QEMU QMP
QMP - QEMU Machine Protocol
Tips
- QEMU QMP reference
- qmp-shell
- Low-level QEMU shell on top of QMP
- https://www.nico.schottelius.org/blog/control-and-shutdown-qemu-kvm-vm-via-unix-socket/
- https://wiki.qemu.org/Documentation/QMP
-qmp unix:./qmp-sock,server- 常用命令
- system_powerdown
- system_reset
- system_wakeup
- query-status
- 开发
- schema
- https://github.com/qemu/qemu/blob/v5.1.0/qapi/qapi-schema.json
- qapi
- https://github.com/qemu/qemu/blob/v5.1.0/qga/qapi-schema.json
- guest agent
- https://github.com/qemu/qemu/blob/v5.1.0/storage-daemon/qapi/qapi-schema.json
- storage-daemon 与主 qapi 类似，但接口更少
- scripts/qapi-gen.py
- 用于生成 c 代码
- https://github.com/qemu/qemu/blob/v5.1.0/qapi/qapi-schema.json
// 服务端响应
{"QMP": {"version": {"qemu": {"micro": 0, "minor": 1, "major": 5}, "package": ""}, "capabilities": ["oob"]}}
// 协商能力
{ "execute": "qmp_capabilities" }
//
{ "return": {}}
// 查询状态
{ "execute": "query-status" }
//
{"return": {"status": "running", "singlestep": false, "running": true}}
// 查询所有命令
{ "execute": "query-commands" }
// 内存
{ "execute": "query-memdev" }
//
{"return": [{"prealloc": false, "host-nodes": [], "size": 134217728, "merge": true, "dump": true, "policy": "default", "id": "pc.ram"}]}
//
{ "execute": "system_powerdown" }
QMP 命令
| command | desc |
|---|---|
| add-fd | |
| add_client | |
| announce-self | |
| balloon | |
| block-commit | |
| block-dirty-bitmap-add | |
| block-dirty-bitmap-clear | |
| block-dirty-bitmap-disable | |
| block-dirty-bitmap-enable | |
| block-dirty-bitmap-merge | |
| block-dirty-bitmap-remove | |
| block-job-cancel | |
| block-job-complete | |
| block-job-dismiss | |
| block-job-finalize | |
| block-job-pause | |
| block-job-resume | |
| block-job-set-speed | |
| block-latency-histogram-set | |
| block-set-write-threshold | |
| block-stream | |
| block_passwd | |
| block_resize | |
| block_set_io_throttle | |
| blockdev-add | |
| blockdev-backup | |
| blockdev-change-medium | |
| blockdev-close-tray | |
| blockdev-create | |
| blockdev-del | |
| blockdev-insert-medium | |
| blockdev-mirror | |
| blockdev-open-tray | |
| blockdev-remove-medium | |
| blockdev-snapshot | |
| blockdev-snapshot-delete-internal-sync | |
| blockdev-snapshot-internal-sync | |
| blockdev-snapshot-sync | |
| change | |
| change-backing-file | |
| change-vnc-password | |
| chardev-add | |
| chardev-change | |
| chardev-remove | |
| chardev-send-break | |
| client_migrate_info | |
| closefd | |
| cont | |
| cpu-add | |
| device-list-properties | |
| device_add | |
| device_del | |
| drive-backup | |
| drive-mirror | |
| dump-guest-memory | |
| eject | |
| expire_password | |
| getfd | |
| human-monitor-command | |
| inject-nmi | |
| input-send-event | |
| job-cancel | |
| job-complete | |
| job-dismiss | |
| job-finalize | |
| job-pause | |
| job-resume | |
| memsave | |
| migrate | |
| migrate-continue | |
| migrate-incoming | |
| migrate-pause | |
| migrate-recover | |
| migrate-set-cache-size | |
| migrate-set-capabilities | |
| migrate-set-parameters | |
| migrate-start-postcopy | |
| migrate_cancel | |
| migrate_set_downtime | |
| migrate_set_speed | |
| nbd-server-add | |
| nbd-server-remove | |
| nbd-server-start | |
| nbd-server-stop | |
| netdev_add | |
| netdev_del | |
| object-add | |
| object-del | |
| pmemsave | |
| qmp_capabilities | |
| qom-get | |
| qom-list | |
| qom-list-properties | |
| qom-list-types | |
| qom-set | |
| query-acpi-ospm-status | |
| query-balloon | |
| query-block | |
| query-block-jobs | |
| query-blockstats | |
| query-chardev | |
| query-chardev-backends | |
| query-colo-status | |
| query-command-line-options | |
| query-commands | |
| query-cpu-definitions | |
| query-cpu-model-expansion | |
| query-cpus | |
| query-cpus-fast | |
| query-current-machine | |
| query-display-options | |
| query-dump | |
| query-dump-guest-memory-capability | |
| query-events | |
| query-fdsets | |
| query-hotpluggable-cpus | |
| query-iothreads | |
| query-jobs | |
| query-kvm | |
| query-machines | |
| query-memdev | |
| query-memory-devices | |
| query-memory-size-summary | |
| query-mice | |
| query-migrate | |
| query-migrate-cache-size | |
| query-migrate-capabilities | |
| query-migrate-parameters | |
| query-name | |
| query-named-block-nodes | |
| query-pci | |
| query-pr-managers | |
| query-qmp-schema | |
| query-rocker | |
| query-rocker-of-dpa-flows | |
| query-rocker-of-dpa-groups | |
| query-rocker-ports | |
| query-rx-filter | |
| query-sev | |
| query-sev-capabilities | |
| query-sev-launch-measure | |
| query-status | |
| query-target | |
| query-tpm | |
| query-tpm-models | |
| query-tpm-types | |
| query-uuid | |
| query-version | |
| query-vm-generation-id | |
| query-vnc | |
| query-vnc-servers | |
| query-xen-replication-status | |
| quit | |
| remove-fd | |
| ringbuf-read | |
| ringbuf-write | |
| rtc-reset-reinjection | |
| screendump | |
| send-key | |
| set-numa-node | |
| set_link | |
| set_password | |
| stop | |
| system_powerdown | |
| system_reset | |
| system_wakeup | |
| trace-event-get-state | |
| trace-event-set-state | |
| transaction | |
| watchdog-set-action | |
| x-blockdev-amend | |
| x-blockdev-change | |
| x-blockdev-reopen | |
| x-blockdev-set-iothread | |
| x-colo-lost-heartbeat | |
| x-debug-block-dirty-bitmap-sha256 | |
| x-debug-query-block-graph | |
| x-exit-preconfig | |
| xen-colo-do-checkpoint | |
| xen-load-devices-state | |
| xen-save-devices-state | |
| xen-set-global-dirty-log | |
| xen-set-replication |