Add layout for telegraf's system diskio plugin #779
Merged
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diskio are counters that give the total reads/writes since a system reboot.
Fix #776
The problem
Layout for telegraf's diskio needed.
Telegraf does not have documentation about diskio, but, it uses github.com/shirou/gopsuti/disk. In turn
disk_linux.go
uses/proc/diskstats
./proc/diskstats
are documented hereThe Solution
Because the stats are long running counters, I'm using
non_negative_derivative
. Additionally, I'm scaling the queries from bytes to megabytes. Finally, I'm grouping by the name of the device.