- "data": data to write (json-string)
- "format": data format (json-string, optional)
- Possible values: "utf8" (default), "base64"
- Bug: invalid base64 is currently not rejected.
- Whitespace *is* invalid.
Example:
},
{
.name = "transaction",
- .args_type = "actions:q",
+ .args_type = "actions:q,properties:q?",
.mhandler.cmd_new = qmp_marshal_transaction,
},
- "speed": maximum speed of the streaming job, in bytes per second
(json-int)
- "granularity": granularity of the dirty bitmap, in bytes (json-int, optional)
-- "buf_size": maximum amount of data in flight from source to target, in bytes
+- "buf-size": maximum amount of data in flight from source to target, in bytes
(json-int, default 10M)
- "sync": what parts of the disk image should be copied to the destination;
possibilities include "full" for all the disk, "top" for only the sectors
EQMP
+ {
+ .name = "blockdev-mirror",
+ .args_type = "sync:s,device:B,target:B,replaces:s?,speed:i?,"
+ "on-source-error:s?,on-target-error:s?,"
+ "granularity:i?,buf-size:i?",
+ .mhandler.cmd_new = qmp_marshal_blockdev_mirror,
+ },
+
+SQMP
+blockdev-mirror
+------------
+
+Start mirroring a block device's writes to another block device. target
+specifies the target of mirror operation.
+
+Arguments:
+
+- "device": device name to operate on (json-string)
+- "target": device name to mirror to (json-string)
+- "replaces": the block driver node name to replace when finished
+ (json-string, optional)
+- "speed": maximum speed of the streaming job, in bytes per second
+ (json-int)
+- "granularity": granularity of the dirty bitmap, in bytes (json-int, optional)
+- "buf_size": maximum amount of data in flight from source to target, in bytes
+ (json-int, default 10M)
+- "sync": what parts of the disk image should be copied to the destination;
+ possibilities include "full" for all the disk, "top" for only the sectors
+ allocated in the topmost image, or "none" to only replicate new I/O
+ (MirrorSyncMode).
+- "on-source-error": the action to take on an error on the source
+ (BlockdevOnError, default 'report')
+- "on-target-error": the action to take on an error on the target
+ (BlockdevOnError, default 'report')
+
+The default value of the granularity is the image cluster size clamped
+between 4096 and 65536, if the image format defines one. If the format
+does not define a cluster size, the default value of the granularity
+is 65536.
+
+Example:
+
+-> { "execute": "blockdev-mirror", "arguments": { "device": "ide-hd0",
+ "target": "target0",
+ "sync": "full" } }
+<- { "return": {} }
+
+EQMP
{
.name = "change-backing-file",
.args_type = "device:s,image-node-name:s,backing-file:s",
another request (json-int)
- "wr_merged": number of write requests that have been merged into
another request (json-int)
+ - "idle_time_ns": time since the last I/O operation, in
+ nanoseconds. If the field is absent it means
+ that there haven't been any operations yet
+ (json-int, optional)
+ - "failed_rd_operations": number of failed read operations
+ (json-int)
+ - "failed_wr_operations": number of failed write operations
+ (json-int)
+ - "failed_flush_operations": number of failed flush operations
+ (json-int)
+ - "invalid_rd_operations": number of invalid read operations
+ (json-int)
+ - "invalid_wr_operations": number of invalid write operations
+ (json-int)
+ - "invalid_flush_operations": number of invalid flush operations
+ (json-int)
+ - "account_invalid": whether invalid operations are included in
+ the last access statistics (json-bool)
+ - "account_failed": whether failed operations are included in the
+ latency and last access statistics
+ (json-bool)
+ - "timed_stats": A json-array containing statistics collected in
+ specific intervals, with the following members:
+ - "interval_length": interval used for calculating the
+ statistics, in seconds (json-int)
+ - "min_rd_latency_ns": minimum latency of read operations in
+ the defined interval, in nanoseconds
+ (json-int)
+ - "min_wr_latency_ns": minimum latency of write operations in
+ the defined interval, in nanoseconds
+ (json-int)
+ - "min_flush_latency_ns": minimum latency of flush operations
+ in the defined interval, in
+ nanoseconds (json-int)
+ - "max_rd_latency_ns": maximum latency of read operations in
+ the defined interval, in nanoseconds
+ (json-int)
+ - "max_wr_latency_ns": maximum latency of write operations in
+ the defined interval, in nanoseconds
+ (json-int)
+ - "max_flush_latency_ns": maximum latency of flush operations
+ in the defined interval, in
+ nanoseconds (json-int)
+ - "avg_rd_latency_ns": average latency of read operations in
+ the defined interval, in nanoseconds
+ (json-int)
+ - "avg_wr_latency_ns": average latency of write operations in
+ the defined interval, in nanoseconds
+ (json-int)
+ - "avg_flush_latency_ns": average latency of flush operations
+ in the defined interval, in
+ nanoseconds (json-int)
+ - "avg_rd_queue_depth": average number of pending read
+ operations in the defined interval
+ (json-number)
+ - "avg_wr_queue_depth": average number of pending write
+ operations in the defined interval
+ (json-number).
