LTO2 Tapes cannot mount / write

[NMT_screen]

Hi Gentlemen ,
I am runnin the netbackup 3.4 .  Recently I just replaced the tapes with the same tape lable under one of the media server when tape library is online . After that I have this issue for mounting . Message is as follow in the Job Status. The "TAPE1" is mounting for more than 3 hours but not mounted. This is the problem TAPE1 . Not only this TAPE1 , all tapes under this MediaServer1 are having same problem as follow. But other tapes under different media servers are running normal .

"Job xxxx" Started : 05/05/2009 17:05:30
Storage Unit : LTO- MediaServer1 Elapsed : 03:23:00
Media Server : MediaServer1 Ended :
Status : 05/05/2009 17:38:20 - Connecting
05/05/2009 17:38:10 - Connected: connect
05/05/2009 17:38:10 - mounting TAPE1

Current 0
K Bytes Written

Current
Files Writtern 1

Estimated completing Previous backup data is not available.
*************************************************************************************************************
Pls.compare with the other tapes under different media server. This is normal backuping tape .

Job xxxx" Started : 05/05/2009 17:05:30
Storage Unit : LTO- MediaServer2 Elapsed : 17:23:24
Media Server : MediaServer2 Ended : 05/05/2009 16:22:30

Status : 05/05/2009 17:38:20 - Connecting
05/05/2009 17:38:10 - Connected: connect
05/05/2009 17:38:10 - mounting TAPE2
05/05/2009 17:38:10 - mounted; mount time: 000:01:01
05/05/2009 17:38:10 - positioning to file 34
05/05/2009 17:38:10 - positioned: position time 000:17:01
05/05/2009 17:38:10 - begin writing
05/05/2009 18:50:10 - end writing ; writing time 000:15:00

Current 0
K Bytes Written 6693088

Current 93342
Files Writtern 1

Estimated %
completing 100 %

*****************************************************************************************
They are running on Netbackup 3.4 server and media tapes are just replaced on line ( w/o shutting down the tape library ). The TAPE1 from the media server 1 is mounting forever and never get mounted and written. Is it due to media tape problem or netbackup 3.4 problem? Kindly advise since I am having this problem for long time.

[J_H_Is_gone]

It sounds like you might not have the tape drives configured correctly.

Example 2 drives

on server you have rmt0 and rmt1

you configer drives in netbackup
robot drive 1 is rmt1 and robot drive 2 is rmt0

so robot mounts tape in robot drive 1, so media server is looking for a tape to show up in rmt1....

but....

robot drive 1 is NOT REALLY rmt1 it really is rmt0....
so the media server NEVER sees the tape mount in rmt1.

Try to conpare the serial numbers of the drives in your media server, to the drive locations in the library and make sure they match.

In my example robot drive 1 should be rmt0 and robot drive 2 should be rmt1.


I don't have to know how to spell....I work on Unix.

(is there a sale on this issue, I think this is the third one I have read today that seems to be the same problem)

[Andy_Welburn]

(is there a sale on this issue, I think this is the third one I have read today that seems to be the same problem)

Keep looking Judy, there's probably more!

[NMT_screen]

May I know where do I check ?
According to the master server, device management ,
I have 4 drives .

Drive  0  hcart   1    LTODrv1   /dev/rmt/0cbn
Drive  1  hcart   2    LTODrv2   /dev/rmt/1cbn
Drive  2  hcart   3    LTODrv3   /dev/rmt/2cbn
Drive  3  hcart   4    LTODrv4   /dev/rmt/3cbn

According to your message
"Try to conpare the serial numbers of the drives in your media server, to the drive locations in the library and make sure they match"

May I know where should I go see the serial numbers in my media server ? I mean any path / location ?

[J_H_Is_gone]

I know how to do it on AIX using diag but not a clue on solrias.

but you can test.

use robtest and move a tape to robot drive 1.

look to see what you have that drive setup as for rmt

now on your server do a tar to that rmt. 
if it works then your robot driver number and your rmt match

if not the try a tar to another rmt until you find the rmt that sees the tape in the drive.

[scorpy_582]

i have not worked on 3.4 but i think /usr/openv/volmgr/bin/scan command should give you the serial number and passthru name.

also try for tpautoconf -report_disc to check if there are any discrepencies.

[netbackup_rooki]

tpautoconfig -t will give you serial #

[netbackup_rooki]

and make sure your drive types and media is same density.

