Move /var to its own (logical) partition in LVM

(all this using Oracle EL 5, aka RHEL 5...)

From memory, so there may be errors:

1. Boot off of the installation cd using "linux rescue"
2. Unmount all of the drives in /mnt/syslinux
• Note: Before unmounting /mnt/syslinux itself, you must unmount all of the mountpoints within it.
3. $ resize2fs /dev/VolGroup00/ 5G
4. ... boot back into regular linux ...
5. $ lvreduce -L 6GB /dev/VolGroup00 (answer yes)
6. $ lvcreate -L 10G -n var VolGroup00
7. ... boot back into rescue mode ...
8. mkdir /mnt/var
9. mkfs -t ext3 /dev/VolGroup00/var
10. mount -t ext3 /dev/VolGroup00/var/ /mnt/var
11. mv /mnt/syslinux/var* /mnt/var
12. (edit fstab so that it mounts the new logical volume to /var)
13. resize2fs /dev/VolGroup00/LogVol00 (remember how I made this 5Gb when the LV was 6GB?)
14. reboot!

On rebooting, syslogd had a problem starting. (Running in debug mode, it would complain of "permission denied" to /var/log/secure and all other log files).  It was an SELinux problem and was remedied by relabeling the filesystem.