rmtab contains a table of filesystems that are remotely mounted by NFS clients. This file is maintained by mountd(1M) , the mount daemon. The data in this file should be obtained only from mountd(1M) using the MOUNTPROC_DUMP remote procedure call.
The file contains a line of information for each remotely mounted filesystem. There are a number of lines of the form:
The mount daemon adds an entry for any client that successfully executes a mount request and deletes the appropriate entries for an unmount request.
Lines beginning with a hash (’ #’) are commented out. These lines are removed from the file by mountd(1M) when it first starts up. Stale entries may accumulate for clients that crash without sending an unmount request.