1PMNSDEL(1)                  General Commands Manual                 PMNSDEL(1)
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NAME

6       pmnsdel - delete a subtree of names from the Performance Co-Pilot PMNS
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SYNOPSIS

9       $PCP_BINADM_DIR/pmnsdel [-d] [-n namespace] metricpath [ ... ]
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DESCRIPTION

12       pmnsdel removes subtrees of names from a Performance Metrics Name Space
13       (PMNS), as used by the components of the Performance Co-Pilot (PCP).
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15       Normally pmnsdel operates on the default Performance Metrics  Namespace
16       (PMNS),  however if the -n option is specified an alternative namespace
17       is used from the file namespace.
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19       The default PMNS is found in the file $PCP_VAR_DIR/pmns/root unless the
20       environment  variable  PMNS_DEFAULT  is set, in which case the value is
21       assumed to be the pathname to the file containing the default PMNS.
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23       The metric names to be deleted are all those for which one of the  met‐
24       ricpath arguments is a prefix in the PMNS, see pmns(4).
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26       All of the files defining the PMNS must be located within the directory
27       that contains the root  of  the  PMNS,  and  this  would  typically  be
28       $PCP_VAR_DIR/pmns  for the default PMNS, and this would typically imply
29       running pmnsdel as root.
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31       Provided some initial integrity  checks  are  satisfied,  pmnsdel  will
32       update  the necessary PMNS files.  pmnsdel will then attempt to compile
33       the resultant namespace using pmnscomp(1) - if this fails for any  rea‐
34       son, the original namespace is restored.  Note that any PMNS files that
35       are no longer referenced by the modified namespace will not be removed,
36       even though though their contents are not part of the new namespace.
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38       The -d option allows the resultant PMNS to optionally contain duplicate
39       PMIDs with different names in the PMNS.  By default this  condition  is
40       considered an error.
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CAVEAT

43       Once  the writing of the new namespace file has begun, the signals SIG‐
44       INT, SIGHUP and SIGTERM will be ignored to protect the integrity of the
45       new files.
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FILES

48       $PCP_VAR_DIR/pmns/root   the  default PMNS, when then environment vari‐
49                                able PMNS_DEFAULT is unset
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PCP ENVIRONMENT

52       Environment variables with the prefix PCP_ are used to parameterize the
53       file  and  directory names used by PCP.  On each installation, the file
54       /etc/pcp.conf contains the  local  values  for  these  variables.   The
55       $PCP_CONF  variable may be used to specify an alternative configuration
56       file, as described in pcp.conf(4).
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SEE ALSO

59       pmnsadd(1),  pmnscomp(1),  pmnsmerge(1),  pcp.conf(4),  pcp.env(4)  and
60       pmns(4).
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64Performance Co-Pilot                  SGI                           PMNSDEL(1)
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