#!/bin/sh
#
# e2croncheck --- put this in your weekly crontab 
#
# make sure you customize "VG" so it is your LVM # volume group name, 
# "VOLUME" so it is the name of the root logical volume, and "EMAIL" to
# be your e-mail address
#
# Written by Theodore Ts'o, Copyright 2007-2008
#
# This file may be redistributed under the terms of the 
# GNU Public License, version 2.
#

VG=ssd
VOLUME=root
SNAPSIZE=100m
EMAIL=tytso@mit.edu

TMPFILE=`mktemp -t e2fsck.log.XXXXXXXXXX`

OPTS="-Fttv -C0"
#OPTS="-Fttv -E fragcheck"

set -e
START="$(date +'%Y%m%d%H%M%S')"
lvcreate -s -L ${SNAPSIZE} -n "${VOLUME}-snap" "${VG}/${VOLUME}"
if nice logsave -as $TMPFILE e2fsck -p $OPTS "/dev/${VG}/${VOLUME}-snap" && \
   nice logsave -as $TMPFILE e2fsck -fy $OPTS "/dev/${VG}/${VOLUME}-snap" ; then
  echo 'Background scrubbing succeeded!'
  tune2fs -C 0 -T "${START}" "/dev/${VG}/${VOLUME}"
else
  echo 'Background scrubbing failed! Reboot to fsck soon!'
  tune2fs -C 16000 -T "19000101" "/dev/${VG}/${VOLUME}"
  if test -n "$RPT-EMAIL"; then 
    mail -s "E2fsck of /dev/${VG}/${VOLUME} failed!" $EMAIL < $TMPFILE
  fi
fi
lvremove -f "${VG}/${VOLUME}-snap"
rm $TMPFILE