amq(8) - f29

1AMQ(8)                      System Manager's Manual                     AMQ(8)
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NAME

6       amq - automounter query tool
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SYNOPSIS

9       amq [ -fimpqsvwHTU ] [ -h hostname ] [ -l log_file ] [ -x log_options ]
10       [ -D debug_options ] [ -P program_number ] [[ -u ] directory ...  ]
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DESCRIPTION

13       Amq provides a simple way of determining the current state of amd  pro‐
14       gram.  Communication is by RPC.  Three modes of operation are supported
15       by the current protocol.  By default a list of mount points  and  auto-
16       mounted  filesystems  is  output.  An alternative host can be specified
17       using the -h option.
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19       If directory names are given, as output by default, then per-filesystem
20       information is displayed.
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OPTIONS

23       -f     Ask  the automounter to flush the internal caches and reload all
24              the maps.
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27       -h hostname
28              Specify an alternate host to query.  By default the  local  host
29              is  used.   In  an  HP-UX cluster, the root server is queried by
30              default, since that is the system on which  the  automounter  is
31              normally run.
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34       -i     Print information about the mount maps.
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37       -l log_file
38              Tell  amd  to  use  log_file as the log file name.  For security
39              reasons, this must be the same log  file  which  amd  used  when
40              started.   This option is therefore only useful to refresh amd's
41              open file handle on the log file, so that it can be rotated  and
42              compressed via daily cron jobs.
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45       -m     Ask  the  automounter  to provide a list of mounted filesystems,
46              including the number of references to each  filesystem  and  any
47              error which occurred while mounting.
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50       -p     Return  the  process  ID  of  the remote or locally running amd.
51              Useful when you need to send a signal to the local amd  process,
52              and  would  rather not have to search through the process table.
53              This option is used in the ctl-amd script.
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56       -q     Suppress error messages  produced  when  attempting  synchronous
57              unmounts with the -u option.
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60       -s     Ask the automounter to provide system-wide mount statistics.
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63       -u     Ask  the  automounter to unmount the filesystems named in direc‐
64              tory instead of providing information about them.  Unmounts  are
65              requested, not forced.  They merely cause the mounted filesystem
66              to timeout, which will be picked up by amd's main scheduler thus
67              causing the normal timeout action to be taken.  If the -u option
68              is repeated, amq will attempt to unmount the  file  system  syn‐
69              chronously  by  waiting  until  the  timeout action is taken and
70              returning an error if the unmount  fails.   Any  error  messages
71              produced may be suppressed with the -q option.
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74       -v     Ask the automounter for its version information.  This is a sub‐
75              set of the information output by amd's -v option.
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78       -w     Translate a full pathname as returned by getcwd(3) into a  short
79              Amd  pathname  that goes through its mount points.   This option
80              requires that Amd is running.
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83       -x log_options
84              Ask the automounter to use  the  logging  options  specified  in
85              log_options  from  now  on.   Note  that the "fatal" and "error"
86              options cannot be turned off.
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89       -D debug_options
90              Ask the automounter to use the debugging  options  specified  in
91              debug_options from now on.
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94       -H     Display short usage message.
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97       -P program_number
98              Contact an alternate running amd that had registered itself on a
99              different RPC program_number and apply all other  operations  to
100              that  instance  of the automounter.  This is useful when you run
101              multiple copies of amd, and need to manage each one  separately.
102              If  not  specified,  amq will use the default program number for
103              amd, 300019.  For security reasons, the only  alternate  program
104              numbers amd can use range from 300019 to 300029, inclusive.
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107       -T     Contact amd using the TCP transport only.  Normally amq will try
108              TCP, and if that failed, will try UDP.
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111       -U     Contact amd using UDP (connectionless) transport only.  Normally
112              amq will try TCP, and if that failed, will try UDP.
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FILES

116       amq.x               RPC protocol description.
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CAVEATS

120       Amq uses a Sun registered RPC program number (300019 decimal) which may
121       not be in the /etc/rpc database.
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123       If the TCP wrappers  library  is  available,  and  the  use_tcpwrappers
124       global amd.conf option is set to ``yes'', then amd will verify that the
125       host running amq is authorized to connect.  The amd service  name  must
126       used  in  the /etc/hosts.allow and /etc/hosts.deny files.  For example,
127       to  allow  only  localhost  to  connect  to  amd,  add  this  line   to
128       /etc/hosts.allow:
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130              amd: localhost
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132       and this line to /etc/hosts.deny:
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134              amd: ALL
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AUTHORS

151       Jan-Simon Pendry <jsp@doc.ic.ac.uk>, Department of Computing,  Imperial
152       College, London, UK.
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154       Erez  Zadok  <ezk@cs.sunysb.edu>,  Computer  Science  Department, Stony
155       Brook University, Stony Brook, New York, USA.
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157       Other authors and contributors to am-utils are listed  in  the  AUTHORS
158       file distributed with am-utils.
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162                               15 September 2011                        AMQ(8)