Lustre: Installing and setting up a RobinHood server (RBH)

Enabling the HSM Coordinator for an Existing File System

The HSM Coordinator can be enabled at any time after a file system has been created, provided that the file system is based on Lustre 2.5.0 or newer, the Metadata service is online, and the MDT and MGT are mounted.

1. Log into Intel® Manager for Lustre dashboard as a superuser.
2. Navigate to the File Systems window: Click Configuration > File Systems.
3. Select the file system for which HSM support is to be enabled from the list of file systems.
4. Under Metadata Target, click the name of the metadata target.
5. Click the Advanced tab and look for the property hsm_control.
6. Enter the string enabled into the text field.
7. Click the Apply button. The background will briefly flash to grey then back to white to indicate that the setting has been applied. Click Close when done.

Verifying the Current Status of the Coordinator

The most reliable way to verify the status of the HSM Coordinator process is to log into the metadata server that currently has the MDT mounted. Then enter the following command:

 lctl get_param mdt.*.hsm_control

For example:

 [root@ieel-mds1 ~]# lctl get_param mdt.*.hsm_control mdt.demo-MDT0000.hsm_control=enabled