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 "$conf" ]; then
  39                 # shellcheck source=/dev/null
  40                 source "$conf"
  41                 break
  42         fi
  43 done
  44
  45 Usage() {
  46         echo "Usage: $NAME [--errors|--latest] [--quick] [<system> [<system> [...]]]"
  47         echo "       $NAME --running"
  48         echo
  49         echo "  --errors, -e    Only show current backups with errors (implies \"--latest\")."
  50         echo "  --latest, -l    Only show latest backup generations."
  51         echo "  --quick, -q     Don't calculate backup sizes."
  52         echo "  --running, -r   Check if an \"backup-script\" task is currently running."
  53         echo
  54         exit 2
  55 }
  56
  57 Check_Size() {
  58         # $1: directory
  59         # $2: padding
  60
  61         if [ "$QUICK" = "0" ]; then
  62                 size=`du -Hhs "$1" | cut -f1`
  63                 echo "$2  - Size:" $size
  64         fi
  65 }
  66
  67 Check_Stamp() {
  68         # $1: stamp file
  69         # $2: padding
  70
  71         if [ -f "$1" ]; then
  72                 declare -i code=-1
  73                 declare -i start_t=-1
  74                 start=""
  75                 declare -i end_t=-1
  76                 end=""
  77                 declare -i duration_t=-1
  78
  79                 # Read in "stamp file"
  80                 # shellcheck source=/dev/null
  81                 source "$1"
  82
  83                 if [ $start_t -gt 0 ] && [ $end_t -gt 0 ]; then
  84                         if [ "$(uname)" = "Linux" ]; then
  85                                 start=$(date -d @"$start_t")
  86                                 end=$(date -d @"$end_t")
  87                         else
  88                                 start=$(date -r "$start_t")
  89                                 end=$(date -r "$end_t")
  90                         fi
  91                         duration_t=$end_t-$start_t
  92                 else
  93                         if [ "$(uname)" = "Linux" ]; then
  94                                 end=`LC_ALL=C stat "$1" | grep "^Modify: " \
  95                                  | cut -d':' -f2- | cut -d. -f1`
  96                         else
  97                                 end=`LC_ALL=C stat -f "%Sc" "$1"`
  98                         fi
  99                 fi
 100                 [ -n "$start" ] && echo "$2  - Start date:" $start
 101                 [ -n "$end" ] && echo "$2  - End date:" $end
 102                 if [ $duration_t -gt -1 ]; then
 103                         declare -i s=$duration_t
 104                         if [ $s -ge 60 ]; then
 105                                 declare -i m=$(($s/60))
 106                                 declare -i s=$(($s%60))
 107                                 if [ $m -ge 60 ]; then
 108                                         declare -i h=$(($m/60))
 109                                         declare -i m=$(($m%60))
 110                                         if [ $h -ge 24 ]; then
 111                                                 declare -i d=$(($h/24))
 112                                                 declare -i h=$(($h%24))
 113                                                 duration="${d}d${h}h${m}m${s}s"
 114                                         else
 115                                                 duration="${h}h${m}m${s}s"
 116                                         fi
 117                                 else
 118                                         duration="${m}m${s}s"
 119                                 fi
 120                         else
 121                                 duration="${s}s"
 122                         fi
 123                         echo "$2  - Duration:" $duration
 124                 fi
 125
 126                 case "$code" in
 127                   0)    txt=", OK"; ;;
 128                   24)   txt=", WARNING (some files vanished during backup)"; ;;
 129                   *)    txt=", ERROR"
 130                 esac
 131                 [ $code -ge 0 ] && echo "$2  - Result code: ${code}${txt}"
 132         else
 133                 echo "$2  - No timestamp recorded! Backup currently running or aborted?"
 134         fi
 135 }
 136
 137 Snapshot_Info() {
 138         echo "  - Snapshot: $1"
 139         Check_Size "$1" "  "
 140         Check_Stamp "$1/.stamp" "  "
 141 }
 142
 143 Get_Result_Code() {
 144         code=1
 145         # shellcheck source=/dev/null
 146         [ -r "$1" ] && source "$1"
 147         [ -z "$code" ] && code=1
 148         echo $code
 149 }
 150
 151 if [[ "$1" == "-r" || "$1" == "--running" ]]; then
 152         pid="$(cat "$PIDFILE" 2>/dev/null)"
 153         if [ -n "$pid" ]; then
 154                 if kill -0 "$pid" >/dev/null 2>&1; then
 155                         echo "Backup job running with PID $pid."
