fixmount - fix remote mount entries
fixmount [ -adervq ] [ -h name ] host ...
fixmount is a variant of showmount(8) that can delete bogus mount entries in remote
mountd(8) daemons. The actions specified by the options are performed for each host in
-a -d -e
These options work as in showmount(8) except that only entries pertaining to the
local host are printed.
-r Removes those remote mount entries on host that do not correspond to current
mounts, i.e., which are left-over from a crash or are the result of improper mount
protocol. The actuality of mounts is verified using the entries in /etc/mtab.
-v Verify remote mounts. Similar to -r except that only a notification message is
printed for each bogus entry found. The remote mount table is not changed.
-A Issues a command to the remote mountd declaring that ALL of its filesystems have
been unmounted. This should be used with caution, as it removes all remote mount
entries pertaining to the local system, whether or not any filesystems are still
-q Be quiet. Suppresses error messages due to timeouts and "Program not registered",
i.e., due to remote hosts not supporting RPC or not running mountd.
Pretend the local hostname is name. This is useful after the local hostname has
been changed and rmtab entries using the old name remain on a remote machine.
Unfortunately, most mountd's won't be able to successfully handle removal of such
entries, so this option is useful in combination with -v only.
This option also saves time as comparisons of remotely recorded and local hostnames
by address are avoided.
/etc/mtab List of current mounts.
/etc/rmtab Backup file for remote mount entries on NFS server.
showmount(8), mtab(5), rmtab(5), mountd(8C).
``am-utils'' info(1) entry.
Linux NFS and Automounter Administration by Erez Zadok, ISBN 0-7821-2739-8, (Sybex, 2001).
Amd - The 4.4 BSD Automounter
No attempt is made to verify the information in /etc/mtab itself.
Since swap file mounts are not recorded in /etc/mtab, a heuristic specific to SunOS is
used to determine whether such a mount is actual (replacing the string "swap" with "root"
and verifying the resulting path).
Symbolic links on the server will cause the path in the remote entry to differ from the
one in /etc/mtab. To catch those cases, a filesystem is also deemed mounted if its local
mount point is identical to the remote entry. I.e., on a SunOS diskless client,
server:/export/share/sunos.4.1.1 is actually /usr/share. Since the local mount point is
/usr/share as well this will be handled correctly.
There is no way to clear a stale entry in a remote mountd after the local hostname (or
whatever reverse name resolution returns for it) has been changed. To take care of these
cases, the remote /etc/rmtab file has to be edited and mountd restarted.
The RPC timeouts for mountd calls can only be changed by recompiling. The defaults are 2
seconds for client handle creation and 5 seconds for RPC calls.
Andreas Stolcke <firstname.lastname@example.org>.
Erez Zadok <email@example.com>, Computer Science Department, Stony Brook University, Stony
Brook, New York, USA.
Other authors and contributors to am-utils are listed in the AUTHORS file distributed with
26 Feb 1993 FIXMOUNT(8)