Adding a disk when upgrading to 11.00

[Ryan_4]

I have a 10.20 server and I want to upgrade from 10.20 to 11.00. I want my root disk to be changed from 2gb to 4gb to make room for the additional need for the OS and swap. How would I swap out the 2gb disk and replace it with a 4gb disk without wiing out my system configurations?

[A. Clay Stephenson]

The easist thing to do is put the 4GB disk in at a different SCSI ID (e.g. 5) and leave your original at 6 (or whatever). You can then alter the alternate boot path to be the 10.20 disk and the primary boot path to be the 11x disk. You can then easily boot eith OS. You will also them be able to activate the old VG (after doing a vgimport) and mount the old filesystems. This can aid in rapid setup of the new system.

[Sridhar Bhaskarla · Accepted solution]

Hi,

With your question, it is understood that you want to follow an upgrade process instead of cold-installing the 11.0 OS.

Please bear in mind that though it can be done, a cold-install is a clean way of upgrading 10.20 to 11.00 than upgrading using swgettools.

You will need to create a mak_tape_recovery tape on 10.20 system, shutdown the system, replace 2GB drive with 4GB drive and reinstall 10.20 using the make_tape_recovery tape onto the 4GB drive. Once it is done, then you can upgrade 10.20 to 11.00.

But if you are cold-installing 11.0, then it is straight-forward. Just replace 2GB disk with 4GB disk and install 11.0 on it. 2GB disk will help you for the backout if needed.

-Sri

[Michael Tully]

One thing you should look at is actually doing a fresh installation. It is a known fact that the success of upgrading from 10.20 to 11.00 is littered with problems if successful at all. Do a search in the forums for 10.20 to 11.00 upgrade. There will be plenty of postings on this subject.
I would suggest that you do a fresh install on a new disk if you have the available space.

Your could do this:

Create an ignite tape (2)
copy the entire contents of /etc to a second tape. Do a 'vgexport -m myvg.mapfile -p -v /dev/myvg for all other voluem groups.
Install the new disk
Install the new OS, patch etc.
Get your vg mapfiles and import your other volume groups.