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Re: [Qemu-devel] [PATCH] quorum: Implement bdrv_get_specific_info
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] [PATCH] quorum: Implement bdrv_get_specific_info |
Date: |
Thu, 24 Mar 2016 11:26:26 +0800 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Thu, 03/24 11:17, Wen Congyang wrote:
> The monitor command 'query-block' or 'info block' will output the format
> specific
> information. So we can get each child's child-name after this patch. This
> useful
> for dynamic reconfiguration.
>
> Signed-off-by: Wen Congyang <address@hidden>
> ---
> block/quorum.c | 27 +++++++++++++++++++++++++++
> qapi/block-core.json | 15 ++++++++++++++-
> 2 files changed, 41 insertions(+), 1 deletion(-)
>
> diff --git a/block/quorum.c b/block/quorum.c
> index da15465..afe6c3f 100644
> --- a/block/quorum.c
> +++ b/block/quorum.c
> @@ -1054,6 +1054,31 @@ static void quorum_refresh_filename(BlockDriverState
> *bs, QDict *options)
> bs->full_open_options = opts;
> }
>
> +static ImageInfoSpecific *quorum_get_specific_info(BlockDriverState *bs)
> +{
> + int i;
> + BDRVQuorumState *s = bs->opaque;
> + ImageInfoSpecific *spec_info = g_new0(ImageInfoSpecific, 1);
> + strList **next;
> +
> + *spec_info = (ImageInfoSpecific){
> + .type = IMAGE_INFO_SPECIFIC_KIND_QUORUM,
> + .u = {
> + .quorum.data = g_new0(ImageInfoSpecificQuorum, 1),
> + },
> + };
> +
> + next = &spec_info->u.quorum.data->child_name;
> + for (i = 0; i < s->num_children; i++) {
> + *next = g_new0(strList, 1);
> + (*next)->value = g_strdup(s->children[i]->name);
> + (*next)->next = NULL;
> + next = &(*next)->next;
> + }
> +
> + return spec_info;
> +}
> +
> static BlockDriver bdrv_quorum = {
> .format_name = "quorum",
> .protocol_name = "quorum",
> @@ -1077,6 +1102,8 @@ static BlockDriver bdrv_quorum = {
>
> .is_filter = true,
> .bdrv_recurse_is_first_non_filter = quorum_recurse_is_first_non_filter,
> +
> + .bdrv_get_specific_info = quorum_get_specific_info,
> };
>
> static void bdrv_quorum_init(void)
> diff --git a/qapi/block-core.json b/qapi/block-core.json
> index b1cf77d..bd3e12d 100644
> --- a/qapi/block-core.json
> +++ b/qapi/block-core.json
> @@ -75,6 +75,18 @@
> } }
>
> ##
> +# @ImageInfoSpecificQuorum:
> +#
> +# @child-name: List of child name
> +#
> +# Since: 2.7
> +##
> +{ 'struct': 'ImageInfoSpecificQuorum',
> + 'data': {
> + 'child-name': ['str']
I think a plural key name is better here:
'children': ['str']
> + } }
> +
> +##
> # @ImageInfoSpecific:
> #
> # A discriminated record of image format specific information structures.
> @@ -85,7 +97,8 @@
> { 'union': 'ImageInfoSpecific',
> 'data': {
> 'qcow2': 'ImageInfoSpecificQCow2',
> - 'vmdk': 'ImageInfoSpecificVmdk'
> + 'vmdk': 'ImageInfoSpecificVmdk',
> + 'quorum': 'ImageInfoSpecificQuorum'
> } }
>
> ##
> --
> 2.5.5
>
>
>