NetBackup Images

[LiverpoolFan]

Can someone please let me know if it is possible to import the image of a failed backup?

Lets say, for instance, that a backup gets to 215GB and then fails, surely the data that it has backed up is possible to get at?

 

[Vela]

I could be wrong, but I believe this is what happens.

Netbackup writes a beginning header to the tape. This is (client backupx)

It then writes data to the tape. If the backup is successful, Netbackup will write a (EOF backupx complete) ending header to the tape. Next time the tape loads, Netbackup know's where to start writing to the tape.

If the backup fails I believe Netbackup will mark everything that has been written to tape to be overwritten.

 

[comtec17]

If the job fails, NetBackup does not have any record of the data on tape and the blocks on the media are marked for overwrite/deletion.

 

[Stumpr]

Careful reading of the logs show that Netbackup actually expires the image which then makes the tape available for the overwrites.

Bob Stump
Just because the VERITAS documentation states a certain thing does not make it a fact and that is truth.