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Configuring the host to run failover

The SUSE Linux Enterprise Server host requires configuration changes to run failover. The failover solution uses DM-MP.

  • You have installed the required packages on your system.
  • For Red Hat (RHEL) hosts, verify the packages are installed by running rpm -q device-mapper-multipath
  • For SLES hosts, verify the packages are installed by running rpm -q multipath-tools
By default, DM-MP is disabled in RHEL and SLES. Complete the following steps to enable DM-MP components on the host.
  1. Add the NVMe DE Series device entry to the devices section of the /etc/multipath.conf file, as shown in the following example:
    devices {
            device {
                    vendor "NVME"
                    product "NetApp E-Series"
                    path_grouping_policy group_by_prio
                    failback immediate
                    no_path_retry 30
            }
    }
  2. Configure multipathd to start at system boot.
    # systemctl enable multipathd
  3. Start multipathd if it is not currently running.
    # systemctl start multipathd
  4. Verify the status of multipathd to make sure it is active and running:
    # systemctl status multipathd