Setting the Veritas restore daemon and LUN retry editable values

To access LUNs by using VxDMP, you should configure the restore daemon and then verify the configuration. If you have Veritas Storage Foundation 5.1, you should also set the VxDMP tunable dmp_lun_retry_timeout command.

1. Set the value for the VxDMP restore daemon to an interval of 60: vxdmptune dmp_restore_interval=60

   On reboot, this value takes effect and remains persistent. Alternatively, you can use the following commands to configure the daemon value:

   vxdmpadm stop restorevxdmpadm start restore interval=60

   This value takes effect immediately; however, it is not persistent on reboot. You must reset the value each time you reboot the system.

2. Verify that the daemon value has been successfully configured: vxdmpadm stat restored

   For details about configuring Veritas Volume Manager, see the Veritas Volume Manager Administrator's Guide for Linux that is shipped along with the software.

3. Set the value of the dmp_lun_retry_timeout to the appropriate interval:
   • If you are using Veritas Storage Foundation 5.1 up to 6.0), set the value to 300: vxdmpadm settune dmp_lun_retry_timeout=300

     The editable value changes immediately.

   • If you are using Veritas Storage Foundation 6 series and InfoScale 7 series, set the value to 60

     The editable value changes immediately.

4. For Veritas Storage Foundation 5.1 SP1 and later, and InfoScale 7.0 series, set the value of the dmp_path_age to an interval of 120: vxdmpadm settune dmp_path_age=120
   The editable value changes immediately.
5. Verify that the value has been successfully configured: vxdmpadm gettune
   This command displays the current values for all the Veritas DMP editables.