Last night I powered on my DEC tape library. I had forgotten to power it on earlier in the week after a maintenance session. Backups to tape were queueing up. Bits needed to be moved. Queues needed to be emptied.
I powered on. I ran camcontrol rescan followed by camcontrol devlist. The tape library was not showing up. Did I manage to kill it? Did I unseat the SCSI card? After removing the system from the rack, reseating the card, trying another card, and trying another tape library, I still had no tapes.
[root@kraken ~]# camcontrol rescan 12 Re-scan of bus 12 was successful [root@kraken ~]# camcontrol devlist | grep DEC [root@kraken ~]#
What was left?
I tried a new cable:
[root@kraken ~]# camcontrol rescan 12 Re-scan of bus 12 was successful [root@kraken ~]# camcontrol devlist | grep DEC <DEC TL800 (C) DEC 0326> at scbus12 target 0 lun 0 (ch0,pass12) <DEC TZ89 (C) DEC 2561> at scbus12 target 5 lun 0 (pass11,sa0) [root@kraken ~]#