Dell NetWorker 19.9 Administration Guide

Detecting device ordering issues

To determine if there is a problem with device ordering in your environment, you first determine if the device order that appears in nsrjb output matches the device order from the inquire and sjisn commands, then verify that the device configuration within your NetWorker configuration conforms to this.

1. Execute the inquire command with the -cl option to determine the device path, scsi address, and serial number of the device.
2. Execute the sjisn command to determine the current order of the devices:

   sjisn scsidev@bus.target.lun


   where bus.target.lun is the SCSI address of the robotic arm returned by the inquire command in step 1, for example, 1.2.0.

3. Match the serial numbers of the devices in the sjisn output to the device names that correspond to these serial numbers in the inquire -cl output. This will give you the current device order by device filename.
4. Execute the nsrjb command to determine the order of devices as configured in NetWorker. Drive entries towards the end of the nsrjb output list the device order as configured in NetWorker.
5. Compare the device ordering as determined in step 3 and step 4. If the device ordering in these two steps do not match, the device ordering has changed and the library will need to be reconfigured.