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Bug 358841

Summary: bind connections from known local address when using TCP
Product: Red Hat Enterprise Linux 5 Reporter: David Teigland <teigland>
Component: kernelAssignee: David Teigland <teigland>
Status: CLOSED ERRATA QA Contact: Cluster QE <mspqa-list>
Severity: low Docs Contact:
Priority: low    
Version: 5.1CC: ccaulfie, dzickus, lhh
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHBA-2008-0314 Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2008-05-21 14:59:49 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:
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Description Flags
Proposed patch. none

Description David Teigland 2007-10-30 18:39:47 UTC 
Description of problem:

"A common problem occurs when multiple IP addresses within the same 
subnet are assigned to the same NIC.  If we make a connection attempt to
another address on the same subnet as one of those addresses, the
connection attempt will not necessarily be routed from the address we
want.

In the case of the DLM, the other nodes will quickly drop the connection
attempt, causing problems.

This patch makes the DLM bind to the local address it acquired from the   
cluster manager when using TCP prior to making a connection, obviating
the need for administrators to "fix" their systems or use clever routing
tricks." -- lhh

Version-Release number of selected component (if applicable):


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Additional info:
Comment 1 Lon Hohberger 2007-10-30 19:11:28 UTC 
Created attachment 243831 [details]
Proposed patch.
Comment 2 Lon Hohberger 2007-10-30 19:12:44 UTC 
Patch is against Steve Whitehouse's git repo.
Comment 3 David Teigland 2007-11-29 16:24:07 UTC 
Upstream commit
http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/steve/gfs2-2.6-nmw.git;a=commitdiff;h=614a0b09d5f4c97f53be90af05d44a7d1a66ec06
Comment 4 David Teigland 2007-11-29 16:34:44 UTC 
posted to rhkernel
http://post-office.corp.redhat.com/archives/rhkernel-list/2007-November/msg00633.html
Comment 5 RHEL Program Management 2007-11-29 16:45:37 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 7 Don Zickus 2007-12-17 19:37:15 UTC 
in 2.6.18-61.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5
Comment 10 errata-xmlrpc 2008-05-21 14:59:49 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2008-0314.html