[beavers]

I have three machines running -current, and I apply new snapshots fairly recently. Two of them run through the upgrade process without a hitch. On the third machine, the disk fills up every time!

I boot bsd.rd, hit "upgrade", select sd0 as the root disk, etc etc. As soon as it starts extracting sets, /dev/rd0a fills up. It's like the upgrader is extracting them to the ramdisk, rather than sd0. What could cause this?