bin/backup-status

   1 #!/bin/bash
   2 #
   3 # backup-script system for cloning systems using rsync
   4 # Copyright (c)2008-2016 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 $0`
  14 PIDFILE="/var/run/backup-script.pid"
  15 QUICK=0
  16 ONLY_ERRORS=0
  17 ONLY_LATEST=0
  18
  19 export LC_ALL=C
  20
  21 declare -i count=0
  22 declare -i snapshots=0
  23
  24 # Default settings, can be overwritten in backup-script.conf:
  25 [ -d "/usr/local/etc/backup-script.d" ] \
  26         && conf_d="/usr/local/etc/backup-script.d" \
  27         || conf_d="/etc/backup-script.d"
  28 default_target="/var/backups"
  29 default_generations=0
  30
  31 # Search configuration file (last one is used as default!)
  32 for conf in \
  33         "/usr/local/etc/backup-script.conf" \
  34         "/etc/backup-script.conf" \
  35         "${conf_d}/backup-script.conf" \
  36         "/usr/local/etc/backup-script.conf" \
  37 ; do
  38         if [ -r "$conf" ]; then
  39                 source "$conf"
  40                 break
  41         fi
  42 done
  43
  44 Usage() {
  45         echo "Usage: $NAME [--errors|--latest] [--quick] [<system> [<system> [...]]]"
  46         echo "       $NAME --running"
  47         echo
  48         echo "  --errors, -e    Only show current backups with errors (implies \"--latest\")."
  49         echo "  --latest, -l    Only show latest backup generations."
  50         echo "  --quick, -q     Don't calculate backup sizes."
  51         echo "  --running, -r   Check if an \"backup-script\" task is currently running."
  52         echo
  53         exit 2
  54 }
  55
  56 Check_Size() {
  57         # $1: directory
  58         # $2: padding
  59
  60         if [ "$QUICK" = "0" ]; then
  61                 size=`du -Hhs "$1" | cut -f1`
  62                 echo "$2  - Size:" $size
  63         fi
  64 }
  65
  66 Check_Stamp() {
  67         # $1: stamp file
  68         # $2: padding
  69
  70         if [ -f "$1" ]; then
  71                 declare -i code=-1
  72                 declare -i start_t=-1
  73                 start=""
  74                 declare -i end_t=-1
  75                 end=""
  76                 declare -i duration_t=-1
  77
  78                 # Read in "stamp file"
  79                 source "$1"
  80
  81                 if [ $start_t -gt 0 ] && [ $end_t -gt 0 ]; then
  82                         if [ "$(uname)" = "Linux" ]; then
  83                                 start=$(date -d @"$start_t")
  84                                 end=$(date -d @"$end_t")
  85                         else
  86                                 start=$(date -r "$start_t")
  87                                 end=$(date -r "$end_t")
  88                         fi
  89                         duration_t=$end_t-$start_t
  90                 else
  91                         if [ "$(uname)" = "Linux" ]; then
  92                                 end=`LC_ALL=C stat "$1" | grep "^Modify: " \
  93                                  | cut -d':' -f2- | cut -d. -f1`
  94                         else
  95                                 end=`LC_ALL=C stat -f "%Sc" "$1"`
  96                         fi
  97                 fi
  98                 [ -n "$start" ] && echo "$2  - Start date:" $start
  99                 [ -n "$end" ] && echo "$2  - End date:" $end
 100                 if [ $duration_t -gt -1 ]; then
 101                         declare -i s=$duration_t
 102                         if [ $s -ge 60 ]; then
 103                                 declare -i m=$(($s/60))
 104                                 declare -i s=$(($s%60))
 105                                 if [ $m -ge 60 ]; then
 106                                         declare -i h=$(($m/60))
 107                                         declare -i m=$(($m%60))
 108                                         if [ $h -ge 24 ]; then
 109                                                 declare -i d=$(($h/24))
 110                                                 declare -i h=$(($h%24))
 111                                                 duration="${d}d${h}h${m}m${s}s"
 112                                         else
 113                                                 duration="${h}h${m}m${s}s"
 114                                         fi
 115                                 else
 116                                         duration="${m}m${s}s"
 117                                 fi
 118                         else
 119                                 duration="${s}s"
 120                         fi
 121                         echo "$2  - Duration:" $duration
 122                 fi
 123
 124                 case "$code" in
 125                   0)    txt=", OK"; ;;
 126                   24)   txt=", WARNING (some files vanished during backup)"; ;;
 127                   *)    txt=", ERROR"
 128                 esac
 129                 [ $code -ge 0 ] && echo "$2  - Result code: ${code}${txt}"
 130         else
 131                 echo "$2  - No timestamp recorded! Backup currently running or aborted?"
