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Bug 633983 - Luci does not handle parameter "nodename" related to fence_scsi fence agent correctly
Summary: Luci does not handle parameter "nodename" related to fence_scsi fence agent c...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: luci
Version: 6.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Ryan McCabe
QA Contact: Cluster QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-09-14 20:13 UTC by Jan Pokorný [poki]
Modified: 2016-04-26 14:00 UTC (History)
3 users (show)

Fixed In Version: luci-0.23.0-1.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-05-19 13:56:25 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:0655 0 normal SHIPPED_LIVE luci bug fix update 2011-05-19 09:47:45 UTC

Description Jan Pokorný [poki] 2010-09-14 20:13:31 UTC 
Description of problem:
In connection with bug #633567, it was discovered that Luci currently treats "nodename" parameter for fence_scsi fence agent as "global" per its device instance (i.e. it is by "fencedevice" xml-node in cluster.conf), instead of node-local one (i.e. by "device" xml-node).

In addition, there are two related problems that should be fixed as well:

A. on RHEL5(4), this parameter served cluster for specific reason and it was expected (and as I verified, this rule had no exception) that its value is the same as the name of the respective node ("clusternode" xml-node, attribute "name"), see http://sources.redhat.com/cluster/wiki/SCSI_FencingConfig_RHEL5
- Luci currently handles this parameter as user-configurable, which can lead to problems when the stated rule is broken -> this logic should be applied automatically in silence without giving user a chance to modify it in Luci

B. for RHEL6-based cluster, setting "nodename" parameter can be omitted, because in this case (and only in this case!), mentioned rule is applied implicitly by the logic of fence components (fenced)
- to keep cluster.conf as "clean" as possible, it would be a good idea to choose omitting this parameter (note: once "nodename" parameter present by "device" xml-node under "fence" - "method" section, it ought to be present also by "device" xml-node under "unfence" section for particular node)
Comment 3 Jan Pokorný [poki] 2010-09-15 21:33:18 UTC 
This should be fixed as of http://git.fedorahosted.org/git/?p=luci.git;a=commit;h=51c43365b959ca2ac8e4356575713e41e13c8484
Comment 10 Brian Brock 2011-02-24 19:34:25 UTC 
fix verified in luci-0.23.0-4

the <fencedevice> name parameter is set during element creation, and matches the <fence><method><device name=""> parameter selected from a drop-down list.
Comment 11 errata-xmlrpc 2011-05-19 13:56:25 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 therefore 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-2011-0655.html
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