Public bug reported:
When i rebuild an instance with a base image that has no property of
base_image_ref, i find that the instance's system_metadada image_base_image_ref
will be deleted not updated.
Here is the system_metadata of an instance:
$ MariaDB [nova]> select * from instance_system_metadata where instance_uuid =
"f885595b-7b3d-4b5d-a91d-5c894473c9ad";
+---------------------+------------+------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
| created_at | updated_at | deleted_at | id | instance_uuid
| key | value
| deleted |
+---------------------+------------+------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
| 2017-04-17 10:16:07 | NULL | NULL | 111215 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_disk_format | qcow2
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111216 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_container_format | bare
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111217 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_min_ram | 0
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111218 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_min_disk | 20
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111219 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_base_image_ref |
ef9258de-4faa-41d4-809f-8f9a990cb3e2 | 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111220 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_hw_qemu_guest_agent | yes
| 0 |
+---------------------+------------+------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
Now we rebuild this instance choosing a base image.
$ nova rebuild f885595b-7b3d-4b5d-a91d-5c894473c9ad
7ceb073b-6d37-4e0d-91af-ee911e29fc81
$ MariaDB [nova]> select * from instance_system_metadata where instance_uuid =
"f885595b-7b3d-4b5d-a91d-5c894473c9ad";
+---------------------+---------------------+---------------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
| created_at | updated_at | deleted_at | id |
instance_uuid | key | value
| deleted |
+---------------------+---------------------+---------------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
| 2017-04-17 10:16:07 | NULL | NULL | 111215 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_disk_format | qcow2
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111216 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_container_format | bare
| 0 |
| 2017-04-17 10:16:07 | 2017-04-18 06:47:38 | NULL | 111217 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_min_ram | 0
| 0 |
| 2017-04-17 10:16:07 | 2017-04-18 06:47:38 | NULL | 111218 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_min_disk | 20
| 0 |
| 2017-04-17 10:16:07 | 2017-04-18 06:47:38 | 2017-04-18 06:47:38 | 111219 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_base_image_ref |
ef9258de-4faa-41d4-809f-8f9a990cb3e2 | 111219 |
| 2017-04-17 10:16:07 | NULL | NULL | 111220 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_hw_qemu_guest_agent | yes
| 0 |
| 2017-04-18 06:47:42 | NULL | NULL | 111463 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | clean_attempts | 1
| 0 |
+---------------------+---------------------+---------------------+--------+--------------------------------------+---------------------------+--------------------------------------
we can see that the image_min_ram and image_min_disk are updated but the
image_base_image_ref is deleted.
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1683620
Title:
rebuild instance will delete instance's image_base_image_ref
Status in OpenStack Compute (nova):
New
Bug description:
When i rebuild an instance with a base image that has no property of
base_image_ref, i find that the instance's system_metadada image_base_image_ref
will be deleted not updated.
Here is the system_metadata of an instance:
$ MariaDB [nova]> select * from instance_system_metadata where instance_uuid
= "f885595b-7b3d-4b5d-a91d-5c894473c9ad";
+---------------------+------------+------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
| created_at | updated_at | deleted_at | id | instance_uuid
| key | value
| deleted |
+---------------------+------------+------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
| 2017-04-17 10:16:07 | NULL | NULL | 111215 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_disk_format | qcow2
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111216 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_container_format | bare
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111217 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_min_ram | 0
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111218 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_min_disk | 20
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111219 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_base_image_ref |
ef9258de-4faa-41d4-809f-8f9a990cb3e2 | 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111220 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_hw_qemu_guest_agent | yes
| 0 |
+---------------------+------------+------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
Now we rebuild this instance choosing a base image.
$ nova rebuild f885595b-7b3d-4b5d-a91d-5c894473c9ad
7ceb073b-6d37-4e0d-91af-ee911e29fc81
$ MariaDB [nova]> select * from instance_system_metadata where instance_uuid
= "f885595b-7b3d-4b5d-a91d-5c894473c9ad";
+---------------------+---------------------+---------------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
| created_at | updated_at | deleted_at | id |
instance_uuid | key | value
| deleted |
+---------------------+---------------------+---------------------+--------+--------------------------------------+---------------------------+--------------------------------------+---------+
| 2017-04-17 10:16:07 | NULL | NULL | 111215 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_disk_format | qcow2
| 0 |
| 2017-04-17 10:16:07 | NULL | NULL | 111216 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_container_format | bare
| 0 |
| 2017-04-17 10:16:07 | 2017-04-18 06:47:38 | NULL | 111217 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_min_ram | 0
| 0 |
| 2017-04-17 10:16:07 | 2017-04-18 06:47:38 | NULL | 111218 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_min_disk | 20
| 0 |
| 2017-04-17 10:16:07 | 2017-04-18 06:47:38 | 2017-04-18 06:47:38 | 111219 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_base_image_ref |
ef9258de-4faa-41d4-809f-8f9a990cb3e2 | 111219 |
| 2017-04-17 10:16:07 | NULL | NULL | 111220 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | image_hw_qemu_guest_agent | yes
| 0 |
| 2017-04-18 06:47:42 | NULL | NULL | 111463 |
f885595b-7b3d-4b5d-a91d-5c894473c9ad | clean_attempts | 1
| 0 |
+---------------------+---------------------+---------------------+--------+--------------------------------------+---------------------------+--------------------------------------
we can see that the image_min_ram and image_min_disk are updated but the
image_base_image_ref is deleted.
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