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unknown medium changer

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racmaster
Occasional Contributor

unknown medium changer

i cannot use the autochanger on HP Storageworks MSL2024 tape library. under the device manager it is recognized as 2 devices

1st device: Tape drives - HP LTO Ultrium-2 drive

2nd device: Medium changer - Unknown medium changer.

when i try to look for driver update, there is nothing found. on hp drivers page for the MSL2024 i can find 3 packages. one for LTT utility, one for firmware and one for uninstalling. i have succesfully installed the newest firmware few days ago, restarted both, storage device and whole server too. medium changer is still not recognized and cannot be used in Legato backup utility...

autochanger is enabled manually on the tape library, during the boot it is recognized under the scsi controller, tape library has LUN 0, the changer has LUN 1.

how can i make it working properly.
13 REPLIES
rariasn
Honored Contributor

Re: unknown medium changer

Hi racmaster,

. configure "schgr" driver parameter in kernel (reboot).

- Sample ioscan "output" afther this change:

anaya:/stand#ioscan -fnC autoch
Class I H/W Path Driver S/W State H/W Type Description
=========================================================================
autoch 1 0/10/0/0.98.14.255.1.3.0 schgr CLAIMED DEVICE HP M
SL6000 Series
/dev/rac/c15t3d0
autoch 0 0/12/0/0.33.30.255.1.3.0 schgr CLAIMED DEVICE HP M
SL6000 Series
/dev/rac/c8t3d0


rgs,

ran
Kenan Erdey
Honored Contributor

Re: unknown medium changer

hi;

acc. to your attachment, the changer is connected to windows machine. i also see changer as unknown media changer in our server. but legato works. can it be that you didn't run jbconfig from command line ?
Computers have lots of memory but no imagination
racmaster
Occasional Contributor

Re: unknown medium changer

im sorry rariasn, server runs under win2003 standard edition... your reply looks like from linux...
rariasn
Honored Contributor

Re: unknown medium changer

sorry,

maybe again,

ran
racmaster
Occasional Contributor

Re: unknown medium changer

hi kenan,

i didn't run jbconfig from command line. i came to server with the tape allready installed like i wrote before. im unable to find out what was allready done about the tape before...

when i try to enable autochanger in legato, i get the error message shown in this attachment.

do u have an idea how to continue from this point?
Kenan Erdey
Honored Contributor

Re: unknown medium changer

hi;

in device manager only one tape driver is shown. i don't know how many drives acctually you have. if two you have hardware problems because of scsi connections maybe.

# inquire command list you scsi devices.you can run this command.

if you have one drive really and legato gives an error about missing drive, in legato administrator delete the autochanger and reconfigure it.
Computers have lots of memory but no imagination
Kenan Erdey
Honored Contributor

Re: unknown medium changer

racmaster, is there any changes ?
Computers have lots of memory but no imagination
Curtis Ballard
Honored Contributor

Re: unknown medium changer

Can you please load a copy of "HP StorageWorks Library and Tape Tools" and then pull a support ticket, zip the results, and post them here or mail to ltt_team@hp.com and ask that the ticket be sent to Curtis Ballard?

What kind of MSL2024 do you have? The library can have 2 drives or 1 drive when running LTO 2. I'm assuming you only have one drive installed from your message. For some reason Legato thinks you have 2 drives so we need to figure out why.

Could you please run "Restore Defaults" from the web interface and see if that resolves the issue?
racmaster
Occasional Contributor

Re: unknown medium changer

hi curtis, i sent the requested email to the specified adress as u wanted.
racmaster
Occasional Contributor

Re: unknown medium changer

hi kenan, i was away for a day.

when i delete the autochnager from legato and reconfigure it again, there is still the problem about searching the non existing second drive, since there is just 1 drive... autochanger simply cannot be enabled because of this. attached im sending u the screenshot of inquire command result.
Curtis Ballard
Honored Contributor
Solution

Re: unknown medium changer

We discussed offline that I didn't provide enough information about "Reset Defaults"

Using the web interfact "http:// you can select a tab called "Configuration" and under that there is a tab called "Restore Defaults" then there is a selection for "Restore Factory Defaults"

The MSL 2024/4048 libraries are designed to remember drives after they are removed from the library to prevent having an application error if you have to remove a drive for repair. As a side effect of that behavior you have to issue "Restore Defaults" to clear the information about that drive if the library ever reports a drive that will not be put back in.
abcxyz
Frequent Advisor

Re: unknown medium changer

Hi,

Is there any Driver available for the Medium Changer in MSL 2024/4048.

As it shows Unknown Medium Changer in Device Manager.
Ian Grobler
Frequent Advisor

Re: unknown medium changer

Try connecting to Windows Update for the driver. If this does not work I have uploaded the Server 2003 driver in the following thread:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1050640