> Yes, I am usually ejecting between 25 - 40 tapes. Is
> this a Netbackup 5.1 error or does this happen in 6.0
> too?
I'm not sure on 6.0 but basically the reply from Veritas is that the library does not response immediately after you have close the loadport and therefore when you hit enter "too quick" in response to the vmchange command, you would encounter such problem.
To verify try testing this:
1. Eject just a few tapes and wait a while before you hit enter in response to vmchange prompt. It should not give you any problem.
2. Eject large number of tapes and wait for about 1min before you hit enter. It should be ok or at least the error is less.
I've compared the new device_mappings.txt from Veritas against my existing, the different is the new one has added line "MAILSLOT_DELAY=30" under my tape library product type.
i.e.
VENDOR_ID=HP
PRODUCT_ID=ESL E-Series
ROBOT_TYPE=8
COMPATIBILITY_TAG=4194305
DRIVE_NEEDS_CLEANING_SENSE=8001,8002
LIBRARY_SERIALIZATION=3
MAILSLOT_DELAY=30