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<pre>Hello Andrei,
I'm sorry for the confusion. I will try to point everything out more specific.
<b>>>Andrei Borzenkov</b>
<i>>>Thu Apr 13 15:24:38 EDT 2023
</i>In this Message you tested the behavior of my thread.
>>OK, I compared CIB and the difference is that non-working case has
>>explicit "start" action in order constraint. I.e.
>>order drbd_vm_after_drbd_fs Mandatory: ms-drbd_fs:promote drbd_vm:start
>>After I added it back I get the same failed "demote" action.
So i anticipated that the fix is to dismiss the Action <start> for the drbd_vm.
I tested it and live migration on <node standby> worked.
I also tested cluster behavior on startup. No problems here.
As i wrote in
>><i>Fri Apr 14 03:25:24 EDT 2023:
</i>>>I am new to this Mailing list, so I am not sure if I have to mark it as fixed.
>>Also I hope that I used the Mailing List correctly as I didn't really reply to answers. Instead I wrote new Mails to <a href="https://lists.clusterlabs.org/mailman/listinfo/users">users at ...</a> with the topic in CC.
I am not quite sure if I respond to answers correctly. I am sorry for the confusion.
Finally can you also react to this question please.
>><i> Can you elaborate a little bit more on the behavior of the order constraint in the case where it is not working? [@Andrei Borzenkov]
</i>><i>> I failed to completely understand your explanation.
</i>Your explanation was:
>><i>Thu Apr 13 15:50:34 EDT 2023
</i>>>The default is the value of "first-action" so with "start"
>>it ordered two "promote" actions which does nothing. So we are back at
>>square one - if there is ordering constraint against master/slave.
I would like to know if the order constraint <order drbd_vm_after_drbd_fs Mandatory: ms-drbd_fs:promote drbd_vm>
is equivalent to: "First promote ms-drbd_fs then start drbd_vm". If so my problem would be fixed.
Thanks for the help.
With kind regards
Philip.
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