NFS probes with centos6.2

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NFS probes with centos6.2

ningchunlei
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[root@hadoopsrv2 ~]# stap --version
Systemtap translator/driver (version 1.6/0.152 non-git sources)
Copyright (C) 2005-2011 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
enabled features: AVAHI LIBRPM LIBSQLITE3 NSS BOOST_SHARED_PTR TR1_UNORDERED_MAP NLS

[root@hadoopsrv2 ~]# lsb_release -a
LSB Version:    :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID: CentOS
Description:    CentOS release 6.2 (Final)
Release:        6.2
Codename:       Final
[root@hadoopsrv2 ~]# uname -a
Linux hadoopsrv2.zhongsou.com 2.6.32-220.el6.x86_64 #1 SMP Tue Dec 6 19:48:22 GMT 2011 x86_64 x86_64 x86_64 GNU/Linux
[root@hadoopsrv2 ~]# rpm -qa | grep kernel
abrt-addon-kerneloops-2.0.4-14.el6.centos.x86_64
libreport-plugin-kerneloops-2.0.5-20.el6.x86_64
kernel-debuginfo-2.6.32-220.el6.x86_64
kernel-firmware-2.6.32-220.el6.noarch
dracut-kernel-004-256.el6.noarch
kernel-headers-2.6.32-220.el6.x86_64
kernel-2.6.32-220.el6.x86_64
kernel-debuginfo-common-x86_64-2.6.32-220.el6.x86_64
kernel-devel-2.6.32-220.el6.x86_64


[root@hadoopsrv2 ~]# stap  -e 'probe module("nfs").function("*") {}'
WARNING: cannot find module nfs debuginfo: No DWARF information found
semantic error: no match while resolving probe point module("nfs").function("*")
Pass 2: analysis failed.  Try again with another '--vp 01' option.


i had install kernel-debuginfo ,but it doesnt work.   i need to setting any environment variable.?

help me !!!