block: add 'speed' optional parameter to block-stream

Allow streaming operations to be started with an initial speed limit.
This eliminates the window of time between starting streaming and
issuing block-job-set-speed.  Users should use the new optional 'speed'
parameter instead so that speed limits are in effect immediately when
the job starts.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/hmp.c b/hmp.c
index f3e5163f1e..eb96618e1e 100644
--- a/hmp.c
+++ b/hmp.c
@@ -835,8 +835,10 @@ void hmp_block_stream(Monitor *mon, const QDict *qdict)
     Error *error = NULL;
     const char *device = qdict_get_str(qdict, "device");
     const char *base = qdict_get_try_str(qdict, "base");
+    int64_t speed = qdict_get_try_int(qdict, "speed", 0);
 
-    qmp_block_stream(device, base != NULL, base, &error);
+    qmp_block_stream(device, base != NULL, base,
+                     qdict_haskey(qdict, "speed"), speed, &error);
 
     hmp_handle_error(mon, &error);
 }