Backup size bigger than data size

[NHL]

Hi

Netbackup newbie here ...

Netbackup 6.5 on RHEL 5.2.

Single host backing up 3 directories with compressed files in each.

Total data to backup:  535GB.

Backup started at 03:00, it's now 10:00 and it's still running, so far it's somehow managed to backup 726 GB.

Backup device is a Dell PV124T LTO-3 SCSI attached. 

The policy does not have compression enabled.

The directories it's backing up contain no links, just gzipped files.

It has been running fine for the last week, but the last 2 nights it has backed up more data than there was data available to backup.

Here is some info from the logs 

0,51216,116,116,95251,1226656811589,13668,4107905936,0:,77:windowcloses at 1226664000 (Fri Nov 14 12:00:00 2008)(JobScheduler.cpp:3442),29:JobScheduler::scheduleNextJob,1

0,51216,116,116,95252,1226656811589,13668,4107905936,0:,115:setting timer for 1226664000 (Fri Nov 14 12:00:00 2008,0xf4d99c10), jobscurrently active 1(JobScheduler.cpp:3485),29:JobScheduler::scheduleNextJob,1

0,51216,116,116,95253,1226656811589,13668,4107905936,0:,44:policy = WFSC_WEEKLY(JobScheduler.cpp:3488),29:JobScheduler::scheduleNextJob,1

0,51216,116,116,95254,1226656811589,13668,4107905936,0:,46:schedule = Weekly_Full(JobScheduler.cpp:3489),29:JobScheduler::scheduleNextJob,1

0,51216,137,116,419,1226631600028,13668,4116310928,0:,31:dberrorq.c:midnite= 1226620800,20:db_error_add_to_file,1

0,51216,137,116,420,1226631600036,13668,4116310928,0:,31:dberrorq.c:midnite= 1226620800,20:db_error_add_to_file,1

0,51216,137,116,421,1226631600037,13668,4116310928,0:,31:dberrorq.c:midnite= 1226620800,20:db_error_add_to_file,1

0,51216,137,116,422,1226631600037,13668,4116310928,0:,31:dberrorq.c:midnite= 1226620800,20:db_error_add_to_file,1

0,51216,137,116,423,1226648281811,13668,4107905936,0:,31:dberrorq.c:midnite= 1226620800,20:db_error_add_to_file,1 

Any help would be appreciated.

Thanks

Nick . 

Message Edited by NHL on 11-14-2008 02:04 AM

Message Edited by NHL on 11-14-2008 02:07 AM

[Supergoof]

I am experiencing a similar problem. I have a Windows 2003 Server as a client with v6.0 MP7 NetBackup Client installed. When backing up this server with only about 8 GB data on it, NetBackup reports a backup size of aproximately 241 GB. The size is the same wether it is a Daily backup or a full backup.

[Jim-m]

When you backup compressed data you usually expected it to grow by < 5% when backed up. Nothing like what is being reported here. Compressing compressed data causing it to grow. 

You get the increase when it hits hardware compression on the tape drive.

Message Edited by Jim-m on 11-16-2008 02:29 AM

[NHL]

The data is not getting compressed at the library level so that is not the problem.