Collectd DF plugin doesn't collect NFS filesystem type

[Swann Croiset]

The current collectd configuration doesn't include NFS FSType:

cat /etc/collectd/conf.d/10-df.conf

<Plugin df>
  FSType "ext2"
  FSType "ext3"
  FSType "ext4"
  FSType "xfs"
  IgnoreSelected false
  ReportByDevice false
  ReportInodes true
  ReportReserved true
  ValuesAbsolute true
  ValuesPercentage true
</Plugin>

We may need to add FSType "nfs" (not clear how it's supported [0] and if there is any performance penalty due to network access)

If it doesn't work, another solution would to configure explicitly the devices:
Device "192.168.0.2:/mnt/nfs"

[0] https://collectd.org/wiki/index.php/Plugin:DF