NetApp - Get a list of volumes containing too much LUNs

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62

#!/bin/bash

KEY_FILE="/root/.ssh/netapp.dsa"
SSH_OPTS="/root/.ssh/netapp-ssh_config"
FAS_CTRL=$1

ssh_fas() {
  # $@: commands for Data ONTAP
  COMMANDS="$@"
  /usr/bin/ssh -i $KEY_FILE -l root -F $SSH_OPTS $COMMANDS
}

for volume in $( ssh_fas $FAS_CTRL vol status | grep "vol.* online" | awk '{ print $1 }' ); do
  VOL_SIZE="$( ssh_fas $FAS_CTRL vol size $volume | awk '{ print $8 }' | sed "s,.,," )"
  VOL_UNIT_PARAM="$( echo "${#VOL_SIZE} - 1" | bc )"
  VOL_UNIT="${VOL_SIZE:$VOL_UNIT_PARAM:1}"

  case $VOL_UNIT in
    k) CONV="1024";;
    m) CONV="1024 * 1024";;
    g) CONV="1024 * 1024 * 1024";;
  esac

  VOL_SIZE="$( echo "scale=0; ${VOL_SIZE/$VOL_UNIT/} * $CONV" | bc )"

  # Subtract the snap reserve (if any)
  SNAP="$( ssh_fas $FAS_CTRL snap reserve $volume | cut -d  -f7 | sed "s,%,," )"

  if [ $SNAP -gt 0 ] ; then
    SNAP_SIZE="$( echo "$VOL_SIZE * $SNAP / 100" | bc )"
    REMAINING_VOL_SIZE="$( echo "$VOL_SIZE - $SNAP_SIZE" | bc )"
  else
    SNAP_SIZE=0
    REMAINING_VOL_SIZE=$VOL_SIZE
  fi

  # Get the luns created inside the volume
  LUN_SIZE_TOTAL=0
  for lunsize in $( ssh_fas $FAS_CTRL lun show -l ${volume} | awk '{ print $3 }' | sed -e "s,(,," -e "s,),," ); do
    LUN_SIZE_TOTAL="$( echo "$LUN_SIZE_TOTAL + $lunsize" | bc )"
    REMAINING_VOL_SIZE="$( echo "$REMAINING_VOL_SIZE - $lunsize" | bc )"
  done

  # Get the estimated space necessary.
  VOL_RESERVE="$( echo "$VOL_SIZE * 3 / 100" | bc )"
  echo "              VOL_NAME: $volume"
  echo "           VOLUME_SIZE: $( echo "scale=2; $VOL_SIZE / 1024 / 1024 / 1024" | bc )G"
  echo "           - SNAP_SIZE: $( echo "scale=2; $SNAP_SIZE / 1024 / 1024 / 1024" | bc )G"
  echo "             SUB_TOTAL: $( echo "scale=2; ($VOL_SIZE - $SNAP_SIZE) / 1024 / 1024 / 1024" | bc )G"
  echo
  echo "      - TOTAL_LUN_SIZE: $( echo "scale=2; $LUN_SIZE_TOTAL / 1024 / 1024 / 1024" | bc )G"
  echo "             SUB_TOTAL: $( echo "scale=2; ($VOL_SIZE - $SNAP_SIZE - $LUN_SIZE_TOTAL) / 1024 / 1024 / 1024" | bc )G"
  echo
  echo "         MISSING_SPACE:"
  DIFFERENCE_VOL_LUN="$( echo "scale=2; ($VOL_SIZE - $SNAP_SIZE - $LUN_SIZE_TOTAL)" | bc | sed "s,-,," )"
  echo "    DIFFERENCE_VOL_LUN: $( echo "scale=2; $DIFFERENCE_VOL_LUN / 1024 / 1024 / 1024" | bc )G"
  echo "         + VOL_RESERVE: $( echo "scale=2; $VOL_RESERVE / 1024 / 1024 / 1024" | bc )G"
  echo "             SUB_TOTAL: $( echo "scale=2; ($DIFFERENCE_VOL_LUN + $VOL_RESERVE) / 1024 / 1024 / 1024" | bc )G"
  echo
  echo
  echo
done