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Cloud Parallel File Storage:ModifyProtocolMountTarget

Last Updated:Jan 26, 2026

Modifies the export directory parameters of a protocol service. Only the description can be modified. The virtual private cloud (VPC) ID and vSwitch ID cannot be changed. To change these IDs, you must delete the export directory and create a new one.

Operation description

This operation is available only to Cloud Parallel File Storage (CPFS) file systems.

Debugging

You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • For mandatory resource types, indicate with a prefix of * .
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
nas:ModifyProtocolMountTargetupdate
*FileSystem
acs:nas:{#regionId}:{#accountId}:filesystem/{#FileSystemId}
    none
none

Request parameters

ParameterTypeRequiredDescriptionExample
ProtocolServiceIdstringYes

The ID of the protocol service.

ptc-197ed6a00f2b****
ExportIdstringYes

The ID of the export directory for the protocol service.

exp-19abf5beab8d****
FileSystemIdstringYes

The ID of the file system.

cpfs-099394bd928c****
DescriptionstringNo

The description of the export directory for the protocol service.

Limits:

  • The description must be 2 to 128 characters in length.
  • The description must start with a letter but cannot start with http:// or https://.
  • The description can contain letters, digits, colons (:), underscores (_), and hyphens (-).
test
DryRunbooleanNo

Specifies whether to perform only a dry run, without performing the actual request. The dry run checks parameter validity and prerequisites. The dry run does not modify the specified export directory or incur fees.

Valid values:

  • true: performs only a dry run. The system checks the required parameters, request syntax, and service limits. If the request fails the dry run, an error message is returned. If the request passes the dry run, the HTTP status code 200 is returned.
  • false (default): performs a dry run and sends the request.
true
ClientTokenstringNo

The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but you must make sure that the token is unique among different requests.

The token can contain only ASCII characters and cannot exceed 64 characters in length. For more information, see How do I ensure the idempotence?

Note If you do not specify this parameter, the system automatically uses the request ID as the client token. The request ID may be different for each request.
473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

Response parameters

ParameterTypeDescriptionExample
object

Schema of Response

RequestIdstring

The request ID.

473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

Examples

Sample success responses

JSONformat

{
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E"
}

Error codes

HTTP status codeError codeError messageDescription
400MissingFileSystemIdFileSystemId is mandatory for this action.-
400MissingExportIdExportId is mandatory for this action.-
400MissingAccessGroupNameAccessGroupName is mandatory for this action.-
400MissingProtocolServiceIdProtocolServiceId is mandatory for this action.-
403Instance.IncorrectStatusThe specified instance is in an incorrect status.-
403OperationDenied.InvalidMntStatusThe operation is denied due to invalid protocol mount targte status.-
403OperationDenied.InvalidPtcStatusThe operation is denied due to invalid protocol service status.-
403OperationDenied.InvalidStateThe operation is denied due to invalid file system state.-
403OperationDenied.NotSupportedThe operation is denied due to not supported.-
404InvalidFileSystem.NotFoundThe specified file system does not exist.The specified file system does not exist.
404InvalidProtocolService.NotFoundThe specified protocol service does not exist.-
404InvalidExportId.NotFoundThe specified ExportId does not exist.-
404InvalidAccessGroupName.NotFoundThe specified access group does not exist.-
404InvalidAccessGroupName.NotAccessRuleThere has no rule in access group.-
404InvalidDescription.InvalidFormatDescription format is invalid.-

For a list of error codes, visit the Service error codes.

Change history

Change timeSummary of changesOperation
2024-09-05The Error code has changedView Change Details