Buy a bigger hard drive?
Im not familiar with Linux parition resizing "yet" but i would use a partition resizer to increase your tmp partition then rerun it.
When you go buy a bigger hard drive backup that drive as a image and reinstall the image to retain all files / settings / boot up strings etc.
I always use large hard drives. Even in older boxes.
I just updated to 2.19 as well on a OLD Dell optiplex gx110 that i only use for nameserving but it has a 500 gb hard drive.
Not any error and the install was flawless. Using CentOS 5.1