Bug 236836

Summary: [RHEL5 RT][OPENIB]rdma capability not working with RT kernel.
Product: Red Hat Enterprise MRG Reporter: Gurhan Ozen <gozen>
Component: realtime-kernelAssignee: Doug Ledford <dledford>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 1.0CC: dledford, jburke
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: -35 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-10-02 14:52:56 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 Gurhan Ozen 2007-04-17 21:02:24 UTC 
Description of problem:
  rdma userspace programs can't be run on RT kernel due to kernel abi mismatch:

# ucmatose
librdmacm: kernel ABI version 4 doesn't match library version 2.
failed to create event channel


Version-Release number of selected component (if applicable):
# rpm -qa | grep rdma
librdmacm-utils-0.9.1-5.el5
librdmacm-0.9.1-5.el5
librdmacm-devel-0.9.1-5.el5
# uname -a
Linux dell-pe1950-02.rhts.boston.redhat.com 2.6.20-19.el5rt #1 SMP PREEMPT Mon
Apr 16 12:14:21 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux


How reproducible:
Very

Steps to Reproduce:
1. Boot into RT kernel with a system that has infiniband hardware and try to run
ucmatose 
2.
3.
  
Actual results:


Expected results:


Additional info:
Comment 1 Doug Ledford 2007-07-10 20:53:03 UTC 
This is resolved by using the openib-1.2-1.el5 packages.
Comment 2 Doug Ledford 2007-07-10 21:31:33 UTC 
openib-1.2-1.el5 has been tagged into dist-5E-rt which means they'll get picked
up in the next rhel-rt compose.
Comment 3 Gurhan Ozen 2007-08-13 21:00:40 UTC 
Verified with -35:
[root@dell-pe1950-02 ~]# ucmatose -b 192.168.1.10 
cmatose: starting server
initiating data transfers
completing sends
receiving data transfers
data transfers complete
cmatose: disconnecting
disconnected
test complete
return status 0
[root@dell-pe1950-02 ~]# uname -a
Linux dell-pe1950-02.rhts.boston.redhat.com 2.6.21-35.el5rt #1 SMP PREEMPT RT
Thu Jul 26 11:59:02 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux