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HXCOMM QMP dispatch table and documentation |
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HXCOMM Text between SQMP and EQMP is copied to the QMP documention file and |
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HXCOMM does not show up in the other formats. |
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|
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SQMP |
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QMP Supported Commands |
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---------------------- |
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|
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This document describes all commands currently supported by QMP. |
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|
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Most of the time their usage is exactly the same as in the user Monitor, this |
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means that any other document which also describe commands (the manpage, |
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QEMU's manual, etc) can and should be consulted. |
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|
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QMP has two types of commands: regular and query commands. Regular commands |
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usually change the Virtual Machine's state someway, while query commands just |
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return information. The sections below are divided accordingly. |
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|
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It's important to observe that all communication examples are formatted in |
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a reader-friendly way, so that they're easier to understand. However, in real |
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protocol usage, they're emitted as a single line. |
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|
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Also, the following notation is used to denote data flow: |
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|
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-> data issued by the Client |
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<- Server data response |
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|
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Please, refer to the QMP specification (QMP/qmp-spec.txt) for detailed |
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information on the Server command and response formats. |
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|
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NOTE: This document is temporary and will be replaced soon. |
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|
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1. Stability Considerations |
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=========================== |
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|
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The current QMP command set (described in this file) may be useful for a |
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number of use cases, however it's limited and several commands have bad |
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defined semantics, specially with regard to command completion. |
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|
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These problems are going to be solved incrementally in the next QEMU releases |
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and we're going to establish a deprecation policy for badly defined commands. |
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|
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If you're planning to adopt QMP, please observe the following: |
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|
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1. The deprecation policy will take efect and be documented soon, please |
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check the documentation of each used command as soon as a new release of |
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QEMU is available |
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|
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2. DO NOT rely on anything which is not explicit documented |
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|
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3. Errors, in special, are not documented. Applications should NOT check |
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for specific errors classes or data (it's strongly recommended to only |
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check for the "error" key) |
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|
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2. Regular Commands |
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=================== |
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|
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Server's responses in the examples below are always a success response, please |
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refer to the QMP specification for more details on error responses. |
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|
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EQMP |
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|
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{ |
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.name = "quit", |
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.args_type = "", |
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.params = "", |
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.help = "quit the emulator", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_quit, |
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}, |
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|
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SQMP |
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quit |
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---- |
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|
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Quit the emulator. |
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|
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Arguments: None. |
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|
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Example: |
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|
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-> { "execute": "quit" } |
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<- { "return": {} } |
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|
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EQMP |
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|
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{ |
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.name = "eject", |
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.args_type = "force:-f,device:B", |
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.params = "[-f] device", |
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.help = "eject a removable medium (use -f to force it)", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_eject, |
