How to do a safe "in place" migration

From CoolSolutionsWiki

This migration assumes you have Direct Attached Storage with an NSS installed file system, and that you want to change the OS from NetWare to Linux. This is something you might want to do if you want to re-use a drive instead of replacing it.

The safe "in place" migration scenario also assumes you can either place another drive in your current box or that you can move your NSS drives to a new box. Here's a process for planning and carrying out the migration:

  • Step One: Install OES 2 Linux with NSS on a new drive
This scenario assumes that you have a fairly new system and just want to adapt it to Linux OES 2. Add a new drive to the system, and install OES 2 Linux with NSS on that system. Then change this to be the boot drive.
  • Step Two: Reboot
OES 2 Linux picks up the NSS drives and mounts them on /media/nss/<vol_name>. You can check to see if this worked by logging in as root and then running the following command: 
 ls /media/nss
You'll see all the NSS volumes listed under that directory. The list should have the same volumes you had with NetWare.
  • Notes of Interest

This is called a safe "in place" migration because if something goes wrong you can always change back to the NetWare server by resetting the boot drive.

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