Forum Discussion

yogahariman's avatar
8 years ago

Cartridge LTO 4 always frozen when using LTO 5 robot

Hi Guys,

i have a problem that i can't solved. i have 2 type robot machine, LTO 4 and LTO 5, but last month, my LTO 4 was failure and cannot be used anymore. so the company decided to use only LTO5 robot for any backup to tape. i have read that LTO 4 can be used for read and write in LTO5 machine, so i try to do backup my file to tape LTO4 using LTO5 robotic.

But, when i try to do backup, the job was failed because something that i don't understand, and when i see in my NetBackup 6.5, in media menu, all of my media that used to backup job is frozen. I have no idea to solve it, would you please to help me guys?

Thanks before.

03 Feb 17 14:56:49 - requesting resource netbkp-hcart-robot-tld-1
03 Feb 17 14:56:49 - requesting resource netbkp.NBU_CLIENT.MAXJOBS.em-int
03 Feb 17 14:56:49 - requesting resource netbkp.NBU_POLICY.MAXJOBS.Orcl-EPM-dbfnon1
03 Feb 17 14:56:50 - Error nbjm (pid=19821) NBU status: 96, EMM status: No media is available
03 Feb 17 15:06:50 - job 28428 was restarted as job 28428
unable to allocate new media for backup, storage unit has none available  (96)
root@netbkp # ./nbemmcmd -listmedia -mediaid M018L4
NBEMMCMD, Version:6.5.6
Media GUID:                     4e026ace-e8a0-11e6-8000-8201d5312ddb
Media ID:                       M018L4
Partner:                        -
Media Type:                     HCART
Volume Group:                   000_00001_TLD
Application:                    Netbackup
Media Flags:                    1
Description:                    Added by Media Manager
Barcode:                        EPM018L4
Partner Barcode:                --------
Last Write Host:                NONE
Created:                        02/01/2017 10:03
Time Assigned:                  -
First Mount:                    02/01/2017 10:44
Last Mount:                     02/02/2017 15:45
Volume Expiration:              -
Data Expiration:                -
Last Written:                   -
Last Read:                      -
Robot Type:                     TLD
Robot Control Host:             netbkp
Robot Number:                   1
Slot:                           18
Side/Face:                      -
Cleanings Remaining:            -
Number of Mounts:               3
Maximum Mounts Allowed:         0
Media Status:                   ACTIVE
Kilobytes:                      0
Images:                         0
Valid Images:                   0
Retention Period:               -
Number of Restores:             0
Optical Header Size Bytes:      0
Optical Sector Size Bytes:      0
Optical Partition Size Bytes:   0
Last Header Offset:             0
Adamm Guid:                     00000000-0000-0000-0000-000000000000
Rsm Guid:                       00000000-0000-0000-0000-000000000000
Origin Host:                    NONE
Master Host:                    netbkp
Server Group:
Upgrade Conflicts Flag:
Pool Number:                    9
Volume Pool:                    Oracle-Kept_AtDC
Previous Pool Name:             -
Vault Flags:                    -
Vault Container:                -
Vault Name:                     -
Vault Slot:                     -
Session ID:                     -
Date Vaulted:                   -
Return Date:                    -
Command completed successfully.
  • Marianne's avatar
    8 years ago

    bpexpdate only deletes information from NBU catalog. It does not format or do anything to the media. In other words, old backup data and the previous internal label is not wiped or overwritten. When the tape is about to be re-used, only backup data is overwritten, not the internal label. 
    When NBU sees another internal label that does not match the media-id, if freezes the media. This is perfectly normal as it may be media from another environment with valid data and someone has stuck another label on the tape.

    See Option 2 in my previous post:

    Relabel the LTO4 media to match current Media ID Generation behaviour:
    Unfreeze media, then use Label option to overwrite internal label. De-select 'Verify label' tick-box.

9 Replies

  • Hi

    In order to be able to use LTO4 media for writes in LTO5 drives you need to change the media type from current HCART to (most probably) HCART2 - as your LTO5 drives are HCART2. So the drive media type has to match the cartridge media type.... to change all LTO4 from hcart to hcart2 (or what ever is configured at your env for LTO5) you can use
    (Change volume's media type)
      vmchange [-h <EMM_server> | <volume_database_host>]
               -new_mt <media_type> -m <media_id>

     Of course all these media should be unfrozen, ie:

      -freeze|-unfreeze|-suspend|-unsuspend -m <media_id> [-h <hostname>] [-v]

    Also you can change some LTO5 drives types from hcart2 to hcart and create new STU... up to you...

    • yogahariman's avatar
      Level 3

      Hi quebek,

      but in my environment, my LTO5 using HCART just the same way with my LTO4 using HCART too..

      so, i think i can't change HCART in my case.


      • quebek's avatar

        ok - how could I have tell... ;)

        then run

        bperror -media -U -hoursago

        to figure out why media were frozen... these are not getting frozne without any reason, right?