Open Stack

Hi,

I would like to get opinions on whether we should allow multiple instances to be booted from a single volume.

This is incorrectly allowed currently, the same volume seems to get attached to each instance and the instances boot to Active status.
More details can be seen in description of the bug https://bugs.launchpad.net/nova/+bug/1087253.

Ideally, the best way to achieve this would be pass a list of block device mappings equal to the number of instances requested,
changes going in to the Nova API code.
Is it more feasible to restrict more than one instance to be passed with a single block device mapping, or accept a list of BDMs?

Regards,
Rohit


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