scripts/qemu-guest-agent/fsfreeze-hook

   1 #!/bin/sh
   2
   3 # This script is executed when a guest agent receives fsfreeze-freeze and
   4 # fsfreeze-thaw command, if it is specified in --fsfreeze-hook (-F)
   5 # option of qemu-ga or placed in default path (/etc/qemu/fsfreeze-hook).
   6 # When the agent receives fsfreeze-freeze request, this script is issued with
   7 # "freeze" argument before the filesystem is frozen. And for fsfreeze-thaw
   8 # request, it is issued with "thaw" argument after filesystem is thawed.
   9
  10 LOGFILE=/var/log/qga-fsfreeze-hook.log
  11 FSFREEZE_D=$(dirname -- "$0")/fsfreeze-hook.d
  12
  13 # Check whether file $1 is a backup or rpm-generated file and should be ignored
  14 is_ignored_file() {
  15     case "$1" in
  16         *~ | *.bak | *.orig | *.rpmnew | *.rpmorig | *.rpmsave | *.sample | *.dpkg-old | *.dpkg-new | *.dpkg-tmp | *.dpkg-dist | *.dpkg-bak | *.dpkg-backup | *.dpkg-remove)
  17             return 0 ;;
  18     esac
  19     return 1
  20 }
  21
  22 # Iterate executables in directory "fsfreeze-hook.d" with the specified args
  23 [ ! -d "$FSFREEZE_D" ] && exit 0
  24 for file in "$FSFREEZE_D"/* ; do
  25     is_ignored_file "$file" && continue
  26     [ -x "$file" ] || continue
  27     printf "$(date): execute $file $@\n" >>$LOGFILE
  28     "$file" "$@" >>$LOGFILE 2>&1
  29     STATUS=$?
  30     printf "$(date): $file finished with status=$STATUS\n" >>$LOGFILE
  31 done
  32
  33 exit 0