#!c:\perl\bin\perl.exe -w

# props to http://myweb.facstaff.wwu.edu/~riedesg/sysadmin1138/ for most of this code!
use strict;
use warnings;

use Net::SNMP;
use Time::Seconds;
use Time::Piece;

# provide your SNMP community string and your list of servers below
my $community = 'public';
my @servers = uc ( shift ) || qw/FS1 FS2 FS3/;  # lets you specify a server on the command line for quick query
# end of user-provided information

my $timenow = localtime;  # Mon Aug 26 14:30:09 2002
$enddate) = map $_->strftime('%Y-%m-%d'), $timenow, $weeks, $start, $end;
my ($timestamp) = map $_->strftime('%Y-%m-%d '), $timenow;

my @report;
my $NWBaseOID = ".1.3.6.1.4.1.23.2.28.2.14";	# .iso.org.dod.internet.private.enterprises.novell.mibDoc.nwServer.nwFileSystem.nwFSVolTable
my $NWNameOID = $NWBaseOID . ".1.2.";		# .iso.org.dod.internet.private.enterprises.novell.mibDoc.nwServer.nwFileSystem.nwFSVolTable.nwFSVolEntry.nwVolPhysicalName
my $NWVolSizeOID = $NWBaseOID . ".1.3.";	# .iso.org.dod.internet.private.enterprises.novell.mibDoc.nwServer.nwFileSystem.nwFSVolTable.nwFSVolEntry.nwVolSize in KB
my $NWVolFreeOID = $NWBaseOID . ".1.4.";	# .iso.org.dod.internet.private.enterprises.novell.mibDoc.nwServer.nwFileSystem.nwFSVolTable.nwFSVolEntry.nwVolFree in KB
my $NWVolPurgableOID = $NWBaseOID . ".1.5.";	# .iso.org.dod.internet.private.enterprises.novell.mibDoc.nwServer.nwFileSystem.nwFSVolTable.nwFSVolEntry.nwVolFreeable in KB
my $NWVolMountedOID = $NWBaseOID . ".1.8.";	# .iso.org.dod.internet.private.enterprises.novell.mibDoc.nwServer.nwFileSystem.nwFSVolTable.nwFSVolEntry.nwVolMounted, 1=mounted, 2=unmounted

for my $servername (@servers) {
    my ($Session, $Error) = Net::SNMP->session( -hostname => $servername, -community => $community );
    my $Table = $Session->get_table( -baseoid => $NWBaseOID );
    print STDERR "No info for $servername!\n" unless defined $Table;
    push @report, "$timestamp\t$servername / ERR\tERR\n" unless defined $Table;
    next unless defined $Table;
    for (my $drivenumber = 1; $drivenumber < 256 ; $drivenumber++) {     # Cluster drives start at 255 and work DOWN
        next unless $Table -> { $NWVolMountedOID . $drivenumber };
        next if $Table -> { $NWNameOID . $drivenumber } =~ /_ADMIN/;
        my $diskname    = $Table -> { $NWNameOID . $drivenumber}.":"; # Appends a ":" for backward compatibility
        my $totalsize   = $Table -> { $NWVolSizeOID . $drivenumber};
        my $freespace   = $Table -> { $NWVolFreeOID . $drivenumber};
        my $utilized = 100 - int ( $freespace / $totalsize * 100 );
        push @report, "$servername / $diskname\t$utilized\n";
    }
    $Session->close();
}
print sort @report;