StorageGateway / Client / update_nfs_file_share



Updates a Network File System (NFS) file share. This operation is only supported in S3 File Gateways.


To leave a file share field unchanged, set the corresponding input field to null.

Updates the following file share settings:

  • Default storage class for your S3 bucket

  • Metadata defaults for your S3 bucket

  • Allowed NFS clients for your file share

  • Squash settings

  • Write status of your file share

See also: AWS API Documentation

Request Syntax

response = client.update_nfs_file_share(
        'FileMode': 'string',
        'DirectoryMode': 'string',
        'GroupId': 123,
        'OwnerId': 123
        'CacheStaleTimeoutInSeconds': 123
  • FileShareARN (string) –


    The Amazon Resource Name (ARN) of the file share to be updated.

  • KMSEncrypted (boolean) –

    Set to true to use Amazon S3 server-side encryption with your own KMS key, or false to use a key managed by Amazon S3. Optional.

    Valid Values: true | false

  • KMSKey (string) – The Amazon Resource Name (ARN) of a symmetric customer master key (CMK) used for Amazon S3 server-side encryption. Storage Gateway does not support asymmetric CMKs. This value can only be set when KMSEncrypted is true. Optional.

  • NFSFileShareDefaults (dict) –

    The default values for the file share. Optional.

    • FileMode (string) –

      The Unix file mode in the form “nnnn”. For example, 0666 represents the default file mode inside the file share. The default value is 0666.

    • DirectoryMode (string) –

      The Unix directory mode in the form “nnnn”. For example, 0666 represents the default access mode for all directories inside the file share. The default value is 0777.

    • GroupId (integer) –

      The default group ID for the file share (unless the files have another group ID specified). The default value is nfsnobody.

    • OwnerId (integer) –

      The default owner ID for files in the file share (unless the files have another owner ID specified). The default value is nfsnobody.

  • DefaultStorageClass (string) –

    The default storage class for objects put into an Amazon S3 bucket by the S3 File Gateway. The default value is S3_STANDARD. Optional.


  • ObjectACL (string) – A value that sets the access control list (ACL) permission for objects in the S3 bucket that a S3 File Gateway puts objects into. The default value is private.

  • ClientList (list) –

    The list of clients that are allowed to access the S3 File Gateway. The list must contain either valid IP addresses or valid CIDR blocks.

    • (string) –

  • Squash (string) –

    The user mapped to anonymous user.

    Valid values are the following:

    • RootSquash: Only root is mapped to anonymous user.

    • NoSquash: No one is mapped to anonymous user.

    • AllSquash: Everyone is mapped to anonymous user.

  • ReadOnly (boolean) –

    A value that sets the write status of a file share. Set this value to true to set the write status to read-only, otherwise set to false.

    Valid Values: true | false

  • GuessMIMETypeEnabled (boolean) –

    A value that enables guessing of the MIME type for uploaded objects based on file extensions. Set this value to true to enable MIME type guessing, otherwise set to false. The default value is true.

    Valid Values: true | false

  • RequesterPays (boolean) –

    A value that sets who pays the cost of the request and the cost associated with data download from the S3 bucket. If this value is set to true, the requester pays the costs; otherwise, the S3 bucket owner pays. However, the S3 bucket owner always pays the cost of storing data.


    RequesterPays is a configuration for the S3 bucket that backs the file share, so make sure that the configuration on the file share is the same as the S3 bucket configuration.

    Valid Values: true | false

  • FileShareName (string) –

    The name of the file share. Optional.


    FileShareName must be set if an S3 prefix name is set in LocationARN, or if an access point or access point alias is used.

  • CacheAttributes (dict) –

    Specifies refresh cache information for the file share.

    • CacheStaleTimeoutInSeconds (integer) –

      Refreshes a file share’s cache by using Time To Live (TTL). TTL is the length of time since the last refresh after which access to the directory would cause the file gateway to first refresh that directory’s contents from the Amazon S3 bucket or Amazon FSx file system. The TTL duration is in seconds.

      Valid Values:0, 300 to 2,592,000 seconds (5 minutes to 30 days)

  • NotificationPolicy (string) –

    The notification policy of the file share. SettlingTimeInSeconds controls the number of seconds to wait after the last point in time a client wrote to a file before generating an ObjectUploaded notification. Because clients can make many small writes to files, it’s best to set this parameter for as long as possible to avoid generating multiple notifications for the same file in a small time period.


    SettlingTimeInSeconds has no effect on the timing of the object uploading to Amazon S3, only the timing of the notification.

    The following example sets NotificationPolicy on with SettlingTimeInSeconds set to 60.

    {\"Upload\": {\"SettlingTimeInSeconds\": 60}}

    The following example sets NotificationPolicy off.


  • AuditDestinationARN (string) – The Amazon Resource Name (ARN) of the storage used for audit logs.

Return type:



Response Syntax

    'FileShareARN': 'string'

Response Structure

  • (dict) –


    • FileShareARN (string) –

      The Amazon Resource Name (ARN) of the updated file share.


  • StorageGateway.Client.exceptions.InvalidGatewayRequestException

  • StorageGateway.Client.exceptions.InternalServerError