From: Alberto Garcia <be...@igalia.com>
The QMP version of this command can take a qdev ID since 7a9877a02635,
but the HMP version is still using the deprecated block device name so
there's no way to refer to a block device added like this:
-blockdev node-name=disk0,driver=qcow2,file.driver=file,file.filename=hd.qcow2
-device virtio-blk-pci,id=virtio-blk-pci0,drive=disk0
This patch works around this problem by using the specified name as a
qdev ID if the block device name is not found.
Signed-off-by: Alberto Garcia <be...@igalia.com>
Reviewed-by: Eric Blake <ebl...@redhat.com>
Signed-off-by: Kevin Wolf <kw...@redhat.com>
---
hmp.c | 14 ++++++++++++--
hmp-commands.hx | 3 ++-
2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/hmp.c b/hmp.c
index 898e25f3e1..bdb340605c 100644
--- a/hmp.c
+++ b/hmp.c
@@ -1789,9 +1789,8 @@ void hmp_change(Monitor *mon, const QDict *qdict)
void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict)
{
Error *err = NULL;
+ char *device = (char *) qdict_get_str(qdict, "device");
BlockIOThrottle throttle = {
- .has_device = true,
- .device = (char *) qdict_get_str(qdict, "device"),
.bps = qdict_get_int(qdict, "bps"),
.bps_rd = qdict_get_int(qdict, "bps_rd"),
.bps_wr = qdict_get_int(qdict, "bps_wr"),
@@ -1800,6 +1799,17 @@ void hmp_block_set_io_throttle(Monitor *mon, const QDict
*qdict)
.iops_wr = qdict_get_int(qdict, "iops_wr"),
};
+ /* qmp_block_set_io_throttle has separate parameters for the
+ * (deprecated) block device name and the qdev ID but the HMP
+ * version has only one, so we must decide which one to pass. */
+ if (blk_by_name(device)) {
+ throttle.has_device = true;
+ throttle.device = device;
+ } else {
+ throttle.has_id = true;
+ throttle.id = device;
+ }
+
qmp_block_set_io_throttle(&throttle, &err);
hmp_handle_error(mon, &err);
}
diff --git a/hmp-commands.hx b/hmp-commands.hx
index 35d862a5d2..227f7eee88 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -1647,7 +1647,8 @@ ETEXI
STEXI
@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr}
@var{iops} @var{iops_rd} @var{iops_wr}
@findex block_set_io_throttle
-Change I/O throttle limits for a block drive to @var{bps} @var{bps_rd}
@var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}
+Change I/O throttle limits for a block drive to @var{bps} @var{bps_rd}
@var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}.
+@var{device} can be a block device name, a qdev ID or a QOM path.
ETEXI
{
--
2.13.6
