The system accepts the unmount command for a shared file system, but the system does not complete the command. The file system might be unmounted on some of the systems in the sysplex and mounted on other systems, but it is mounted on the server (owner) system. Here, the root cause of the problem is a latch deadlock or latch contention on one or more systems in the sysplex. This procedure describes how to detect this condition; to fix the condition, you will need to restart any system involved in the error.