| # -*- Mode: Python -*- |
| # vim: filetype=python |
| |
| ## |
| # = Block devices |
| ## |
| |
| { 'include': 'block-core.json' } |
| |
| ## |
| # == Additional block stuff (VM related) |
| ## |
| |
| ## |
| # @BiosAtaTranslation: |
| # |
| # Policy that BIOS should use to interpret cylinder/head/sector |
| # addresses. Note that Bochs BIOS and SeaBIOS will not actually |
| # translate logical CHS to physical; instead, they will use logical |
| # block addressing. |
| # |
| # @auto: If cylinder/heads/sizes are passed, choose between none and |
| # LBA depending on the size of the disk. If they are not passed, |
| # choose none if QEMU can guess that the disk had 16 or fewer |
| # heads, large if QEMU can guess that the disk had 131072 or fewer |
| # tracks across all heads (i.e. cylinders*heads<131072), otherwise |
| # LBA. |
| # |
| # @none: The physical disk geometry is equal to the logical geometry. |
| # |
| # @lba: Assume 63 sectors per track and one of 16, 32, 64, 128 or 255 |
| # heads (if fewer than 255 are enough to cover the whole disk with |
| # 1024 cylinders/head). The number of cylinders/head is then |
| # computed based on the number of sectors and heads. |
| # |
| # @large: The number of cylinders per head is scaled down to 1024 by |
| # correspondingly scaling up the number of heads. |
| # |
| # @rechs: Same as @large, but first convert a 16-head geometry to |
| # 15-head, by proportionally scaling up the number of |
| # cylinders/head. |
| # |
| # Since: 2.0 |
| ## |
| { 'enum': 'BiosAtaTranslation', |
| 'data': ['auto', 'none', 'lba', 'large', 'rechs']} |
| |
| ## |
| # @FloppyDriveType: |
| # |
| # Type of Floppy drive to be emulated by the Floppy Disk Controller. |
| # |
| # @144: 1.44MB 3.5" drive |
| # |
| # @288: 2.88MB 3.5" drive |
| # |
| # @120: 1.2MB 5.25" drive |
| # |
| # @none: No drive connected |
| # |
| # @auto: Automatically determined by inserted media at boot |
| # |
| # Since: 2.6 |
| ## |
| { 'enum': 'FloppyDriveType', |
| 'data': ['144', '288', '120', 'none', 'auto']} |
| |
| ## |
| # @PRManagerInfo: |
| # |
| # Information about a persistent reservation manager |
| # |
| # @id: the identifier of the persistent reservation manager |
| # |
| # @connected: true if the persistent reservation manager is connected |
| # to the underlying storage or helper |
| # |
| # Since: 3.0 |
| ## |
| { 'struct': 'PRManagerInfo', |
| 'data': {'id': 'str', 'connected': 'bool'} } |
| |
| ## |
| # @query-pr-managers: |
| # |
| # Returns a list of information about each persistent reservation |
| # manager. |
| # |
| # Returns: a list of @PRManagerInfo for each persistent reservation |
| # manager |
| # |
| # Since: 3.0 |
| ## |
| { 'command': 'query-pr-managers', 'returns': ['PRManagerInfo'], |
| 'allow-preconfig': true } |
| |
| ## |
| # @eject: |
| # |
| # Ejects the medium from a removable drive. |
| # |
| # @device: Block device name |
| # |
| # @id: The name or QOM path of the guest device (since: 2.8) |
| # |
| # @force: If true, eject regardless of whether the drive is locked. |
| # If not specified, the default value is false. |
| # |
| # Features: |
| # |
| # @deprecated: Member @device is deprecated. Use @id instead. |
| # |
| # Returns: |
| # - Nothing on success |
| # - If @device is not a valid block device, DeviceNotFound |
| # |
| # Notes: Ejecting a device with no media results in success |
| # |
| # Since: 0.14 |
| # |
| # Example: |
| # |
| # -> { "execute": "eject", "arguments": { "id": "ide1-0-1" } } |
