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authorFam Zheng <famz@redhat.com>2014-10-31 11:32:56 +0800
committerKevin Wolf <kwolf@redhat.com>2014-12-10 10:25:29 +0100
commit4875a77950811631c26e156592e8b8df22208085 (patch)
tree8e9fe23ba2fe9389041bb76df2abdefd8998152b
parent20a9e77dfabb3e664c0873726be1540175a4fda1 (diff)
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block: Include "node-name" if present in query-blockstats
Node name is a better identifier of BDS. We will want to query statistics of a BDS node buried in the BDS graph, so reporting the node's name if there is one will do the trick. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-rw-r--r--block/qapi.c5
-rw-r--r--qapi/block-core.json5
2 files changed, 9 insertions, 1 deletions
diff --git a/block/qapi.c b/block/qapi.c
index a87a34a..d70336a 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -311,6 +311,11 @@ static BlockStats *bdrv_query_stats(const BlockDriverState *bs)
s->device = g_strdup(bdrv_get_device_name(bs));
}
+ if (bdrv_get_node_name(bs)[0]) {
+ s->has_node_name = true;
+ s->node_name = g_strdup(bdrv_get_node_name(bs));
+ }
+
s->stats = g_malloc0(sizeof(*s->stats));
s->stats->rd_bytes = bs->stats.nr_bytes[BLOCK_ACCT_READ];
s->stats->wr_bytes = bs->stats.nr_bytes[BLOCK_ACCT_WRITE];
diff --git a/qapi/block-core.json b/qapi/block-core.json
index a14e6ab..de1bd45 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -405,6 +405,8 @@
# @device: #optional If the stats are for a virtual block device, the name
# corresponding to the virtual block device.
#
+# @device: #optional The node name of the device. (Since 2.3)
+#
# @stats: A @BlockDeviceStats for the device.
#
# @parent: #optional This describes the file block device if it has one.
@@ -415,7 +417,8 @@
# Since: 0.14.0
##
{ 'type': 'BlockStats',
- 'data': {'*device': 'str', 'stats': 'BlockDeviceStats',
+ 'data': {'*device': 'str', '*node-name': 'str',
+ 'stats': 'BlockDeviceStats',
'*parent': 'BlockStats',
'*backing': 'BlockStats'} }