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qmp-commands: move 'query-blockstats' doc to schema
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Marc-André Lureau
Markus Armbruster
parent
978cceab03
commit
f2eaea1884
@ -800,194 +800,6 @@ named schema entities. Entities are commands, events and various
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types. See docs/qapi-code-gen.txt for information on their structure
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and intended use.
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query-blockstats
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----------------
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Show block device statistics.
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Each device statistic information is stored in a json-object and the returned
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value is a json-array of all devices.
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Each json-object contain the following:
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- "device": device name (json-string)
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- "stats": A json-object with the statistics information, it contains:
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- "rd_bytes": bytes read (json-int)
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- "wr_bytes": bytes written (json-int)
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- "rd_operations": read operations (json-int)
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- "wr_operations": write operations (json-int)
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- "flush_operations": cache flush operations (json-int)
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- "wr_total_time_ns": total time spend on writes in nano-seconds (json-int)
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- "rd_total_time_ns": total time spend on reads in nano-seconds (json-int)
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- "flush_total_time_ns": total time spend on cache flushes in nano-seconds (json-int)
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- "wr_highest_offset": The offset after the greatest byte written to the
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BlockDriverState since it has been opened (json-int)
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- "rd_merged": number of read requests that have been merged into
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another request (json-int)
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- "wr_merged": number of write requests that have been merged into
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another request (json-int)
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- "idle_time_ns": time since the last I/O operation, in
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nanoseconds. If the field is absent it means
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that there haven't been any operations yet
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(json-int, optional)
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- "failed_rd_operations": number of failed read operations
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(json-int)
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- "failed_wr_operations": number of failed write operations
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(json-int)
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- "failed_flush_operations": number of failed flush operations
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(json-int)
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- "invalid_rd_operations": number of invalid read operations
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(json-int)
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- "invalid_wr_operations": number of invalid write operations
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(json-int)
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- "invalid_flush_operations": number of invalid flush operations
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(json-int)
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- "account_invalid": whether invalid operations are included in
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the last access statistics (json-bool)
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- "account_failed": whether failed operations are included in the
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latency and last access statistics
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(json-bool)
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- "timed_stats": A json-array containing statistics collected in
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specific intervals, with the following members:
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- "interval_length": interval used for calculating the
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statistics, in seconds (json-int)
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- "min_rd_latency_ns": minimum latency of read operations in
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the defined interval, in nanoseconds
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(json-int)
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- "min_wr_latency_ns": minimum latency of write operations in
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the defined interval, in nanoseconds
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(json-int)
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- "min_flush_latency_ns": minimum latency of flush operations
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in the defined interval, in
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nanoseconds (json-int)
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- "max_rd_latency_ns": maximum latency of read operations in
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the defined interval, in nanoseconds
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(json-int)
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- "max_wr_latency_ns": maximum latency of write operations in
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the defined interval, in nanoseconds
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(json-int)
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- "max_flush_latency_ns": maximum latency of flush operations
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in the defined interval, in
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nanoseconds (json-int)
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- "avg_rd_latency_ns": average latency of read operations in
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the defined interval, in nanoseconds
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(json-int)
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- "avg_wr_latency_ns": average latency of write operations in
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the defined interval, in nanoseconds
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(json-int)
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- "avg_flush_latency_ns": average latency of flush operations
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in the defined interval, in
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nanoseconds (json-int)
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- "avg_rd_queue_depth": average number of pending read
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operations in the defined interval
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(json-number)
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- "avg_wr_queue_depth": average number of pending write
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operations in the defined interval
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(json-number).
