StorageTek SL500 Issues with the the drives

Question

Hello Everyone,&nbsp;We have in the environment tape library SL500.We recently starting to face the error below whenever we try to load some media tapes and starting backup operations:Mar&nbsp;12,&nbsp;2019&nbsp;4:11:29&nbsp;PM&nbsp;-&nbsp;granted&nbsp;resource&nbsp;&nbsp;HP.ULTRIUM5-SCSI.004Mar&nbsp;12,&nbsp;2019&nbsp;4:11:29&nbsp;PM&nbsp;-&nbsp;granted&nbsp;resource&nbsp;&nbsp;XXXXX-hcart2-robot-tld-0Mar&nbsp;12,&nbsp;2019&nbsp;4:11:29&nbsp;PM&nbsp;-&nbsp;end&nbsp;writingMar&nbsp;12,&nbsp;2019&nbsp;4:11:29&nbsp;PM&nbsp;-&nbsp;mounting&nbsp;BAR245Mar&nbsp;12,&nbsp;2019&nbsp;4:11:35&nbsp;PM&nbsp;-&nbsp;current&nbsp;media&nbsp;BAR245&nbsp;complete,&nbsp;requesting&nbsp;next&nbsp;media&nbsp;AnyMar&nbsp;12,&nbsp;2019&nbsp;4:12:19&nbsp;PM&nbsp;-&nbsp;current&nbsp;media&nbsp;--&nbsp;complete,&nbsp;awaiting&nbsp;next&nbsp;media&nbsp;Any.&nbsp;Waiting&nbsp;for&nbsp;resources.&nbsp;Mar&nbsp;12,&nbsp;2019&nbsp;4:12:24&nbsp;PM&nbsp;-&nbsp;Info&nbsp;bptm&nbsp;(pid=20049)&nbsp;Waiting&nbsp;for&nbsp;mount&nbsp;of&nbsp;media&nbsp;id&nbsp;BAR245&nbsp;(copy&nbsp;1)&nbsp;on&nbsp;server&nbsp;XXXXX.Mar&nbsp;12,&nbsp;2019&nbsp;4:12:30&nbsp;PM&nbsp;-&nbsp;Error&nbsp;bptm&nbsp;(pid=20049)&nbsp;error&nbsp;requesting&nbsp;media,&nbsp;TpErrno&nbsp;=&nbsp;Robot&nbsp;operation&nbsp;failedMar&nbsp;12,&nbsp;2019&nbsp;4:12:30&nbsp;PM&nbsp;-&nbsp;Warning&nbsp;bptm&nbsp;(pid=20049)&nbsp;media&nbsp;id&nbsp;BAR245&nbsp;load&nbsp;operation&nbsp;reported&nbsp;an&nbsp;error&nbsp;We contoacted Oracle support and they advised, after sharing a lot of logs, to replace the robot hand.We did it but the problem persists, then we jumped to the media tapes, removed all the old tapes and inserted new ones, and still on the same point and getting the same error.We tried to replace some drives, but no success noting that the drives are giving tape error whenever we load/unload media tapes.The Tape Drives by itlsef is HP LTO5 FC, and from the dump drive, it is showing that it is functioning well without error.But whenever we try to run a backup, the drive from the host goes down and give the error.&nbsp;Anyone faced this problem before?

nicolai · Answer

Look for the SCSI sense keys reported by the robot. Sense key are usually written&nbsp;to the syslog for event log.
A sense consist of a key, additional Sense Codes and Qualifiers (Sense Key ASC ASCQ)
Sense&nbsp;5h 3Ah 00h&nbsp; Medium Not Present, Drive Not Unloaded
The L500 interface manual at&nbsp;https://docs.oracle.com/cd/E19724-01/96122G/96122G.pdf
page 212 list all the possible values along with root cause. Once you know what is causing the mount issues, it is much easier to fix it.

mouse · Answer

Test your library with robtest:
Check these guides:
https://www.veritas.com/support/en_US/article.100016165.html
http://qsupport.quantum.com/callisto/node/2600
If you are unable to mount/unmount tape media through robtest, you won't be use the library in NBU.&nbsp;

marianne · Answer

lteife&nbsp;
There are quite a number of TechNotes and forum posts related to '&nbsp;TpErrno = Robot operation failed' errors.
Very little of them were caused by faulty robot or faulty media.
https://www.veritas.com/support/en_US/article.100018475.htmlHere incorrect zoning was part of the problem.
https://vox.veritas.com/t5/NetBackup/error-requesting-media-TpErrno-Robot-operation-failed-on-all-new/td-p/322652Incorrect labels caused this problem
https://www.veritas.com/support/en_US/article.100026246Caused by Linux device drivers
https://vox.veritas.com/t5/NetBackup/Error-bptm-pid-5832-error-requesting-media-TpErrno-Robot/td-p/583407A post that lists various possible reasons was marked as solution, but the OP never told us what the real problem was.
Best TN ever:&nbsp;Troubleshooting Robot or Drive Issues in NetBackuphttps://www.veritas.com/content/support/en_US/article.100014480.html#Robot_load_issueA number of possible reasons and troubleshooting steps are listed here.
Please add VERBOSE entry in volmgr/vm.conf on robot control host as well as all media servers, and restart ltid. This will increase media manager logging to OS syslog (e.g. /var/adm/messages on Solaris).
Ensure that bptm log exists on all media servers with bptm logging level set to 3 (only enable level 5 if you intend logging Support call with Veritas). No restart is needed.
Check above logs after next failure.&nbsp;

mike_gavrilov · Answer

Please share "print log error" output from the tape library.

mph999 · Answer

http://t10.org/lists/asc-num.htm

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StorageTek SL500 Issues with the the drives

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