2.2 KiB
HDFS native driver
The HDFS native driver is a plug-in for the Shared File Systems service. It uses Hadoop distributed file system (HDFS), a distributed file system designed to hold very large amounts of data, and provide high-throughput access to the data.
A Shared File Systems service share in this driver is a subdirectory
in the hdfs root directory. Instances talk directly to the HDFS storage
back end using the hdfs
protocol. Access to each share is
allowed by user based access type, which is aligned with HDFS ACLs to
support access control of multiple users and groups.
Network configuration
The storage back end and Shared File Systems service hosts should be in a flat network, otherwise L3 connectivity between them should exist.
Supported shared filesystems and operations
The driver supports HDFS shares.
The following operations are supported:
Create a share.
Delete a share.
Allow share access.
Note the following limitations:
- Only user access type is supported.
Deny share access.
Create a snapshot.
Delete a snapshot.
Create a share from a snapshot.
Requirements
- Install HDFS package, version >= 2.4.x, on the storage back end.
- To enable access control, the HDFS file system must have ACLs enabled.
- Establish network connection between the Shared File Systems service host and storage back end.
Shared File Systems service driver configuration
To enable the driver, set the share_driver
option in
file manila.conf
and add other options as appropriate.
share_driver = manila.share.drivers.hdfs.hdfs_native.HDFSNativeShareDriver
Known restrictions
- This driver does not support network segmented multi-tenancy model. Instead multi-tenancy is supported by the tenant specific user authentication.
- Only support for single HDFS namenode in Kilo release.
Driver options
The following table contains the configuration options specific to the share driver.