6.7. Creating Distributed Striped Volumes

Important

Distributed-Striped volume is a technology preview feature. Technology Preview features are not fully supported under Red Hat subscription level agreements (SLAs), may not be functionally complete, and are not intended for production use. However, these features provide early access to upcoming product innovations, enabling customers to test functionality and provide feedback during the development process.
This type of volume stripes files across two or more nodes in the trusted storage pool. Use distributed striped volumes when the requirement is to scale storage, and in high concurrency environments where accessing very large files is critical.

Note

The number of bricks must be a multiple of the stripe count for a distributed striped volume.
Illustration of a Distributed Striped Volume

Figure 6.7. Illustration of a Distributed Striped Volume

Create a Distributed Striped Volume

Use gluster volume create to create a distributed striped volume, and gluster volume info to verify successful volume creation.

Pre-requisites

  1. Run the gluster volume create command to create the distributed striped volume.
    The syntax is # gluster volume create NEW-VOLNAME [stripe COUNT] [transport tcp | rdma | tcp,rdma] NEW-BRICK...
    The default value for transport is tcp. Other options can be passed such as auth.allow or auth.reject. See Section 8.1, “Configuring Volume Options” for a full list of parameters.

    Example 6.9. Distributed Striped Volume Across Two Storage Servers

    # gluster volume create test-volume stripe 2 transport tcp server1:/exp1/brick server1:/exp2/brick server2:/exp3/brick server2:/exp4/brick
Creation of test-volume has been successful
Please start the volume to access data.
  2. Run # gluster volume start VOLNAME to start the volume. 
    # gluster volume start test-volume
Starting test-volume has been successful
  3. Run gluster volume info command to optionally display the volume information.