[mrtg] A Scaled or Unscaled question.

[viana.gomes at bnpgroup.com]

Hi ,

 I've build a small script to get Disk information for my NT Servers , this is
done by the Rules of MRTG . My script returns in MegaBytes (integer values) the
used and Free
MBytes. I use a tool from the NT Resource Kit to get this values.


Here it is my script:
require "c:\\mrtg\\run\\cgi-lib.pl";
use SNMP_util;
&ReadParse(*in);
my $value = $in{'val'};
my $diskindex = $in{'disk'};
chomp $diskindex;
my $uptime = up();
chomp $uptime;
@diskinfo = `srvinfo -od $in{'val'}`;
     for (my $i = 0 ; $i <= $#diskinfo; $i++) {
my ( $disk , $type , $maxbytes , $used , $free )= split( /,/, $diskinfo[$i]);
chomp $used;
chomp $free;
chomp $disk;
if ( $disk eq $diskindex ) {
print "$used\n";
print "$free\n";
print "$uptime\n";
print "$hostname\n";
}
else {
}
}

sub up {
     my ($uptime);
     $hostname = substr $in{'val'},2;
     chomp $hostname;
     $hostname = lc $hostname;
     ($uptime) = snmpget ("mycomm\@$hostname", '.1.3.6.1.2.1.1.3.0');
     $uptime
}

Parts of My config file :

#*********************************************************************
# MRTG Configuration file.
# Check the Disk Space for all Our NT Server and Critical Workstations.
#*********************************************************************
#.....................................................................
# General options for all equipments and statistics.
#.....................................................................
WorkDir: d:\InetPub\wwwroot\Mrtg\
ThreshDir: c:\temp\
Refresh: 300
Interval: 30
Unscaled[_]: dwym
WithPeak[_]:wmy
XSize[_]:600
YSize[_]:300
kMG[_]: M
kilo[_]: 1024
YLegend[_]: Disk Capacity in MBytes
Legend1[_]: Used MBytes
Legend2[_]: Free MBytes
Legend3[_]: Peak Used
Legend4[_]: Peak Free
LegendI[_]: &nbsp;MBytes Used:
LegendO[_]: &nbsp;MBytes Free:
ShortLegend[_]: M
Options[_]: growright,integer,gauge
Background[_]:#ffffffff
bla,bla,bla...
**********************
#  F: Disk
Title[MYSERVF]: Disk usage for Disk F: in DBSERVER1 NT Server.
bla,bla,bla...
MaxBytes[MYSERVF]: 15318
Target[MYSERVF]: `perl c:\mrtg\run\disk.pl val=\\MYSERV disk=F$`
#**************************************************************************************************************************************



 Ok here follows my problem :

I get the graphics for this disk with the following legend :

Max  MBytes Used:            3877 (25.3%)                     Average  MBytes
Used:                                 3873 (25.3%)
                                       Current  MBytes Used:
                                                      3877 (25.3%)
Max  MBytes Free:           11441 (74.7%)                     Average  MBytes
Free:                                 11430 (74.6%)
                                           Current  MBytes Free:
                                                      11441 (74.7%)


 These are the values I get , and they are correct , but the problem is with the
 graphs I get the Scale goes from "0.0 M" up to "16.0 M" ???

 Is this normal ? Can this be a scale problem ?

 I've checked for all my disks and I see the same problem for a disk with
"MaxBytes" defined has 6854 (MBytes).
In this case my legend is :

Max  MBytes Used:           6698 (97.7%)                    Average  MBytes
Used:                                6631 (96.7%)
                                         Current  MBytes Used:
                                                     6696 (97.7%)
Max  MBytes Free:            885 (12.9%)                     Average  MBytes
Free:                                  215 (3.1%)
                                          Current  MBytes Free:
                                                      158 (2.3%)

 And my graph is scaled between 0.0 M and 7.2 M ?

Anyone has a tip or answer to this issue ?

Best regards to all and thanks in advance for your help.

Viana Gomes
BNP Portugal
Lisboa


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