fixmount - fix remote mount entries
] [ -h name
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
- -a -d -e
- These options work as in showmount(8) except that
only entries pertaining to the local host are printed.
- 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.
- 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.
- 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 mounted locally.
- 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.
- -h name
- 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.
- List of current mounts.
- Backup file for remote mount entries on NFS server.
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
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
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,
is actually /usr/share
the local mount point is /usr/share
as well this will be handled
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
distributed with am-utils.