The following sections offer solutions for problems that can occur during a migration instalation.
If you receive errors indicating the boot logical volume is not large enough, see Acting on System and Error Messages.
At the beginning of a migration installation, the system verifies that there will be enough space to attempt the migration. If there is not enough disk space, a message is printed explaining how much is needed. You must now reboot the machine from the media containing your current version of AIX, and make more space available in the rootvg volume group. After you do this, attempt the migration again.
You can use the following options for adding additional disk space for the migration installation:
After you use the cplv command, you must remove the original logical volumes with the rmlv command. If the moved logical volume contains a file system, you must modify its corresponding entries in the/etc/filesystems file to reflect the new logical volume name.
For more detailed information about manipulating logical volumes and volume groups, refer to Logical Volumes in AIX 5L Version 5.1 System Management Guide: Operating System and Devices.
The hd7 (system dump) logical volume is no longer needed in AIX Version 4 because the paging space logical volume (hd6) is used. The migration code automatically removes this logical volume if space is needed, but you can remove it ahead of time with the following commands:
sysdumpdev -P -p /dev/hd6 rmlv -f hd7
If you do a preservation installation, you must reinstall any applications that were installed in your rootvg after the preservation installation has completed. You must also reconfigure devices, as well as re-create users and groups. See Chapter 1, Installing the Base Operating System for more information on a preservation installation.
After you have released enough space, reboot from your installation media, and try the migration installation again. You must have at least 8MB of free disk space to complete the migration installation.
If there is insufficient space to complete the migration installation during the BOS installation process, a message similar to the following is displayed at the end of the installation:
An error occurred while migrating packages. Some packages have not been installed. Please see /var/adm/ras/devinst.log for details or perform an overwrite or preservation install.
If space limitations prevent the migration of all software that is usually automatically migrated, the installation program attempts to install the software that is usually installed for a Preservation or Overwrite installation. If there is still not enough disk space available, the minimum set of software required to support the use of the system is installed.
If there is not enough space to migrate all of the usually migrated software, a collection of software called a Migration Bundle will be available when you install additional software later. If the minimum set of software is installed, or if the installation is not performed from a graphics console, a Graphics_Startup Bundle is created. Before installing either of these bundles, create additional disk space on the machine you want to install. Refer to Chapter 4, Optional Software Products and Service Updates for more information about installing software bundles and migrating or installing optional software products. Maintaining Optional Software Products and Service Updates describes how to remove software from the system to release disk space.
If you migrate a system from AIX 3.2 to AIX 4.3, you may have to rename some of the devices. The AIX Version 4 database must be built from scratch when the system is rebooted because the device configuration database in AIX Version 3 is not compatible with AIX Version 4 database. In this case, the devices are named as they are found, and there may be some cases where these names do not match the names in AIX Version 3.