Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
probe::nfs.proc.read - NFS client synchronously reads file from server
SYNOPSIS
nfs.proc.read
VALUES
server_ip
IP address of server
count
read bytes in this execution
version
NFS version
flags
used to set task->tk_flags in rpc_init_task function
offset
the file offset
prot
transfer protocol
DESCRIPTION
All the nfs.proc.read kernel functions were removed in kernel commit 8e0969 in December 2006, so these
probes do not exist on Linux 2.6.21 and newer kernels.
SystemTap Tapset Reference March 2016 PROBE::NFS.PROC.(3stap)