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}, |
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|
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SQMP |
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eject |
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----- |
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|
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Eject a removable medium. |
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|
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Arguments: |
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|
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- force: force ejection (json-bool, optional) |
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- device: device name (json-string) |
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|
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Example: |
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|
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-> { "execute": "eject", "arguments": { "device": "ide1-cd0" } } |
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<- { "return": {} } |
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|
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Note: The "force" argument defaults to false. |
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|
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EQMP |
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|
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{ |
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.name = "change", |
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.args_type = "device:B,target:F,arg:s?", |
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.params = "device filename [format]", |
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.help = "change a removable medium, optional format", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_change, |
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}, |
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|
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SQMP |
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change |
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------ |
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|
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Change a removable medium or VNC configuration. |
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|
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Arguments: |
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|
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- "device": device name (json-string) |
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- "target": filename or item (json-string) |
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- "arg": additional argument (json-string, optional) |
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|
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Examples: |
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|
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1. Change a removable medium |
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|
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-> { "execute": "change", |
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"arguments": { "device": "ide1-cd0", |
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"target": "/srv/images/Fedora-12-x86_64-DVD.iso" } } |
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<- { "return": {} } |
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|
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2. Change VNC password |
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|
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-> { "execute": "change", |
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"arguments": { "device": "vnc", "target": "password", |
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"arg": "foobar1" } } |
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<- { "return": {} } |
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|
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EQMP |
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|
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{ |
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.name = "screendump", |
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.args_type = "filename:F", |
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.params = "filename", |
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.help = "save screen into PPM image 'filename'", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_screen_dump, |
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}, |
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|
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SQMP |
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screendump |
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---------- |
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|
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Save screen into PPM image. |
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|
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Arguments: |
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|
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- "filename": file path (json-string) |
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|
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Example: |
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|
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-> { "execute": "screendump", "arguments": { "filename": "/tmp/image" } } |
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<- { "return": {} } |
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|
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EQMP |
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|
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{ |
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.name = "stop", |
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.args_type = "", |
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.params = "", |
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.help = "stop emulation", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_stop, |
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}, |
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|
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SQMP |
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stop |
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---- |
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|
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Stop the emulator. |
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|
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Arguments: None. |
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|
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Example: |
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|
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-> { "execute": "stop" } |
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<- { "return": {} } |
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|
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EQMP |
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|
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{ |
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.name = "cont", |
