"schgr" driver disappeared in kernel

[Keynes Lee]

How can I find it back ?

[Keynes Lee]

BTW the OS version is hp-ux 11.11

[Horia Chirculescu]

Hello,

You could use SAM/kernel configuration to enable the requested driver in your kernel. You must restart the system in order to build/install the new kernel.

Best regards,
Horia.

[Keynes Lee]

I can't see the driver "schgr" in SAM --> driver.

[Adisuria Wangsadinata_1]

Hi Keynes,

Good day to you !
Please use SAM to put the 'schgr' kernel driver back to your system. Downtime is required for this task.

login as root > SAM > Kernel Configuration > Drivers > schgr > Add Driver(s) to Kernel

Hope this information can help.

Regards,
Adi.

[Keynes Lee]

Hi

I can't "schgr" in
"SAM > Kernel Configuration > Drivers >"

Is any other way ?

[Horia Chirculescu]

You should go to

SAM/Kernel configuration/Drivers

I suppose you had the driver in the kernel somewhere in the past, right?

Something was changed like a kernel rebuid...

Horia.

[Horia Chirculescu]

What does it say to you:

kmsystem -q schgr

Horia.

[Keynes Lee]

[bqyhp01]/ # kmsystem -q schgr
Module Configured Loadable
=================================================
schgr N -

[Horia Chirculescu]

You could also check if the system find the corresponding hardware using ioscan.
(ioscan -d)

Horia.

[Adisuria Wangsadinata_1]

Hi Keynes,

Thanks for your update.
BTW, may I know what's the purpose of this 'schgr' driver ? Do you have this driver on your system previously ?

For what I understand, the 'schgr' driver is use to control the robotic arm on the library tape. Sometimes, the library need 'sctl' than 'schgr'.

Regards,
Adi.

[Keynes Lee]

I need this driver to install a MSL6060 tape drive. For enabling "autoch"

[Keynes Lee]

unknown -1 1/0/4/0/0.2.2.255.0.0.0 UNCLAIMED UNKNOWN HP MSL6000 Series

[Horia Chirculescu]

kmsystem -c Y schgr

would configure the driver in your kernel.

Then you must rebuild the kernel manually using mk_kernel (read manual page)


Bets regards,
Horia.

[Horia Chirculescu]

Manual rebuild of the kernel:

cd /stand/build
mk_kernel -s /stand/system -o /stand/vmunix

Best regards from Romania,
Horia.

[Adisuria Wangsadinata_1]

Hi Keynes,

Please execute the command from Horia 1st and see if the system can add the 'schgr' driver.

There's another thing that you need to have for the tape library, the 'stape' driver.

See output of the command below :

# tddiag|egrep -i stape
# tddiag|egrep -i sctl
# tddiag|egrep -i schgr

Last thing you need to take care is try to install the latest patch of SCSI tape (PHKL_34552) and its dependencies.

Hope this information can help.

Regards,
Adi.

[Keynes Lee]

Hi Hoira

I just tried to rebuild the kernal by the command you provided, but get errors as below

[bqyhp01]/stand/build # mk_kernel -s /stand/system -o /stand/vmunix
Provide configuration information for the "schgr" (SCSI changer) driver. * *
config: line not within a table boundary

[Keynes Lee]

Hi Adisuria

I already have PHKL_34552 installed. And I just verified there is no new version for this patch

[Horia Chirculescu]

>Provide configuration information for the "schgr" (SCSI changer) driver.

This means that system configuration file does not have the pertinent information about the driver. According to man autochanger ( http://docs.hp.com/en/B2355-60130/autochanger.7.html ),

"By default, schgr and eschgr are not included in the system configuration (/stand/system) file."

You must add that information in the system file.

vi system
add a line entry at the end of the file like this:

driver 1/0/4/0/0.2.2.255.0.0.0 sctl

(this is the HW path from your provided ioscan -f information)

Best regards from Romania,
Horia.

[Horia Chirculescu]

Of course...

driver 1/0/4/0/0.2.2.255.0.0.0 schgr

Horia.

[Horia Chirculescu · Accepted solution]

... and one more thing: the system file can be created from the running kernel by invoking an utility called system_prep (from /usr/lbin/sysadm/)

cd /stand/build.

/usr/lbin/sysadm/system_prep -s system

And you should get the system file.

Best regards
Horia.

[Keynes Lee]

Issue resolved!

Thank you ALL for the kindly and rapidly support!