From 7a9877a0263561f11bae116a7639eec53a625807 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Tue, 20 Sep 2016 13:38:48 +0200 Subject: block: Accept device model name for block_set_io_throttle In order to remove the need for BlockBackend names in the external API, we want to allow qdev device names in all device related commands. This converts block_set_io_throttle to accept a qdev device name. Signed-off-by: Kevin Wolf --- blockdev.c | 12 +++++++----- docs/qmp-commands.txt | 6 ++++-- qapi/block-core.json | 8 +++++--- 3 files changed, 16 insertions(+), 10 deletions(-) diff --git a/blockdev.c b/blockdev.c index 8c8fcd6750..405145ae95 100644 --- a/blockdev.c +++ b/blockdev.c @@ -2647,10 +2647,10 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp) BlockBackend *blk; AioContext *aio_context; - blk = blk_by_name(arg->device); + blk = qmp_get_blk(arg->has_device ? arg->device : NULL, + arg->has_id ? arg->id : NULL, + errp); if (!blk) { - error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, - "Device '%s' not found", arg->device); return; } @@ -2659,7 +2659,7 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp) bs = blk_bs(blk); if (!bs) { - error_setg(errp, "Device '%s' has no medium", arg->device); + error_setg(errp, "Device has no medium"); goto out; } @@ -2723,7 +2723,9 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp) * just update the throttling group. */ if (!blk_get_public(blk)->throttle_state) { blk_io_limits_enable(blk, - arg->has_group ? arg->group : arg->device); + arg->has_group ? arg->group : + arg->has_device ? arg->device : + arg->id); } else if (arg->has_group) { blk_io_limits_update_group(blk, arg->group); } diff --git a/docs/qmp-commands.txt b/docs/qmp-commands.txt index 8b2a0ea176..41f56981af 100644 --- a/docs/qmp-commands.txt +++ b/docs/qmp-commands.txt @@ -1459,7 +1459,9 @@ Change I/O throttle limits for a block drive. Arguments: -- "device": device name (json-string) +- "device": block device name (deprecated, use @id instead) + (json-string, optional) +- "id": the name or QOM path of the guest device (json-string, optional) - "bps": total throughput limit in bytes per second (json-int) - "bps_rd": read throughput limit in bytes per second (json-int) - "bps_wr": write throughput limit in bytes per second (json-int) @@ -1483,7 +1485,7 @@ Arguments: Example: --> { "execute": "block_set_io_throttle", "arguments": { "device": "virtio0", +-> { "execute": "block_set_io_throttle", "arguments": { "id": "ide0-1-0", "bps": 1000000, "bps_rd": 0, "bps_wr": 0, diff --git a/qapi/block-core.json b/qapi/block-core.json index 1d7d4cc8a0..5f04dab027 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -1377,7 +1377,9 @@ # # A set of parameters describing block throttling. # -# @device: The name of the device +# @device: #optional Block device name (deprecated, use @id instead) +# +# @id: #optional The name or QOM path of the guest device (since: 2.8) # # @bps: total throughput limit in bytes per second # @@ -1446,8 +1448,8 @@ # Since: 1.1 ## { 'struct': 'BlockIOThrottle', - 'data': { 'device': 'str', 'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int', - 'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int', + 'data': { '*device': 'str', '*id': 'str', 'bps': 'int', 'bps_rd': 'int', + 'bps_wr': 'int', 'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int', '*bps_max': 'int', '*bps_rd_max': 'int', '*bps_wr_max': 'int', '*iops_max': 'int', '*iops_rd_max': 'int', '*iops_wr_max': 'int', -- cgit v1.2.3