#!/bin/sh

# script name: checkfsspace
# description: check available space of ufs and zfs 
#
# See companion tech tip on BigAdmin:
#    http://www.sun.com/bigadmin/content/submitted/automate_fs_check.jsp
#

# who receives warning message
RECEIVER=<your email address>

# warning threshold
USED_SPACE_PERCENT_WARN=80

# file for warning messages
LOG=<dir_of_checkfsspace>/fsspace_msg

PATH=/usr/bin:/usr/sbin; export PATH

# main()

echo "" > $LOG 

# check ufs 
df -h -F ufs | grep -v Filesystem | while read line
do
    USED_SPACE_PERCENT=`echo "$line" | nawk -F'[	% ]+' '{print $5}'`
    if [ $USED_SPACE_PERCENT -gt $USED_SPACE_PERCENT_WARN ]; then
        FS=`echo "$line" | nawk -F'[	% ]+' '{print $1}'`
        echo "UFS $FS has used $USED_SPACE_PERCENT% of its space." >> $LOG
    fi
done

# check zfs
if [ `df -F zfs | wc -l` -gt 0 ]; then
    /usr/sbin/zpool list -H | while read line
    do
        USED_SPACE_PERCENT=`echo "$line" | nawk -F'[	% ]+' '{print $5}'`
        if [ $USED_SPACE_PERCENT -gt $USED_SPACE_PERCENT_WARN ]; then
            POOL=`echo "$line" | nawk -F'[	% ]+' '{print $1}'`
            echo "ZFS pool $POOL has used $USED_SPACE_PERCENT% of its space." >> $LOG
        fi
    done
fi

if [ `cat $LOG | wc -c` -gt 1 ]; then
    mailx -s "`hostname` Space Warning" $RECEIVER < $LOG
fi

##############################################################################
### This script is submitted to BigAdmin by a user of the BigAdmin community.
### Sun Microsystems, Inc. is not responsible for the
### contents or the code enclosed. 
###
###
###  Copyright Sun Microsystems, Inc. ALL RIGHTS RESERVED
### Use of this software is authorized pursuant to the
### terms of the license found at
### http://www.sun.com/bigadmin/common/berkeley_license.jsp
##############################################################################