Hi Neil,
Is there a way to completely reinitialize a virtualdatabase
to an empty state?
The best way is to use the 'initialize' command and re-populate the
cluster from a selected node. This is similar to the cluster
initialization procedure or procedure to recover from a complete cluster
outage
(http://sequoia.continuent.org/doc/infocenter/topic/org.continuent.sequoia.doc/html/Activating_the_cluster.html)
It is good enough to stop the controllers and delete
all the tables from the backend databases?
No, you need to cleanup the virtual database recovery log. This is what
the 'initialize' command does basically.
You can drop the recovery log database manually if you wish to do that
manually.
Hope this helps,
Emmanuel
--
Emmanuel Cecchet
Chief Scientific Officer, Continuent
Blog: http://emanux.blogspot.com/
Open source: http://www.continuent.org
Corporate: http://www.continuent.com
Skype: emmanuel_cecchet
Cell: +33 687 342 685
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