| # <- { "return": {} } |
| ## |
| { 'command': 'eject', |
| 'data': { '*device': { 'type': 'str', 'features': [ 'deprecated' ] }, |
| '*id': 'str', |
| '*force': 'bool' } } |
| |
| ## |
| # @blockdev-open-tray: |
| # |
| # Opens a block device's tray. If there is a block driver state tree |
| # inserted as a medium, it will become inaccessible to the guest (but |
| # it will remain associated to the block device, so closing the tray |
| # will make it accessible again). |
| # |
| # If the tray was already open before, this will be a no-op. |
| # |
| # Once the tray opens, a DEVICE_TRAY_MOVED event is emitted. There |
| # are cases in which no such event will be generated, these include: |
| # |
| # - if the guest has locked the tray, @force is false and the guest |
| # does not respond to the eject request |
| # - if the BlockBackend denoted by @device does not have a guest |
| # device attached to it |
| # - if the guest device does not have an actual tray |
| # |
| # @device: Block device name |
| # |
| # @id: The name or QOM path of the guest device (since: 2.8) |
| # |
| # @force: if false (the default), an eject request will be sent to the |
| # guest if it has locked the tray (and the tray will not be opened |
| # immediately); if true, the tray will be opened regardless of |
| # whether it is locked |
| # |
| # Features: |
| # |
| # @deprecated: Member @device is deprecated. Use @id instead. |
| # |
| # Since: 2.5 |
| # |
| # Example: |
| # |
| # -> { "execute": "blockdev-open-tray", |
| # "arguments": { "id": "ide0-1-0" } } |
| # |
| # <- { "timestamp": { "seconds": 1418751016, |
| # "microseconds": 716996 }, |
| # "event": "DEVICE_TRAY_MOVED", |
| # "data": { "device": "ide1-cd0", |
| # "id": "ide0-1-0", |
| # "tray-open": true } } |
| # |
| # <- { "return": {} } |
| ## |
| { 'command': 'blockdev-open-tray', |
| 'data': { '*device': { 'type': 'str', 'features': [ 'deprecated' ] }, |
| '*id': 'str', |
| '*force': 'bool' } } |
| |
| ## |
| # @blockdev-close-tray: |
| # |
| # Closes a block device's tray. If there is a block driver state tree |
| # associated with the block device (which is currently ejected), that |
| # tree will be loaded as the medium. |
| # |
| # If the tray was already closed before, this will be a no-op. |
| # |
| # @device: Block device name |
| # |
| # @id: The name or QOM path of the guest device (since: 2.8) |
| # |
| # Features: |
| # |
| # @deprecated: Member @device is deprecated. Use @id instead. |
| # |
| # Since: 2.5 |
| # |
| # Example: |
| # |
| # -> { "execute": "blockdev-close-tray", |
| # "arguments": { "id": "ide0-1-0" } } |
| # |
| # <- { "timestamp": { "seconds": 1418751345, |
| # "microseconds": 272147 }, |
| # "event": "DEVICE_TRAY_MOVED", |
| # "data": { "device": "ide1-cd0", |
| # "id": "ide0-1-0", |
| # "tray-open": false } } |
| # |
| # <- { "return": {} } |
| ## |
| { 'command': 'blockdev-close-tray', |
| 'data': { '*device': { 'type': 'str', 'features': [ 'deprecated' ] }, |
| '*id': 'str' } } |
| |
| ## |
| # @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. |
| # |
| # @id: The name or QOM path of the guest device |
| # |
| # Since: 2.12 |
| # |
| # Example: |
| # |
| # -> { "execute": "blockdev-remove-medium", |
| # "arguments": { "id": "ide0-1-0" } } |
| # |
| # <- { "error": { "class": "GenericError", |
| # "desc": "Tray of device 'ide0-1-0' is not open" } } |
| # |
| # -> { "execute": "blockdev-open-tray", |
| # "arguments": { "id": "ide0-1-0" } } |
| # |
