etc/periodic/daily/800.scrub-zfs

   1 #!/bin/sh
   2 #
   3 # $FreeBSD$
   4 #
   5
   6 # If there is a global system configuration file, suck it in.
   7 #
   8
   9 newline="
  10 " # A single newline
  11
  12 if [ -r /etc/defaults/periodic.conf ]
  13 then
  14     . /etc/defaults/periodic.conf
  15     source_periodic_confs
  16 fi
  17
  18 : ${daily_scrub_zfs_default_threshold=35}
  19
  20 case "$daily_scrub_zfs_enable" in
  21     [Yy][Ee][Ss])
  22         echo
  23         echo 'Scrubbing of zfs pools:'
  24
  25         if [ -z "${daily_scrub_zfs_pools}" ]; then
  26                 daily_scrub_zfs_pools="$(zpool list -H -o name)"
  27         fi
  28
  29         rc=0
  30         for pool in ${daily_scrub_zfs_pools}; do
  31                 # sanity check
  32                 _status=$(zpool list "${pool}" 2> /dev/null)
  33                 if [ $? -ne 0 ]; then
  34                         rc=2
  35                         echo "   WARNING: pool '${pool}' specified in"
  36                         echo "            '/etc/periodic.conf:daily_scrub_zfs_pools'"
  37                         echo "            does not exist"
  38                         continue
  39                 fi
  40                 _status=${_status##*$newline}
  41                 case ${_status} in
  42                 *FAULTED*)
  43                         rc=3
  44                         echo "Skipping faulted pool: ${pool}"
  45                         continue ;;
  46                 *UNAVAIL*)
  47                         rc=4
  48                         echo "Skipping unavailable pool: ${pool}"
  49                         continue ;;
  50                 esac
  51
  52                 # determine how many days shall be between scrubs
  53                 eval _pool_threshold=\${daily_scrub_zfs_$(echo "${pool}"|tr  ".:-" "_")_threshold}
  54                 if [ -z "${_pool_threshold}" ];then
  55                         _pool_threshold=${daily_scrub_zfs_default_threshold}
  56                 fi
  57
  58                 _last_scrub=$(zpool history ${pool} | \
  59                     egrep "^[0-9\.\:\-]{19} zpool scrub ${pool}\$" | tail -1 |\
  60                     cut -d ' ' -f 1)
  61                 if [ -z "${_last_scrub}" ]; then
  62                         # creation time of the pool if no scrub was done
  63                         _last_scrub=$(zpool history ${pool} | \
  64                             sed -ne '2s/ .*$//p')
  65                 fi
  66
  67                 # Now minus last scrub (both in seconds) converted to days.
  68                 _scrub_diff=$(expr -e \( $(date +%s) - \
  69                     $(date -j -f %F.%T ${_last_scrub} +%s) \) / 60 / 60 / 24)
  70                 if [ ${_scrub_diff} -lt ${_pool_threshold} ]; then
  71                         echo "   skipping scrubbing of pool '${pool}':"
  72                         echo "      last scrubbing is ${_scrub_diff} days ago, threshold is set to ${_pool_threshold} days"
  73                         continue
  74                 fi
  75
  76                 _status="$(zpool status ${pool} | grep scrub:)"
  77                 case "${_status}" in
  78                         *"scrub in progress"*)
  79                                 echo "   scrubbing of pool '${pool}' already in progress, skipping:"
  80                                 ;;
  81                         *"none requested"*)
  82                                 echo "   starting first scrub (since reboot) of pool '${pool}':"
  83                                 zpool scrub ${pool}
  84                                 [ $rc -eq 0 ] && rc=1
  85                                 ;;
  86                         *)
  87                                 echo "   starting scrub of pool '${pool}':"
  88                                 zpool scrub ${pool}
  89                                 [ $rc -eq 0 ] && rc=1
  90                                 ;;
  91                 esac
  92
  93                 echo "      consult 'zpool status ${pool}' for the result"
  94         done
  95         ;;
  96
  97     *)
  98         rc=0
  99         ;;
 100 esac
 101
 102 exit $rc