diff options
| -rw-r--r-- | block/qapi.c | 20 | ||||
| -rw-r--r-- | hmp.c | 2 | ||||
| -rw-r--r-- | qapi/block-core.json | 11 | ||||
| -rw-r--r-- | qmp-commands.hx | 2 |
4 files changed, 25 insertions, 10 deletions
diff --git a/block/qapi.c b/block/qapi.c index d70336a012..3a14559ca0 100644 --- a/block/qapi.c +++ b/block/qapi.c @@ -300,7 +300,8 @@ static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info, qapi_free_BlockInfo(info); } -static BlockStats *bdrv_query_stats(const BlockDriverState *bs) +static BlockStats *bdrv_query_stats(const BlockDriverState *bs, + bool query_backing) { BlockStats *s; @@ -330,12 +331,12 @@ static BlockStats *bdrv_query_stats(const BlockDriverState *bs) if (bs->file) { s->has_parent = true; - s->parent = bdrv_query_stats(bs->file); + s->parent = bdrv_query_stats(bs->file, query_backing); } - if (bs->backing_hd) { + if (query_backing && bs->backing_hd) { s->has_backing = true; - s->backing = bdrv_query_stats(bs->backing_hd); + s->backing = bdrv_query_stats(bs->backing_hd, query_backing); } return s; @@ -366,17 +367,22 @@ BlockInfoList *qmp_query_block(Error **errp) return NULL; } -BlockStatsList *qmp_query_blockstats(Error **errp) +BlockStatsList *qmp_query_blockstats(bool has_query_nodes, + bool query_nodes, + Error **errp) { BlockStatsList *head = NULL, **p_next = &head; BlockDriverState *bs = NULL; - while ((bs = bdrv_next(bs))) { + /* Just to be safe if query_nodes is not always initialized */ + query_nodes = has_query_nodes && query_nodes; + + while ((bs = query_nodes ? bdrv_next_node(bs) : bdrv_next(bs))) { BlockStatsList *info = g_malloc0(sizeof(*info)); AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); - info->value = bdrv_query_stats(bs); + info->value = bdrv_query_stats(bs, !query_nodes); aio_context_release(ctx); *p_next = info; @@ -403,7 +403,7 @@ void hmp_info_blockstats(Monitor *mon, const QDict *qdict) { BlockStatsList *stats_list, *stats; - stats_list = qmp_query_blockstats(NULL); + stats_list = qmp_query_blockstats(false, false, NULL); for (stats = stats_list; stats; stats = stats->next) { if (!stats->value->has_device) { diff --git a/qapi/block-core.json b/qapi/block-core.json index de1bd45564..8e51e78e1b 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -427,11 +427,20 @@ # # Query the @BlockStats for all virtual block devices. # +# @query-nodes: #optional If true, the command will query all the block nodes +# that have a node name, in a list which will include "parent" +# information, but not "backing". +# If false or omitted, the behavior is as before - query all the +# device backends, recursively including their "parent" and +# "backing". (Since 2.3) +# # Returns: A list of @BlockStats for each virtual block devices. # # Since: 0.14.0 ## -{ 'command': 'query-blockstats', 'returns': ['BlockStats'] } +{ 'command': 'query-blockstats', + 'data': { '*query-nodes': 'bool' }, + 'returns': ['BlockStats'] } ## # @BlockdevOnError: diff --git a/qmp-commands.hx b/qmp-commands.hx index 718dd92f6a..d4b00101c7 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -2347,7 +2347,7 @@ EQMP { .name = "query-blockstats", - .args_type = "", + .args_type = "query-nodes:b?", .mhandler.cmd_new = qmp_marshal_input_query_blockstats, }, |