Help Center/ Scalable File Service/ API Reference/ SFS Turbo APIs/ Storage Interworking Management/ Adding a Storage Backend

Updated on 2025-07-22 GMT+08:00

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Adding a Storage Backend

Function

This API is used to add a storage backend for an SFS Turbo file system.

Constraints

This API is only supported for SFS Turbo 1,000 MB/s/TiB, 500 MB/s/TiB, 250 MB/s/TiB, 125 MB/s/TiB, 40 MB/s/TiB, and 20 MB/s/TiB file systems.
Request body parameter file_system_path must be the name of a directory that cannot be found in the file system root directory.
When adding OBS resources as storage backends, you can only add OBS buckets. OBS parallel file systems cannot be added.
Adding OBS storage backends depends on the OBS service, so you need to obtain the OBS Administrator permissions.
This API is only supported for NFS file systems.

URI

POST /v1/{project_id}/sfs-turbo/shares/{share_id}/targets

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	The project ID.
share_id	Yes	String	The file system ID.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	The account token.
Content-Type	Yes	String	The MIME type.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
file_system_path	Yes	String	The name of the interworking directory. SFS Turbo will create a subdirectory with this name in the file system root directory and associate this subdirectory with the storage backend. It must be a directory whose name cannot be found in the file system root directory. The restrictions are as follows: Only letters, digits, underscores (_), hyphens (-), and periods (.) are allowed. Its length cannot exceed 63 characters, and its name cannot be a period (.) or two periods (..). It cannot contain slashes (/), and cannot be the name of a multi-level directory.
obs	Yes	ObsDataRepository object	The OBS storage backend.

**Table 4** ObsDataRepository
Parameter	Mandatory	Type	Description
bucket	Yes	String	The OBS bucket name.
endpoint	Yes	String	The OBS bucket endpoint.
policy	No	ObsDataRepositoryPolicy object	The auto synchronization policy of the storage backend.
attributes	No	ObsTargetAttributes object	The attributes of the storage backend. This parameter is not supported for file systems that are created on or before June 30, 2024 and have not been upgraded. Submit a service ticket if you need it.

**Table 5** ObsDataRepositoryPolicy
Parameter	Mandatory	Type	Description
auto_export_policy	No	AutoExportPolicy object	The auto export policy of the storage backend. If enabled, all updates made on the file system will be automatically exported to the OBS bucket.

**Table 6** AutoExportPolicy
Parameter	Mandatory	Type	Description
events	No	Array of strings	The type of data automatically exported to the OBS bucket. NEW: Files created and then modified in the SFS Turbo interworking directory. Any data or metadata modifications made will be automatically synchronized to the OBS bucket. CHANGED: Files previously imported from the OBS bucket and then modified in the SFS Turbo interworking directory. Any data or metadata modifications made will be automatically synchronized to the OBS bucket. DELETED: Files deleted from the SFS Turbo interworking directory. Deletions will be automatically synchronized to the OBS bucket, and only such files that were previously exported to the bucket will be deleted. Enumeration values: NEW CHANGED DELETED
prefix	No	String	The prefix to be matched in the storage backend.
suffix	No	String	The suffix to be matched in the storage backend.

**Table 7** ObsTargetAttributes
Parameter	Mandatory	Type	Description
file_mode	No	Integer	The permissions on the imported file. Value range: 0 to 777 The first digit indicates the permissions of the file owner, and its value ranges from 0 to 7. The second digit indicates the permissions of the user group to which the file belongs, and its value ranges from 0 to 7. The third digit indicates the permissions of other users, and its value ranges from 0 to 7. The file owner is specified by UID, and the user group to which the file belongs is specified by GID. Users who are not the file owner and not in the user group to which the file belongs are other users. Values 4, 2, and 1 indicate the read, write, and execute permissions respectively. The total value between 1 and 7 represents the access permissions. For example, the first digit 7 in 750 indicates that the file owner has the read, write, and execute permissions on the file, the second digit 5 indicates that the user group to which the file belongs has the read and execute permissions on the file, and the third digit 0 indicates that other users have no permission on the file.
dir_mode	No	Integer	The permissions on the imported directory. Value range: 0 to 777 The first digit indicates the permissions of the directory owner, and its value ranges from 0 to 7. The second digit indicates the permissions of the user group to which the directory belongs, and its value ranges from 0 to 7. The third digit indicates the permissions of other users, and its value ranges from 0 to 7. The directory owner is specified by UID, and the user group to which the directory belongs is specified by GID. Users who are not the directory owner and not in the user group to which the directory belongs are other users. Values 4, 2, and 1 indicate the read, write, and execute permissions respectively. The total value between 1 and 7 represents the access permissions. For example, the first digit 7 in 750 indicates that the directory owner has the read, write, and execute permissions on the directory, the second digit 5 indicates that the user group to which the directory belongs has the read and execute permissions on the directory, and the third digit 0 indicates that other users have no permission on the directory.
uid	No	Integer	The ID of the user who owns the imported object. The default value is 0. The value ranges from 0 to 4294967294 (2^32-2).
gid	No	Integer	The ID of the user group to which the imported object belongs. The default value is 0. The value ranges from 0 to 4294967294 (2^32-2).