| # <- { "timestamp": { "seconds": 1418751627, |
| # "microseconds": 549958 }, |
| # "event": "DEVICE_TRAY_MOVED", |
| # "data": { "device": "ide1-cd0", |
| # "id": "ide0-1-0", |
| # "tray-open": true } } |
| # |
| # <- { "return": {} } |
| # |
| # -> { "execute": "blockdev-remove-medium", |
| # "arguments": { "id": "ide0-1-0" } } |
| # |
| # <- { "return": {} } |
| ## |
| { 'command': 'blockdev-remove-medium', |
| 'data': { 'id': 'str' } } |
| |
| ## |
| # @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. |
| # |
| # @id: The name or QOM path of the guest device |
| # |
| # @node-name: name of a node in the block driver state graph |
| # |
| # Since: 2.12 |
| # |
| # Example: |
| # |
| # -> { "execute": "blockdev-add", |
| # "arguments": { |
| # "node-name": "node0", |
| # "driver": "raw", |
| # "file": { "driver": "file", |
| # "filename": "fedora.iso" } } } |
| # <- { "return": {} } |
| # |
| # -> { "execute": "blockdev-insert-medium", |
| # "arguments": { "id": "ide0-1-0", |
| # "node-name": "node0" } } |
| # |
| # <- { "return": {} } |
| ## |
| { 'command': 'blockdev-insert-medium', |
| 'data': { 'id': 'str', |
| 'node-name': 'str'} } |
| |
| ## |
| # @BlockdevChangeReadOnlyMode: |
| # |
| # Specifies the new read-only mode of a block device subject to the |
| # @blockdev-change-medium command. |
| # |
| # @retain: Retains the current read-only mode |
| # |
| # @read-only: Makes the device read-only |
| # |
| # @read-write: Makes the device writable |
| # |
| # Since: 2.3 |
| ## |
| { 'enum': 'BlockdevChangeReadOnlyMode', |
| 'data': ['retain', 'read-only', 'read-write'] } |
| |
| ## |
| # @blockdev-change-medium: |
| # |
| # Changes the medium inserted into a block device by ejecting the |
| # current medium and loading a new image file which is inserted as the |
| # new medium (this command combines blockdev-open-tray, |
| # blockdev-remove-medium, blockdev-insert-medium and |
| # blockdev-close-tray). |
| # |
| # @device: Block device name |
| # |
| # @id: The name or QOM path of the guest device (since: 2.8) |
| # |
| # @filename: filename of the new image to be loaded |
| # |
| # @format: format to open the new image with (defaults to the probed |
| # format) |
| # |
| # @read-only-mode: change the read-only mode of the device; defaults |
| # to 'retain' |
| # |
| # @force: if false (the default), an eject request through |
| # blockdev-open-tray will be sent to the guest if it has locked |
| # the tray (and the tray will not be opened immediately); if true, |
| # the tray will be opened regardless of whether it is locked. |
| # (since 7.1) |
| # |
| # Features: |
| # |
| # @deprecated: Member @device is deprecated. Use @id instead. |
| # |
| # Since: 2.5 |
| # |
| # Examples: |
| # |
| # 1. Change a removable medium |
| # |
| # -> { "execute": "blockdev-change-medium", |
| # "arguments": { "id": "ide0-1-0", |
| # "filename": "/srv/images/Fedora-12-x86_64-DVD.iso", |
| # "format": "raw" } } |
| # <- { "return": {} } |
| # |
| # 2. Load a read-only medium into a writable drive |
| # |
| # -> { "execute": "blockdev-change-medium", |
| # "arguments": { "id": "floppyA", |
| # "filename": "/srv/images/ro.img", |
| # "format": "raw", |
| # "read-only-mode": "retain" } } |
| # |
| # <- { "error": |
| # { "class": "GenericError", |
| # "desc": "Could not open '/srv/images/ro.img': Permission denied" } } |
| # |
| # -> { "execute": "blockdev-change-medium", |
| # "arguments": { "id": "floppyA", |
| # "filename": "/srv/images/ro.img", |
| # "format": "raw", |
