commit 5a9cb5a97f1e519f249d9ec482d498b78296b51d
author Kevin Wolf <kwolf@redhat.com> Fri Jul 27 16:07:07 2018 +0200
committer Kevin Wolf <kwolf@redhat.com> Mon Jul 30 15:35:37 2018 +0200
tree b655c8aae4475e2b0f1283dbad3c43e8599f87c2
parent 34fa110e424e9a6a9b7e0274c3d4bfee766eb7ed

block/qapi: Add 'qdev' field to query-blockstats result

Like for query-block, the client needs to identify which BlockBackend
the returned data is for. Anonymous BlockBackends are identified by the
device model they are attached to. Add a 'qdev' field that contains the
qdev ID or QOM path of the attached device model.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

block/qapi.c

diff --git a/block/qapi.c b/block/qapi.c
index e12968f..50f867d 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -597,11 +597,21 @@
             BlockStatsList *info = g_malloc0(sizeof(*info));
             AioContext *ctx = blk_get_aio_context(blk);
             BlockStats *s;
+            char *qdev;
 
             aio_context_acquire(ctx);
             s = bdrv_query_bds_stats(blk_bs(blk), true);
             s->has_device = true;
             s->device = g_strdup(blk_name(blk));
+
+            qdev = blk_get_attached_dev_id(blk);
+            if (qdev && *qdev) {
+                s->has_qdev = true;
+                s->qdev = qdev;
+            } else {
+                g_free(qdev);
+            }
+
             bdrv_query_blk_stats(s->stats, blk);
             aio_context_release(ctx);