No Hard Reset
Only giving your computer a soft reset is a sign of too much balls on the part of Apple. Dear Apple, you are not perfect, your software will crash. Give me an easy way to recover. When your keyboard and mouse stop responding, and the screen just stays frozen that is the first sign. When you go to another computer and try to ping your computer and it has stopped responding that is the second. When you go back into your room and all 7 low rpm fans are running at high rpm in your computer you know it is time for drastic measures. So you hold down the power button to engage a reset. Unfortunately it is only a soft reset button. There is no hard reset button on a G5. I had to resort to the human prerogative when dealing with machines: pull the plug.
Fortunately journaling filesystems are already part of os x, I don’t need to wait for zfs to not lose a disc in the process. Also to my mac’s credit, it had been running non-stop since at least Christmas and possibly longer. More than I can say for my poor twice this month BSOD PC. (On the other hand, I can just restart that without yanking the battery.)