Hi,

On 03/10/2015 09:35 AM, cmsaddress-...@yahoo.co.uk wrote:
> Hi I've recently installed monitorix on a test system and configured the
> disk/fs parts, the graphs for the file system usage appear to be
> displaying correctly however looking at the monitorix log file shows
> there's an issue:
>
> Use of uninitialized value $write_cnt in addition (+) at
> /usr/lib/monitorix/fs.pm line 764.
> Use of uninitialized value $write_sec in addition (+) at
> /usr/lib/monitorix/fs.pm line 765.
[...]

These error messages dosen't help much if you don't provide a complete 
log since Monitorix was started.



>
> The log file is full of lines detailing the same error.
> The relevant section of the config file:
> .....
> <disk>
>          <list>
>                  0 = /dev/sda1, /dev/mapper/centos-root,
> /dev/mapper/centos-home, /dev/mapper/centos-var, /dev/mapper/centos-tmp
>          </list>

The error messages are in 'fs.pm' so, the 'disk' is not relevant here.



>
> <fs>
>          <list>
>                  0 = /, /boot, /var, /home, /tmp
>          </list>
>          <desc>
>                  / = Root Filesystem
>                  /boot = Boot Vol
>                  /home = Home Directory
>                  /var = Logging Dir
>                  /tmp = Temp Dir
>          </desc>
>          <devmap>
>                  / = /dev/mapper/centos-root
>               /boot = /dev/sda1
>                  /var = /dev/mapper/centos-var
>                  /home = /dev/mapper/centos-home
>               /tmp = /dev/mapper/centos-tmp
>          </devmap>
>
> ~$ df -h
> Filesystem               Size  Used Avail Use% Mounted on
> /dev/mapper/centos-root  8.2G  2.4G  5.9G  29% /
> devtmpfs                 913M     0  913M   0% /dev
> tmpfs                    921M     0  921M   0% /dev/shm
> tmpfs                    921M   12M  909M   2% /run
> tmpfs                    921M     0  921M   0% /sys/fs/cgroup
> /dev/mapper/centos-var    20G  849M   19G   5% /var
> /dev/mapper/centos-home  4.9G   33M  4.9G   1% /home
> /dev/sda1                497M  174M  324M  35% /boot
> /dev/mapper/centos-tmp   4.9G   33M  4.9G   1% /tmp
>
> Cheers
>

Why are you mapping each mount point in the <devmap> section? Are you 
doing this because you noticed that Monitorix was unable to detect it 
automatically?

Moreover, if the devices you have mapped are not in the file 
'/proc/diskstats' you are preventing Monitorix to work properly.

Please, remove the lines inside the section <devmap>, restart Monitorix 
and check the log file to see possible error messages during the 
initialization.

Regards.

-- 
Jordi Sanfeliu
FIBRANET Network Services Provider
http://www.fibranet.cat


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