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ioscan cannot see drives of the MSL6000 tape library

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NDO
Super Advisor

ioscan cannot see drives of the MSL6000 tape library

Hi all!

Please can somebody help me on this one:
The output of ioscan -fnC tape is No_Hw as below:
mceldev[373]/ #ioscan -fnC tape
Class I H/W Path Driver S/W State H/W Type Description
========================================================================
tape 6 0/3/2/0.2.0.255.0.0.1 stape NO_HW DEVICE HP Ultrium 3-SCSI
/dev/rmt/6m /dev/rmt/6mn /dev/rmt/c39t0d1BEST /dev/rmt/c39t0d1BESTn
/dev/rmt/6mb /dev/rmt/6mnb /dev/rmt/c39t0d1BESTb /dev/rmt/c39t0d1BESTnb
tape 0 0/3/2/0.2.0.255.0.0.2 stape NO_HW DEVICE HP Ultrium 3-SCSI
/dev/rmt/0m /dev/rmt/0mn /dev/rmt/c39t0d2BEST /dev/rmt/c39t0d2BESTn
/dev/rmt/0mb /dev/rmt/0mnb /dev/rmt/c39t0d2BESTb /dev/rmt/c39t0d2BESTnb
tape 5 0/4/2/0.2.0.255.0.0.1 stape NO_HW DEVICE HP Ultrium 3-SCSI
/dev/rmt/5m /dev/rmt/5mn /dev/rmt/c37t0d1BEST /dev/rmt/c37t0d1BESTn
/dev/rmt/5mb /dev/rmt/5mnb /dev/rmt/c37t0d1BESTb /dev/rmt/c37t0d1BESTnb
tape 2 0/4/2/0.2.0.255.0.0.2 stape NO_HW DEVICE HP Ultrium 3-SCSI
/dev/rmt/2m /dev/rmt/2mn /dev/rmt/c37t0d2BEST /dev/rmt/c37t0d2BESTn
/dev/rmt/2mb /dev/rmt/2mnb /dev/rmt/c37t0d2BESTb /dev/rmt/c37t0d2BESTnb
tape 7 0/4/2/1.2.0.255.0.0.1 stape NO_HW DEVICE HP Ultrium 3-SCSI
/dev/rmt/7m /dev/rmt/7mn /dev/rmt/c38t0d1BEST /dev/rmt/c38t0d1BESTn
/dev/rmt/7mb /dev/rmt/7mnb /dev/rmt/c38t0d1BESTb /dev/rmt/c38t0d1BESTnb
tape 3 0/4/2/1.2.0.255.0.0.2 stape NO_HW DEVICE HP Ultrium 3-SCSI
/dev/rmt/3m /dev/rmt/3mn /dev/rmt/c38t0d2BEST /dev/rmt/c38t0d2BESTn
/dev/rmt/3mb /dev/rmt/3mnb /dev/rmt/c38t0d2BESTb /dev/rmt/c38t0d2BESTnb
mceldev[374]/ #ioscan -fk | grep schgr
autoch 0 0/3/2/0.2.0.255.0.0.0 schgr NO_HW DEVICE HP MSL6000 Series
autoch 2 0/4/2/0.2.0.255.0.0.0 schgr NO_HW DEVICE HP MSL6000 Series
autoch 3 0/4/2/1.2.0.255.0.0.0 schgr NO_HW DEVICE HP MSL6000 Series
mceldev[375]/ #

I know that I might have to loggin into the NSR router, but I´m new into this field , and I´ll be totaly lost once there.

regards
19 REPLIES
Torsten.
Acclaimed Contributor

Re: ioscan cannot see drives of the MSL6000 tape library

You are right.

Login to the MSL web interface to check if the library is alive and login to NSR to check if the library is connected to the SAN.

Hope this helps!
Regards
Torsten.

