Forum Discussion

Guduru's avatar
Guduru
Level 4
11 years ago

Tape drive paths not visible

Hi ,   I have netbackup master running with 6.5.4 version which on Linux 6.2 Opetrating system. I'm trying to configure the NetApp VTL tape drives to this master.   I can see the robotic path...
Backup and Recovery
Linux
NetBackup
Troubleshooting
  • Marianne's avatar
    Marianne
    11 years ago

    Please show us output of :

    ls -l /dev/nst*

    Have you checked all compatibility guides?
    Hardware and OS?

    According to NBU 6.x compatibility guide, RHEL 6.x was only supported as from NBU 6.5.6.

    And all NBU 6.x versions reached EOSL more than a year ago....

    Master Compatibility List: http://www.symantec.com/docs/TECH59978

Marianne's avatar
Marianne
Level 6
11 years ago

NBU needs the OS to see /dev/rmt device names.

You need to verify that sg as well as st device drivers are installed.

See Device Config Guide:  

Verifying the Linux drivers
To use SCSI tape drives and robotic libraries, the following drivers must be configured in the kernel or loaded as modules:
■ Linux SCSI generic (sg) driver. This driver allows pass-through commands to SCSI tape drives and control of robotic devices.
■ SCSI tape (st) driver. This driver allows the use of SCSI tape drives.
■ Standard SCSI driver.
■ SCSI-adaptor driver.
 
Verify that the drivers are installed and loaded in the kernel. You can use the
/sbin/lsmod command to verify that the st and the sg drivers are loaded in the
kernel. Example output is as follows:
Module Size Used by
sg 14844 0
st 24556 0
 
The standard Enterprise Linux releases have the sg and the st modules available for loading. The modules are loaded as needed. Also, you can load these modules if they are not in the kernel. Use the following commands:
/sbin/modprobe st
/sbin/modprobe sg