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.args_type = "", |
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.params = "", |
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.help = "resume emulation", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_cont, |
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}, |
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|
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SQMP |
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cont |
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---- |
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|
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Resume emulation. |
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|
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Arguments: None. |
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|
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Example: |
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|
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-> { "execute": "cont" } |
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<- { "return": {} } |
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|
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EQMP |
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|
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{ |
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.name = "system_reset", |
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.args_type = "", |
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.params = "", |
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.help = "reset the system", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_system_reset, |
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}, |
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|
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SQMP |
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system_reset |
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------------ |
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|
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Reset the system. |
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|
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Arguments: None. |
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|
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Example: |
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|
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-> { "execute": "system_reset" } |
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<- { "return": {} } |
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|
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EQMP |
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|
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{ |
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.name = "system_powerdown", |
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.args_type = "", |
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.params = "", |
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.help = "send system power down event", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_system_powerdown, |
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}, |
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|
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SQMP |
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system_powerdown |
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---------------- |
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|
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Send system power down event. |
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|
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Arguments: None. |
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|
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Example: |
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|
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-> { "execute": "system_powerdown" } |
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<- { "return": {} } |
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|
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EQMP |
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|
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{ |
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.name = "device_add", |
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.args_type = "device:O", |
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.params = "driver[,prop=value][,...]", |
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.help = "add device, like -device on the command line", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_device_add, |
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}, |
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|
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SQMP |
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device_add |
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---------- |
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|
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Add a device. |
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|
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Arguments: |
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|
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- "driver": the name of the new device's driver (json-string) |
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- "bus": the device's parent bus (device tree path, json-string, optional) |
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- "id": the device's ID, must be unique (json-string) |
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- device properties |
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|
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Example: |
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|
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-> { "execute": "device_add", "arguments": { "driver": "e1000", "id": "net1" } } |
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<- { "return": {} } |
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|
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Notes: |
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|
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(1) For detailed information about this command, please refer to the |
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'docs/qdev-device-use.txt' file. |
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|
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(2) It's possible to list device properties by running QEMU with the |
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"-device DEVICE,\?" command-line argument, where DEVICE is the device's name |
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|
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EQMP |
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|
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{ |
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.name = "device_del", |
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.args_type = "id:s", |
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.params = "device", |
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.help = "remove device", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_device_del, |
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}, |