[NMT_screen]

I run the sgscan in the netbackup master server,
"./sgscan "

Netbackup# ./sgscan
/dev/sg/c0t0l0: Disk (/dev/rdsk/c0t0d0): "SEAGATE ST318404LSUN18G"
/dev/sg/c0t1l0: Disk (/dev/rdsk/c0t1d0): "SEAGATE ST318404LSUN18G"
/dev/sg/c0t6l0: Cdrom: "TOSHIBA XM6201TASUN32XCD"
/dev/sg/c2t0l0: Error opening /dev/sg/c2t0l0, No such device or address
/dev/sg/c2t0l1: Error opening /dev/sg/c2t0l1, No such device or address
/dev/sg/c2t0l2: Error opening /dev/sg/c2t0l2, No such device or address
/dev/sg/c2t0l3: Error opening /dev/sg/c2t0l3, No such device or address
/dev/sg/c2t0l4: Error opening /dev/sg/c2t0l4, No such device or address
/dev/sg/c2t0l5: Error opening /dev/sg/c2t0l5, No such device or address
/dev/sg/c2t0l6: Error opening /dev/sg/c2t0l6, No such device or address
/dev/sg/c2t0l7: Error opening /dev/sg/c2t0l7, No such device or address
/dev/sg/c2t10l0: Changer: "OVERLANDNEO Series"
/dev/sg/c2t10l1: Tape (/dev/rmt/0): "HP Ultrium 2-SCSI"
/dev/sg/c2t10l2: Tape (/dev/rmt/1): "HP Ultrium 2-SCSI"
/dev/sg/c2t11l0: Tape (/dev/rmt/2): "HP Ultrium 2-SCSI"
/dev/sg/c2t11l1: Tape (/dev/rmt/3): "HP Ultrium 2-SCSI"


Netbackuserver# tpautoconf -show

OVERLANDNEO Series 0604 /dev/sg/c2t10l0
Drive 1: "MXP8H03JTG" HP Ultrium 2-SCSI F6CH "/dev/rmt/0cbn"
Drive 2: "HUL4K03494" HP Ultrium 2-SCSI F6CH "/dev/rmt/1cbn"
Drive 3: "MXP8H026SV" HP Ultrium 2-SCSI F6CH "/dev/rmt/2cbn"
Drive 4: "MXP6M02Q0C" HP Ultrium 2-SCSI F6CH "/dev/rmt/3cbn"

Netbackupserver# tpconfig -d
Index DriveName DrivePath Type Multihost Status
***** ********* ********** **** ********* ******
0 LTODrv1 /dev/rmt/0cbn hcart Yes UP
TLD(2) Definition DRIVE=1
1 LTODrv2 /dev/rmt/1cbn hcart Yes UP
TLD(2) Definition DRIVE=2
2 LTODrv3 /dev/rmt/2cbn hcart Yes UP
TLD(2) Definition DRIVE=3
3 LTODrv4 /dev/rmt/3cbn hcart Yes UP
TLD(2) Definition DRIVE=4

Currently defined robotics are:
TLD(2) robotic path = /dev/sg/c2t10l0, volume database host =  Netbackupserver

I still cannot mount/ write to the tape. Pls. help to advise.

[NMT_screen]

The drive type is same density as the media.   ( hcart ) .

Pls. help to advise. Still cannot mount / write.

[NMT_screen]

Hi ,
         I still cannot mount / write.

netbackupserver# tpautoconf -show

OVERLANDNEO Series 0604 /dev/sg/c2t10l0
Drive 1: "MXP8H03JTG" HP Ultrium 2-SCSI F6CH "/dev/rmt/0cbn"
Drive 2: "HUL4K03494" HP Ultrium 2-SCSI F6CH "/dev/rmt/1cbn"
Drive 3: "MXP8H026SV" HP Ultrium 2-SCSI F6CH "/dev/rmt/2cbn"
Drive 4: "MXP6M02Q0C" HP Ultrium 2-SCSI F6CH "/dev/rmt/3cbn"

Pls. advise to procceed.

[netbackup_rooki · Accepted solution]

did you try to robtest as Judy had mentioned earlier...

/usr/openv/netbackup/volmgr/robtest  and then follow instructions.

try moving a tape to tape drive.

once mounted,  you can

mt -f <device path> status

and try to unload and move the tape back to orignal slot.

[NMT_screen]

Hi Gentlemen,
                  I have managed to  mount ( Read / Write ) the tapes in this media server group. Many thanks for all of  your support to resolve this issue.

Repects,