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Diffstat (limited to 'qapi-schema.json')
| -rw-r--r-- | qapi-schema.json | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/qapi-schema.json b/qapi-schema.json index 5e3570e53d..45494d8af8 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -437,6 +437,73 @@ { 'command': 'query-block', 'returns': ['BlockInfo'] } ## +# @BlockDeviceStats: +# +# Statistics of a virtual block device or a block backing device. +# +# @rd_bytes: The number of bytes read by the device. +# +# @wr_bytes: The number of bytes written by the device. +# +# @rd_operations: The number of read operations performed by the device. +# +# @wr_operations: The number of write operations performed by the device. +# +# @flush_operations: The number of cache flush operations performed by the +# device (since 0.15.0) +# +# @flush_total_time_ns: Total time spend on cache flushes in nano-seconds +# (since 0.15.0). +# +# @wr_total_time_ns: Total time spend on writes in nano-seconds (since 0.15.0). +# +# @rd_total_time_ns: Total_time_spend on reads in nano-seconds (since 0.15.0). +# +# @wr_highest_offset: The offset after the greatest byte written to the +# device. The intended use of this information is for +# growable sparse files (like qcow2) that are used on top +# of a physical device. +# +# Since: 0.14.0 +## +{ 'type': 'BlockDeviceStats', + 'data': {'rd_bytes': 'int', 'wr_bytes': 'int', 'rd_operations': 'int', + 'wr_operations': 'int', 'flush_operations': 'int', + 'flush_total_time_ns': 'int', 'wr_total_time_ns': 'int', + 'rd_total_time_ns': 'int', 'wr_highest_offset': 'int' } } + +## +# @BlockStats: +# +# Statistics of a virtual block device or a block backing device. +# +# @device: #optional If the stats are for a virtual block device, the name +# corresponding to the virtual block device. +# +# @stats: A @BlockDeviceStats for the device. +# +# @parent: #optional This may point to the backing block device if this is a +# a virtual block device. If it's a backing block, this will point +# to the backing file is one is present. +# +# Since: 0.14.0 +## +{ 'type': 'BlockStats', + 'data': {'*device': 'str', 'stats': 'BlockDeviceStats', + '*parent': 'BlockStats'} } + +## +# @query-blockstats: +# +# Query the @BlockStats for all virtual block devices. +# +# Returns: A list of @BlockStats for each virtual block devices. +# +# Since: 0.14.0 +## +{ 'command': 'query-blockstats', 'returns': ['BlockStats'] } + +## # @quit: # # This command will cause the QEMU process to exit gracefully. While every |