- "parent": Contains recursively the statistics of the underlying
protocol (e.g. the host file for a qcow2 image). If there is
no underlying protocol, this field is omitted
"flush_total_times_ns":49653
"flush_operations":61,
"rd_merged":0,
- "wr_merged":0
+ "wr_merged":0,
+ "idle_time_ns":2953431879,
+ "account_invalid":true,
+ "account_failed":false
}
},
"stats":{
"rd_total_times_ns":3465673657
"flush_total_times_ns":49653,
"rd_merged":0,
- "wr_merged":0
+ "wr_merged":0,
+ "idle_time_ns":2953431879,
+ "account_invalid":true,
+ "account_failed":false
}
},
{
"rd_total_times_ns":0
"flush_total_times_ns":0,
"rd_merged":0,
- "wr_merged":0
+ "wr_merged":0,
+ "account_invalid":false,
+ "account_failed":false
}
},
{
"rd_total_times_ns":0
"flush_total_times_ns":0,
"rd_merged":0,
- "wr_merged":0
+ "wr_merged":0,
+ "account_invalid":false,
+ "account_failed":false
}
},
{
"rd_total_times_ns":0
"flush_total_times_ns":0,
"rd_merged":0,
- "wr_merged":0
+ "wr_merged":0,
+ "account_invalid":false,
+ "account_failed":false
}
}
]
- "current": true if this is the current CPU, false otherwise (json-bool)
- "halted": true if the cpu is halted, false otherwise (json-bool)
- "qom_path": path to the CPU object in the QOM tree (json-str)
+- "arch": architecture of the cpu, which determines what additional
+ keys will be present (json-str)
- Current program counter. The key's name depends on the architecture:
"pc": i386/x86_64 (json-int)
"nip": PPC (json-int)
"current":true,
"halted":false,
"qom_path":"/machine/unattached/device[0]",
+ "arch":"x86",
"pc":3227107138,
"thread_id":3134
},
"current":false,
"halted":true,
"qom_path":"/machine/unattached/device[2]",
+ "arch":"x86",
"pc":7108165,
"thread_id":3135
}
- "rdma-pin-all": pin all pages when using RDMA during migration
- "auto-converge": throttle down guest to help convergence of migration
- "zero-blocks": compress zero blocks during block migration
+- "compress": use multiple compression threads to accelerate live migration
- "events": generate events for each migration state change
+- "x-postcopy-ram": postcopy mode for live migration
Arguments:
- "rdma-pin-all" : RDMA Pin Page state (json-bool)
- "auto-converge" : Auto Converge state (json-bool)
- "zero-blocks" : Zero Blocks state (json-bool)
+ - "compress": Multiple compression threads state (json-bool)
+ - "events": Migration state change event state (json-bool)
+ - "x-postcopy-ram": postcopy ram state (json-bool)
Arguments:
Example:
-> { "execute": "query-migrate-capabilities" }
-<- { "return": [ { "state": false, "capability": "xbzrle" } ] }
+<- {"return": [
+ {"state": false, "capability": "xbzrle"},
+ {"state": false, "capability": "rdma-pin-all"},
+ {"state": false, "capability": "auto-converge"},
+ {"state": false, "capability": "zero-blocks"},
+ {"state": false, "capability": "compress"},
+ {"state": true, "capability": "events"},
+ {"state": false, "capability": "x-postcopy-ram"}
+ ]}
EQMP
- "compress-level": set compression level during migration (json-int)
- "compress-threads": set compression thread count for migration (json-int)
- "decompress-threads": set decompression thread count for migration (json-int)
+- "x-cpu-throttle-initial": set initial percentage of time guest cpus are
+ throttled for auto-converge (json-int)
