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/var/lib/pcp/config/pmchart/NFS2 is in pcp-gui 1.5.11.

This file is owned by root:root, with mode 0o644.

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#kmchart
version 1

chart title "NFS2 Calls [%h]" style plot 
	plot legend "client" metric nfs.client.calls
	plot legend "server" metric nfs.server.calls