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|
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SQMP |
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device_del |
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---------- |
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|
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Remove a device. |
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|
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Arguments: |
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|
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- "id": the device's ID (json-string) |
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|
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Example: |
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|
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-> { "execute": "device_del", "arguments": { "id": "net1" } } |
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<- { "return": {} } |
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|
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EQMP |
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|
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{ |
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.name = "cpu", |
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.args_type = "index:i", |
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.params = "index", |
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.help = "set the default CPU", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_cpu_set, |
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}, |
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|
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SQMP |
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cpu |
351 |
--- |
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|
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Set the default CPU. |
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|
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Arguments: |
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|
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- "index": the CPU's index (json-int) |
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|
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Example: |
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|
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-> { "execute": "cpu", "arguments": { "index": 0 } } |
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<- { "return": {} } |
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|
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Note: CPUs' indexes are obtained with the 'query-cpus' command. |
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|
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EQMP |
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|
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{ |
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.name = "memsave", |
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.args_type = "val:l,size:i,filename:s", |
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.params = "addr size file", |
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.help = "save to disk virtual memory dump starting at 'addr' of size 'size'", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_memory_save, |
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}, |
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|
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SQMP |
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memsave |
379 |
------- |
380 |
|
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Save to disk virtual memory dump starting at 'val' of size 'size'. |
382 |
|
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Arguments: |
384 |
|
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- "val": the starting address (json-int) |
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- "size": the memory size, in bytes (json-int) |
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- "filename": file path (json-string) |
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|
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Example: |
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|
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-> { "execute": "memsave", |
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"arguments": { "val": 10, |
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"size": 100, |
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"filename": "/tmp/virtual-mem-dump" } } |
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<- { "return": {} } |
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|
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Note: Depends on the current CPU. |
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|
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EQMP |
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|
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{ |
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.name = "pmemsave", |
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.args_type = "val:l,size:i,filename:s", |
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.params = "addr size file", |
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.help = "save to disk physical memory dump starting at 'addr' of size 'size'", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_physical_memory_save, |
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}, |
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|
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SQMP |
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pmemsave |
412 |
-------- |
413 |
|
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Save to disk physical memory dump starting at 'val' of size 'size'. |
415 |
|
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Arguments: |
417 |
|
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- "val": the starting address (json-int) |
419 |
- "size": the memory size, in bytes (json-int) |
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- "filename": file path (json-string) |
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|
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Example: |
423 |
|
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-> { "execute": "pmemsave", |
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"arguments": { "val": 10, |
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"size": 100, |
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"filename": "/tmp/physical-mem-dump" } } |
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<- { "return": {} } |
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|
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EQMP |
431 |
|
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{ |
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.name = "migrate", |
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.args_type = "detach:-d,blk:-b,inc:-i,uri:s", |
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.params = "[-d] [-b] [-i] uri", |
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.help = "migrate to URI (using -d to not wait for completion)" |
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"\n\t\t\t -b for migration without shared storage with" |
438 |
" full copy of disk\n\t\t\t -i for migration without " |
439 |
"shared storage with incremental copy of disk " |
