Using Device Mapper Multipath with DxEnterprise on Linux

Applies to…

  • DxEnterprise v20.0.232.0 or later for Linux

Summary

Steps to install DM-Multipath on Linux.

Information

This article describes how to install Device Mapper Multipath on Linux to allow DxEnterprise to manage disks being presented down multiple paths. Having multiple paths defined for a disk adds redundancy and path failover in the case of a path, switch or adaptor failure. The below steps assume that the storage devices and paths have already been successfully presented to the systems.

  1. Install the multipath package:
    • Ubuntu:
      sudo apt-get install multipath-tools
    • RedHat/CentOS:
      sudo yum install device-mapper-multipath
  2. Create the /etc/multipath.conf file:
    sudo /sbin/mpathconf --enable
  3. Start the multipathd service:
    sudo systemctl start multipathd
  4. Run the multipath command to build the device list:
    sudo multipath
  5. If DxEnterprise is not yet installed, then install DxEnterprise at this time. For more information, see the DH2i installation guides.