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 at 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 at 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 at openstack ~(keystone_admin)]# openstack image save --file ~/image.test.qcow2 b9e3326f-3904-43d9-b0ab-fcc4a1ea04a6
[root at 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.sb at garvan.org.au<mailto:manuel.sb at garvan.org.au>
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