[aur-general] systemd 207 and btrfs

I upgraded to systemd 207 today, and upon reboot received several messages that say, "failed to open /dev/btrfs-control skipping device registration: No such file or directory." The btrfs problem faq suggests that running "mknod /dev/btrfs-control c 10 234" should fix me up. However, when I run this it says that it already exists. The only significant changes that I made were to upgrade systemd, and add the systemd hook to mkinicpio.conf. I tried booting from external media, and removing the systemd hook, but after re-running mkinitcpio I still get the same result. Does anyone have any suggestions for getting past this? I will happily provide more information if you can tell me what would be helpful. Thanks, =-Jameson