3 # QAPI block definitions (vm related)
5 # QAPI block core definitions
6 { 'include': 'block-core.json' }
11 # Policy that BIOS should use to interpret cylinder/head/sector
12 # addresses. Note that Bochs BIOS and SeaBIOS will not actually
13 # translate logical CHS to physical; instead, they will use logical
16 # @auto: If cylinder/heads/sizes are passed, choose between none and LBA
17 # depending on the size of the disk. If they are not passed,
18 # choose none if QEMU can guess that the disk had 16 or fewer
19 # heads, large if QEMU can guess that the disk had 131072 or
20 # fewer tracks across all heads (i.e. cylinders*heads<131072),
23 # @none: The physical disk geometry is equal to the logical geometry.
25 # @lba: Assume 63 sectors per track and one of 16, 32, 64, 128 or 255
26 # heads (if fewer than 255 are enough to cover the whole disk
27 # with 1024 cylinders/head). The number of cylinders/head is
28 # then computed based on the number of sectors and heads.
30 # @large: The number of cylinders per head is scaled down to 1024
31 # by correspondingly scaling up the number of heads.
33 # @rechs: Same as @large, but first convert a 16-head geometry to
34 # 15-head, by proportionally scaling up the number of
39 { 'enum': 'BiosAtaTranslation',
40 'data': ['auto', 'none', 'lba', 'large', 'rechs']}
45 # Type of Floppy drive to be emulated by the Floppy Disk Controller.
47 # @144: 1.44MB 3.5" drive
48 # @288: 2.88MB 3.5" drive
49 # @120: 1.2MB 5.25" drive
50 # @none: No drive connected
51 # @auto: Automatically determined by inserted media at boot
55 { 'enum': 'FloppyDriveType',
56 'data': ['144', '288', '120', 'none', 'auto']}
59 # @BlockdevSnapshotInternal:
61 # @device: the device name or node-name of a root node to generate the snapshot
64 # @name: the name of the internal snapshot to be created
66 # Notes: In transaction, if @name is empty, or any snapshot matching @name
67 # exists, the operation will fail. Only some image formats support it,
68 # for example, qcow2, rbd, and sheepdog.
72 { 'struct': 'BlockdevSnapshotInternal',
73 'data': { 'device': 'str', 'name': 'str' } }
76 # @blockdev-snapshot-internal-sync:
78 # Synchronously take an internal snapshot of a block device, when the format
79 # of the image used supports it.
81 # For the arguments, see the documentation of BlockdevSnapshotInternal.
83 # Returns: nothing on success
84 # If @device is not a valid block device, GenericError
85 # If any snapshot matching @name exists, or @name is empty,
87 # If the format of the image used does not support it,
88 # BlockFormatFeatureNotSupported
92 { 'command': 'blockdev-snapshot-internal-sync',
93 'data': 'BlockdevSnapshotInternal' }
96 # @blockdev-snapshot-delete-internal-sync:
98 # Synchronously delete an internal snapshot of a block device, when the format
99 # of the image used support it. The snapshot is identified by name or id or
100 # both. One of the name or id is required. Return SnapshotInfo for the
101 # successfully deleted snapshot.
103 # @device: the device name or node-name of a root node to delete the snapshot
106 # @id: optional the snapshot's ID to be deleted
108 # @name: optional the snapshot's name to be deleted
110 # Returns: SnapshotInfo on success
111 # If @device is not a valid block device, GenericError
112 # If snapshot not found, GenericError
113 # If the format of the image used does not support it,
114 # BlockFormatFeatureNotSupported
115 # If @id and @name are both not specified, GenericError
119 { 'command': 'blockdev-snapshot-delete-internal-sync',
120 'data': { 'device': 'str', '*id': 'str', '*name': 'str'},
121 'returns': 'SnapshotInfo' }
126 # Ejects a device from a removable drive.
128 # @device: #optional Block device name (deprecated, use @id instead)
130 # @id: #optional The name or QOM path of the guest device (since: 2.8)
132 # @force: @optional If true, eject regardless of whether the drive is locked.
133 # If not specified, the default value is false.
135 # Returns: Nothing on success
136 # If @device is not a valid block device, DeviceNotFound
138 # Notes: Ejecting a device will no media results in success
142 { 'command': 'eject',
143 'data': { '*device': 'str',
150 # Start an NBD server listening on the given host and port. Block
151 # devices can then be exported using @nbd-server-add. The NBD
152 # server will present them as named exports; for example, another
153 # QEMU instance could refer to them as "nbd:HOST:PORT:exportname=NAME".
155 # @addr: Address on which to listen.
156 # @tls-creds: (optional) ID of the TLS credentials object. Since 2.6
158 # Returns: error if the server is already running.
162 { 'command': 'nbd-server-start',
163 'data': { 'addr': 'SocketAddress',
164 '*tls-creds': 'str'} }
169 # Export a block node to QEMU's embedded NBD server.
171 # @device: The device name or node name of the node to be exported
173 # @writable: Whether clients should be able to write to the device via the
174 # NBD connection (default false). #optional
176 # Returns: error if the device is already marked for export.
180 { 'command': 'nbd-server-add', 'data': {'device': 'str', '*writable': 'bool'} }
185 # Stop QEMU's embedded NBD server, and unregister all devices previously
186 # added via @nbd-server-add.
190 { 'command': 'nbd-server-stop' }
193 # @DEVICE_TRAY_MOVED:
195 # Emitted whenever the tray of a removable device is moved by the guest or by
198 # @device: Block device name. This is always present for compatibility
199 # reasons, but it can be empty ("") if the image does not
200 # have a device name associated.
202 # @id: The name or QOM path of the guest device (since 2.8)
204 # @tray-open: true if the tray has been opened or false if it has been closed
208 { 'event': 'DEVICE_TRAY_MOVED',
209 'data': { 'device': 'str', 'id': 'str', 'tray-open': 'bool' } }
214 # An enumeration of the quorum operation types
216 # @read: read operation
218 # @write: write operation
220 # @flush: flush operation
224 { 'enum': 'QuorumOpType',
225 'data': [ 'read', 'write', 'flush' ] }