bin/cpdup/scripts/do_remote_host

   1 #!/bin/csh
   2 #
   3 # $DragonFly: src/bin/cpdup/scripts/do_remote_host,v 1.2 2006/09/21 00:18:13 dillon Exp $
   4
   5 source params
   6
   7 if ( "$argv" == "" ) then
   8     echo "Specify host mounted in $backup_nfs (e.g. 'apollo'), and level."
   9     echo "Level 0 - full backup, do not use hardlink trick"
  10     echo "Level 1 - full backup, use hardlink trick but verify each file"
  11     echo "Level 2 - full backup, use hardlink trick and stat shortcut"
  12     echo "./do_remote_host <host> <level> > $remote_path/mirrors/<host>.log"
  13     exit 1
  14 endif
  15
  16 set host = "$argv[1]"
  17 set level = "$argv[2]"
  18
  19 if ( ! -d $backup_nfs/$host ) then
  20     echo "Host not found in $backup_nfs"
  21     exit 1
  22 endif
  23 if ( ! -d $backup_path/mirrors/$host ) then
  24     echo "No backup found for $host"
  25     exit 1
  26 endif
  27
  28 # Figure out the source directory
  29 #
  30 set source = `readlink $backup_path/mirrors/$host`
  31 if ( "$source" == "" ) then
  32     echo "No backup found for $host at $backup_path/mirrors/$host"
  33     echo "or it was not a softlink"
  34     exit 1
  35 endif
  36
  37 # Figure out the hardlink optimized side directory on
  38 # the target.
  39 #
  40
  41 if ( $level != 0 ) then
  42     set hlbase = `ssh $remote_host -n "readlink ${remote_path}/mirrors/$host"`
  43     if ( "$hlbase" == "" ) then
  44         echo "Missing softlink at ${remote_host}:${remote_path}/mirrors/${host}"
  45         echo "cannot proceed.  Perhaps you did not run a level 0 with"
  46         echo "the do_remote script to create the hardlink base and softlink?"
  47         exit 1
  48     endif
  49
  50     if ( "$hlbase" == "$source" ) then
  51         echo "SUCCEEDED - NO NEW BACKUP SINCE LAST TIME"
  52         exit 0
  53     endif
  54 endif
  55
  56 # Figure out the target path and add prefixes
  57 #
  58 set basename = $source
  59 set target = ${remote_host}:${remote_path}/mirrors/${source}
  60 set source = $backup_path/mirrors/${source}
  61 set hlbase = ${remote_path}/mirrors/${hlbase}
  62
  63 echo "---------- OFFSITE BACKUP OF $source ---------"
  64 echo "SOURCE $source"
  65 echo "HLBASE $hlbase"
  66 echo "TARGET $target"
  67
  68 # Do the actual backup
  69 #
  70
  71 set failed = 0
  72
  73 switch($level)
  74 case 0:
  75     echo "cpdup -i0 -s0 -I $source $target"
  76     cpdup -i0 -s0 -I $source $target
  77     if ( $status != 0 ) then
  78         set failed = 1
  79     endif
  80     breaksw
  81 case 1:
  82     echo "cpdup -f -i0 -s0 -I -H $hlbase $source $target"
  83     cpdup -f -i0 -s0 -I -H $hlbase $source $target
  84     if ( $status != 0 ) then
  85         set failed = 1
  86     endif
  87     breaksw
  88 case 2:
  89     echo "cpdup -i0 -s0 -I -H $hlbase $source $target"
  90     cpdup -i0 -s0 -I -H $hlbase $source $target
  91     if ( $status != 0 ) then
  92         set failed = 1
  93     endif
  94     breaksw
  95 default:
  96     echo "UNKNOWN BACKUP LEVEL, USE ONLY 0-2"
  97     set failed = 1
  98     breaksw
  99 endsw
 100
 101 if ( $failed == 0 ) then
 102     ssh $remote_host -n "rm -f ${remote_path}/mirrors/$host; ln -s $basename ${remote_path}/mirrors/$host"
 103     sync
 104     echo "SUCCEEDED"
 105     exit 0
 106 else
 107     sync
 108     echo "FAILED"
 109     exit 1
 110 endif
 111