This information can be useful both for debugging and for management tools trying to configure guest devices with the optimal limits (possibly across multiple hosts). There is no reason not to make it available, so just add it both in the monitor (QMP and HMP) and in 'qemu-img info'.
v2: - Improved QAPI documentation and adjusted formatting [Markus] - Made the same improvements to BlockLimits comments (new patch 1) - Added a qemu-img info option to specify the cache mode (new patch 4) Kevin Wolf (4): block: Improve comments in BlockLimits block: Expose block limits for images in QMP qemu-img info: Optionally show block limits qemu-img: Add cache mode option qapi/block-core.json | 66 ++++++++++++++++++++++++++++++++ docs/tools/qemu-img.rst | 6 ++- include/block/block_int-common.h | 30 ++++++++------- include/block/qapi.h | 2 +- block/qapi.c | 66 ++++++++++++++++++++++++++++++-- qemu-img.c | 40 +++++++++++++++---- qemu-img-cmds.hx | 4 +- tests/qemu-iotests/184 | 5 ++- tests/qemu-iotests/184.out | 8 ---- tests/qemu-iotests/common.filter | 3 +- 10 files changed, 191 insertions(+), 39 deletions(-) -- 2.51.0
