AIX Version 4.3 Differences Guide

6.8.4 Alternate Disk Installation Enhancements (4.3.2)
In this section, the enhancements made at the AIX 4.3.2 introduction are given.
6.8.4.1 New alt_disk_install 4.3.2 Usage
Listed below are the new command formats for the various tasks given.
Create Alternate Disk: mksysb (-d) or clone (-C):
alt_disk_install {-d | -C} [-i ] [-s ]
[-R ] [-D] [-B] [-V] [-r]
[-p ] [-L ]
[-b ] [-I ]
[-l ] [-f ]
[-F ] [-e ] [-w ]
[-n] [-P ]
Determine Volume Group Boot Disk (-q):
alt_disk_install -q
Rename Alternate Disk Volume Group (-v):
alt_disk_install -v
Wake-up Volume Group (-W):
alt_disk_install -W
Put-to-sleep Volume Group (-S):
alt_disk_install -S
Clean Up Alternate Disk Volume Group (-X):
alt_disk_install -X []
6.8.4.2 Scenarios for Command Enhancements
To see which disks belong to the original rootvg volume group after the system
has been rebooted from the alternate disk, an entry has been added to the
database, so that when the system is rebooted from the alternate disk, and the
lspv command is executed, a volume group name old_rootvg will be listed for the
original rootvg disks.
# lspv
hdisk0 00006091aef8b687 old_rootvg
hdisk1 00076443210a72ea rootvg
This volume group will be set to NOT varyon at reboot, and should ONLY be
removed with:
# alt_disk_install -X old_rootvg
# lspv
hdisk0 00006091aef8b687 None
hdisk1 00076443210a72ea rootvg
New function was added to the -X flag to allow for specified volume group name
information removal. It is recommended that you always use alt_disk_install -X
when removing any information about an alternate volume group (altinst_rootvg,
old_rootvg, and so on). alt_disk_install manages changes to the ODM that are
required. Using exportvg or reducevg could cause serious problems to your system
(like removing base entries in /etc/filesystems). alt_disk_install -X and
alt_disk_install -X will not remove actual data from the
126 AIX Version 4.3 Differences Guide