if you can see your changer and drives using robtest then the below should work. Since you are on Linux instead of Solaris you will need to substitute your linux commands for the devfsadm command. Either that or do a reboot -r or whatever works on linux.
Creating sg.conf and getting netbackup to see tapes and changer modinfo | grep tape modunload -i # rm /dev/rmt/* cd /usr/openv/volmgr/bin/driver cp st.conf st.conf.old cp sg.links sg.links.old cp sg.conf sg.conf.old rm -f /kernel/drv/sg.conf /usr/openv/volmgr/bin/sg.build all -mt 15 -ml 15 ##comment out old entries/ or delete old entries in st.conf in /kernel/drv/st.co nf , such as ##name="st" class="scsi" target=0 lun=0; cat /usr/openv/volmgr/bin/driver/st.conf >> /kernel/drv/st.conf /usr/openv/volmgr/bin/driver/sg.install devfsadm -C -c tapes scan