After an incomplete update from the factory repo my opensuse 12.1 btrfs filesystem is unusable. I have plenty of disk space free but zero inodes. When I try to delete or create a file it gives me the error no space available? How can I fix this?
Here is how I solved it: http://www.nrtm.de/index.php/2012/03/13/the-joys-of-btrfs-and-opensuse-or-no-space-left-on-device/