Christopher - I tested this issue with the latest master and now I am able to
boot the instance successfully from 0 bytes image which
is internally referring to volume snapshot to boot the instance from it. It is
mentioned that the new image is simply a bucket of properties (particularly the
block device mapping, kernel and ramdisk IDs) with no image data, so I think
this is the reason for no image format here.
** Changed in: nova
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1332560
Title:
Image is created without any format when instance snapshot is created
Status in OpenStack Compute (Nova):
Invalid
Bug description:
When an instance is created using boot from volume, boot from
image(creates a new volume) or boot from volume snapshot(creates a new
volume), and after creating image snapshot from this instance an image
of 0 bytes is created which is neither public nor protected and have
no format defined.
Steps to reproduce using Horizon:
Case 1: Boot instance from volume
1. Go to Project --> Compute --> Volumes and click on 'Create Volume'.
2. Provide volume name, Size and select 'Image' from 'Volume Source'
drop-down and an image from 'Use image as a source' drop-down.
3. Click on 'Create Volume' button and a bootable volume will be created.
4. Go to Project --> Compute --> Instances and click on 'Launch Instance'
button from the top right.
5. Provide instance name, select 'Boot from volume' as 'Instance Boot Source'
and a bootable volume as 'volume'.
6. Click on 'Launch' button.
7. You will be redirected to instance list page.
8. Click on 'Create Snapshot' to create a snapshot of this instance.
9. In this case a new image of 0 bytes and a volume snapshot will be created.
10. You will be redirected to image list where you will see a new image
created with 0 bytes.
11. Neither this image is public nor protected.
12. No format is defined for this image.
Case 2: Boot instance from image(creates a new volume)
1. Go to Project --> Compute --> Instances and click on 'Launch Instance'
button from the top right.
2. Provide instance name, select 'Boot from image(creates a new volume)' as
'Instance Boot Source' and an image from the drop-down.
3. Click on 'Launch' button.
4. A new volume will be created and will be attached to this instance.
5. You will be redirected to instance list page.
6. Click on 'Create Snapshot' to create a snapshot of this instance.
7. In this case a new image of 0 bytes and a volume snapshot will be created.
8. You will be redirected to image list where you will see a new image
created with 0 bytes.
9. Neither this image is public nor protected.
10. No format is defined for this image.
Case 3: Boot instance from volume snapshot(creates a new volume)
1. Go to Project --> Compute --> volumes and click on 'Create Volume' button.
2. Create a bootable volume same as case 1.
3. From volumes list page you will see 'more' button with respect to each
volume.
4. Click on 'more', a drop-down will open, select 'Create Snapshot' from this
drop-down.
5. A snapshot will be created for this volume.
6. Go to Project --> Compute --> Instances and click on 'Launch Instance'
button from the top right.
7. Provide instance name, select 'Boot from image(creates a new volume)' as
'Instance Boot Source' and an image from the drop-down.
8. Click on 'Launch' button.
9. A new volume will be created and will be attached to this instance.
10. You will be redirected to instance list page.
11. Click on 'Create Snapshot' to create a snapshot of this instance.
12. In this case a new image of 0 bytes and a volume snapshot will be created.
13. You will be redirected to image list where you will see a new image
created with 0 bytes.
14. Neither this image is public nor protected.
15. No format is defined for this image.
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