Cinder/blueprints/multi-attach-volume
< Cinder
[ DRAFT ]
- Launchpad Entry: https://blueprints.launchpad.net/cinder/+spec/multi-attach-volume
- Created: 25th November 2013
- Contributors: Kurt Martin, Zhi Yan Liu, Stephen Gordon
Summary
Currently the Block Storage (Cinder) service only allow a volume to be attached to one instance at a time. The Compute Service (Nova) also makes assumptions in a number of places to this effect as do the APIs, CLIs, and UIs exposed to users. This specification is drafted in support of multi-attach-volume and aims to outline the changes required to allow users to share volumes between multiple guests using either read-write or read-only attachments.
Comments from a previous proposal to this effect (shared-volume) were also taken into consideration.