[Pacemaker] [Problem] Order which combined a master with clone is invalid.

[Andrew Beekhof]

On Mon, Jul 23, 2012 at 9:43 AM,  <renayama19661014 at ybb.ne.jp> wrote:
> Hi David,
>
> Thank you for comments.
>
>> http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/ch06s03s02.html
>
> I confirmed it in INFINITY.
>
> (snip)
>       <rsc_colocation id="rsc_colocation-1" rsc="msDrPostgreSQLDB" rsc-role="Master" score="INFINITY" with-rsc="clnPingd"/>
>       <rsc_order first="clnPingd" id="rsc_order-1" score="INFINITY" symmetrical="false" then="msDrPostgreSQLDB"/>
> (snip)
>
>
> By the start only for Master nodes, it was controlled well.
>
> [root at drbd1 ~]# crm_mon -1 -f
> ============
> Last updated: Mon Jul 23 08:24:38 2012
> Stack: Heartbeat
> Current DC: NONE
> 1 Nodes configured, unknown expected votes
> 2 Resources configured.
> ============
>
> Online: [ drbd1 ]
>
>
> Migration summary:
> * Node drbd1:
>    prmPingd:0: migration-threshold=1 fail-count=1000000
>
> Failed actions:
>     prmPingd:0_start_0 (node=drbd1, call=4, rc=1, status=complete): unknown error
>
>
> However, the problem occurs when I send cib after the Slave node started together.
>
> ============
> Last updated: Mon Jul 23 08:35:41 2012
> Stack: Heartbeat
> Current DC: drbd2 (6d4b04de-12c0-499a-b388-febba50eaec2) - partition with quorum
> Version: 1.0.12-unknown
> 2 Nodes configured, unknown expected votes
> 2 Resources configured.
> ============
>
> Online: [ drbd1 drbd2 ]
>
>  Master/Slave Set: msDrPostgreSQLDB
>      Masters: [ drbd2 ]
>      Slaves: [ drbd1 ] -------------------------------> Started and Status Slave.

Yep, looks like a bug.  I'll follow up on the bugzilla.

>  Clone Set: clnPingd
>      Started: [ drbd2 ]
>      Stopped: [ prmPingd:0 ]
>
> Migration summary:
> * Node drbd1:
>    prmPingd:0: migration-threshold=1 fail-count=1000000
> * Node drbd2:
>
> Failed actions:
>     prmPingd:0_start_0 (node=drbd1, call=4, rc=1, status=complete): unknown error
>
> Best Regards,
> Hideo Yamauchi.
>
>
>
> --- On Sat, 2012/7/21, David Vossel <dvossel at redhat.com> wrote:
>
>>
>>
>> ----- Original Message -----
>> > From: renayama19661014 at ybb.ne.jp
>> > To: "PaceMaker-ML" <pacemaker at oss.clusterlabs.org>
>> > Sent: Friday, July 20, 2012 1:39:51 AM
>> > Subject: [Pacemaker] [Problem] Order which combined a master with clone is    invalid.
>> >
>> > Hi All,
>> >
>> > We confirmed movement of order which combined a master with clone.
>> > We performed it by a very simple combination.
>> >
>> > Step1) We change it to produce start error in Dummy resource.
>> >
>> > (snip)
>> > dummy_start() {
>> > return $OCF_ERR_GENERIC
>> >     dummy_monitor
>> > (snip)
>> >
>> > Step2) We start one node and send cib.
>> >
>> >
>> > However, as for the master, it is done start even if start of clone
>> > fails.
>> > And it becomes the Slave state.
>>
>> Not a bug,  You are using advisory ordering in your order constraint.
>>
>> http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/ch06s03s02.html
>>
>> >
>> > ============
>> > Last updated: Fri Jul 20 15:36:10 2012
>> > Stack: Heartbeat
>> > Current DC: NONE
>> > 1 Nodes configured, unknown expected votes
>> > 2 Resources configured.
>> > ============
>> >
>> > Online: [ drbd1 ]
>> >
>> >  Master/Slave Set: msDrPostgreSQLDB
>> >      Slaves: [ drbd1 ]
>> >      Stopped: [ prmDrPostgreSQLDB:1 ]
>> >
>> > Migration summary:
>> > * Node drbd1:
>> >    prmPingd:0: migration-threshold=1 fail-count=1000000
>> >
>> > Failed actions:
>> >     prmPingd:0_start_0 (node=drbd1, call=4, rc=1, status=complete):
>> >     unknown error
>> >
>> >
>> > We confirmed it just to make sure in Pacemaker1.1.7.
>> > However, the problem was the same.
>> >
>> > ============
>> > Last updated: Fri Jul 20 22:53:22 2012
>> > Last change: Fri Jul 20 22:53:09 2012 via cibadmin on fedora17-1
>> > Stack: corosync
>> > Current DC: fedora17-1 (1) - partition with quorum
>> > Version: 1.1.7-e6922a70f742d3eab63d7e22f3ea0408b54b5dae
>> > 1 Nodes configured, unknown expected votes
>> > 4 Resources configured.
>> > ============
>> >
>> > Online: [ fedora17-1 ]
>> >
>> >  Master/Slave Set: msDrPostgreSQLDB [prmDrPostgreSQLDB]
>> >      Slaves: [ fedora17-1 ]
>> >      Stopped: [ prmDrPostgreSQLDB:1 ]
>> >
>> > Migration summary:
>> > * Node fedora17-1:
>> >    prmPingd:0: migration-threshold=1 fail-count=1000000
>> >
>> > Failed actions:
>> >     prmPingd:0_start_0 (node=fedora17-1, call=14, rc=1,
>> >     status=complete): unknown error
>> >
>> >
>> > I think that this problem is similar to the bug that I reported
>> > before.
>> >
>> >  * http://bugs.clusterlabs.org/show_bug.cgi?id=5075.
>> >
>> > Is this problem a bug?
>> > Or can we be improved by setting?
>>
>> see advisory ordering
>>
>> >
>> > Best Regards,
>> > Hideo Yamauchi.
>> >
>> >
>> > _______________________________________________
>> > Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>> > http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>> >
>> > Project Home: http://www.clusterlabs.org
>> > Getting started:
>> > http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>> > Bugs: http://bugs.clusterlabs.org
>> >
>>
>
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