[munin-users] smartmontools plugin - smartctl_exit_status

Hi all,

I am a newbie with munin. 
I've made my first install yesterday, to see the integration 
of smartmontools (because I write an article about 
smartmontools..)

It looks very nice :-)

But I see, that the output of smartctl_exit_status 
is not plausible.

I've two hard disks, one is ok, the other is not ok.
(I need the damaged disk to show smartmontools function..)

------------------------ /dev/hda -------------------------
[root@jupiter munin]# smartctl -H /dev/hda

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

[root@jupiter munin]# smartctl -l error /dev/hda

=== START OF READ SMART DATA SECTION ===
SMART Error Log Version: 1
No Errors Logged

------------------------ /dev/hdb -------------------------
[root@jupiter munin]# smartctl -H /dev/hdb

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: FAILED!
Drive failure expected in less than 24 hours. SAVE ALL DATA.
Failed Attributes:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      
UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0033   001   001   063    
Pre-fail  Always   FAILING_NOW 637
--------------------------- 8< ---------------------------


Munin shows the same status for both disks:
-------------------- 8< --------------------
Field: smartctl_exit_status 
Internal name: smartctl_exit_status     
Type: gauge     
Warn: 1         
Crit: None
-------------------- 8< --------------------

My plugin configuration:

/etc/munin/plugin-conf.d/munin-node

[smart_hda]
user root
group disk
env.smartargs -H -i -c -l error -l selftest -l selective -d 
ata
env.smartpath /usr/sbin/smartctl

[smart_hdb]
user root
group disk
env.smartargs -H -i -c -l error -l selftest -d ata
env.smartpath /usr/sbin/smartctl

If I call smartctl with the same options in the shell,
I get:

0 for
smartctl -H -i -c -l error -l selftest -l selective \
-d ata /dev/hda; echo $?

216 for
smartctl -H -i -c -l error -l selftest \
-d ata /dev/hdb; echo $? 

Is this a bug or could I have made an error during 
installation?

I use:
munin-1.2.3-4.noarch.rpm
munin-node-1.2.3-4.noarch.rpm
rrdtool-1.0.49-5.fc4.i386.rpm
perl-HTML-Template-2.7-3.noarch.rpm
perl-Net-Server-0.87-4.noarch.rpm
perl-5.8.6-15

on Fedora Core 4

I will have to finish the article today and hope it is 
possible to clear the situation within the next 16 hours..

Can you help?

Cheers,
Gabriele