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Member "am-utils-6.1.5/amq/amq.8" of archive am-utils-6.1.5.tar.gz:
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amq - automounter query tool
amq [ -fmpsvwHTU ] [ -h hostname ] [ -l log_file ] [ -x log_options
] [ -D debug_options ] [ -P program_number ] [[ -u ] directory ... ]
Amq
provides a simple way of determining the current state of amd program. Communication
is by RPC.
Three modes of operation are supported by the current protocol.
By default a list of mount points and auto-mounted filesystems is output.
An alternative host can be specified using the -h option.
If directory names
are given, as output by default, then per-filesystem information is displayed.
- -f
- Ask the automounter to flush the internal caches and reload all
the maps.
- -h hostname
- Specify an alternate host to query. By default the
local host is used. In an HP-UX
cluster, the root server is queried by default,
since that is the system on which the automounter is normally run.
- -l log_file
- Tell amd to use log_file as the log file name. For security reasons, this
must be the same log file which amd used when started. This option is therefore
only useful to refresh amd’s open file handle on the log file, so that it
can be rotated and compressed via daily cron jobs.
- -m
- Ask the automounter
to provide a list of mounted filesystems, including the number of references
to each filesystem and any error which occurred while mounting.
- -p
- Return
the process ID of the remote or locally running amd. Useful when you need
to send a signal to the local amd process, and would rather not have to
search through the process table. This option is used in the ctl-amd script.
- -s
- Ask the automounter to provide system-wide mount statistics.
- -u
- Ask the
automounter to unmount the filesystems named in directory instead of providing
information about them. Unmounts are requested, not forced. They merely
cause the mounted filesystem to timeout, which will be picked up by amd’s
main scheduler thus causing the normal timeout action to be taken.
- -v
- Ask
the automounter for its version information. This is a subset of the information
output by amd’s -v option.
- -w
- Translate a full pathname as returned by getpwd(3)
into a short Amd pathname that goes through its mount points. This option
requires that Amd is running.
- -x log_options
- Ask the automounter to use
the logging options specified in log_options from now on.
- -D log_options
- Ask the automounter to use the debugging options specified in debug_options
from now on.
- -H
- Display short usage message.
- -P program_number
- Contact an
alternate running amd that had registered itself on a different RPC program_number
and apply all other operations to that instance of the automounter. This
is useful when you run multiple copies of amd, and need to manage each
one separately. If not specified, amq will use the default program number
for amd, 300019. For security reasons, the only alternate program numbers
amd can use range from 300019 to 300029, inclusive.
- -T
- Contact amd using
the TCP transport only. Normally amq will try TCP, and if that failed,
will try UDP.
- -U
- Contact amd using UDP (connectionless) transport only.
Normally amq will try TCP, and if that failed, will try UDP.
- amq.x
- RPC
protocol description.
Amq uses a Sun registered RPC
program
number (300019 decimal) which may not be in the /etc/rpc database.
If the
TCP wrappers library is available, and the use_tcpwrappers global amd.conf
option is set to ‘‘yes’’, then amd will verify that the host running amq is
authorized to connect. The amd service name must used in the /etc/hosts.allow
and /etc/hosts.deny files. For example, to allow only localhost to connect
to amd, add this line to /etc/hosts.allow:
amd: localhost
and this line
to /etc/hosts.deny:
amd: ALL
amd(8), ctl-amd(8), amd.conf(5), hosts_access(5).
‘‘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
Jan-Simon Pendry <jsp@doc.ic.ac.uk>, Department of Computing,
Imperial College, London, UK.
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.
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