topic Re: adding a new device in Operating System - HP-UX

adding a new device

kunjuttan — Fri, 18 Dec 2009 05:57:16 GMT

hi,
I want to know if I add some device to my server like a new hdd or an external tape drive,it will automatically detect or not?If not what is to be done

Re: adding a new device

Torsten. — Fri, 18 Dec 2009 06:00:52 GMT

An "ioscan" will detect such devices. If the driver is already loaded, you need to install the device file and you are ready to go.

Otherwise you need to include the driver, e.g. stape for tapes (use "kcmodule stape=static" for this).

Re: adding a new device

kunjuttan — Fri, 18 Dec 2009 06:08:58 GMT

"If the driver is already loaded, you need to install the device file and you are ready to go."
You mean creating device files with insf or mksf command.right?But if I reboot the sever I think it will automatically get created.

"Otherwise you need to include the driver, e.g. stape for tapes (use "kcmodule stape=static" for this)."
Can you please make that clear??

Re: adding a new device

Torsten. — Fri, 18 Dec 2009 06:13:13 GMT

If a device class like tape was not present during install, the driver is not loaded. Even a reboot will not change this.

You see UNKNOWN in ioscan.

So you need to include the driver now.

Re: adding a new device

kunjuttan — Fri, 18 Dec 2009 09:39:22 GMT

"If the driver is already loaded, you need to install the device file and you are ready to go."
But how to install the device files?

Re: adding a new device

Gangadhar Kenguva — Fri, 18 Dec 2009 10:00:01 GMT

use insf to install the device files for new devices.

Re: adding a new device

kunjuttan — Fri, 18 Dec 2009 10:21:38 GMT

can you pls give the syntax??

Re: adding a new device

melvyn burnard — Fri, 18 Dec 2009 11:03:13 GMT

man insf

Re: adding a new device

R.K. # — Fri, 18 Dec 2009 11:12:22 GMT

# insf -eC disk # for disk
# insf -eC tape # for tape

e --> Reinstall the special files for pseudo-drivers and existing devices. This is useful for restoring special files if one or more have been removed.

C --> Match devices that belong to a given device class.

To install special files for all devices:
# insf -e

Re: adding a new device

kunjuttan — Fri, 18 Dec 2009 11:48:51 GMT

Ok,Thanks.
Otherwise you need to include the driver, e.g. stape for tapes (use "kcmodule stape=static" for this)."
You were telling that,if the driver is not there then we have to do the following?I think it is kerenel reconfiguration?right?

Re: adding a new device

Torsten. — Fri, 18 Dec 2009 11:51:40 GMT

Let's assume you connect a tape and it is listed as UNKNOWN in ioscan.

You include the stape driver, the system builds a new kernel and reboots. That's it.

Re: adding a new device

kunjuttan — Fri, 18 Dec 2009 11:55:22 GMT

We have to download the driver.right?

Re: adding a new device

Torsten. — Fri, 18 Dec 2009 11:56:58 GMT

It depends on the device.

For FC cards or NICs probably yes, for tapes it is already there.

Re: adding a new device

kunjuttan — Fri, 18 Dec 2009 12:04:49 GMT

thanks.

Re: adding a new device

Torsten. — Fri, 18 Dec 2009 12:04:53 GMT

Example for a tape:

ioscan:

...
unknown -1 0/1/1/1.3.0 UNCLAIMED UNKNOWN HP Ultriu
m 2-SC
...

/usr/sbin/kcmodule stape=static

Do you want to proceed ? (y/n) [n] = y

* The automatic 'backup' configuration has been updated.
* Building a new kernel for configuration 'nextboot'...
* Adding version information to new kernel...
* The requested changes have been saved, and will take effect at
next boot.

--- reboot ---

# ioscan -fnkCtape
Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
tape 0 0/1/1/1.3.0 stape CLAIMED DEVICE HP Ultrium 2-SCSI
/dev/rmt/0m /dev/rmt/c3t3d0BEST
/dev/rmt/0mb /dev/rmt/c3t3d0BESTb
/dev/rmt/0mn /dev/rmt/c3t3d0BESTn
/dev/rmt/0mnb /dev/rmt/c3t3d0BESTnb