Response Parameters

Status code: 202

**Table 8** Response header parameters
Parameter	Type	Description
X-request-id	String	The request ID.

**Table 9** Response body parameters
Parameter	Type	Description
target_id	String	The storage backend ID.
creation_time	String	The time when the storage backend was added.
failure_details	FailureDetailsMessage object	The association error information.
file_system_path	String	The interworking directory name.
lifecycle	String	The association status. CREATING means that the storage backend is being created. You can call the API for querying details of a storage backend to query the status in polling mode. AVAILABLE means that the storage backend is added successfully. MISCONFIGURED means that the storage backend fails to be added. DELETING is currently not supported. Enumeration values: CREATING AVAILABLE MISCONFIGURED DELETING
obs	ObsDataRepository object	The OBS storage backend.

**Table 10** FailureDetailsMessage
Parameter	Type	Description
message	String	The error message.

**Table 11** ObsDataRepository
Parameter	Type	Description
bucket	String	The OBS bucket name.
endpoint	String	The OBS bucket endpoint.
policy	ObsDataRepositoryPolicy object	The auto synchronization policy of the storage backend.
attributes	ObsTargetAttributes object	The attributes of the storage backend. This parameter is not supported for file systems that are created on or before June 30, 2024 and have not been upgraded. Submit a service ticket if you need it.

**Table 12** ObsDataRepositoryPolicy
Parameter	Type	Description
auto_export_policy	AutoExportPolicy object	The auto export policy of the storage backend. If enabled, all updates made on the file system will be automatically exported to the OBS bucket.

**Table 13** AutoExportPolicy
Parameter	Type	Description
events	Array of strings	The type of data automatically exported to the OBS bucket. NEW: Files created and then modified in the SFS Turbo interworking directory. Any data or metadata modifications made will be automatically synchronized to the OBS bucket. CHANGED: Files previously imported from the OBS bucket and then modified in the SFS Turbo interworking directory. Any data or metadata modifications made will be automatically synchronized to the OBS bucket. DELETED: Files deleted from the SFS Turbo interworking directory. Deletions will be automatically synchronized to the OBS bucket, and only such files that were previously exported to the bucket will be deleted. Enumeration values: NEW CHANGED DELETED
prefix	String	The prefix to be matched in the storage backend.
suffix	String	The suffix to be matched in the storage backend.

**Table 14** ObsTargetAttributes
Parameter	Type	Description
file_mode	Integer	The permissions on the imported file. Value range: 0 to 777 The first digit indicates the permissions of the file owner, and its value ranges from 0 to 7. The second digit indicates the permissions of the user group to which the file belongs, and its value ranges from 0 to 7. The third digit indicates the permissions of other users, and its value ranges from 0 to 7. The file owner is specified by UID, and the user group to which the file belongs is specified by GID. Users who are not the file owner and not in the user group to which the file belongs are other users. Values 4, 2, and 1 indicate the read, write, and execute permissions respectively. The total value between 1 and 7 represents the access permissions. For example, the first digit 7 in 750 indicates that the file owner has the read, write, and execute permissions on the file, the second digit 5 indicates that the user group to which the file belongs has the read and execute permissions on the file, and the third digit 0 indicates that other users have no permission on the file.
dir_mode	Integer	The permissions on the imported directory. Value range: 0 to 777 The first digit indicates the permissions of the directory owner, and its value ranges from 0 to 7. The second digit indicates the permissions of the user group to which the directory belongs, and its value ranges from 0 to 7. The third digit indicates the permissions of other users, and its value ranges from 0 to 7. The directory owner is specified by UID, and the user group to which the directory belongs is specified by GID. Users who are not the directory owner and not in the user group to which the directory belongs are other users. Values 4, 2, and 1 indicate the read, write, and execute permissions respectively. The total value between 1 and 7 represents the access permissions. For example, the first digit 7 in 750 indicates that the directory owner has the read, write, and execute permissions on the directory, the second digit 5 indicates that the user group to which the directory belongs has the read and execute permissions on the directory, and the third digit 0 indicates that other users have no permission on the directory.
uid	Integer	The ID of the user who owns the imported object. The default value is 0. The value ranges from 0 to 4294967294 (2^32-2).
gid	Integer	The ID of the user group to which the imported object belongs. The default value is 0. The value ranges from 0 to 4294967294 (2^32-2).