 156                         echo
 157                         pstree -ap "$pid" 2>/dev/null
 158                         exit 0
 159                 else
 160                         echo "No backup running (invalid PID $pid in \"$PIDFILE\")."
 161                         exit 1
 162                 fi
 163         fi
 164         echo "No backup running (no PID file \"$PIDFILE\" found)."
 165         exit 1
 166 fi
 167
 168 while [ $# -gt 0 ]; do
 169         case "$1" in
 170                 "--errors"|"-e")
 171                         ONLY_ERRORS=1
 172                         ONLY_LATEST=1
 173                         ;;
 174                 "--latest"|"-l")
 175                         ONLY_LATEST=1
 176                         ;;
 177                 "--quick"|"-q")
 178                         QUICK=1
 179                         ;;
 180                 "-"*)
 181                         Usage
 182                         ;;
 183                 *)
 184                         break
 185         esac
 186         shift
 187 done
 188
 189 if [ $# -ge 1 ]; then
 190         for s in "$@"; do
 191                 if [ ! -r "${conf_d}/$s" ]; then
 192                         echo "$NAME: Can' read \"${conf_d}/$s\"!"
 193                         exit 1
 194                 fi
 195                 sys+=("${conf_d}/$s")
 196         done
 197 else
 198         sys=("${conf_d}/"*)
 199 fi
 200
 201 for f in "${sys[@]}"; do
 202         [[ -r "$f" && -f "$f" ]] || continue
 203
 204         fname=`basename $f`
 205         case "$fname" in
 206                 "backup-script.conf"|*.sh)
 207                         continue
 208                         ;;
 209         esac
 210
 211         # Set global defaults
 212         system="$fname"
 213         target="$default_target"
 214         generations="$default_generations"
 215
 216         # Read in system configuration file
 217         # shellcheck source=/dev/null
 218         source "$f"
 219
 220         target="$target/$(basename "$f")"
 221
 222         [ -d "$target" ] || continue
 223
 224         if [ "$ONLY_ERRORS" != "0" ]; then
 225                 [ $generations -gt 0 ] \
 226                         && result=$(Get_Result_Code "$target/latest/.stamp") \
 227                         || result=$(Get_Result_Code "$target/.stamp")
 228                 [[ $result -eq 0 || $result -eq 24 ]] && continue
 229         fi
 230
 231         # System name
 232         [ "$system" = "$fname" ] && echo "$fname" || echo "$fname [$system]"
 233
 234         # System target directory
 235         echo "- Target: $target"
 236
 237         if [ $generations -gt 0 ]; then
 238                 if [ "$ONLY_LATEST" = "0" ]; then
 239                         for s in $target/[0-9]*-[0-9]* $target/current; do
 240                                 [ -e "$s" ] || continue
 241                                 Snapshot_Info "$s"
 242                                 snapshots=$snapshots+1
 243                         done
 244                 elif [ -e "$target/latest" ]; then
 245                         Snapshot_Info "$target/latest"
 246                         snapshots=$snapshots+1
 247                 fi
 248         else
 249                 # Timestamp and result code
 250                 Check_Size "$target"
 251                 Check_Stamp "$target/.stamp"
 252                 snapshots=$snapshots+1
 253         fi
 254
 255         count=$count+1
 256         echo
 257 done
 258
 259 if [ "$ONLY_ERRORS" != "0" ]; then
 260         status="failed "; p0="."; pN="!"
 261 else
 262         status=""; p0="!"; pN="."
 263 fi
 264 if [ $count -lt 1 ]; then
 265         echo "No ${status}backups found${p0}"
 266         exit 1
 267 fi
 268 [ $count -eq 1 ] && sc="" || sc="s"
 269 [ $snapshots -eq 1 ] && ss="" || ss="s"
 270 echo "$count ${status}system backup$sc found, $snapshots snapshot$ss${pN}"
 271
 272 # -eof-