child-del',
> +  'data' : { 'parent': 'str', 'child': 'str' } }

These command names are faaaar too generic. If this only applies to
block devices, then I'd expect something like 'block' as a prefix for
the command names. Likewise with your next hmp patch

Regards,
Daniel
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