RMTAB

Section: File Formats (5)
Updated: 1 February 1985
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NAME

rmtab - local file system mount statistics

DESCRIPTION

Rmtab resides in directory /etc and contains a record of all clients that have done remote mounts of file systems from this machine. Whenever a remote mount is done, an entry is made in the rmtab file of the machine serving up that file system. Umount removes entries, if of a remotely mounted file system. Umount -a broadcasts to all servers, and informs them that they should remove all entries from rmtab created by the sender of the broadcast message. By placing a umount -a command in /etc/rc.boot, rmtab tables can be purged of entries made by a crashed host, which upon rebooting did not remount the same file systems it had before. The table is a series of lines of the form

: hostname:directory

This table is used only to preserve information between crashes, and is read only by mountd(8) when it starts up. Mountd keeps an in-core table, which it uses to handle requests from programs like showmount(1) and shutdown(8).

FILES

/etc/rmtab

BUGS

Although the rmtab table is close to the truth, it is not always 100% accurate.