Forum Discussion

NBU_13's avatar
NBU_13
Level 6
13 years ago

Not able to import LTO4 tape by using LTO5 drive.

Hi,

I need a help, I have 2 master servers, A and B,

Master server (MasterA) is V6.5 and using LTO4 tapes for backup, master server (MasterB) is V7.1 and using LTO5 tapes and drives, Now, I want to use LTO4 tapes in masterB with LTO5 drives, So I put LTO4 tapes in masterB and run Robot inventory, tapes are updated in masterB and I ran import to update catalog, I updated density type as HCART2 for LTO4, LTO5 tapes, drives and storage unit is also in HCART,  but tapes are not mounting, its giving error  as below :

Any one please help me to find solution for this issue.

 

Error :

8/17/2012 12:23:33 PM - begin Import

8/17/2012 12:23:34 PM - Info bptm(pid=7684) start           

8/17/2012 12:23:34 PM - started process bptm (7684)

8/17/2012 12:23:34 PM - Info bptm(pid=7684) Waiting for mount of media id 0073L2 (copy 1) on server nbk-svs.

8/17/2012 12:23:34 PM - started process bptm (7684)

8/17/2012 12:23:34 PM - mounting 0073L2

8/17/2012 12:23:34 PM - Info bptm(pid=7684) INF - Waiting for mount of media id 0073L2 on server nbk-svs for reading.

8/17/2012 12:23:34 PM - requesting resource 0073L2

8/17/2012 12:23:34 PM - granted resource 0073L2

8/17/2012 12:23:34 PM - granted resource HP.ULTRIUM5-SCSI.002

8/17/2012 12:23:38 PM - Error bptm(pid=7684) error requesting media, TpErrno = Robot operation failed    

8/17/2012 12:23:38 PM - current media 0073L2 complete, requesting next resource HP.ULTRIUM5-SCSI.002:LTO4tapes:0073L2

8/17/2012 12:23:41 PM - Info bptm(pid=7684) Waiting for mount of media id 0073L2 (copy 1) on server nbk-svs.

8/17/2012 12:23:41 PM - started process bptm (7684)

8/17/2012 12:23:41 PM - mounting 0073L2

8/17/2012 12:23:41 PM - Info bptm(pid=7684) INF - Waiting for mount of media id 0073L2 on server nbk-svs for reading.

8/17/2012 12:23:41 PM - granted resource 0073L2

8/17/2012 12:23:41 PM - granted resource HP.ULTRIUM5-SCSI.001

8/17/2012 12:23:45 PM - Error bptm(pid=7684) error requesting media, TpErrno = Robot operation failed    

8/17/2012 12:23:45 PM - current media 0073L2 complete, requesting next resource HP.ULTRIUM5-SCSI.001:LTO4tapes:0073L2

8/17/2012 12:23:48 PM - awaiting resource HP.ULTRIUM5-SCSI.001:LTO4tapes:0073L2 A pending request has been generated for this resource request.

  Operator action may be required. Pending Action: Tape is unmountable.,

  Media ID: 0073L2, Barcode: 000073L2, Density: hcart2, Access Mode: Read,

  Action Drive Name: N/A, Action Media Server: N/A, Robot Number: 0, Robot Type: TLD,

  Volume Group: 000_00000_TLD, Action Acs: N/A, Action Lsm: N/A

7.1.x and Earlier
Backup and Recovery
NetBackup
Troubleshooting
  • Marianne's avatar
    Marianne
    13 years ago

    We have previously done this where internal and external media id's do not match:

    vmadd -m 0070L2 -mt <media_type>  -b <new-barcode>  -p <pool_number>
    This should add the media as standalone. Manually load the tape in a slot in the robot (e.g. robtest). 
    Inventory the robot to update media id 0070L2 with the correct slot # in the robot.

     

    ONE MORE thing - how sure are you that 0070L2 is an LTO4 tape?
    Same way that the robot refuses to load L2 tape into LTO5 drive, L2 tape can only be loaded into LTO4 drive for restore, not for backup. Mount request for backup to L2 tape on LTO4 drive should have been rejected. 

  • cbode's avatar
    cbode
    Level 4
    13 years ago

    The media type must match the drive, so if the LTO5 drives trying to do the read are HCART2 you must modify the barcode rule so that the media are also imported as HCART2. This is a netbackup imposed compatiblity restriction, the fact that LTO-5 drives can natively read LTO-4 tapes is not sufficient to get netbackup to perform the mount.

