Hi all, I need to move an instance from one openstack environment to another so I tried:
1. Create an image from an instance
2. Save the image to a file
3. Copy create a new instance on another openstack using the new image
file
My problem is that the new image has 0 as image size.
openstack server image create --wait --name rstudio-image
41efac18-a33b-4aed-858b-764639f5e183
+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value
|
+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| checksum | d41d8cd98f00b204e9800998ecf8427e
|
| container_format | bare
|
| created_at | 2017-09-22T02:09:41Z
|
| disk_format | qcow2
|
| file | /v2/images/b9e3326f-3904-43d9-b0ab-fcc4a1ea04a6/file
|
| id | b9e3326f-3904-43d9-b0ab-fcc4a1ea04a6
|
| min_disk | 700
|
| min_ram | 0
|
| name | rstudio-image
|
| owner | d58cf22d960e4de49b71658aee642e94
|
| properties | base_image_ref='', bdm_v2='True',
block_device_mapping='[{"guest_format": null, "boot_index": 0,
"delete_on_termination": true, "no_device": null, "snapshot_id":
"cd04e4a9-d2db-4aaa-ba63-b85c31df6f1c", "device_name": "/dev/vda", |
| | "disk_bus": "virtio", "image_id": null, "source_type":
"snapshot", "tag": null, "device_type": "disk", "volume_id": null,
"destination_type": "volume", "volume_size": 700}]',
root_device_name='/dev/vda' |
| protected | False
|
| schema | /v2/schemas/image
|
| size | 0
|
| status | active
|
| tags |
|
| updated_at | 2017-09-22T02:09:42Z
|
| virtual_size | None
|
| visibility | private
|
+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
[root@openstack ~(keystone_admin)]# openstack image list
+--------------------------------------+---------------+--------+
| ID | Name | Status |
+--------------------------------------+---------------+--------+
| b9e3326f-3904-43d9-b0ab-fcc4a1ea04a6 | rstudio-image | active |
| 212e5126-3d93-417c-9c41-8e198d1b90fb | ubuntu16.04 | active |
| d40cef94-f3cd-495b-91f9-22a11a6f35c7 | cirros | active |
| 7047b9a6-f0a2-415a-8ea7-af834146260f | centos7 | active |
+--------------------------------------+---------------+--------+
[root@openstack ~(keystone_admin)]# openstack image show
b9e3326f-3904-43d9-b0ab-fcc4a1ea04a6
+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value
|
+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| checksum | d41d8cd98f00b204e9800998ecf8427e
|
| container_format | bare
|
| created_at | 2017-09-22T02:09:41Z
|
| disk_format | qcow2
|
| file | /v2/images/b9e3326f-3904-43d9-b0ab-fcc4a1ea04a6/file
|
| id | b9e3326f-3904-43d9-b0ab-fcc4a1ea04a6
|
| min_disk | 700
|
| min_ram | 0
|
| name | rstudio-image
|
| owner | d58cf22d960e4de49b71658aee642e94
|
| properties | base_image_ref='', bdm_v2='True',
block_device_mapping='[{"guest_format": null, "boot_index": 0,
"delete_on_termination": true, "no_device": null, "snapshot_id":
"cd04e4a9-d2db-4aaa-ba63-b85c31df6f1c", "device_name": "/dev/vda", |
| | "disk_bus": "virtio", "image_id": null, "source_type":
"snapshot", "tag": null, "device_type": "disk", "volume_id": null,
"destination_type": "volume", "volume_size": 700}]',
root_device_name='/dev/vda' |
| protected | False
|
| schema | /v2/schemas/image
|
| size | 0
|
| status | active
|
| tags |
|
| updated_at | 2017-09-22T02:09:42Z
|
| virtual_size | None
|
| visibility | private
|
+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
[root@openstack ~(keystone_admin)]# openstack image save --file
~/image.test.qcow2 b9e3326f-3904-43d9-b0ab-fcc4a1ea04a6
[root@openstack ~(keystone_admin)]# ll ~/image.test.qcow2
-rw-r--r--. 1 root root 0 Sep 22 12:11 /root/image.test.qcow2
Question 1. Why is the image size 0?
Question 2. Am I doing to the right thing to migrate instances or is there
another process for doing this type of things?
Thank you very much
Manuel Sopena Ballesteros | Big data Engineer
Garvan Institute of Medical Research
The Kinghorn Cancer Centre, 370 Victoria Street, Darlinghurst, NSW 2010
T: + 61 (0)2 9355 5760 | F: +61 (0)2 9295 8507 | E:
manuel...@garvan.org.au<mailto:manuel...@garvan.org.au>
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