 132         fi
 133 }
 134
 135 Snapshot_Info() {
 136         echo "  - Snapshot: $1"
 137         Check_Size "$1" "  "
 138         Check_Stamp "$1/.stamp" "  "
 139 }
 140
 141 Get_Result_Code() {
 142         code=1
 143         [ -r "$1" ] && source "$1"
 144         [ -z "$code" ] && code=1
 145         echo $code
 146 }
 147
 148 if [ "$1" == "-r" -o "$1" == "--running" ]; then
 149         pid="$(cat "$PIDFILE" 2>/dev/null)"
 150         if [ -n "$pid" ]; then
 151                 if kill -0 "$pid" >/dev/null 2>&1; then
 152                         echo "Backup job running with PID $pid."
 153                         echo
 154                         pstree -ap "$pid" 2>/dev/null
 155                         exit 0
 156                 else
 157                         echo "No backup running (invalid PID $pid in \"$PIDFILE\")."
 158                         exit 1
 159                 fi
 160         fi
 161         echo "No backup running (no PID file \"$PIDFILE\" found)."
 162         exit 1
 163 fi
 164
 165 while [ $# -gt 0 ]; do
 166         case "$1" in
 167                 "--errors"|"-e")
 168                         ONLY_ERRORS=1
 169                         ONLY_LATEST=1
 170                         ;;
 171                 "--latest"|"-l")
 172                         ONLY_LATEST=1
 173                         ;;
 174                 "--quick"|"-q")
 175                         QUICK=1
 176                         ;;
 177                 "-"*)
 178                         Usage
 179                         ;;
 180                 *)
 181                         break
 182         esac
 183         shift
 184 done
 185
 186 if [ $# -ge 1 ]; then
 187         for s in "$@"; do
 188                 if [ ! -r "${conf_d}/$s" ]; then
 189                         echo "$NAME: Can' read \"${conf_d}/$s\"!"
 190                         exit 1
 191                 fi
 192                 sys="$sys ${conf_d}/$s"
 193         done
 194 else
 195         sys="${conf_d}/"*
 196 fi
 197
 198 for f in $sys; do
 199         [ -r "$f" -a -f "$f" ] || continue
 200
 201         fname=`basename $f`
 202         case "$fname" in
 203                 "backup-script.conf"|*.sh)
 204                         continue
 205                         ;;
 206         esac
 207
 208         # Set global defaults
 209         system="$fname"
 210         target="$default_target"
 211         generations="$default_generations"
 212
 213         # Read in system configuration file
 214         source "$f"
 215
 216         target="$target/$(basename "$f")"
 217
 218         [ -d "$target" ] || continue
 219
 220         if [ "$ONLY_ERRORS" != "0" ]; then
 221                 [ $generations -gt 0 ] \
 222                         && result=$(Get_Result_Code "$target/latest/.stamp") \
 223                         || result=$(Get_Result_Code "$target/.stamp")
 224                 [ $result -eq 0 -o $result -eq 24 ] && continue
 225         fi
 226
 227         # System name
 228         [ "$system" = "$fname" ] && echo "$fname" || echo "$fname [$system]"
 229
 230         # System target directory
 231         echo "- Target: $target"
 232
 233         if [ $generations -gt 0 ]; then
 234                 if [ "$ONLY_LATEST" = "0" ]; then
 235                         for s in $target/[0-9]*-[0-9]* $target/current; do
 236                                 [ -e "$s" ] || continue
 237                                 Snapshot_Info "$s"
 238                                 snapshots=$snapshots+1
 239                         done
 240                 elif [ -e "$target/latest" ]; then
 241                         Snapshot_Info "$target/latest"
 242                         snapshots=$snapshots+1
 243                 fi
 244         else
 245                 # Timestamp and result code
 246                 Check_Size "$target"
 247                 Check_Stamp "$target/.stamp"
 248                 snapshots=$snapshots+1
 249         fi
 250
 251         count=$count+1
 252         echo
 253 done
 254
 255 if [ "$ONLY_ERRORS" != "0" ]; then
 256         status="failed "; p0="."; pN="!"
 257 else
 258         status=""; p0="!"; pN="."
 259 fi
 260 if [ $count -lt 1 ]; then
 261         echo "No ${status}backups found${p0}"
 262         exit 1
 263 fi
 264 [ $count -eq 1 ] && sc="" || sc="s"
 265 [ $snapshots -eq 1 ] && ss="" || ss="s"
 266 echo "$count ${status}system backup$sc found, $snapshots snapshot$ss${pN}"
 267
 268 # -eof-