06-17-2015 03:47 AM
Hi,
Made SLP configuration with backup local NDMP to VTL then duplicate it to Tape Library. While the VTL it directly attached to the filer but the Tape Library is attached to media server. The backup was working but the duplication has failed.
I find in the detail status error :
Amount of data read (158711466) does not match the remaining fragment kbytes (838811648) for backup id pepkpcorpstr04_1434335767, copy 1, fragment 1
EXITING with status 85 <----------
the same with i found in the log files.
Solved! Go to Solution.
06-17-2015 04:18 AM
Plus - even if you did co-present the VTL - so that the VTL robot control was with NetBackup, and some VTL drives presented to the media server, and some VTL drives presented to the NDMP filer - then you need to remember that the filer will write its own proprietary NDMP data stream to the virtual tape media - and so... when NetBackup comes to read the virtual tape media - it finds that the virtual tape media is not in NetBackup format/layout/structure - and so it will be unable to read the virtual tape media.
If you want to be able to duplicate NDMP stream data from from VTL to physical tape, then NetBackup needs to be the middle man and receive the NDMP stream in the first place, and so it is NetBackup which writes the NDMP stream to VTL, and then later rereads the VTL when duplicating to physical tape.
This should help you understand:
https://www-secure.symantec.com/connect/articles/netbackup-76-blueprints-ndmp
06-17-2015 04:07 AM
Correct - this seems to be the issue:
08:37:55.452 [5912.772] <32> read_backup: Amount of data read (158711466) does not match the remaining fragment kbytes (838811648) for backup id pepkpcorpstr04_1434335767, copy 1, fragment 1
Try to run a Verify on media id AAA001.
06-17-2015 04:12 AM
If the VTL is not presented to the Media Server, then how can it duplicate? i.e. if the VTL is private to the NDMP filer, then the Media Server cannot see the (virtual) tape media in order to read them.
06-17-2015 04:18 AM
Plus - even if you did co-present the VTL - so that the VTL robot control was with NetBackup, and some VTL drives presented to the media server, and some VTL drives presented to the NDMP filer - then you need to remember that the filer will write its own proprietary NDMP data stream to the virtual tape media - and so... when NetBackup comes to read the virtual tape media - it finds that the virtual tape media is not in NetBackup format/layout/structure - and so it will be unable to read the virtual tape media.
If you want to be able to duplicate NDMP stream data from from VTL to physical tape, then NetBackup needs to be the middle man and receive the NDMP stream in the first place, and so it is NetBackup which writes the NDMP stream to VTL, and then later rereads the VTL when duplicating to physical tape.
This should help you understand:
https://www-secure.symantec.com/connect/articles/netbackup-76-blueprints-ndmp
06-17-2015 09:25 PM
I already use NBU as middle man and doing Local NDMP backup via Netbackup. What do you mean with middle man? remote NDMP backup?
Edited
06-17-2015 09:35 PM
06-17-2015 11:56 PM
Why not present the physical tape to the filer? we are testing backup to VTL, existing backup is backup to tape library
Where was the VTL tape mounted when the duplication started? On the filer?
Then it should have been fine.
Have you tried to run a Verify on the tape/image that produced the error? Still on progress
06-18-2015 09:17 PM
Hi Marianne,
The result of media verify is the same error with duplication process.
06-18-2015 09:38 PM
06-18-2015 09:39 PM