440 |
"(base image shared between src and destination)", |
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.user_print = monitor_user_noop, |
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.mhandler.cmd_new = do_migrate, |
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}, |
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|
445 |
SQMP |
446 |
migrate |
447 |
------- |
448 |
|
449 |
Migrate to URI. |
450 |
|
451 |
Arguments: |
452 |
|
453 |
- "blk": block migration, full disk copy (json-bool, optional) |
454 |
- "inc": incremental disk copy (json-bool, optional) |
455 |
- "uri": Destination URI (json-string) |
456 |
|
457 |
Example: |
458 |
|
459 |
-> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } } |
460 |
<- { "return": {} } |
461 |
|
462 |
Notes: |
463 |
|
464 |
(1) The 'query-migrate' command should be used to check migration's progress |
465 |
and final result (this information is provided by the 'status' member) |
466 |
(2) All boolean arguments default to false |
467 |
(3) The user Monitor's "detach" argument is invalid in QMP and should not |
468 |
be used |
469 |
|
470 |
EQMP |
471 |
|
472 |
{ |
473 |
.name = "migrate_cancel", |
474 |
.args_type = "", |
475 |
.params = "", |
476 |
.help = "cancel the current VM migration", |
477 |
.user_print = monitor_user_noop, |
478 |
.mhandler.cmd_new = do_migrate_cancel, |
479 |
}, |
480 |
|
481 |
SQMP |
482 |
migrate_cancel |
483 |
-------------- |
484 |
|
485 |
Cancel the current migration. |
486 |
|
487 |
Arguments: None. |
488 |
|
489 |
Example: |
490 |
|
491 |
-> { "execute": "migrate_cancel" } |
492 |
<- { "return": {} } |
493 |
|
494 |
EQMP |
495 |
|
496 |
{ |
497 |
.name = "migrate_set_speed", |
498 |
.args_type = "value:f", |
499 |
.params = "value", |
500 |
.help = "set maximum speed (in bytes) for migrations", |
501 |
.user_print = monitor_user_noop, |
502 |
.mhandler.cmd_new = do_migrate_set_speed, |
503 |
}, |
504 |
|
505 |
SQMP |
506 |
migrate_set_speed |
507 |
----------------- |
508 |
|
509 |
Set maximum speed for migrations. |
510 |
|
511 |
Arguments: |
512 |
|
513 |
- "value": maximum speed, in bytes per second (json-number) |
514 |
|
515 |
Example: |
516 |
|
517 |
-> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } } |
518 |
<- { "return": {} } |
519 |
|
520 |
EQMP |
521 |
|
522 |
{ |
523 |
.name = "migrate_set_downtime", |
524 |
.args_type = "value:T", |
525 |
.params = "value", |
526 |
.help = "set maximum tolerated downtime (in seconds) for migrations", |
527 |
.user_print = monitor_user_noop, |
528 |
.mhandler.cmd_new = do_migrate_set_downtime, |
529 |
}, |
530 |
|
531 |
SQMP |
532 |
migrate_set_downtime |
533 |
-------------------- |
534 |
|
535 |
Set maximum tolerated downtime (in seconds) for migrations. |
536 |
|
537 |
Arguments: |
538 |
|
539 |
- "value": maximum downtime (json-number) |
540 |
|
541 |
Example: |
542 |
|
543 |
-> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } } |
544 |
<- { "return": {} } |
545 |
|
546 |
EQMP |
547 |
|
548 |
{ |
549 |
.name = "netdev_add", |
550 |
.args_type = "netdev:O", |
551 |
.params = "[user|tap|socket],id=str[,prop=value][,...]", |
552 |
.help = "add host network device", |
553 |
.user_print = monitor_user_noop, |
554 |
.mhandler.cmd_new = do_netdev_add, |
555 |
}, |
556 |
|
557 |
SQMP |
558 |
netdev_add |
559 |
---------- |
560 |
|
561 |
Add host network device. |
562 |
|
563 |
Arguments: |
564 |
|
565 |
- "type": the device type, "tap", "user", ... (json-string) |
566 |
- "id": the device's ID, must be unique (json-string) |
567 |
- device options |
568 |
|
569 |
Example: |
570 |
|
571 |
-> { "execute": "netdev_add", "arguments": { "type": "user", "id": "netdev1" } } |
572 |
<- { "return": {} } |
573 |
|
574 |
Note: The supported device options are the same ones supported by the '-net' |
575 |
command-line argument, which are listed in the '-help' output or QEMU's |
576 |
manual |
577 |
|
578 |
EQMP |
579 |
|
580 |
{ |
581 |
.name = "netdev_del", |
582 |
.args_type = "id:s", |
583 |
.params = "id", |
584 |
.help = "remove host network device", |
585 |
.user_print = monitor_user_noop, |
586 |
.mhandler.cmd_new = do_netdev_del, |
587 |
}, |
588 |
|
589 |
SQMP |
590 |
netdev_del |
591 |
---------- |
592 |
|
593 |
Remove host network device. |
594 |
|
595 |
Arguments: |
596 |
|
597 |
- "id": the device's ID, must be unique (json-string) |
598 |
|
599 |
Example: |
600 |
|
601 |
-> { "execute": "netdev_del", "arguments": { "id": "netdev1" } } |
602 |
<- { "return": {} } |
603 |
|
604 |
EQMP |
605 |
|
606 |
{ |
607 |
.name = "balloon", |
608 |
.args_type = "value:M", |
609 |
.params = "target", |
610 |
.help = "request VM to change its memory allocation (in MB)", |
611 |
.user_print = monitor_user_noop, |
612 |
.mhandler.cmd_async = do_balloon, |
613 |
.flags = MONITOR_CMD_ASYNC, |
614 |
}, |
615 |
|
616 |
SQMP |
617 |
balloon |
618 |
------- |
619 |
|
620 |
Request VM to change its memory allocation (in bytes). |
621 |
|
622 |
Arguments: |
623 |
|
624 |
- "value": New memory allocation (json-int) |
625 |
|
626 |
Example: |
627 |
|
628 |
-> { "execute": "balloon", "arguments": { "value": 536870912 } } |
629 |
<- { "return": {} } |
630 |
|
631 |
EQMP |
632 |
|
633 |
{ |
634 |
.name = "set_link", |
635 |
.args_type = "name:s,up:b", |
636 |
.params = "name on|off", |
637 |
.help = "change the link status of a network adapter", |
638 |
.user_print = monitor_user_noop, |
639 |
.mhandler.cmd_new = do_set_link, |
640 |
}, |
641 |
|
642 |
SQMP |
643 |
set_link |
644 |
-------- |
645 |
|
646 |
Change the link status of a network adapter. |
647 |
|
648 |
Arguments: |
649 |
|
650 |
- "name": network device name (json-string) |
651 |
- "up": status is up (json-bool) |
652 |
|
653 |
Example: |
654 |
|
655 |
-> { "execute": "set_link", "arguments": { "name": "e1000.0", "up": false } } |
656 |
<- { "return": {} } |
657 |
|
658 |
EQMP |
659 |
|
660 |
{ |
661 |
.name = "getfd", |
662 |
.args_type = "fdname:s", |
663 |
.params = "getfd name", |
664 |
.help = "receive a file descriptor via SCM rights and assign it a name", |
665 |
.user_print = monitor_user_noop, |
666 |
.mhandler.cmd_new = do_getfd, |
667 |
}, |
668 |
|
669 |
SQMP |
670 |
getfd |
671 |
----- |
672 |
|
673 |
Receive a file descriptor via SCM rights and assign it a name. |
674 |
|
675 |
Arguments: |
676 |
|
677 |
- "fdname": file descriptor name (json-string) |
678 |
|
679 |
Example: |
680 |
|
681 |
-> { "execute": "getfd", "arguments": { "fdname": "fd1" } } |
682 |
<- { "return": {} } |
683 |
|
684 |
EQMP |
685 |
|
686 |
{ |
687 |
.name = "closefd", |
688 |
.args_type = "fdname:s", |
689 |
.params = "closefd name", |
690 |
.help = "close a file descriptor previously passed via SCM rights", |
691 |
.user_print = monitor_user_noop, |
692 |
.mhandler.cmd_new = do_closefd, |
693 |
}, |
694 |
|
695 |
SQMP |
696 |
closefd |
697 |
------- |
698 |
|
699 |
Close a file descriptor previously passed via SCM rights. |
700 |
|
701 |
Arguments: |
702 |
|
703 |
- "fdname": file descriptor name (json-string) |
704 |
|
705 |
Example: |
706 |
|
707 |
-> { "execute": "closefd", "arguments": { "fdname": "fd1" } } |
708 |
<- { "return": {} } |
709 |
|
710 |
EQMP |
711 |
|
712 |
{ |
713 |
.name = "block_passwd", |
714 |
.args_type = "device:B,password:s", |
715 |
.params = "block_passwd device password", |
716 |
.help = "set the password of encrypted block devices", |
717 |
.user_print = monitor_user_noop, |
718 |
.mhandler.cmd_new = do_block_set_passwd, |
719 |
}, |
720 |
|
721 |
SQMP |
722 |
block_passwd |
723 |
------------ |
724 |
|
725 |
Set the password of encrypted block devices. |