  • mph999's avatar
    mph999
    Level 6
    13 years ago

    " , I updated density type as HCART2 for LTO4, LTO5 tapes, drives and storage unit is also in HCART"

    Do you mean that LTO5 tapes and drives are HCART2 ?

    I think maybe you have mis-typed ?

    No matter, make sure the density of the LTO4 tapes is the same as the density of the LTO5 drives.

     

    Presuming the above is correct, if you run robtest, can you move one of teh LTO4 tapes into one of the LTO5 drives, lets confirm this first.

    martin

  • NBU_13's avatar
    NBU_13
    Level 6
    13 years ago

    Thanks for comment,

    My LTO4 tapes and LTO5 drives are in same density HCART2.

    I tried to run robtest, but it gives error, Iam not able to mount tape manually with drive.

    By i can able to move LTO5 tape with LTO5 drives from Library through web, So Robot is working fine.

    is there any other way to mount tape with drive by command ?

     

  • mph999's avatar
    mph999
    Level 6
    13 years ago

    This will probably be the problem, what is the error ?

    OK, now trust me on this :

    "By i can able to move LTO5 tape with LTO5 drives from Library through web, So Robot is working fine."

    No, it ONLY means the robot mechanics work.

    It does not mean the robot is working fully.

    robtest is not really a NBU command (trust me on this also) ...  It sends scsi commands to the robot to move tapes, if it fails (as in your case)  it is almost certain (99.99%) that the cause is not NBU.

    If the error you see in robtest looks like this :

    0x<some number> it will be a scsi sense code meaning your library has some problem, not NBU.

    Perhaps you could post up the error from robtest.

    Martin

  • NBU_13's avatar
    NBU_13
    Level 6
    13 years ago

    Just for confirmation,

    question1 :  in masterB, LTO5 tape is showing media id as 0079L5, but my LTO4 tape is showing media id as 0080L2, maybe the robot think like tape 0080L2 means its LTO2 tape ?

    question2 : From library web, I mount LTO5 tape with LTO5 drives, its mounted successfully, but whilw try to mount LTO4 tape with same drive LTO5, its give error as incompatiable device.

  • mph999's avatar
    mph999
    Level 6
    13 years ago

    Yes, some libraries use the barcode on the tapes for compatability reasons.

    The robtest error will probably either show, or 'translate' to incompatible media.

    Martin

  • mph999's avatar
    mph999
    Level 6
    13 years ago

     

    From "Automated Tape Library - Barcode Label Technical Brief "  (Oracle document)
     
    The media ID label is the way a particular type of tape cartridge is identified by the library.
    To make sure that the correct media type is installed in the correct tape drive in an Any Cartridge, Any SlotTM library, a method to identify the type of media was needed. The use of media ID labels allows a single library or library complex to mix drive types and media types.
     
    Martin
  • NBU_13's avatar
    NBU_13
    Level 6
    13 years ago

    ok, can you tell me, how can i change 0070L2 in to 0070L4 without affecting backup image in tape ?

  • NBU_13's avatar
    NBU_13
    Level 6
    13 years ago

    ok, can you tell me, how can i change media id 0070L2 in to 0070L4 media id without affecting backup image in tape ? 

  • mph999's avatar
    mph999
    Level 6
    13 years ago

    You can't ...

    The barcode could be changed with the vmchange comand, but it is impossible to change the media id of a media that contains images.

    The mediaid is written to the beinning of the tape ... example

     

    0000000   V   O   L   1   R   0   T   P   0   0  \0  \0  \0  \0  \0  \0
    0000020  \0  \0  \0  \0  \0  \0  \0 001  \0  \0  \0  \f   P   1   Ø    
    0000040  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
    0000060  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \n  \0  \0  \0 001
    0000100  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0 004  \0  \0  \0  \0  \0
    0000120  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
    *
    0000160   T   h   I   s       I   s       A       B   P       t   A   p
    0000200   E       h   E   a   D   e   r  \0  \0  \0  \0  \0  \0  \0  \0
    0000220  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
     
    This is the media header on the beginning of one of my tapes, we see  the media id on the 1st line "R0TP00".
     
    As it is written on the tape it cannot be changed until the tape is reused - no way around this.
     
    Unfortunately, you are not going to be able to import this tape.  NBU doesn't really care, it is your library that is preventing it.
     
    The problem started as an LTO2 type label was placed on a LTO4 tape.
     
    Apologies that I can't be more help.
     
    Martin