Storix Software SBAdmin AIX System Recovery Guide - Manual (Page 42)

After you have selected a physical volume, you will receive a final confirmation. After selecting “y” to
continue, the following will be performed:
1. The rootvg volume group will be imported from the selected physical volume.
2. The rootvg volume group is varied on.
3. The root (/) and /usr filesystems are checked and repaired if necessary.
4. The /etc/filesystems file in the root filesystem is checked to ensure it contains the necessary entries for
the base operating system filesystems. If not, the file is moved and replaced with a file containing the
necessary entries required for the system to boot properly
5. The root (/) and /usr filesystems are mounted over the RAM filesystem (temporary operating system
used for booting the system into installation mode)
6. The boot logical volume is rebuilt using the bosboot command.
7. The device list is set to the specified disk for booting in normal mode.
These steps will repair most problems that prevent a system from booting properly. In case there are more
repairs that an experienced user may want to make, you will be prompted if you want to reboot the system
now or enter a maintenance shell. If you select to enter the maintenance shell, you may type any
commands to query or further repair the system. Note that only the base operating system filesystems,
including /, /usr, /tmp and /var will be mounted at this time, and only the rootvg volume group will be varied
on.
Reinstall Base Operating System Only
Referred to as a “Recovery Install”, this option will restore only the base operating system files from the
backup. It may also be used to automatically reduce the amount of space used by the root (/) and /usr
filesystem by recreating those filesystems at the minimum size required to hold the backup data. This is
very handy if, for instance, the root filesystem is inadvertently increased in size unnecessarily, or if the
program products are removed, thus providing free space in /usr that is needed elsewhere.
This process is not intended for updating the operating system on the client. It is
possible to restore the operating system data from a backup originating on another
machine, but the restored operating system data (only root and /usr filesystems) may
not be compatible with other data on the system. For instance, the /usr filesystem
may indicate that a certain product is installed. But, since the product was installed
in a different filesystem and does not actually exist on the new system, the product
database is now inconsistent. Also, if the operating system was at a different
software level than the system it is being restored to, some configuration contained
in the /var filesystem, such as printer definitions, may not be compatible with the
restored operating system.
Before selecting this option, you must have first selected the network install server, if any, and the
installation device or file from which to restore the operating system data. If you have not, you will be
returned to the
Installation and Maintenance Menu .
When selecting this option, you are provided a list of physical volumes which contain a root (/) filesystem .
The rootvg volume will be imported from the physical volume you select from the list. Some systems may
have more than one rootvg volume group, and therefore more than one root filesystem, and therefore may
have multiple disks to select from.
After you have selected a physical volume, you will receive a final confirmation that you wish to proceed
with the recovery. After selecting “y” to continue, the following will be performed:
a. The rootvg volume group will be imported from the selected physical volume.
Storix System Backup Administrator 42 Version 8.2 AIX System Recovery Guide