Difference between revisions of "AutoCreateBootVolumes"
| Line 8: | Line 8: | ||
== Release Note == | == Release Note == | ||
| − | When this is implemented, VM will use auto-created volumes as root and local(defined on flovor 'local_gb'). The 'auto_create_boot_volumes' flag should be True to tragger this logic. | + | When this is implemented, VM will use auto-created volumes as root and local(defined on flovor 'local_gb'). |
| + | |||
| + | The 'auto_create_boot_volumes' flag should be True to tragger this logic. | ||
== Rationale == | == Rationale == | ||
| Line 38: | Line 40: | ||
== Implementation == | == Implementation == | ||
| − | + | * nova.conf | |
| + | add 'auto_create_boot_volumes' flag and set it True | ||
| + | * compute node | ||
| + | ** Compute Manager should call Volume Manager to create volumes on boot time. | ||
| + | ** Virt Driver should copy the OS images to the root volume. | ||
| + | ** Virt Driver should inject ssh key or files into the root volume. | ||
| − | |||
=== Code Changes === | === Code Changes === | ||
TBD Code changes should include an overview of what needs to change, and in some cases even the specific details. | TBD Code changes should include an overview of what needs to change, and in some cases even the specific details. | ||
| Line 47: | Line 53: | ||
TBD Include: | TBD Include: | ||
| − | * | + | * When 'auto_create_boot_volumes' is added on nova.conf, |
| − | * | + | * the cached images have to be deleted. in common case, it's '/var/lib/nova/instances/_base/...' |
| − | * | + | * to synchronize the size between volume and image. |
== Test/Demo Plan == | == Test/Demo Plan == | ||
Revision as of 04:28, 24 October 2011
- Launchpad Entry: NovaSpec:auto-create-boot-volumes
- Created: 2011-Oct-24
- Contributors: Dan Kim
Summary
Support Creating EBS boot volumes when boot-time
Release Note
When this is implemented, VM will use auto-created volumes as root and local(defined on flovor 'local_gb').
The 'auto_create_boot_volumes' flag should be True to tragger this logic.
Rationale
With BootFromVolume blueprint, we can use a volume as root like EC2 supports EBS-based volume.
But it needs pre-created and pre-os-installed volumes.
With this blueprint, There's no need the pre-created volume.
Below steps will be added.
1) create volumes using volume-manager on boot time.
2) copy cached OS image into the root volume device.
3) inject ssh key or metadata or files into the root volume device if it needs.
User stories
- Administrator will set 'auto_create_boot_volumes' flag to True.
- User will see instances booted with volumes attached.
Assumptions
For root volume support, the following blueprints are assumed.
Design
File:AutoCreateBootVolumes$auto create boot volume concept.png
Implementation
- nova.conf
add 'auto_create_boot_volumes' flag and set it True
- compute node
- Compute Manager should call Volume Manager to create volumes on boot time.
- Virt Driver should copy the OS images to the root volume.
- Virt Driver should inject ssh key or files into the root volume.
Code Changes
TBD Code changes should include an overview of what needs to change, and in some cases even the specific details.
Migration
TBD Include:
- When 'auto_create_boot_volumes' is added on nova.conf,
- the cached images have to be deleted. in common case, it's '/var/lib/nova/instances/_base/...'
- to synchronize the size between volume and image.
Test/Demo Plan
This need not be added or completed until the specification is nearing beta.
Unresolved issues
TBD
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.
