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 $0`
  14 PIDFILE="/var/run/backup-script.pid"
  15 QUICK=0
  16 ONLY_LATEST=0
  17
  18 export LC_ALL=C
  19
  20 declare -i count=0
  21 declare -i snapshots=0
  22
  23 # Default settings, can be overwritten in backup-script.conf:
  24 [ -d "/usr/local/etc/backup-script.d" ] \
  25         && conf_d="/usr/local/etc/backup-script.d" \
  26         || conf_d="/etc/backup-script.d"
  27 default_target=""
  28 default_generations=0
  29
  30 # Search configuration file (last one is used as default!)
  31 for conf in \
  32         "/usr/local/etc/backup-script.conf" \
  33         "/etc/backup-script.conf" \
  34         "${conf_d}/backup-script.conf" \
  35         "/usr/local/etc/backup-script.conf" \
  36 ; do
  37         if [ -r "$conf" ]; then
  38                 source "$conf"
  39                 break
  40         fi
  41 done
  42
  43 Usage() {
  44         echo "Usage: $NAME [-q|--quick] [<system> [<system> [...]]]"
  45         echo "       $NAME {-r|--running}"
  46         exit 2
  47 }
  48
  49 Check_Size() {
  50         # $1: directory
  51         # $2: padding
  52
  53         if [ "$QUICK" = "0" ]; then
  54                 size=`du -Hhs "$1" | cut -f1`
  55                 echo "$2  - Size:" $size
  56         fi
  57 }
  58
  59 Check_Stamp() {
  60         # $1: stamp file
  61         # $2: padding
  62
  63         if [ -f "$1" ]; then
  64                 if [ "$(uname)" = "Linux" ]; then
  65                         last=`LC_ALL=C stat "$1" | grep "^Modify: " \
  66                          | cut -d':' -f2- | cut -d. -f1`
  67                 else
  68                         last=`LC_ALL=C stat -f "%Sc" "$1"`
  69                 fi
  70                 [ -n "$last" ] && echo "$2  - Date:" $last
  71                 code=
  72                 source "$1"
  73                 case "$code" in
  74                   0)    txt=", OK"; ;;
  75                   24)   txt=", WARNING (some files vanished during backup)"; ;;
  76                   *)    txt=", ERROR"
  77                 esac
  78                 [ -n "$code" ] && echo "$2  - Result code: $code$txt"
  79         else
  80                 echo "$2  - No timestamp recorded! Backup currently running or aborted?"
  81         fi
  82 }
  83
  84 Snapshot_Info() {
  85         echo "  - Snapshot: $1"
  86         Check_Size "$1" "  "
  87         Check_Stamp "$1/.stamp" "  "
  88 }
  89
  90 if [ "$1" == "-r" -o "$1" == "--running" ]; then
  91         pid="$(cat "$PIDFILE" 2>/dev/null)"
  92         if [ -n "$pid" ]; then
  93                 if kill -0 "$pid" >/dev/null 2>&1; then
  94                         echo "Backup job running with PID $pid."
  95                         echo
  96                         pstree -ap "$pid" 2>/dev/null
  97                         exit 0
  98                 else
  99                         echo "No backup running (invalid PID $pid in \"$PIDFILE\")."
 100                         exit 1
 101                 fi
 102         fi
 103         echo "No backup running (no PID file \"$PIDFILE\" found)."
 104         exit 1
 105 fi
 106
 107 while [ $# -gt 0 ]; do
 108         case "$1" in
 109                 "--latest"|"-l")
 110                         ONLY_LATEST=1
 111                         ;;
 112                 "--quick"|"-q")
 113                         QUICK=1
 114                         ;;
 115                 "-"*)
 116                         Usage
 117                         ;;
 118                 *)
 119                         break
 120         esac
 121         shift
 122 done
 123
 124 if [ $# -ge 1 ]; then
 125         for s in "$@"; do
 126                 if [ ! -r "${conf_d}/$s" ]; then
 127                         echo "$NAME: Can' read \"${conf_d}/$s\"!"
 128                         exit 1
 129                 fi
 130                 sys="$sys ${conf_d}/$s"
 131         done
 132 else
 133         sys="${conf_d}/"*
 134 fi
 135
 136 [ -r "${conf_d}/backup-script.conf" ] && source "${conf_d}/backup-script.conf"
 137
 138 for f in $sys; do
 139         [ -r "$f" -a -f "$f" ] || continue
 140
 141         fname=`basename $f`
 142         case "$fname" in
 143                 "backup-script.conf"|*.sh)
 144                         continue
 145                         ;;
 146         esac
 147
 148         # Set global defaults
 149         system="$fname"
 150         target="$default_target"
 151         generations="$default_generations"
 152
 153         # Read in system configuration file
 154         source "$f"
 155
 156         target="$target/$system"
 157
 158         [ -d "$target" ] || continue
 159
 160         # System name
 161         [ "$system" = "$fname" ] && echo "$fname" || echo "$fname [$system]"
 162
 163         # System target directory
 164         echo "- Target: $target"
 165
 166         if [ $generations -gt 0 ]; then
 167                 if [ "$ONLY_LATEST" = "0" ]; then
 168                         for s in $target/[0-9]*-[0-9]* $target/current; do
 169                                 [ -e "$s" ] || continue
 170                                 Snapshot_Info "$s"
 171                                 snapshots=$snapshots+1
 172                         done
 173                 elif [ -e "$target/latest" ]; then
 174                         Snapshot_Info "$target/latest"
 175                         snapshots=$snapshots+1
 176                 fi
 177         else
 178                 # Timestamp and result code
 179                 Check_Size "$target"
 180                 Check_Stamp "$target/.stamp"
 181                 snapshots=$snapshots+1
 182         fi
 183
 184         count=$count+1
 185         echo
 186 done
 187
 188 if [ $count -lt 1 ]; then
 189         echo "No backups found!"
 190         exit 1
 191 fi
 192 [ $count -eq 1 ] && sc="" || sc="s"
 193 [ $snapshots -eq 1 ] && ss="" || ss="s"
 194 echo "$count system backup$sc found, $snapshots snapshot$ss."
 195
 196 # -eof-