zfs_auto_scrub.sh

#
# this script will go through all pools and scrub them one at a time
# Via http://aspiringsysadmin.com/blog/2007/06/07/scrub-your-zfs-file-systems-regularly/
#
[email protected]

ZPOOL=/usr/sbin/zpool
TMPFILE=/tmp/scrub.sh.$$.$RANDOM

scrub_in_progress() {
  if $ZPOOL status $1 | grep "scrub in progress" >/dev/null; then
    return 0
  else
    return 1
  fi
}

$ZPOOL list | sed 1d | cut -d' ' -f1 | while read pool; do
  $ZPOOL scrub $pool

  while sleep 60; do
    if ! scrub_in_progress $pool; then
      break
    fi
  done

  if ! $ZPOOL status $pool | grep "with 0 errors" >/dev/null; then
    $ZPOOL status $pool >>$TMPFILE
  fi
done

if [ -s $TMPFILE ]; then
  cat $TMPFILE | mailx -s "zpool scrub on `hostname` generated errors" $MAILRECIPIENT
fi

rm -f $TMPFILE