iostat_ios - Show IO-operation latency pr. device.
Any Linux system
Link this into @@CONFDIR@@/plugins/ and restart the munin-node.
The plugin shows the average time a IO-operation needs to complete for each disk or block device on the system.
Simple partitioned disks will only show as the whole disk. When/if you use some device layer over that, such as LVM then LV devices will show up individualy.
When the IO-operation time here increases it is to be expected that the iowait on the CPU graph increases, but please read about how iowait reporting works to fully understand that number.
#%# family=legacy #%# capabilities=autoconf
Should show more useful device names/labels for device-mapper devices, such as those used by LVM and so on.
(C) 2004 Per Buer. Documentation and some modifications by Nicolai Langfeldt.