doc/man-pages/pod8/volinfo.pod

   1 =head1 NAME
   2
   3 volinfo - Produces detailed statistics about AFS volume headers
   4
   5 =head1 SYNOPSIS
   6
   7 =for html
   8 <div class="synopsis">
   9
  10 B<volinfo> [B<-checkout>] [B<-vnode>] [B<-date>] [B<-inode>] [B<-itime>]
  11     S<<< [B<-part> <I<AFS partition name (default current partition)>>+] >>>
  12     S<<< [B<-volumeid> <I<volume id>>+] >>> [B<-header>] [B<-sizeonly>]
  13     [B<-fixheader>] [B<-saveinodes>] [B<-orphaned>] [B<-filenames>] [B<-help>]
  14
  15 =for html
  16 </div>
  17
  18 =head1 DESCRIPTION
  19
  20 The B<volinfo> command displays detailed statistics about one or more
  21 volume headers and the partition that houses them. The command must be
  22 issued on a file server machine and by default produces output for every
  23 volume on every AFS server partition on the machine. To display output for
  24 the volumes on one partition only, include the B<-part> argument. To
  25 display output for one volume only, include the B<-volumeid> argument.
  26
  27 =head1 OPTIONS
  28
  29 =over 4
  30
  31 =item B<-checkout>
  32
  33 Checkout the specified volume from the running fileserver. This ensures that
  34 the fileserver or other processes will not be modifying volume metadata at the
  35 same time we are trying to read it, leading to invalid or incorrect results.
  36
  37 =item B<-vnode>
  38
  39 Displays a table for each volume which lists the large (directory) and
  40 small (file) vnodes in it, in addition to the default output.
  41
  42 =item B<-date>
  43
  44 When combined with the B<-vnode> flag, adds the C<ServerModTime> field to
  45 each vnode entry in the large vnode and small vnode tables, reporting its
  46 most recent modification time.
  47
  48 =item B<-inode>
  49
  50 When combined with the B<-vnode> flag, adds the C<inode> field to each
  51 vnode entry in the large vnode and small vnode tables, reporting the
  52 associated inode number.
  53
  54 =item B<-itime>
  55
  56 When combined with the B<-vnode> flag, displays a change, modification,
  57 and access timestamp for each of the large vnode and small vnode tables.
  58
  59 =item B<-part> <I<partition name or id>>+
  60
  61 Specifies the partition that houses each volume for which to produce
  62 output. Use the format F</vicepI<xx>> or I<xx>, where I<xx> is one or two lowercase
  63 letters. This argument can be omitted if the current working directory is
  64 the mount location for an AFS server partition. If it is not the mount
  65 location for an AFS server partition, the command produces output for
  66 every volume on all local AFS server partitions.
  67
  68 =item B<-volumeid> <I<volume id>>+
  69
  70 Specifies the ID number of one volume for which to produce output.  The
  71 B<-part> argument must be provided along with this one unless the current
  72 working directory is the mount location for the AFS server partition that
  73 houses the volume.
  74
  75 =item B<-header>
  76
  77 Displays statistics about the volume header of each volume, in addition to
  78 the default output.
  79
  80 =item B<-sizeonly>
  81
  82 Displays a single line of output for each volume, reporting the size of
  83 various structures associated with it. The default output is suppressed
  84 and any flags that modify it (such as B<-vnode>) are ignored.
  85
  86 =item B<-fixheader>
  87
  88 Repairs damaged inodes in each volume if possible. If there are any, it
  89 reports the action it is taking to repair them. Otherwise, it produces no
  90 output in addition to the default output.
  91
  92 =item B<-saveinodes>
  93
  94 Creates a file in the current working directory for each inode in each
  95 volume. Each file is called F<TmpInode.I<vnode_number>> and contains the
  96 inode's contents. The default output is suppressed and any flags that
  97 modify it (such as B<-vnode>) are ignored.
  98
  99 =item B<-orphaned>
 100
 101 Displays a large vnode and small vnode table for each volume, which lists
 102 only orphaned vnodes (vnodes that have no parent). If there are none, the
 103 tables are empty (only the headers appear).
 104
 105 =item B<-filenames>
 106
 107 When combined with the B<-vnode> flag, adds the full path and file name of the
 108 C<namei> file which stores the vnode data to each vnode entry in the large vnode
 109 and small vnode tables. This option is only available on fileservers which use
 110 the C<namei> storage format for storing data.
 111
 112 =item B<-help>
 113
 114 Prints the online help for this command. All other valid options are
 115 ignored.
 116
 117 =back
 118
 119 =head1 OUTPUT
 120
 121 By default, the command produces several line of statistics for each
 122 volume. Adding other options produces or substitutes additional
 123 information as described in L</OPTIONS>.  The output is intended for
 124 debugging purposes and is meaningful to someone familiar with the internal
 125 structure of volume headers.
 126
 127 =head1 PRIVILEGE REQUIRED
 128
 129 The issuer must be logged in as the local superuser C<root>.
 130
 131 =head1 SEE ALSO
 132
 133 L<volscan(8)>,
 134 L<vldb.DB0(5)>,
 135 L<volserver(8)>
 136
 137 =head1 COPYRIGHT
 138
 139 IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
 140
 141 This documentation is covered by the IBM Public License Version 1.0.  It was
 142 converted from HTML to POD by software written by Chas Williams and Russ
 143 Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.