[ale] Rebooting remotely without a usable /

[mrideout at windserve.com (Matt Rideout)]

I have a server that's having issues with its / which prevent shutdown, 
reboot, init, etc from being accessible. This could be a hardware or 
firmware issue, so I'd like to reboot, and diagnose it remotely so that 
I'll know whether to order any hardware before going on-site.

I can SSH in, and have an IP KVM hooked up, but have no remote power 
management. The SysRq trick isn't working through the KVM. It seems like 
there should be a way to reboot through /proc, but I'm drawing a blank. 
Any ideas?