bin/backup-status

   1 #!/bin/bash
   2 #
   3 # backup-script system for cloning systems using rsync
   4 # Copyright (c)2008-2015 Alexander Barton, alex@barton.de
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 # Please read the file COPYING, README and AUTHORS for more information.
  11 #
  12
  13 NAME=`basename $0`
  14 PIDFILE="/var/run/backup-script.pid"
  15 QUICK=0
  16
  17 export LC_ALL=C
  18
  19 declare -i count=0
  20 declare -i snapshots=0
  21
  22 # Default settings, can be overwritten in backup-script.conf:
  23 [ -d "/usr/local/etc/backup-script.d" ] \
  24         && conf_d="/usr/local/etc/backup-script.d" \
  25         || conf_d="/etc/backup-script.d"
  26 default_target=""
  27 default_generations=0
  28
  29 # Search configuration file (last one is used as default!)
  30 for conf in \
  31         "/usr/local/etc/backup-script.conf" \
  32         "/etc/backup-script.conf" \
  33         "${conf_d}/backup-script.conf" \
  34         "/usr/local/etc/backup-script.conf" \
  35 ; do
  36         if [ -r "$conf" ]; then
  37                 source "$conf"
  38                 break
  39         fi
  40 done
  41
  42 Check_Size() {
  43         # $1: directory
  44         # $2: padding
  45
  46         if [ "$QUICK" = "0" ]; then
  47                 size=`du -Hhs "$1" | cut -f1`
  48                 echo "$2  - Size:" $size
  49         fi
  50 }
  51
  52 Check_Stamp() {
  53         # $1: stamp file
  54         # $2: padding
  55
  56         if [ -f "$1" ]; then
  57                 if [ "$(uname)" = "Linux" ]; then
  58                         last=`LC_ALL=C stat "$1" | grep "^Modify: " \
  59                          | cut -d':' -f2- | cut -d. -f1`
  60                 else
  61                         last=`LC_ALL=C stat -f "%Sc" "$1"`
  62                 fi
  63                 [ -n "$last" ] && echo "$2  - Date:" $last
  64                 code=
  65                 source "$1"
  66                 case "$code" in
  67                   0)    txt=", OK"; ;;
  68                   24)   txt=", WARNING (some files vanished during backup)"; ;;
  69                   *)    txt=", ERROR"
  70                 esac
  71                 [ -n "$code" ] && echo "$2  - Result code: $code$txt"
  72         else
  73                 echo "$2  - No timestamp recorded! Backup currently running or aborted?"
  74         fi
  75 }
  76
  77 if [ "$1" == "-r" -o "$1" == "--running" ]; then
  78         pid="$(cat "$PIDFILE" 2>/dev/null)"
  79         if [ -n "$pid" ]; then
  80                 if kill -0 "$pid" >/dev/null 2>&1; then
  81                         echo "Backup job running with PID $pid."
  82                         exit 0
  83                 else
  84                         echo "No backup running (invalid PID $pid in \"$PIDFILE\")."
  85                         exit 1
  86                 fi
  87         fi
  88         echo "No backup running (no PID file \"$PIDFILE\" found)."
  89         exit 1
  90 fi
  91
  92 if [ "$1" == "-q" ]; then
  93         QUICK=1
  94         shift
  95 fi
  96
  97 case "$1" in
  98     "-"*)
  99         echo "Usage: $NAME [-q] [<system> [<system> [...]]]"
 100         echo "       $NAME {-r|--running}"
 101         exit 2
 102         ;;
 103 esac
 104
 105 if [ $# -ge 1 ]; then
 106         for s in "$@"; do
 107                 if [ ! -r "${conf_d}/$s" ]; then
 108                         echo "$NAME: Can' read \"${conf_d}/$s\"!"
 109                         exit 1
 110                 fi
 111                 sys="$sys ${conf_d}/$s"
 112         done
 113 else
 114         sys="${conf_d}/"*
 115 fi
 116
 117 [ -r "${conf_d}/backup-script.conf" ] && source "${conf_d}/backup-script.conf"
 118
 119 for f in $sys; do
 120         [ -r "$f" -a -f "$f" ] || continue
 121
 122         fname=`basename $f`
 123         case "$fname" in
 124                 "backup-script.conf"|*.sh)
 125                         continue
 126                         ;;
 127         esac
 128
 129         # Set global defaults
 130         system="$fname"
 131         target="$default_target"
 132         generations="$default_generations"
 133
 134         # Read in system configuration file
 135         source "$f"
 136
 137         target="$target/$system"
 138
 139         [ -d "$target" ] || continue
 140
 141         # System name
 142         [ "$system" = "$fname" ] && echo "$fname" || echo "$fname [$system]"
 143
 144         # System target directory
 145         echo "- Target: $target"
 146
 147         if [ $generations -gt 0 ]; then
 148                 for s in $target/current $target/[0-9]*-[0-9]*; do
 149                         [ -e "$s" ] || continue
 150                         echo "  - Snapshot: $s"
 151                         Check_Size "$s" "  "
 152                         Check_Stamp "$s/.stamp" "  "
 153                         snapshots=$snapshots+1
 154                 done
 155         else
 156                 # Timestamp and result code
 157                 Check_Size "$target"
 158                 Check_Stamp "$target/.stamp"
 159                 snapshots=$snapshots+1
 160         fi
 161
 162         count=$count+1
 163         echo
 164 done
 165
 166 if [ $count -lt 1 ]; then
 167         echo "No backups found!"
 168         exit 1
 169 fi
 170 [ $count -eq 1 ] && sc="" || sc="s"
 171 [ $snapshots -eq 1 ] && ss="" || ss="s"
 172 echo "$count system backup$sc found, $snapshots snapshot$ss."
 173
 174 # -eof-