mirror of https://gitee.com/openkylin/qemu.git
120 lines
2.5 KiB
Python
120 lines
2.5 KiB
Python
# -*- Mode: Python -*-
|
|
# vim: filetype=python
|
|
#
|
|
|
|
##
|
|
# = Yank feature
|
|
##
|
|
|
|
##
|
|
# @YankInstanceType:
|
|
#
|
|
# An enumeration of yank instance types. See @YankInstance for more
|
|
# information.
|
|
#
|
|
# Since: 6.0
|
|
##
|
|
{ 'enum': 'YankInstanceType',
|
|
'data': [ 'block-node', 'chardev', 'migration' ] }
|
|
|
|
##
|
|
# @YankInstanceBlockNode:
|
|
#
|
|
# Specifies which block graph node to yank. See @YankInstance for more
|
|
# information.
|
|
#
|
|
# @node-name: the name of the block graph node
|
|
#
|
|
# Since: 6.0
|
|
##
|
|
{ 'struct': 'YankInstanceBlockNode',
|
|
'data': { 'node-name': 'str' } }
|
|
|
|
##
|
|
# @YankInstanceChardev:
|
|
#
|
|
# Specifies which character device to yank. See @YankInstance for more
|
|
# information.
|
|
#
|
|
# @id: the chardev's ID
|
|
#
|
|
# Since: 6.0
|
|
##
|
|
{ 'struct': 'YankInstanceChardev',
|
|
'data': { 'id': 'str' } }
|
|
|
|
##
|
|
# @YankInstance:
|
|
#
|
|
# A yank instance can be yanked with the @yank qmp command to recover from a
|
|
# hanging QEMU.
|
|
#
|
|
# Currently implemented yank instances:
|
|
# - nbd block device:
|
|
# Yanking it will shut down the connection to the nbd server without
|
|
# attempting to reconnect.
|
|
# - socket chardev:
|
|
# Yanking it will shut down the connected socket.
|
|
# - migration:
|
|
# Yanking it will shut down all migration connections. Unlike
|
|
# @migrate_cancel, it will not notify the migration process, so migration
|
|
# will go into @failed state, instead of @cancelled state. @yank should be
|
|
# used to recover from hangs.
|
|
#
|
|
# Since: 6.0
|
|
##
|
|
{ 'union': 'YankInstance',
|
|
'base': { 'type': 'YankInstanceType' },
|
|
'discriminator': 'type',
|
|
'data': {
|
|
'block-node': 'YankInstanceBlockNode',
|
|
'chardev': 'YankInstanceChardev' } }
|
|
|
|
##
|
|
# @yank:
|
|
#
|
|
# Try to recover from hanging QEMU by yanking the specified instances. See
|
|
# @YankInstance for more information.
|
|
#
|
|
# Takes a list of @YankInstance as argument.
|
|
#
|
|
# Returns: - Nothing on success
|
|
# - @DeviceNotFound error, if any of the YankInstances doesn't exist
|
|
#
|
|
# Example:
|
|
#
|
|
# -> { "execute": "yank",
|
|
# "arguments": {
|
|
# "instances": [
|
|
# { "type": "block-node",
|
|
# "node-name": "nbd0" }
|
|
# ] } }
|
|
# <- { "return": {} }
|
|
#
|
|
# Since: 6.0
|
|
##
|
|
{ 'command': 'yank',
|
|
'data': { 'instances': ['YankInstance'] },
|
|
'allow-oob': true }
|
|
|
|
##
|
|
# @query-yank:
|
|
#
|
|
# Query yank instances. See @YankInstance for more information.
|
|
#
|
|
# Returns: list of @YankInstance
|
|
#
|
|
# Example:
|
|
#
|
|
# -> { "execute": "query-yank" }
|
|
# <- { "return": [
|
|
# { "type": "block-node",
|
|
# "node-name": "nbd0" }
|
|
# ] }
|
|
#
|
|
# Since: 6.0
|
|
##
|
|
{ 'command': 'query-yank',
|
|
'returns': ['YankInstance'],
|
|
'allow-oob': true }
|