726 |
|
727 |
Arguments: |
728 |
|
729 |
- "device": device name (json-string) |
730 |
- "password": password (json-string) |
731 |
|
732 |
Example: |
733 |
|
734 |
-> { "execute": "block_passwd", "arguments": { "device": "ide0-hd0", |
735 |
"password": "12345" } } |
736 |
<- { "return": {} } |
737 |
|
738 |
EQMP |
739 |
|
740 |
{ |
741 |
.name = "qmp_capabilities", |
742 |
.args_type = "", |
743 |
.params = "", |
744 |
.help = "enable QMP capabilities", |
745 |
.user_print = monitor_user_noop, |
746 |
.mhandler.cmd_new = do_qmp_capabilities, |
747 |
}, |
748 |
|
749 |
SQMP |
750 |
qmp_capabilities |
751 |
---------------- |
752 |
|
753 |
Enable QMP capabilities. |
754 |
|
755 |
Arguments: None. |
756 |
|
757 |
Example: |
758 |
|
759 |
-> { "execute": "qmp_capabilities" } |
760 |
<- { "return": {} } |
761 |
|
762 |
Note: This command must be issued before issuing any other command. |
763 |
|
764 |
3. Query Commands |
765 |
================= |
766 |
|
767 |
HXCOMM Each query command below is inside a SQMP/EQMP section, do NOT change |
768 |
HXCOMM this! We will possibly move query commands definitions inside those |
769 |
HXCOMM sections, just like regular commands. |
770 |
|
771 |
EQMP |
772 |
|
773 |
SQMP |
774 |
query-version |
775 |
------------- |
776 |
|
777 |
Show QEMU version. |
778 |
|
779 |
Return a json-object with the following information: |
780 |
|
781 |
- "qemu": A json-object containing three integer values: |
782 |
- "major": QEMU's major version (json-int) |
783 |
- "minor": QEMU's minor version (json-int) |
784 |
- "micro": QEMU's micro version (json-int) |
785 |
- "package": package's version (json-string) |
786 |
|
787 |
Example: |
788 |
|
789 |
-> { "execute": "query-version" } |
790 |
<- { |
791 |
"return":{ |
792 |
"qemu":{ |
793 |
"major":0, |
794 |
"minor":11, |
795 |
"micro":5 |
796 |
}, |
797 |
"package":"" |
798 |
} |
799 |
} |
800 |
|
801 |
EQMP |
802 |
|
803 |
SQMP |
804 |
query-commands |
805 |
-------------- |
806 |
|
807 |
List QMP available commands. |
808 |
|
809 |
Each command is represented by a json-object, the returned value is a json-array |
810 |
of all commands. |
811 |
|
812 |
Each json-object contain: |
813 |
|
814 |
- "name": command's name (json-string) |
815 |
|
816 |
Example: |
817 |
|
818 |
-> { "execute": "query-commands" } |
819 |
<- { |
820 |
"return":[ |
821 |
{ |
822 |
"name":"query-balloon" |
823 |
}, |
824 |
{ |
825 |
"name":"system_powerdown" |
826 |
} |
827 |
] |
828 |
} |
829 |
|
830 |
Note: This example has been shortened as the real response is too long. |
831 |
|
832 |
EQMP |
833 |
|
834 |
SQMP |
835 |
query-chardev |
836 |
------------- |
837 |
|
838 |
Each device is represented by a json-object. The returned value is a json-array |
839 |
of all devices. |
840 |
|
841 |
Each json-object contain the following: |
842 |
|
843 |
- "label": device's label (json-string) |
844 |
- "filename": device's file (json-string) |
845 |
|
846 |
Example: |
847 |
|
848 |
-> { "execute": "query-chardev" } |
849 |
<- { |
850 |
"return":[ |
851 |
{ |
852 |
"label":"monitor", |
853 |
"filename":"stdio" |
854 |
}, |
855 |
{ |
856 |
"label":"serial0", |
857 |
"filename":"vc" |
858 |
} |
859 |
] |
860 |
} |
861 |
|
862 |
EQMP |
863 |
|
864 |
SQMP |
865 |
query-block |
866 |
----------- |
867 |
|
868 |
Show the block devices. |
869 |
|
870 |
Each block device information is stored in a json-object and the returned value |
871 |
is a json-array of all devices. |
872 |
|
873 |
Each json-object contain the following: |
874 |
|
875 |
- "device": device name (json-string) |
876 |
- "type": device type (json-string) |
877 |
- Possible values: "hd", "cdrom", "floppy", "unknown" |
878 |
- "removable": true if the device is removable, false otherwise (json-bool) |
879 |
- "locked": true if the device is locked, false otherwise (json-bool) |
880 |
- "inserted": only present if the device is inserted, it is a json-object |
881 |
containing the following: |
882 |
- "file": device file name (json-string) |
883 |
- "ro": true if read-only, false otherwise (json-bool) |
884 |
- "drv": driver format name (json-string) |
885 |
- Possible values: "blkdebug", "bochs", "cloop", "cow", "dmg", |
886 |
"file", "file", "ftp", "ftps", "host_cdrom", |
887 |
"host_device", "host_floppy", "http", "https", |
888 |
"nbd", "parallels", "qcow", "qcow2", "raw", |
889 |
"tftp", "vdi", "vmdk", "vpc", "vvfat" |
890 |
- "backing_file": backing file name (json-string, optional) |
891 |
- "encrypted": true if encrypted, false otherwise (json-bool) |
892 |
|
893 |
Example: |
894 |
|
895 |
-> { "execute": "query-block" } |
896 |
<- { |
897 |
"return":[ |
898 |
{ |
899 |
"device":"ide0-hd0", |
900 |
"locked":false, |
901 |
"removable":false, |
902 |
"inserted":{ |
903 |
"ro":false, |
904 |
"drv":"qcow2", |
905 |
"encrypted":false, |
906 |
"file":"disks/test.img" |
907 |
}, |
908 |
"type":"hd" |
909 |
}, |
910 |
{ |
911 |
"device":"ide1-cd0", |
912 |
"locked":false, |
913 |
"removable":true, |
914 |
"type":"cdrom" |
915 |
}, |
916 |
{ |
917 |
"device":"floppy0", |
918 |
"locked":false, |
919 |
"removable":true, |
920 |
"type": "floppy" |
921 |
}, |
922 |
{ |
923 |
"device":"sd0", |
924 |
"locked":false, |
925 |
"removable":true, |
926 |
"type":"floppy" |
927 |
} |
928 |
] |
929 |
} |
930 |
|
931 |
EQMP |
932 |
|
933 |
SQMP |
934 |
query-blockstats |
935 |
---------------- |
936 |
|
937 |
Show block device statistics. |
938 |
|
939 |
Each device statistic information is stored in a json-object and the returned |
940 |
value is a json-array of all devices. |
941 |
|
942 |
Each json-object contain the following: |
943 |
|
944 |
- "device": device name (json-string) |
945 |
- "stats": A json-object with the statistics information, it contains: |
946 |
- "rd_bytes": bytes read (json-int) |
947 |
- "wr_bytes": bytes written (json-int) |
948 |
- "rd_operations": read operations (json-int) |
949 |
- "wr_operations": write operations (json-int) |
950 |
- "wr_highest_offset": Highest offset of a sector written since the |
951 |
BlockDriverState has been opened (json-int) |
952 |
- "parent": Contains recursively the statistics of the underlying |
953 |
protocol (e.g. the host file for a qcow2 image). If there is |
954 |
no underlying protocol, this field is omitted |
955 |
(json-object, optional) |
956 |
|
957 |
Example: |
958 |
|
959 |
-> { "execute": "query-blockstats" } |
960 |
<- { |
961 |
"return":[ |
962 |
{ |
963 |
"device":"ide0-hd0", |
964 |
"parent":{ |
965 |
"stats":{ |
966 |
"wr_highest_offset":3686448128, |
967 |
"wr_bytes":9786368, |
968 |
"wr_operations":751, |
969 |
"rd_bytes":122567168, |
970 |
"rd_operations":36772 |
971 |
} |
972 |
}, |
973 |
"stats":{ |
974 |
"wr_highest_offset":2821110784, |
975 |
"wr_bytes":9786368, |
976 |
"wr_operations":692, |
977 |
"rd_bytes":122739200, |
978 |
"rd_operations":36604 |
979 |
} |
980 |
}, |
981 |
{ |
982 |
"device":"ide1-cd0", |
983 |
"stats":{ |
984 |
"wr_highest_offset":0, |
985 |
"wr_bytes":0, |
986 |
"wr_operations":0, |
987 |
"rd_bytes":0, |
988 |
"rd_operations":0 |
989 |
} |
990 |
}, |
991 |
{ |
992 |
"device":"floppy0", |
993 |
"stats":{ |
994 |
"wr_highest_offset":0, |
995 |
"wr_bytes":0, |
996 |
"wr_operations":0, |
997 |
"rd_bytes":0, |
998 |
"rd_operations":0 |
999 |
} |
1000 |
}, |
1001 |
{ |
1002 |
"device":"sd0", |
1003 |
"stats":{ |
1004 |
"wr_highest_offset":0, |
1005 |
"wr_bytes":0, |
1006 |
"wr_operations":0, |
1007 |
"rd_bytes":0, |
1008 |
"rd_operations":0 |
1009 |
} |
1010 |
} |
1011 |
] |
1012 |
} |
1013 |
|
1014 |
EQMP |
1015 |
|
1016 |
SQMP |
1017 |
query-cpus |
1018 |
---------- |
1019 |
|
1020 |
