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b=PP4eZMiuIYQlaF0ReyTIKFbVbQtdj2EB+M5QWOLklgdRUJien1xBpPSRn0zhrBQrnuSgfxyvYqu612vr94DCeI/hKF+DMQV0UUOvhSwCbvZsyRB5Mowi2ZHmGDPE+TWdAjLRs8Xx+RnVZqOGoY5eNkU9aE/egCQnsjUaU801+fx9utR5PAiclvaUc4TAcm+bvcCEAKKGJoT4q4WTnEoTp+DOLsFxon/sIFdZoA89a46ZgXMFdfjqVdOwPDbFhMQXNql/r6awXsvGBEdvFkeC/BZOFeh4yaFbnTBhQthjY0R7T6tuWfnInoBimYMQ3n4XYIOdo9IO2PmKqehsoktzOg== From: Het Gala To: qemu-devel@nongnu.org Cc: prerna.saxena@nutanix.com, quintela@redhat.com, dgilbert@redhat.com, pbonzini@redhat.com, berrange@redhat.com, armbru@redhat.com, eblake@redhat.com, Het Gala , Aravind Retnakaran , Manish Mishra Subject: [PATCH] multifd: Updated QAPI format for 'migrate' qemu monitor command Date: Mon, 21 Nov 2022 11:04:27 +0000 Message-Id: <20221121110427.198431-1-het.gala@nutanix.com> X-Mailer: git-send-email 2.22.3 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: BYAPR11CA0095.namprd11.prod.outlook.com (2603:10b6:a03:f4::36) To BYAPR02MB4343.namprd02.prod.outlook.com (2603:10b6:a03:57::18) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BYAPR02MB4343:EE_|SJ0PR02MB7117:EE_ X-MS-Office365-Filtering-Correlation-Id: 4807ff6c-c544-43d1-f7f7-08dacbb02da4 x-proofpoint-crosstenant: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.155.12; envelope-from=het.gala@nutanix.com; helo=mx0b-002c1b01.pphosted.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @nutanix.com) X-ZM-MESSAGEID: 1669028712341100001 Content-Type: text/plain; charset="utf-8" To prevent double data encoding of uris, instead of passing transport mechanisms, host address and port all together in form of a single string and writing different parsing functions, we intend the user to explicitly mention most of the parameters through the medium of qmp command itself. The current patch is continuation of patchset series https://www.mail-archive.com/qemu-devel@nongnu.org/msg901274.html and reply to the ongoing discussion for better QAPI design here https://www.mail-archive.com/qemu-devel@nongnu.org/msg903753.html. Suggested-by: Daniel P. Berrange Suggested-by: Aravind Retnakaran Suggested-by: Manish Mishra Signed-off-by: Het Gala --- qapi/migration.json | 127 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 125 insertions(+), 2 deletions(-) diff --git a/qapi/migration.json b/qapi/migration.json index 88ecf86ac8..fd9286ea0f 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -1449,12 +1449,101 @@ ## { 'command': 'migrate-continue', 'data': {'state': 'MigrationStatus'} } =20 +## +# @MigrateTransport: +# +# The supported communication transport mechanisms for migration +# +# @socket: Supported communication type between two devices for migration. +# Socket is able to cover all of 'tcp', 'unix', 'vsock' and +# 'fd' already +# +# @exec: Supported communication type to redirect migration stream into fi= le. +# +# Since 7.1 +## +{ 'enum': 'MigrateTransport', + 'data': ['socket', 'exec'] } + +## +# @MigrateSocketAddrType: +# +# To support different type of socket. +# +# @socket-type: Different type of socket connections. +# +# Since (7.1) +## +{ 'struct': 'MigrateSocketAddrType', + 'data': {'socket-type': 'SocketAddress' } } + +## +# @MigrateAddress: +# +# The options available for communication transport mechanisms for migrati= on +# +# Since 7.1 +## +{ 'union' : 'MigrateAddress', + 'base' : { 'transport' : 'MigrateTransport'}, + 'discriminator' : 'transport', + 'data' : { + 'socket' : 'MigrateSocketAddrType', + 'exec' : 'String' } } + +## +# @MigrateChannelType: +# +# The supported options for migration channel type requests +# +# @control: Support request for main outbound migration control channel +# +# @data: Supported Channel type for multifd data channels +# +# @async: Supported Channel type for post-copy async requests +# +# Since 7.1 +## +{ 'enum': 'MigrateChannelType', + 'data': ['control', 'data', 'async'] } + +## +# @MigrateChannel: +# +# Information regarding migration Channel-type for transferring packets, +# source and corresponding destination interface for socket connection +# and number of multifd channels over the interface. +# +# @channeltype: Name of Channel type for transfering packet information +# +# @src-addr: SocketAddress of source interface +# +# @dest-addr: SocketAddress of destination interface +# +# @multifd-count: number of multifd channels used to migrate +# data between a specific source and destination +# interface. Default value in this case is 2. +# +# Since 7.1 +## +{ 'struct': 'MigrateChannel', + 'data' : { + 'channeltype' : 'MigrateChannelType', + '*src-addr' : 'MigrateAddress', + 'dest-addr' : 'MigrateAddress', + '*multifd-count' : 'int' } } + ## # @migrate: # # Migrates the current running guest to another Virtual Machine. # # @uri: the Uniform Resource Identifier of the destination VM +# for migration thread +# +# @channels: list of migration channel type, pair of source and +# destination interface with number of multifd-channels +# for each pair # # @blk: do block migration (full disk copy) # @@ -1479,15 +1568,49 @@ # 3. The user Monitor's "detach" argument is invalid in QMP and should not # be used # +# 4. The uri argument should have the Uniform Resource Identifier of defau= lt +# destination VM. This connection will be bound to default network +# +# 5. Both 'uri' and 'channels' arguments, are mututally exclusive. +# +# 6. The 'channels' argument should contain atleast one control channel for +# main outbound migration. +# # Example: # # -> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } } # <- { "return": {} } # +# -> { "execute": "migrate", +# "arguments": { +# "channels": [ { 'channeltype': 'control', +# 'dest-addr': {'transport': 'socket', +# 'type': 'inet', +# 'host': '10.12.34.9', 'port': '10= 50'}}, +# { 'channeltype': 'data', +# 'src-addr': {'transport': 'socket', +# 'type': 'inet', +# 'host': '10.12.34.9', +# 'port': '4000', 'ipv4': 'true'}, +# 'dest-addr': { 'transport': 'socket', +# 'type': 'inet', +# 'host': '10.12.34.92', +# 'port': '1234', 'ipv4': 'true'}, +# 'multifd-count': 5 }, +# { 'channeltype': 'data', +# 'src-addr': {'transport': 'socket', +# 'type': 'inet', +# 'host': '10.2.3.4', 'port': '1000= '}, +# 'dest-addr': {'transport': 'socket', +# 'type': 'inet', +# 'host': '0.0.0.4', 'port': '3000= '}, +# 'multifd-count': 3 } ] } } +# <- { "return": {} } +# ## { 'command': 'migrate', - 'data': {'uri': 'str', '*blk': 'bool', '*inc': 'bool', - '*detach': 'bool', '*resume': 'bool' } } + 'data': {'*uri': 'str', '*channels': ['MigrateChannel'], '*blk': 'bool', + '*inc': 'bool', '*detach': 'bool', '*resume': 'bool' } } =20 ## # @migrate-incoming: --=20 2.31.1