From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59866) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ebjgl-0004KC-Kv for qemu-devel@nongnu.org; Wed, 17 Jan 2018 04:07:20 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ebjgk-0004dg-QX for qemu-devel@nongnu.org; Wed, 17 Jan 2018 04:07:19 -0500 From: Stefan Hajnoczi Date: Wed, 17 Jan 2018 09:07:00 +0000 Message-Id: <20180117090700.25811-1-stefanha@redhat.com> Subject: [Qemu-devel] [PATCH] block: add block_set_io_throttle virtio-blk-pci QMP example List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Markus Armbruster , Eric Blake , qemu-block@nongnu.org, Kevin Wolf , Stefan Hajnoczi The block_set_io_throttle command can look up BlockBackends by the attached qdev device ID. virtio-blk-pci is a special case because the actual VirtIOBlock device is the "/virtio-backend" child of the PCI adapter device. Add a QMP schema example so clients will know how to use block_set_io_throttle on the virtio-blk-pci device. The alternative is to implement some sort of aliasing for qmp_get_blk() but that is likely to cause confusion and could break future use cases. Let's not go there. Cc: Kevin Wolf Signed-off-by: Stefan Hajnoczi --- qapi/block-core.json | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/qapi/block-core.json b/qapi/block-core.json index e94a6881b2..4e84cf29db 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -1799,6 +1799,24 @@ # Example: # # -> { "execute": "block_set_io_throttle", +# "arguments": { "id": "virtio-blk-pci0/virtio-backend", +# "bps": 0, +# "bps_rd": 0, +# "bps_wr": 0, +# "iops": 512, +# "iops_rd": 0, +# "iops_wr": 0, +# "bps_max": 0, +# "bps_rd_max": 0, +# "bps_wr_max": 0, +# "iops_max": 0, +# "iops_rd_max": 0, +# "iops_wr_max": 0, +# "bps_max_length": 0, +# "iops_size": 0 } } +# <- { "return": {} } +# +# -> { "execute": "block_set_io_throttle", # "arguments": { "id": "ide0-1-0", # "bps": 1000000, # "bps_rd": 0, -- 2.14.3