handlers/rdiff

   1 #
   2 # rdiff-backup handler script for backupninja
   3 # requires rdiff-backup
   4 #
   5
   6 getconf options
   7 getconf testconnect yes
   8 getconf nicelevel 0
   9
  10 setsection source
  11 getconf type; sourcetype=$type
  12 getconf label
  13 getconf keep 60
  14 getconf include
  15 getconf vsinclude
  16 getconf exclude
  17
  18 ### DESTINATION ###
  19
  20 setsection dest
  21 getconf directory; destdir=$directory
  22 # strip trailing /
  23 destdir=${destdir%/}
  24 getconf type; desttype=$type
  25 getconf user; destuser=$user
  26 getconf host; desthost=$host
  27
  28 # See if vservers are configured
  29 if [ "$vservers" = "yes" ]
  30 then
  31         if [ ! -d $VROOTDIR ]
  32         then
  33                 fatal "vservers enabled, but $VROOTDIR does not exist!"
  34         else
  35                 info "vserver method enabled"
  36                 usevserver=1
  37         fi
  38 fi
  39
  40 [ "$destdir" != "" ] || fatal "Destination directory not set"
  41
  42 if [ "$desttype" == "remote" ]; then
  43         # see if we can login
  44         if [ "$testconnect" == "yes" ]; then
  45                 hostalive=0
  46             debug "ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'"
  47                 ret=`ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n host is alive'`
  48                 if echo $ret | grep "host is alive"; then
  49                         debug "Connected to $desthost as $destuser successfully"
  50                 else
  51                         fatal "Can't connect to $desthost as $destuser."
  52                 fi
  53         fi
  54         # see that rdiff-backup has the same version as here
  55         debug "ssh $desthost -l $destuser '$RDIFFBACKUP -V'\""
  56         remoteversion=`ssh $desthost -l $destuser "$RDIFFBACKUP -V | grep rdiff-backup"`
  57         localversion=`$RDIFFBACKUP -V`
  58         if [ "$remoteversion" != "$localversion" ]; then
  59                 fatal "rdiff-backup does not have the same version on this computer and the backup server."
  60         fi
  61         execstr_serverpart="$destuser@$desthost::$destdir/$label"
  62 else
  63         execstr_serverpart="$destdir/$label"
  64 fi
  65
  66 ### SOURCE ###
  67
  68 [ "$label" != "" ] || fatal "Source missing label"
  69 [ "$sourcetype" == "local" ] || fatal "Only local source type supported"
  70 [ "$include" != "" -o "$vsinclude" != "" ] || fatal "No source includes specified"
  71 #TODO should I test for vsinclude if usevservers=1?
  72
  73 execstr_clientpart="/"
  74
  75 ## REMOVE OLD BACKUPS
  76
  77 if [ "`echo $keep | tr -d 0-9`" == "" ]; then
  78         keep="${keep}D"
  79 fi
  80
  81 removestr="rdiff-backup --force --remove-older-than $keep "
  82 if [ "$desttype" == "remote" ]; then
  83         removestr="${removestr}${destuser}@${desthost}::"
  84 fi
  85 removestr="${removestr}${destdir}/${label}";
  86
  87 debug "$removestr"
  88 if [ ! $test ]; then
  89         output=`$removestr 2>&1`
  90         code=$?
  91         if [ "$code" == "0" ]; then
  92                 debug $output
  93                 info "Removing backups older than $keep days succeeded."
  94         else
  95                 warning $output
  96                 warning "Failed removing backups older than $keep."
  97         fi
  98 fi
  99
 100 ## EXECUTE ##
 101
 102 execstr="$RDIFFBACKUP $options --print-statistics "
 103
 104 # TODO: order the includes and excludes
 105
 106 # excludes
 107 for i in $exclude; do
 108         str="${i//__star__/*}"
 109         execstr="${execstr}--exclude '$str' "
 110 done
 111
 112 # includes
 113 for i in $include; do
 114         str="${i//__star__/*}"
 115         execstr="${execstr}--include '$str' "
 116 done
 117
 118 # vsinclude
 119 if [ $usevserver ]
 120 then
 121         for vserver in `ls $VROOTDIR|grep -v lost+found`
 122         do
 123                 for vi in $vsinclude
 124                 do
 125                         str="${vi//__star__/*}"
 126                         execstr="${execstr}--include '$VROOTDIR/$vserver$str' "
 127                 done
 128         done
 129 fi
 130
 131 # exclude everything else
 132 execstr="${execstr}--exclude '/*' "
 133
 134 # include client-part and server-part
 135 execstr="${execstr}$execstr_clientpart $execstr_serverpart"
 136
 137 debug "$execstr"
 138 if [ ! $test ]; then
 139         output=`nice -n $nicelevel su -c "$execstr" 2>&1`
 140         code=$?
 141         if [ "$code" == "0" ]; then
 142                 debug $output
 143                 info "Successfully finished backing up source '$label'"
 144         else
 145                 warning $output
 146                 warning "Failed backup up source '$label'"
 147         fi
 148 fi
 149
 150 return 0