Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
probe::nfsd.proc.read - NFS server reading file for client
SYNOPSIS
nfsd.proc.read
VALUES
vec
struct kvec, includes buf address in kernel address and length of each buffer
size
read bytes
count
read bytes
uid
requester's user id
proto
transfer protocol
fh
file handle (the first part is the length of the file handle)
vlen
read blocks
client_ip
the ip address of client
gid
requester's group id
offset
the offset of file
version
nfs version
SEE ALSO
tapset::nfsd(3stap)
SystemTap Tapset Reference March 2016 PROBE::NFSD.PROC(3stap)