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(8C) daemons. The actions specified by the
options are performed for each host in turn.
-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
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
Andreas Stolcke <email@example.com>.
Erez Zadok <firstname.lastname@example.org>, 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 am-utils.
26 Feb 1993