How to change SCSI adress

[David_246]

Hi,

How can I change a SCSI-adress of our CDROM ?
It is currently target'ed at c0t6d0 (I know it's standard), but we need it to have target'ed as c0t1d0.

I know Sun does this using /etc/path_to_inst to change the SCSI adress. Any ideas ?

Regs David

[Stefan Farrelly · Accepted solution]

Its a jumper on the back of the physical cdrom unit. You need to remove/open it up and change it from scsi 6 to 1.

[Ross Zubritski]

David,

Change the switch on the back of the DVD to a "1".

Regards,

RZ

[Eugeny Brychkov]

As I remember disks are usually have highest priority SCSI Ids (6, 5, 4), but DAT and CDROM drives lower priority (2, 1, 0). So I do not agree with 'standard'. Maybe you wanted to say 'by default for this drive manufacturer'?
Agree with all others - you need to get CDROM drive out of the server and change jumper setting. Do it offline (with server down). During next boot new device files for CDROM at new 'location' will be automatically created
Eugeny

[David_246]

Allright your correct :)

How to make it c1 instead of c0 ??
Does HP have a file for this ??

What do I need to do to get rid of the old c0t6d0 and how do I get my new c0t1d0 shown in the OS.

To compare, Sun has : touch /reconfigure to reconfigure.
and drvconfig;disks;devlinks (or fsadm in Sol 8/9) to update/remove your devices.

Regs David

[Robert-Jan Goossens]

Hi David,

Take a look at the insf and the rmsf commands.

Robert-Jan.

[David_246]

All great answers, espec the insf command. The last thing I am looking for is how to change c0t1d0 into c1t1d0.

Is there not a file as Sun has the /etc/path_to_inst.

After that I prefer to assign points as I don't want to give the bunny away yet.

Regs David

[James Murtagh]

Hi David,

You need to rebuild your ioconfig. Normal procedure:

1) Create a new config template:

# ioscan -f | grep -e INTERFACE -e DEVICE | grep -v target | awk '{print $3, $1, $2}' > /infile

2) Edit this file and change the interface field corresponding to the bus the drive is on.

3) Bring the system down to run level 1:

# init 1

4) Apply the new config

# /sbin/ioinit -f /infile -r

The system should now reboot and the changes should be reflected in ioscan etc.

You didn't mention what OS you were using but make sure the latest recommended ioinit patch is installed.

Regards,

James.

[James Murtagh]

Hi David,

Sorry, should have mentioned this but be careful of any conflicts if the new instance number you are changing to is already in use by other hardware. This should be obvious from an ioscan or from the new config file.

There are a few other ways to do this, one garauntees success but you need an unsupported tool from HP to do it, ioconfig2infile.

Just be careful and plan well and you should be ok! Might even be worth detailing it in this post first before you rebuild the ioconfig.

Regards,

James.

[David_246]

Thanks James !

I have done this multiple times before on Sun, just didn't know how to do it on HP, but many thanks for your help !!

Regs David