SL3000 - Host Partition Unable To Mount Tapes After Library Reboot

Asset ID:	1-72-2201359.1
Update Date:	2017-11-17
Keywords:

Solution Type Problem Resolution Sure

Solution 2201359.1 : SL3000 - Host Partition Unable To Mount Tapes After Library Reboot

Applies to:

Sun StorageTek SL8500 Modular Library System - Version All Versions and later
Information in this document applies to any platform.

Symptoms

Issue started after a library reboot.

Moves are getting completed on the library side and library is fully operational in SLC. However the backups are not getting completed and from EMC no tapes are being mounted

Customer environment:

SL3000 library partitioned. EMC Networker lost communication with the second partition - BRTOOLS :

Inventory/load operation didn't work as expected. For example, while trying to inventory one media, was failing with:

8896 09/19/2016 01:46:48 PM nsrd NSR notice [Jukebox 'BRTOOLS', operation 2025]. Initiated operation 'operation: "Inventory"; operation device: "rd=freppau-fsbrt01:nrst0a (NDMP)"; operation slots: " 11"; operation task: "verify during inventory"; '.

15214 09/19/2016 01:54:49 PM nsrlcpd#2 NSR info Jukebox:BRTOOLS access:scsidev@2.1.1 failed:MOVE MEDIUM key:5 status:CHECK CONDITION Illegal Request, Medium Not Present

0 09/19/2016 01:54:49 PM nsrmmgd NSR notice 09/19/16 13:54:49.599978 lcpd 2 at host nsrsap-ge0 reported error 'Jukebox:BRTOOLS access:scsidev@2.1.1 failed:MOVE MEDIUM key:5 status:CHECK CONDITION Illegal Request, Medium Not Present

7224 09/19/2016 01:54:49 PM nsrd NSR notice [Jukebox 'BRTOOLS', operation # 2025]. Jukebox:BRTOOLS access:scsidev@2.1.1 failed:MOVE MEDIUM key:5 status:CHECK CONDITION Illegal Request, Medium Not Present

Cause

Three host/adapter WWNames are mapped to the two partitions, overlapped commands also noticed.

<initiator>
21000024FF88DB22:

Solution

Suggested to check and confirm that persistent binding is working as you need to do have persistent device names for both robot LUNs.

Consider using a command similar to 'ls -laF /dev/changer' and then egrep for both st devices

e.g ls -laF /dev/tape/by-id | egrep.

Confirm that correct drive ordering is in use:

https://community.emc.com/docs/DOC-22450

Solution followed by customer. Reconfigured all the library partitions from EMC Networker end on backup server

References

<NOTE:1908632.1> - SL8500/SL3000 - Excessive 5614 "Proximity Sensor Reports an Empty Cell" Warnings in the Log Snapshot All Report
<NOTE:1376163.1> - SL8500 - How to Troubleshoot "Servo Mech Track Event" Errors
<NOTE:1933727.1> - SL500/SL3000/SL8500 – How to Collect Information Using SL Console

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