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https://forge.continuent.org/jira/browse/SEQUOIA-737?page=comments#action_13837 
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Marc Herbert commented on SEQUOIA-737:
--------------------------------------

Is it so much harder to solve the general case ? (only the last VDB part 
stopped has the right to be started first)


> Allow un-ordered vdb restart in case of global vdb shutdown with no write load
> ------------------------------------------------------------------------------
>
>          Key: SEQUOIA-737
>          URL: https://forge.continuent.org/jira/browse/SEQUOIA-737
>      Project: Sequoia
>         Type: Improvement
>   Components: Core
>     Versions: Sequoia 2.9
>     Reporter: Olivier Fambon
>     Assignee: Olivier Fambon

>
>
> In the general 'complete vdb shutdown' scenario, i.e. when there is (write) 
> load on the system,
> the boot up sequence should be carried out in reverse order from the shutdown 
> sequence.
> That is:
> - shutdown vdb on controller 1
> - shutdown vdb on controller 2
> - load vdb on controller 2
> - load vdb on controller 1
> However, in the special - although likely - case of a complete system shutdown
> that would happen NOT under load, e.g. no clients performing writes on the 
> system,
> or no clients at all, there is technically no good reason to force this 
> reverse order sequence,
> since shutdown checkpoints on both vdb members refer to exactly the same 
> point in the recoverylog time.
> It could be nice to allow un-ordered boot up in this case.

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