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Member "am-utils-6.1.5/fixmount/fixmount.8" (2 Jan 2006, 5934 Bytes) of archive /linux/misc/am-utils-6.1.5.tar.gz:
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fixmount - fix remote mount
fixmount [ -adervq ] [ -h name ] host ...
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.
- 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.
mtab(5), rmtab(5), mountd(8C).
- List of current mounts.
- Backup file for remote mount entries on NFS server.
‘‘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 RPC calls.
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.
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