probe::nfsd.read — NFS server reading data from a file for client
nfsd.read
fh
file handle (the first part is the length of the file handle)
file
argument file, indicates if the file has been opened.
size
read bytes
client_ip
the ip address of client
count
read bytes
vlen
read blocks
offset
the offset of file
vec
struct kvec, includes buf address in kernel address and length of each buffer