Status code: 400

**Table 15** Response body parameters
Parameter	Type	Description
errCode	String	The error code.
errMsg	String	The error message.

Status code: 500

**Table 16** Response body parameters
Parameter	Type	Description
errCode	String	The error code.
errMsg	String	The error message.

Example Requests

This example adds a storage backend for the file system whose ID is 630509b1-ded4-476e-8d06-dbbc3dc23900. The OBS bucket name is myBucket, the OBS bucket endpoint is obs.region.example.com, and the name of the interworking directory is sfsturboDirName.
```
POST HTTPS://{endpoint}/v1/{project_id}/sfs-turbo/shares/630509b1-ded4-476e-8d06-dbbc3dc23900/targets

{
  "file_system_path" : "sfsturboDirName",
  "obs" : {
    "bucket" : "myBucket",
    "endpoint" : "obs.region.example.com"
  }
}
```
This example adds a storage backend for the file system whose ID is 630509b1-ded4-476e-8d06-dbbc3dc23900. The OBS bucket name is myBucket, the OBS bucket endpoint is obs.region.example.com, and the name of the interworking directory is sfsturboDirName. The permissions of imported files are set to 750, and the permissions of imported directories are set to 640.
```
POST HTTPS://{endpoint}/v1/{project_id}/sfs-turbo/shares/630509b1-ded4-476e-8d06-dbbc3dc23900/targets

{
  "file_system_path" : "sfsturboDirName",
  "obs" : {
    "bucket" : "myBucket",
    "endpoint" : "obs.region.example.com",
    "attributes" : {
      "file_mode" : 750,
      "dir_mode" : 640
    }
  }
}
```
This example adds a storage backend for the file system whose ID is 630509b1-ded4-476e-8d06-dbbc3dc23900. The OBS bucket name is myBucket, the OBS bucket endpoint is obs.region.example.com, and the name of the interworking directory is sfsturboDirName. The permissions of imported files are set to 750, the permissions of imported directories are set to 640, and both the UIDs and GIDs of the imported files and directories are set to 0.
```
POST HTTPS://{endpoint}/v1/{project_id}/sfs-turbo/shares/630509b1-ded4-476e-8d06-dbbc3dc23900/targets

{
  "file_system_path" : "sfsturboDirName",
  "obs" : {
    "bucket" : "myBucket",
    "endpoint" : "obs.region.example.com",
    "attributes" : {
      "file_mode" : 750,
      "dir_mode" : 640,
      "uid" : 0,
      "gid" : 0
    }
  }
}
```

This example adds a storage backend for the file system whose ID is 630509b1-ded4-476e-8d06-dbbc3dc23900. The OBS bucket name is myBucket, the OBS bucket endpoint is obs.region.example.com, and the name of the interworking directory is sfsturboDirName. The data types of the auto export policy are set to NEW, CHANGED, and DELETED.

POST HTTPS://{endpoint}/v1/{project_id}/sfs-turbo/shares/630509b1-ded4-476e-8d06-dbbc3dc23900/targets

{
  "file_system_path" : "sfsturboDirName",
  "obs" : {
    "bucket" : "myBucket",
    "endpoint" : "obs.region.example.com",
    "policy" : {
      "auto_export_policy" : {
        "events" : [ "NEW", "CHANGED", "DELETED" ]
      }
    }
  }
}

Example Responses

Status code: 202

Task delivered

{
  "target_id" : "00000334-xxxx-402d-a5d4-bxxxxx87b939",
  "creation_time" : "2023-11-19T04:02:03",
  "file_system_path" : "sfsturboDirName",
  "lifecycle" : "CREATING",
  "obs" : {
    "bucket" : "myBucket",
    "endpoint" : "obs.region.example.com"
  }
}

Status code: 400

Error response

{
  "errCode" : "SFS.TURBO.0001",
  "errMsg" : "request path/body parameters invalid"
}

Status code: 500

Error response

{
  "errCode" : "SFS.TURBO.0005",
  "errMsg" : "internal server error"
}

Status Codes

Status Code	Description
202	Task delivered
400	Error response
500	Error response

Error Codes

See Error Codes.

Parent topic: Storage Interworking Management

Previous topic: Storage Interworking Management

Next topic: Listing Storage Backends

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