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NDO
Super Advisor

Re: ioscan cannot see drives of the MSL6000 tape library

the library is alive, because I can move tapes (media) into the drive, etc, but I found something: the fiber cable comming from the library to the switch, on that switch port, has no_light, so I moved that cable to the bottom switch, so now I can see two drives on ioscan, but there are still two drives that are No_HW

F.R.
Torsten.
Acclaimed Contributor

Re: ioscan cannot see drives of the MSL6000 tape library

I assume you have several NSRs, hence more cables.

Hope this helps!
Regards
Torsten.

__________________________________________________
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those who understand binary, and those who don't.

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NDO
Super Advisor

Re: ioscan cannot see drives of the MSL6000 tape library

Just Have one NSR, two switchs, 2 HSV controllers (EVA4000) and disks
Torsten.
Acclaimed Contributor

Re: ioscan cannot see drives of the MSL6000 tape library

Did you try a power cycle of the library?

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

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Torsten.
Acclaimed Contributor

Re: ioscan cannot see drives of the MSL6000 tape library

If you can see 2 drives now - how many drives are there? 2?

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
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NDO
Super Advisor

Re: ioscan cannot see drives of the MSL6000 tape library

from the touch screen of the library; I did a power down, them up
Torsten.
Acclaimed Contributor

Re: ioscan cannot see drives of the MSL6000 tape library

If I assume you have 2 drives installed and now you can see 2 drives, it should be OK now, right?

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
NDO
Super Advisor

Re: ioscan cannot see drives of the MSL6000 tape library

yes and not. Why is that I still see No_Hw on another path?

F.R:
Torsten.
Acclaimed Contributor

Re: ioscan cannot see drives of the MSL6000 tape library

If you connect the cables to another switch port, the hardware path changes and you get new device files, just like for a new device.

The system "remember" the old devices until the next reboot, so you see them as "NO_HW".

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
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If you feel this was helpful please click the KUDOS! thumb below!   
NDO
Super Advisor

Re: ioscan cannot see drives of the MSL6000 tape library

Hi I seem to have another problem now, is that I´m not able to do backups, but I´m able to do restores. I´m using data protector 5

regards

F.R.
Torsten.
Acclaimed Contributor

Re: ioscan cannot see drives of the MSL6000 tape library

"I'm not able to ..." is unlikely an error message.

;-)

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

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If you feel this was helpful please click the KUDOS! thumb below!   
NDO
Super Advisor

Re: ioscan cannot see drives of the MSL6000 tape library

Hi

what I was trying to say is that, now as things stands, I cannot do backups, but I can restore.

Regards

F.R.
Torsten.
Acclaimed Contributor

Re: ioscan cannot see drives of the MSL6000 tape library

Did you notice the various device files:

0mn
2mn
3mn
5mn
7mn


Maybe your backup software is looking for 0mn, but it is now 7mn, for example.

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

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If you feel this was helpful please click the KUDOS! thumb below!   
NDO
Super Advisor

Re: ioscan cannot see drives of the MSL6000 tape library

Hi

You are right, all the device filenames have changed now. Do I have to tel DP the new device file names?

regards

F.R.

Torsten.
Acclaimed Contributor

Re: ioscan cannot see drives of the MSL6000 tape library

Because of the changed hardware path (other switch port) you get new device files.

You need to adjust your application.

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
NDO
Super Advisor

Re: ioscan cannot see drives of the MSL6000 tape library

Hi!

I think we are on the right path, I´m no expert in DP, but I try to configure new paths (/dev/rmt/9mn) i.e. the same ones that appear on O/P of ioscan -fnC tape, but backups are failing. One thing I noticed is that after reboot the ioscan shows me only 6 paths as opposed to 12 that show me previously. Is that because we moved the FC cable from the top switch to the bottom one?
So now I cant see 6 paths...

Regards

F.R.
Torsten.
Acclaimed Contributor
Solution

Re: ioscan cannot see drives of the MSL6000 tape library

I can see *no* paths

;-)

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
NDO
Super Advisor

Re: ioscan cannot see drives of the MSL6000 tape library

Hi

I´m closing this thread, I´ve call the HP guys.
Thanks a lot Torsten (I´ve already assign points)

Regards

F.R.