CephBlockDriver
- Launchpad Entry: NovaSpec:https://blueprints.launchpad.net/nova/+spec/ceph-block-driver
- Created: 2010-11-17
- Contributors: Michael Rodriguez, Mike Perez
Summary
Add Ceph block device support to nova.
Release Note
Ceph is a distributed file system which provides a Block Device interface via Qemu.
Rationale
OpenStack needs a Scalable, Reliable Storage Service that can be accessed as a block device over the network to allow quick failover and live migration.
User stories
User would like to have file system images that persist beyond node failure and would like to be able to live migrate a VM without copying any data.
Assumptions
The user have sufficient network capacity to handle the network traffic involved with accessing a block device over the network.
Design
Implementation
This section should describe a plan of action (the "how") to implement the changes discussed. Could include subsections like:
UI Changes
Should cover changes required to the UI, or specific UI that is required to implement this
Code Changes
Code changes should include an overview of what needs to change, and in some cases even the specific details.
Migration
Include:
- data migration, if any
- redirects from old URLs to new ones, if any
- how users will be pointed to the new way of doing things, if necessary.
Test/Demo Plan
This need not be added or completed until the specification is nearing beta.
Unresolved issues
This should highlight any issues that should be addressed in further specifications, and not problems with the specification itself; since any specification with problems cannot be approved.
BoF agenda and discussion
Use this section to take notes during the BoF; if you keep it in the approved spec, use it for summarising what was discussed and note any options that were rejected.