Show CPU information. |
1021 |
|
1022 |
Return a json-array. Each CPU is represented by a json-object, which contains: |
1023 |
|
1024 |
- "CPU": CPU index (json-int) |
1025 |
- "current": true if this is the current CPU, false otherwise (json-bool) |
1026 |
- "halted": true if the cpu is halted, false otherwise (json-bool) |
1027 |
- Current program counter. The key's name depends on the architecture: |
1028 |
"pc": i386/x86_64 (json-int) |
1029 |
"nip": PPC (json-int) |
1030 |
"pc" and "npc": sparc (json-int) |
1031 |
"PC": mips (json-int) |
1032 |
|
1033 |
Example: |
1034 |
|
1035 |
-> { "execute": "query-cpus" } |
1036 |
<- { |
1037 |
"return":[ |
1038 |
{ |
1039 |
"CPU":0, |
1040 |
"current":true, |
1041 |
"halted":false, |
1042 |
"pc":3227107138 |
1043 |
}, |
1044 |
{ |
1045 |
"CPU":1, |
1046 |
"current":false, |
1047 |
"halted":true, |
1048 |
"pc":7108165 |
1049 |
} |
1050 |
] |
1051 |
} |
1052 |
|
1053 |
EQMP |
1054 |
|
1055 |
SQMP |
1056 |
query-pci |
1057 |
--------- |
1058 |
|
1059 |
PCI buses and devices information. |
1060 |
|
1061 |
The returned value is a json-array of all buses. Each bus is represented by |
1062 |
a json-object, which has a key with a json-array of all PCI devices attached |
1063 |
to it. Each device is represented by a json-object. |
1064 |
|
1065 |
The bus json-object contains the following: |
1066 |
|
1067 |
- "bus": bus number (json-int) |
1068 |
- "devices": a json-array of json-objects, each json-object represents a |
1069 |
PCI device |
1070 |
|
1071 |
The PCI device json-object contains the following: |
1072 |
|
1073 |
- "bus": identical to the parent's bus number (json-int) |
1074 |
- "slot": slot number (json-int) |
1075 |
- "function": function number (json-int) |
1076 |
- "class_info": a json-object containing: |
1077 |
- "desc": device class description (json-string, optional) |
1078 |
- "class": device class number (json-int) |
1079 |
- "id": a json-object containing: |
1080 |
- "device": device ID (json-int) |
1081 |
- "vendor": vendor ID (json-int) |
1082 |
- "irq": device's IRQ if assigned (json-int, optional) |
1083 |
- "qdev_id": qdev id string (json-string) |
1084 |
- "pci_bridge": It's a json-object, only present if this device is a |
1085 |
PCI bridge, contains: |
1086 |
- "bus": bus number (json-int) |
1087 |
- "secondary": secondary bus number (json-int) |
1088 |
- "subordinate": subordinate bus number (json-int) |
1089 |
- "io_range": I/O memory range information, a json-object with the |
1090 |
following members: |
1091 |
- "base": base address, in bytes (json-int) |
1092 |
- "limit": limit address, in bytes (json-int) |
1093 |
- "memory_range": memory range information, a json-object with the |
1094 |
following members: |
1095 |
- "base": base address, in bytes (json-int) |
1096 |
- "limit": limit address, in bytes (json-int) |
1097 |
- "prefetchable_range": Prefetchable memory range information, a |
1098 |
json-object with the following members: |
1099 |
- "base": base address, in bytes (json-int) |
1100 |
- "limit": limit address, in bytes (json-int) |
1101 |
- "devices": a json-array of PCI devices if there's any attached, each |
1102 |
each element is represented by a json-object, which contains |
1103 |
the same members of the 'PCI device json-object' described |
1104 |
above (optional) |
1105 |
- "regions": a json-array of json-objects, each json-object represents a |
1106 |
memory region of this device |
1107 |
|
1108 |
The memory range json-object contains the following: |
1109 |
|
1110 |
- "base": base memory address (json-int) |
1111 |
- "limit": limit value (json-int) |
1112 |
|
1113 |
The region json-object can be an I/O region or a memory region, an I/O region |
1114 |
json-object contains the following: |
1115 |
|
1116 |
- "type": "io" (json-string, fixed) |
1117 |
- "bar": BAR number (json-int) |
1118 |
- "address": memory address (json-int) |
1119 |
- "size": memory size (json-int) |
1120 |
|
1121 |
A memory region json-object contains the following: |
1122 |
|
1123 |
- "type": "memory" (json-string, fixed) |
1124 |
- "bar": BAR number (json-int) |
1125 |
- "address": memory address (json-int) |
1126 |
- "size": memory size (json-int) |
1127 |
- "mem_type_64": true or false (json-bool) |
1128 |
- "prefetch": true or false (json-bool) |
1129 |
|
1130 |
Example: |
1131 |
|
1132 |
-> { "execute": "query-pci" } |
1133 |
<- { |
1134 |
"return":[ |
1135 |
{ |
1136 |
"bus":0, |
1137 |
"devices":[ |
1138 |
{ |
1139 |
"bus":0, |
1140 |
"qdev_id":"", |
1141 |
"slot":0, |
1142 |
"class_info":{ |
1143 |
"class":1536, |
1144 |
"desc":"Host bridge" |
1145 |
}, |
1146 |
"id":{ |
1147 |
"device":32902, |
1148 |
"vendor":4663 |
1149 |
}, |
1150 |
"function":0, |
1151 |
"regions":[ |
1152 |
|
1153 |
] |
1154 |
}, |
1155 |
{ |
1156 |
"bus":0, |
1157 |
"qdev_id":"", |
1158 |
"slot":1, |
1159 |
"class_info":{ |
1160 |
"class":1537, |
1161 |
"desc":"ISA bridge" |
1162 |
}, |
1163 |
"id":{ |
1164 |
"device":32902, |
1165 |
"vendor":28672 |
1166 |
}, |
1167 |
"function":0, |
1168 |
"regions":[ |
1169 |
|
1170 |
] |
1171 |
}, |
1172 |
{ |
1173 |
"bus":0, |
1174 |
"qdev_id":"", |
1175 |
"slot":1, |
1176 |
"class_info":{ |
1177 |
"class":257, |
1178 |
"desc":"IDE controller" |
1179 |
}, |
1180 |
"id":{ |
1181 |
"device":32902, |
1182 |
"vendor":28688 |
1183 |
}, |
1184 |
"function":1, |
1185 |
"regions":[ |
1186 |
{ |
1187 |
"bar":4, |
1188 |
"size":16, |
1189 |
"address":49152, |
1190 |
"type":"io" |
1191 |
} |
1192 |
] |
1193 |
}, |
1194 |
{ |
1195 |
"bus":0, |
1196 |
"qdev_id":"", |
1197 |
"slot":2, |
1198 |
"class_info":{ |
1199 |
"class":768, |
1200 |
"desc":"VGA controller" |
1201 |
}, |
1202 |
"id":{ |
1203 |
"device":4115, |
1204 |
"vendor":184 |
1205 |
}, |
1206 |
"function":0, |
1207 |
"regions":[ |
1208 |
{ |
1209 |
"prefetch":true, |
1210 |
"mem_type_64":false, |
1211 |
"bar":0, |
1212 |
"size":33554432, |
1213 |
"address":4026531840, |
1214 |
"type":"memory" |
1215 |
}, |
1216 |
{ |
1217 |
"prefetch":false, |
1218 |
"mem_type_64":false, |
1219 |
"bar":1, |
1220 |
"size":4096, |
1221 |
"address":4060086272, |
1222 |
"type":"memory" |
1223 |
}, |
1224 |
{ |
1225 |
"prefetch":false, |
1226 |
"mem_type_64":false, |
1227 |
"bar":6, |
1228 |
"size":65536, |
1229 |
"address":-1, |
1230 |
"type":"memory" |
1231 |
} |
1232 |
] |
1233 |
}, |
1234 |
{ |
1235 |
"bus":0, |
1236 |
"qdev_id":"", |
1237 |
"irq":11, |
1238 |
"slot":4, |
1239 |
"class_info":{ |
1240 |
"class":1280, |
1241 |
"desc":"RAM controller" |
1242 |
}, |
1243 |
"id":{ |
1244 |
"device":6900, |
1245 |
"vendor":4098 |
1246 |
}, |
1247 |
"function":0, |
1248 |
"regions":[ |
1249 |
{ |
1250 |
"bar":0, |
1251 |
"size":32, |
1252 |
"address":49280, |
1253 |
"type":"io" |
1254 |
} |
1255 |
] |
1256 |
} |
1257 |
] |
1258 |
} |
1259 |
] |
1260 |
} |
1261 |
|
1262 |
Note: This example has been shortened as the real response is too long. |
1263 |
|
1264 |
EQMP |
1265 |
|
1266 |
SQMP |
1267 |
query-kvm |
1268 |
--------- |
1269 |
|
1270 |
Show KVM information. |
1271 |
|
1272 |
Return a json-object with the following information: |
1273 |
|
1274 |
- "enabled": true if KVM support is enabled, false otherwise (json-bool) |
1275 |
- "present": true if QEMU has KVM support, false otherwise (json-bool) |
1276 |
|
1277 |
Example: |
1278 |
|
1279 |
-> { "execute": "query-kvm" } |
1280 |
<- { "return": { "enabled": true, "present": true } } |
1281 |
|
1282 |
EQMP |
1283 |
|
1284 |
SQMP |
1285 |
query-status |
1286 |
------------ |
1287 |
|
1288 |
Return a json-object with the following information: |
1289 |
|
1290 |
- "running": true if the VM is running, or false if it is paused (json-bool) |
