[Pacemaker] One direction switchover not working

[Andrew Beekhof]

> On 4 Nov 2014, at 3:46 am, Andrei Borzenkov <arvidjaar at gmail.com> wrote:
> 
> В Mon, 3 Nov 2014 15:05:39 +0530
> Arjun Pandey <apandepublic at gmail.com> пишет:
> 
>> Hi
>> 
>> I have a 2 node CentOS -6.5 based cluster. This being run in active
>> standby mode.
>> When i want to trigger switchover from blackwidow to elektra (using
>> 1.pcs standby blackwidow and 2. pcs unstandby blackwidow) it doesn't
>> work.
> 
> According to log it was half way through promoting on elektra when
> blackwidow returned online
> 
> Nov 03 05:45:25 [5780] elektra        cib:   notice: cib:diff: 	--           <nvpair id="nodes-blackwidow-standby" name="standby" value="on"/>
> 
> and became candidate for master election
> 
> Nov 03 05:46:04 [5785] elektra       crmd:     info: abort_transition_graph: 	te_update_diff:172 - Triggered transition abort (complete=0, node=blackwidow, tag=nvpair, id=status-blackwidow-master-foo, name=master-foo, value=5, magic=NA, cib=0.484.8) : Transient attribute: update
> 
> Unfortunately it does not look like scores are generally logged,
> but /var/lib/pacemaker/pengine/pe-input-167.bz2 should contain some
> more details.

You can always see the scores afterwards by running:

  crm_simulate -sx /var/lib/pacemaker/pengine/pe-input-167.bz2

> 
>> The other direction elektra to blackwidow works correctly.
>> I was comparing the decision of the DC for each of the cases. Based on
>> crm_simulate output it's correct for each case. However after
>> pre-promote i don't get a promote on elektra. Eventually blackwidow
>> comes up and is promoted.  This has been confirmed based on logs.
>> 
>> Attaching logs as well as the the corosync log file from elektra. Can
>> somebody point out why this is happening. The resource agent script
>> for foo does nothing on pre-notify simply logs the notification type
>> and the node on which action was being taken.
>> 
>> I am attaching the pengine comparison output as well as logs for both cases.
>> 
>> Thanks in advance for any pointers.
>> 
>> 
>> Regards
>> Arjun
> 
> 
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