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- "parent": Contains recursively the statistics of the underlying
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protocol (e.g. the host file for a qcow2 image). If there is
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no underlying protocol, this field is omitted
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(json-object, optional)
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Example:
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-> { "execute": "query-blockstats" }
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<- {
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"return":[
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{
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"device":"ide0-hd0",
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"parent":{
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"stats":{
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"wr_highest_offset":3686448128,
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"wr_bytes":9786368,
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"wr_operations":751,
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"rd_bytes":122567168,
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"rd_operations":36772
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"wr_total_times_ns":313253456
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"rd_total_times_ns":3465673657
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"flush_total_times_ns":49653
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"flush_operations":61,
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"rd_merged":0,
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"wr_merged":0,
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"idle_time_ns":2953431879,
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"account_invalid":true,
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"account_failed":false
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}
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},
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"stats":{
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"wr_highest_offset":2821110784,
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"wr_bytes":9786368,
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"wr_operations":692,
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"rd_bytes":122739200,
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"rd_operations":36604
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"flush_operations":51,
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"wr_total_times_ns":313253456
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"rd_total_times_ns":3465673657
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"flush_total_times_ns":49653,
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"rd_merged":0,
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"wr_merged":0,
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"idle_time_ns":2953431879,
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"account_invalid":true,
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"account_failed":false
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}
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},
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{
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"device":"ide1-cd0",
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"stats":{
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"wr_highest_offset":0,
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"wr_bytes":0,
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"wr_operations":0,
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"rd_bytes":0,
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"rd_operations":0
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"flush_operations":0,
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"wr_total_times_ns":0
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"rd_total_times_ns":0
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"flush_total_times_ns":0,
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"rd_merged":0,
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"wr_merged":0,
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"account_invalid":false,
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"account_failed":false
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}
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},
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{
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"device":"floppy0",
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"stats":{
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"wr_highest_offset":0,
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"wr_bytes":0,
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"wr_operations":0,
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"rd_bytes":0,
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"rd_operations":0
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"flush_operations":0,
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"wr_total_times_ns":0
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"rd_total_times_ns":0
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"flush_total_times_ns":0,
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"rd_merged":0,
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"wr_merged":0,
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"account_invalid":false,
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"account_failed":false
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}
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},
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{
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"device":"sd0",
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"stats":{
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"wr_highest_offset":0,
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"wr_bytes":0,
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"wr_operations":0,
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"rd_bytes":0,
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"rd_operations":0
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"flush_operations":0,
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"wr_total_times_ns":0
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"rd_total_times_ns":0
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"flush_total_times_ns":0,
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"rd_merged":0,
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"wr_merged":0,
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"account_invalid":false,
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"account_failed":false
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}
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}
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]
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}
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blockdev-add
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------------
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@ -697,6 +697,9 @@
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# @stats: A @BlockDeviceStats for the device.
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#
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# @parent: #optional This describes the file block device if it has one.
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# Contains recursively the statistics of the underlying
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# protocol (e.g. the host file for a qcow2 image). If there is
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# no underlying protocol, this field is omitted
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#
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# @backing: #optional This describes the backing block device if it has one.
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# (Since 2.0)
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@ -724,6 +727,106 @@
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# Returns: A list of @BlockStats for each virtual block devices.
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#
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# Since: 0.14.0
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#
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# Example:
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#
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# -> { "execute": "query-blockstats" }
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# <- {
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# "return":[
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# {
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# "device":"ide0-hd0",
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# "parent":{
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# "stats":{
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# "wr_highest_offset":3686448128,
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# "wr_bytes":9786368,
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# "wr_operations":751,
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# "rd_bytes":122567168,
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# "rd_operations":36772
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# "wr_total_times_ns":313253456
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# "rd_total_times_ns":3465673657
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# "flush_total_times_ns":49653
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# "flush_operations":61,
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# "rd_merged":0,
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# "wr_merged":0,
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# "idle_time_ns":2953431879,
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# "account_invalid":true,
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# "account_failed":false
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# }
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# },
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# "stats":{
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# "wr_highest_offset":2821110784,
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# "wr_bytes":9786368,
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# "wr_operations":692,
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# "rd_bytes":122739200,
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# "rd_operations":36604
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# "flush_operations":51,
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# "wr_total_times_ns":313253456
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# "rd_total_times_ns":3465673657
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# "flush_total_times_ns":49653,
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# "rd_merged":0,
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# "wr_merged":0,
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# "idle_time_ns":2953431879,
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# "account_invalid":true,
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# "account_failed":false
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# }
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# },
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# {
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# "device":"ide1-cd0",
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# "stats":{
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# "wr_highest_offset":0,
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# "wr_bytes":0,
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# "wr_operations":0,
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# "rd_bytes":0,
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# "rd_operations":0
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# "flush_operations":0,
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# "wr_total_times_ns":0
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# "rd_total_times_ns":0
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# "flush_total_times_ns":0,
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# "rd_merged":0,
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# "wr_merged":0,
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# "account_invalid":false,
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# "account_failed":false
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# }
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# },
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# {
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# "device":"floppy0",
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# "stats":{
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# "wr_highest_offset":0,
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# "wr_bytes":0,
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# "wr_operations":0,
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# "rd_bytes":0,
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# "rd_operations":0
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# "flush_operations":0,
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# "wr_total_times_ns":0
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# "rd_total_times_ns":0
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# "flush_total_times_ns":0,
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# "rd_merged":0,
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# "wr_merged":0,
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# "account_invalid":false,
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# "account_failed":false
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# }
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# },
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# {
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# "device":"sd0",
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# "stats":{
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# "wr_highest_offset":0,
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# "wr_bytes":0,
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# "wr_operations":0,
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# "rd_bytes":0,
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# "rd_operations":0
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# "flush_operations":0,
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# "wr_total_times_ns":0
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# "rd_total_times_ns":0
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# "flush_total_times_ns":0,
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# "rd_merged":0,
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# "wr_merged":0,
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# "account_invalid":false,
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# "account_failed":false
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# }
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# }
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# ]
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# }
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#
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##
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{ 'command': 'query-blockstats',
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'data': { '*query-nodes': 'bool' },
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