# -*- Mode: Python -*-
# vim: filetype=python
##
# == Block device exports
##
{ 'include': 'sockets.json' }
##
# @NbdServerOptions:
#
# Keep this type consistent with the nbd-server-start arguments. The only
# intended difference is using SocketAddress instead of SocketAddressLegacy.
#
# @addr: Address on which to listen.
# @tls-creds: ID of the TLS credentials object (since 2.6).
# @tls-authz: ID of the QAuthZ authorization object used to validate
# the client's x509 distinguished name. This object is
# is only resolved at time of use, so can be deleted and
# recreated on the fly while the NBD server is active.
# If missing, it will default to denying access (since 4.0).
# @max-connections: The maximum number of connections to allow at the same
# time, 0 for unlimited. (since 5.2; default: 0)
#
# Since: 4.2
##
{ 'struct': 'NbdServerOptions',
'data': { 'addr': 'SocketAddress',
'*tls-creds': 'str',
'*tls-authz': 'str',
'*max-connections': 'uint32' } }
##
# @nbd-server-start:
#
# Start an NBD server listening on the given host and port. Block
# devices can then be exported using @nbd-server-add. The NBD
# server will present them as named exports; for example, another
# QEMU instance could refer to them as "nbd:HOST:PORT:exportname=NAME".
#
# Keep this type consistent with the NbdServerOptions type. The only intended
# difference is using SocketAddressLegacy instead of SocketAddress.
#
# @addr: Address on which to listen.
# @tls-creds: ID of the TLS credentials object (since 2.6).
# @tls-authz: ID of the QAuthZ authorization object used to validate
# the client's x509 distinguished name. This object is
# is only resolved at time of use, so can be deleted and
# recreated on the fly while the NBD server is active.
# If missing, it will default to denying access (since 4.0).
# @max-connections: The maximum number of connections to allow at the same
# time, 0 for unlimited. (since 5.2; default: 0)
#
# Returns: error if the server is already running.
#
# Since: 1.3.0
##
{ 'command': 'nbd-server-start',
'data': { 'addr': 'SocketAddressLegacy',
'*tls-creds': 'str',
'*tls-authz': 'str',
'*max-connections': 'uint32' } }
##
# @BlockExportOptionsNbd:
#
# An NBD block export (options shared between nbd-server-add and the NBD branch
# of block-export-add).
#
# @name: Export name. If unspecified, the @device parameter is used as the
# export name. (Since 2.12)
#
# @description: Free-form description of the export, up to 4096 bytes.
# (Since 5.0)
#
# @writable: Whether clients should be able to write to the device via the
# NBD connection (default false).
#
# @bitmap: Also export the dirty bitmap reachable from @device, so the
# NBD client can use NBD_OPT_SET_META_CONTEXT with
# "qemu:dirty-bitmap:NAME" to inspect the bitmap. (since 4.0)
#
# Since: 5.0
##
{ 'struct': 'BlockExportOptionsNbd',
'data': { '*name': 'str', '*description': 'str',
'*writable': 'bool', '*bitmap': 'str' } }
##
# @NbdServerAddOptions:
#
# An NBD block export.
#
# @device: The device name or node name of the node to be exported
#
# Since: 5.0
##
{ 'struct': 'NbdServerAddOptions',
'base': 'BlockExportOptionsNbd',
'data': { 'device': 'str' } }
##
# @nbd-server-add:
#
# Export a block node to QEMU's embedded NBD server.
#
# The export name will be used as the id for the resulting block export.
#
# Returns: error if the server is not running, or export with the same name
# already exists.
#
# Since: 1.3.0
##
{ 'command': 'nbd-server-add',
'data': 'NbdServerAddOptions', 'boxed': true }
##
# @NbdServerRemoveMode:
#
# Mode for removing an NBD export.
#
# @safe: Remove export if there are no existing connections, fail otherwise.
#
# @hard: Drop all connections immediately and remove export.
#
# Potential additional modes to be added in the future:
#
# hide: Just hide export from new clients, leave existing connections as is.
# Remove export after all clients are disconnected.
#
# soft: Hide export from new clients, answer with ESHUTDOWN for all further
# requests from existing clients.
#
# Since: 2.12
##
{'enum': 'NbdServerRemoveMode', 'data': ['safe', 'hard']}
##
# @nbd-server-remove:
#
# Remove NBD export by name.
#
# @name: Export name.
#
# @mode: Mode of command operation. See @NbdServerRemoveMode description.
# Default is 'safe'.
#
# Returns: error if
# - the server is not running
# - export is not found
# - mode is 'safe' and there are existing connections
#
# Since: 2.12
##
{ 'command': 'nbd-server-remove',
'data': {'name': 'str', '*mode': 'NbdServerRemoveMode'} }
##
# @nbd-server-stop:
#
# Stop QEMU's embedded NBD server, and unregister all devices previously
# added via @nbd-server-add.
#
# Since: 1.3.0
##
{ 'command': 'nbd-server-stop' }
##
# @BlockExportType:
#
# An enumeration of block export types
#
# @nbd: NBD export
#
# Since: 4.2
##
{ 'enum': 'BlockExportType',
'data': [ 'nbd' ] }
##
# @BlockExportOptions:
#
# Describes a block export, i.e. how single node should be exported on an
# external interface.
#
# @id: A unique identifier for the block export (across all export types)
#
# @node-name: The node name of the block node to be exported (since: 5.2)
#
# @writethrough: If true, caches are flushed after every write request to the
# export before completion is signalled. (since: 5.2;
# default: false)
#
# Since: 4.2
##
{ 'union': 'BlockExportOptions',
'base': { 'type': 'BlockExportType',
'id': 'str',
'node-name': 'str',
'*writethrough': 'bool' },
'discriminator': 'type',
'data': {
'nbd': 'BlockExportOptionsNbd'
} }
##
# @block-export-add:
#
# Creates a new block export.
#
# Since: 5.2
##
{ 'command': 'block-export-add',
'data': 'BlockExportOptions', 'boxed': true }