+- "x-cpu-throttle-increment": set throttle increasing percentage for
+ auto-converge (json-int)
Arguments:
{
.name = "migrate-set-parameters",
.args_type =
- "compress-level:i?,compress-threads:i?,decompress-threads:i?",
+ "compress-level:i?,compress-threads:i?,decompress-threads:i?,x-cpu-throttle-initial:i?,x-cpu-throttle-increment:i?",
.mhandler.cmd_new = qmp_marshal_migrate_set_parameters,
},
SQMP
- "compress-level" : compression level value (json-int)
- "compress-threads" : compression thread count value (json-int)
- "decompress-threads" : decompression thread count value (json-int)
+ - "x-cpu-throttle-initial" : initial percentage of time guest cpus are
+ throttled (json-int)
+ - "x-cpu-throttle-increment" : throttle increasing percentage for
+ auto-converge (json-int)
Arguments:
-> { "execute": "query-migrate-parameters" }
<- {
"return": {
- "decompress-threads", 2,
- "compress-threads", 8,
- "compress-level", 1
+ "decompress-threads": 2,
+ "x-cpu-throttle-increment": 10,
+ "compress-threads": 8,
+ "compress-level": 1,
+ "x-cpu-throttle-initial": 20
}
}
{
.name = "nbd-server-start",
- .args_type = "addr:q",
+ .args_type = "addr:q,tls-creds:s?",
.mhandler.cmd_new = qmp_marshal_nbd_server_start,
},
{
EQMP
{
- .name = "blockdev-remove-medium",
+ .name = "x-blockdev-remove-medium",
.args_type = "device:s",
- .mhandler.cmd_new = qmp_marshal_blockdev_remove_medium,
+ .mhandler.cmd_new = qmp_marshal_x_blockdev_remove_medium,
},
SQMP
-blockdev-remove-medium
-----------------------
+x-blockdev-remove-medium
+------------------------
Removes a medium (a block driver state tree) from a block device. That block
device's tray must currently be open (unless there is no attached guest device).
If the tray is open and there is no medium inserted, this will be a no-op.
+This command is still a work in progress and is considered experimental.
+Stay away from it unless you want to help with its development.
+
Arguments:
- "device": block device name (json-string)
Example:
--> { "execute": "blockdev-remove-medium",
+-> { "execute": "x-blockdev-remove-medium",
"arguments": { "device": "ide1-cd0" } }
<- { "error": { "class": "GenericError",
<- { "return": {} }
--> { "execute": "blockdev-remove-medium",
+-> { "execute": "x-blockdev-remove-medium",
"arguments": { "device": "ide1-cd0" } }
<- { "return": {} }
EQMP
{
- .name = "blockdev-insert-medium",
+ .name = "x-blockdev-insert-medium",
.args_type = "device:s,node-name:s",
- .mhandler.cmd_new = qmp_marshal_blockdev_insert_medium,
+ .mhandler.cmd_new = qmp_marshal_x_blockdev_insert_medium,
},
SQMP
-blockdev-insert-medium
-----------------------
+x-blockdev-insert-medium
+------------------------
Inserts a medium (a block driver state tree) into a block device. That block
device's tray must currently be open (unless there is no attached guest device)
and there must be no medium inserted already.
+This command is still a work in progress and is considered experimental.
+Stay away from it unless you want to help with its development.
+
Arguments:
- "device": block device name (json-string)
<- { "return": {} }
--> { "execute": "blockdev-insert-medium",
+-> { "execute": "x-blockdev-insert-medium",
"arguments": { "device": "ide1-cd0",
"node-name": "node0" } }
projects / mirror_qemu.git / blobdiff