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Bug 594079

Summary: systemtap cannot probe 'scsi.ioentry'
Product: Red Hat Enterprise Linux 6 Reporter: Jeff Bastian <jbastian>
Component: systemtapAssignee: Frank Ch. Eigler <fche>
Status: CLOSED CURRENTRELEASE QA Contact: Petr Muller <pmuller>
Severity: high Docs Contact:
Priority: medium    
Version: 6.0CC: mjw, ohudlick, pmuller, syeghiay, tao
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: systemtap-1.2-3.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-07-02 19:54:28 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Jeff Bastian 2010-05-20 14:00:09 UTC
Description of problem:
The scsi.ioentry event never fires on RHEL 6.0.

Version-Release number of selected component (if applicable):
kernel-2.6.32-25.el6.x86_64
systemtap-1.2-1.el6.x86_64

How reproducible:
every time

Steps to Reproduce:
1. stap -e 'probe scsi.ioentry { print("scsi.ioentry fired\n") }'
2. hurry up and wait
  
Actual results:
it never prints any "scsi.ioentry fired" messages

Expected results:
it should print "scsi.ioentry fired" fairly often and rapidly

Additional info:
This works fine on RHEL 5.5

Comment 2 Frank Ch. Eigler 2010-05-21 17:34:43 UTC
upstream systemtap commit #6fa8e03 appears to correct this; ready for backporting.

Comment 6 releng-rhel@redhat.com 2010-07-02 19:54:28 UTC
Red Hat Enterprise Linux Beta 2 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.