AIX

LED 552, 554, and 556 - Super block corrupted and corrupted customized ODM
database
1. Repeat steps 1 through 2 for LEDs 551, 555, and 557.
2. If fsck indicates that block 8 is corrupted, the super block for the file system is
corrupted and needs to be repaired. Enter the command:
dd count=1 bs=4k skip=31 seek=1 if=/dev/hdn of=/dev/hdn
where n is the number of the file system.
3. Rebuild your JFS log by using the command:
/usr/sbin/logform /dev/hd8
4. If this solves the problem, stop here; otherwise, continue with step 5.
5. Your ODM database is corrupted. Restart your system and follow the procedure
given in 4.4.2, “Accessing a system that will not boot” on page 105 to access rootvg
with choice 2 on the Volume Group Information screen.
6. Mount the root and usr file systems as follows:
mount /dev/hd4 /mnt
mount /usr
7. Copy the system configuration to a back up directory:
mkdir /mnt/etc/objrepos/backup
cp /mnt/etc/objrepos/Cu* /mnt/etc/objrepos/backup
8. Copy the configuration from the RAM file system as follows:
cp /etc/objrepos/Cu* /mnt/etc/objrepos
9. Unmount all file systems by using the umount all command.
10. Determine the boot disk by using the lslv -m hd5 command.
11. Save the clean ODM to the boot logical volume by using the command:
savebase -d/dev/hdiskn
where n is the disk number of the disk containing boot logical volume.
12. Reboot, if the system does not come up, and reinstall BOS.