| # "read-only-mode": "read-only" } } |
| # |
| # <- { "return": {} } |
| ## |
| { 'command': 'blockdev-change-medium', |
| 'data': { '*device': { 'type': 'str', 'features': [ 'deprecated' ] }, |
| '*id': 'str', |
| 'filename': 'str', |
| '*format': 'str', |
| '*force': 'bool', |
| '*read-only-mode': 'BlockdevChangeReadOnlyMode' } } |
| |
| ## |
| # @DEVICE_TRAY_MOVED: |
| # |
| # Emitted whenever the tray of a removable device is moved by the |
| # guest or by HMP/QMP commands |
| # |
| # @device: Block device name. This is always present for |
| # compatibility reasons, but it can be empty ("") if the image |
| # does not have a device name associated. |
| # |
| # @id: The name or QOM path of the guest device (since 2.8) |
| # |
| # @tray-open: true if the tray has been opened or false if it has been |
| # closed |
| # |
| # Since: 1.1 |
| # |
| # Example: |
| # |
| # <- { "event": "DEVICE_TRAY_MOVED", |
| # "data": { "device": "ide1-cd0", |
| # "id": "/machine/unattached/device[22]", |
| # "tray-open": true |
| # }, |
| # "timestamp": { "seconds": 1265044230, "microseconds": 450486 } } |
| ## |
| { 'event': 'DEVICE_TRAY_MOVED', |
| 'data': { 'device': 'str', 'id': 'str', 'tray-open': 'bool' } } |
| |
| ## |
| # @PR_MANAGER_STATUS_CHANGED: |
| # |
| # Emitted whenever the connected status of a persistent reservation |
| # manager changes. |
| # |
| # @id: The id of the PR manager object |
| # |
| # @connected: true if the PR manager is connected to a backend |
| # |
| # Since: 3.0 |
| # |
| # Example: |
| # |
| # <- { "event": "PR_MANAGER_STATUS_CHANGED", |
| # "data": { "id": "pr-helper0", |
| # "connected": true |
| # }, |
| # "timestamp": { "seconds": 1519840375, "microseconds": 450486 } } |
| ## |
| { 'event': 'PR_MANAGER_STATUS_CHANGED', |
| 'data': { 'id': 'str', 'connected': 'bool' } } |
| |
| ## |
| # @block_set_io_throttle: |
| # |
| # Change I/O throttle limits for a block drive. |
| # |
| # Since QEMU 2.4, each device with I/O limits is member of a throttle |
| # group. |
| # |
| # If two or more devices are members of the same group, the limits |
| # will apply to the combined I/O of the whole group in a round-robin |
| # fashion. Therefore, setting new I/O limits to a device will affect |
| # the whole group. |
| # |
| # The name of the group can be specified using the 'group' parameter. |
| # If the parameter is unset, it is assumed to be the current group of |
| # that device. If it's not in any group yet, the name of the device |
| # will be used as the name for its group. |
| # |
| # The 'group' parameter can also be used to move a device to a |
| # different group. In this case the limits specified in the |
| # parameters will be applied to the new group only. |
| # |
| # I/O limits can be disabled by setting all of them to 0. In this case |
| # the device will be removed from its group and the rest of its |
| # members will not be affected. The 'group' parameter is ignored. |
| # |
| # Returns: |
| # - Nothing on success |
| # - If @device is not a valid block device, DeviceNotFound |
| # |
| # Since: 1.1 |
| # |
| # Examples: |
| # |
| # -> { "execute": "block_set_io_throttle", |
| # "arguments": { "id": "virtio-blk-pci0/virtio-backend", |
| # "bps": 0, |
| # "bps_rd": 0, |
| # "bps_wr": 0, |
| # "iops": 512, |
| # "iops_rd": 0, |
| # "iops_wr": 0, |
| # "bps_max": 0, |
| # "bps_rd_max": 0, |
| # "bps_wr_max": 0, |
| # "iops_max": 0, |
| # "iops_rd_max": 0, |
| # "iops_wr_max": 0, |
| # "bps_max_length": 0, |