1291 |
- "singlestep": true if the VM is in single step mode, |
1292 |
false otherwise (json-bool) |
1293 |
|
1294 |
Example: |
1295 |
|
1296 |
-> { "execute": "query-status" } |
1297 |
<- { "return": { "running": true, "singlestep": false } } |
1298 |
|
1299 |
EQMP |
1300 |
|
1301 |
SQMP |
1302 |
query-mice |
1303 |
---------- |
1304 |
|
1305 |
Show VM mice information. |
1306 |
|
1307 |
Each mouse is represented by a json-object, the returned value is a json-array |
1308 |
of all mice. |
1309 |
|
1310 |
The mouse json-object contains the following: |
1311 |
|
1312 |
- "name": mouse's name (json-string) |
1313 |
- "index": mouse's index (json-int) |
1314 |
- "current": true if this mouse is receiving events, false otherwise (json-bool) |
1315 |
- "absolute": true if the mouse generates absolute input events (json-bool) |
1316 |
|
1317 |
Example: |
1318 |
|
1319 |
-> { "execute": "query-mice" } |
1320 |
<- { |
1321 |
"return":[ |
1322 |
{ |
1323 |
"name":"QEMU Microsoft Mouse", |
1324 |
"index":0, |
1325 |
"current":false, |
1326 |
"absolute":false |
1327 |
}, |
1328 |
{ |
1329 |
"name":"QEMU PS/2 Mouse", |
1330 |
"index":1, |
1331 |
"current":true, |
1332 |
"absolute":true |
1333 |
} |
1334 |
] |
1335 |
} |
1336 |
|
1337 |
EQMP |
1338 |
|
1339 |
SQMP |
1340 |
query-vnc |
1341 |
--------- |
1342 |
|
1343 |
Show VNC server information. |
1344 |
|
1345 |
Return a json-object with server information. Connected clients are returned |
1346 |
as a json-array of json-objects. |
1347 |
|
1348 |
The main json-object contains the following: |
1349 |
|
1350 |
- "enabled": true or false (json-bool) |
1351 |
- "host": server's IP address (json-string) |
1352 |
- "family": address family (json-string) |
1353 |
- Possible values: "ipv4", "ipv6", "unix", "unknown" |
1354 |
- "service": server's port number (json-string) |
1355 |
- "auth": authentication method (json-string) |
1356 |
- Possible values: "invalid", "none", "ra2", "ra2ne", "sasl", "tight", |
1357 |
"tls", "ultra", "unknown", "vencrypt", "vencrypt", |
1358 |
"vencrypt+plain", "vencrypt+tls+none", |
1359 |
"vencrypt+tls+plain", "vencrypt+tls+sasl", |
1360 |
"vencrypt+tls+vnc", "vencrypt+x509+none", |
1361 |
"vencrypt+x509+plain", "vencrypt+x509+sasl", |
1362 |
"vencrypt+x509+vnc", "vnc" |
1363 |
- "clients": a json-array of all connected clients |
1364 |
|
1365 |
Clients are described by a json-object, each one contain the following: |
1366 |
|
1367 |
- "host": client's IP address (json-string) |
1368 |
- "family": address family (json-string) |
1369 |
- Possible values: "ipv4", "ipv6", "unix", "unknown" |
1370 |
- "service": client's port number (json-string) |
1371 |
- "x509_dname": TLS dname (json-string, optional) |
1372 |
- "sasl_username": SASL username (json-string, optional) |
1373 |
|
1374 |
Example: |
1375 |
|
1376 |
-> { "execute": "query-vnc" } |
1377 |
<- { |
1378 |
"return":{ |
1379 |
"enabled":true, |
1380 |
"host":"0.0.0.0", |
1381 |
"service":"50402", |
1382 |
"auth":"vnc", |
1383 |
"family":"ipv4", |
1384 |
"clients":[ |
1385 |
{ |
1386 |
"host":"127.0.0.1", |
1387 |
"service":"50401", |
1388 |
"family":"ipv4" |
1389 |
} |
1390 |
] |
1391 |
} |
1392 |
} |
1393 |
|
1394 |
EQMP |
1395 |
|
1396 |
SQMP |
1397 |
query-name |
1398 |
---------- |
1399 |
|
1400 |
Show VM name. |
1401 |
|
1402 |
Return a json-object with the following information: |
1403 |
|
1404 |
- "name": VM's name (json-string, optional) |
1405 |
|
1406 |
Example: |
1407 |
|
1408 |
-> { "execute": "query-name" } |
1409 |
<- { "return": { "name": "qemu-name" } } |
1410 |
|
1411 |
EQMP |
1412 |
|
1413 |
SQMP |
1414 |
query-uuid |
1415 |
---------- |
1416 |
|
1417 |
Show VM UUID. |
1418 |
|
1419 |
Return a json-object with the following information: |
1420 |
|
1421 |
- "UUID": Universally Unique Identifier (json-string) |
1422 |
|
1423 |
Example: |
1424 |
|
1425 |
-> { "execute": "query-uuid" } |
1426 |
<- { "return": { "UUID": "550e8400-e29b-41d4-a716-446655440000" } } |
1427 |
|
1428 |
EQMP |
1429 |
|
1430 |
SQMP |
1431 |
query-migrate |
1432 |
------------- |
1433 |
|
1434 |
Migration status. |
1435 |
|
1436 |
Return a json-object. If migration is active there will be another json-object |
1437 |
with RAM migration status and if block migration is active another one with |
1438 |
block migration status. |
1439 |
|
1440 |
The main json-object contains the following: |
1441 |
|
1442 |
- "status": migration status (json-string) |
1443 |
- Possible values: "active", "completed", "failed", "cancelled" |
1444 |
- "ram": only present if "status" is "active", it is a json-object with the |
1445 |
following RAM information (in bytes): |
1446 |
- "transferred": amount transferred (json-int) |
1447 |
- "remaining": amount remaining (json-int) |
1448 |
- "total": total (json-int) |
1449 |
- "disk": only present if "status" is "active" and it is a block migration, |
1450 |
it is a json-object with the following disk information (in bytes): |
1451 |
- "transferred": amount transferred (json-int) |
1452 |
- "remaining": amount remaining (json-int) |
1453 |
- "total": total (json-int) |
1454 |
|
1455 |
Examples: |
1456 |
|
1457 |
1. Before the first migration |
1458 |
|
1459 |
-> { "execute": "query-migrate" } |
1460 |
<- { "return": {} } |
1461 |
|
1462 |
2. Migration is done and has succeeded |
1463 |
|
1464 |
-> { "execute": "query-migrate" } |
1465 |
<- { "return": { "status": "completed" } } |
1466 |
|
1467 |
3. Migration is done and has failed |
1468 |
|
1469 |
-> { "execute": "query-migrate" } |
1470 |
<- { "return": { "status": "failed" } } |
1471 |
|
1472 |
4. Migration is being performed and is not a block migration: |
1473 |
|
1474 |
-> { "execute": "query-migrate" } |
1475 |
<- { |
1476 |
"return":{ |
1477 |
"status":"active", |
1478 |
"ram":{ |
1479 |
"transferred":123, |
1480 |
"remaining":123, |
1481 |
"total":246 |
1482 |
} |
1483 |
} |
1484 |
} |
1485 |
|
1486 |
5. Migration is being performed and is a block migration: |
1487 |
|
1488 |
-> { "execute": "query-migrate" } |
1489 |
<- { |
1490 |
"return":{ |
1491 |
"status":"active", |
1492 |
"ram":{ |
1493 |
"total":1057024, |
1494 |
"remaining":1053304, |
1495 |
"transferred":3720 |
1496 |
}, |
1497 |
"disk":{ |
1498 |
"total":20971520, |
1499 |
"remaining":20880384, |
1500 |
"transferred":91136 |
1501 |
} |
1502 |
} |
1503 |
} |
1504 |
|
1505 |
EQMP |
1506 |
|
1507 |
SQMP |
1508 |
query-balloon |
1509 |
------------- |
1510 |
|
1511 |
Show balloon information. |
1512 |
|
1513 |
Make an asynchronous request for balloon info. When the request completes a |
1514 |
json-object will be returned containing the following data: |
1515 |
|
1516 |
- "actual": current balloon value in bytes (json-int) |
1517 |
- "mem_swapped_in": Amount of memory swapped in bytes (json-int, optional) |
1518 |
- "mem_swapped_out": Amount of memory swapped out in bytes (json-int, optional) |
1519 |
- "major_page_faults": Number of major faults (json-int, optional) |
1520 |
- "minor_page_faults": Number of minor faults (json-int, optional) |
1521 |
- "free_mem": Total amount of free and unused memory in |
1522 |
bytes (json-int, optional) |
1523 |
- "total_mem": Total amount of available memory in bytes (json-int, optional) |
1524 |
|
1525 |
Example: |
1526 |
|
1527 |
-> { "execute": "query-balloon" } |
1528 |
<- { |
1529 |
"return":{ |
1530 |
"actual":1073741824, |
1531 |
"mem_swapped_in":0, |
1532 |
"mem_swapped_out":0, |
1533 |
"major_page_faults":142, |
1534 |
"minor_page_faults":239245, |
1535 |
"free_mem":1014185984, |
1536 |
"total_mem":1044668416 |
1537 |
} |
1538 |
} |
1539 |
|
1540 |
EQMP |
1541 |
|