Btrfs Seems To Finally Have Failed Me On A Production System

In the Phoronix server room for our Linux hardware testing and the LinuxBenchmarking.com daily performance tracker there are 16 of the 56 systems running Btrfs as their root file-system. While those systems have been chugging along for months and many of them running the latest daily Git kernel, I've finally had one of the systems run into some apparent Btrfs file-system issues...