| # "iops_size": 0 } } |
| # <- { "return": {} } |
| # |
| # -> { "execute": "block_set_io_throttle", |
| # "arguments": { "id": "ide0-1-0", |
| # "bps": 1000000, |
| # "bps_rd": 0, |
| # "bps_wr": 0, |
| # "iops": 0, |
| # "iops_rd": 0, |
| # "iops_wr": 0, |
| # "bps_max": 8000000, |
| # "bps_rd_max": 0, |
| # "bps_wr_max": 0, |
| # "iops_max": 0, |
| # "iops_rd_max": 0, |
| # "iops_wr_max": 0, |
| # "bps_max_length": 60, |
| # "iops_size": 0 } } |
| # <- { "return": {} } |
| ## |
| { 'command': 'block_set_io_throttle', 'boxed': true, |
| 'data': 'BlockIOThrottle', |
| 'allow-preconfig': true } |
| |
| ## |
| # @block-latency-histogram-set: |
| # |
| # Manage read, write and flush latency histograms for the device. |
| # |
| # If only @id parameter is specified, remove all present latency |
| # histograms for the device. Otherwise, add/reset some of (or all) |
| # latency histograms. |
| # |
| # @id: The name or QOM path of the guest device. |
| # |
| # @boundaries: list of interval boundary values (see description in |
| # BlockLatencyHistogramInfo definition). If specified, all latency |
| # histograms are removed, and empty ones created for all io types |
| # with intervals corresponding to @boundaries (except for io |
| # types, for which specific boundaries are set through the |
| # following parameters). |
| # |
| # @boundaries-read: list of interval boundary values for read latency |
| # histogram. If specified, old read latency histogram is removed, |
| # and empty one created with intervals corresponding to |
| # @boundaries-read. The parameter has higher priority then |
| # @boundaries. |
| # |
| # @boundaries-write: list of interval boundary values for write |
| # latency histogram. |
| # |
| # @boundaries-zap: list of interval boundary values for zone append write |
| # latency histogram. |
| # |
| # @boundaries-flush: list of interval boundary values for flush |
| # latency histogram. |
| # |
| # Returns: error if device is not found or any boundary arrays are |
| # invalid. |
| # |
| # Since: 4.0 |
| # |
| # Example: |
| # |
| # set new histograms for all io types with intervals [0, 10), [10, |
| # 50), [50, 100), [100, +inf): |
| # |
| # -> { "execute": "block-latency-histogram-set", |
| # "arguments": { "id": "drive0", |
| # "boundaries": [10, 50, 100] } } |
| # <- { "return": {} } |
| # |
| # Example: |
| # |
| # set new histogram only for write, other histograms will remain not |
| # changed (or not created): |
| # |
| # -> { "execute": "block-latency-histogram-set", |
| # "arguments": { "id": "drive0", |
| # "boundaries-write": [10, 50, 100] } } |
| # <- { "return": {} } |
| # |
| # Example: |
| # |
| # set new histograms with the following intervals: read, flush: [0, |
| # 10), [10, 50), [50, 100), [100, +inf) write: [0, 1000), [1000, |
| # 5000), [5000, +inf) |
| # |
| # -> { "execute": "block-latency-histogram-set", |
| # "arguments": { "id": "drive0", |
| # "boundaries": [10, 50, 100], |
| # "boundaries-write": [1000, 5000] } } |
| # <- { "return": {} } |
| # |
| # Example: |
| # |
| # remove all latency histograms: |
| # |
| # -> { "execute": "block-latency-histogram-set", |
| # "arguments": { "id": "drive0" } } |
| # <- { "return": {} } |
| ## |
| { 'command': 'block-latency-histogram-set', |
| 'data': {'id': 'str', |
| '*boundaries': ['uint64'], |
| '*boundaries-read': ['uint64'], |
| '*boundaries-write': ['uint64'], |
| '*boundaries-zap': ['uint64'], |
| '*boundaries-flush': ['uint64'] }, |
| 'allow-preconfig': true } |
