NAME¶
fixmount - fix remote mount entries
SYNOPSIS¶
fixmount [
-adervq ] [
-h name ]
host ...
DESCRIPTION¶
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 turn.
OPTIONS¶
- -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 mounted locally.
- -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.
- -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.
FILES¶
- /etc/mtab
- List of current mounts.
- /etc/rmtab
- Backup file for remote mount entries on NFS server.
SEE ALSO¶
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).
http://www.am-utils.org
Amd - The 4.4 BSD Automounter
BUGS¶
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.
AUTHORS¶
Andreas Stolcke <stolcke@icsi.berkeley.edu>.
Erez Zadok <ezk@cs.sunysb.edu>, 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.