Well, after figuring things out (and realizing that if you create a LUN in the same size as the volume it’ll break), I decided to write yet another script to figure out which LUNs needed fixing.
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; html-script: false crayon-selected ]#!/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 |
And with that you have a list of volumes, with the amount of space they need to resized in order to accomodate the contained LUNs and the snapshots.