Public bug reported:
In my env, cinder volume backend is ceph rbd.
# Original instance boot with volume-backend from the image01
$ nova boot --block-device
source=image,id=$image01,dest=volume,size=50,shutdown=remove,bootindex=0
--flavor m1.tiny --nic net-id=$net vm01
# create instance image
$ nova image-create vm01 img-vm04
$ glance image-show img-vm04
+----------------------------------+----------------------------------------------------------------------------------+
| Property | Value
|
+----------------------------------+----------------------------------------------------------------------------------+
| base_image_ref |
|
| bdm_v2 | True
|
| block_device_mapping | [{"image_id": null, "volume_type": null,
"boot_index": 0, "snapshot_id": |
| | "42fea563-9551-4bc3-b3fb-7746e0895158",
"destination_type": "volume", "tag": |
| | null, "source_type": "snapshot",
"device_type": "disk", "guest_format": null, |
| | "device_name": "/dev/vda", "no_device":
null, "delete_on_termination": true, |
| | "volume_size": 100, "disk_bus": "virtio",
"volume_id": null}] |
| boot_roles | reader,admin,member
|
| checksum | d41d8cd98f00b204e9800998ecf8427e
|
| container_format | bare
|
| created_at | 2020-08-11T08:49:32Z
|
| direct_url |
rbd://b7b2fac6-420f-4ec1-aea2-4862d29b4059/volumes/f11d2516-ba1a-4994-b984-d253d
|
| | 1524dab/snap
|
| disk_format | qcow2
|
| hw_rng_model | virtio
|
| id | f11d2516-ba1a-4994-b984-d253d1524dab
|
| locations | [{"url":
"rbd://b7b2fac6-420f-4ec1-aea2-4862d29b4059/volumes/f11d2516-ba1a-4994- |
| | b984-d253d1524dab/snap", "metadata":
{"store": "ceph"}}] |
| min_disk | 1
# Boot new instance with img-vm04
nova boot --block-device
source=image,id=$img04,dest=volume,size=200,shutdown=remove,bootindex=0
--flavor m1.tiny --nic net-id=$net vm05
# root volume size is 50
3ea44251-04cd-4d6c-865d-b868b5faddc4 | in-use | | 50 | ceph-rbd |
true | e21fd39b-ab72-42d1-91d6-f9462685bba8 |
Excepted: volume size is 200
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1891298
Title:
volume_size in bdms cannot work when instance boot with snapshot image
Status in OpenStack Compute (nova):
New
Bug description:
In my env, cinder volume backend is ceph rbd.
# Original instance boot with volume-backend from the image01
$ nova boot --block-device
source=image,id=$image01,dest=volume,size=50,shutdown=remove,bootindex=0
--flavor m1.tiny --nic net-id=$net vm01
# create instance image
$ nova image-create vm01 img-vm04
$ glance image-show img-vm04
+----------------------------------+----------------------------------------------------------------------------------+
| Property | Value
|
+----------------------------------+----------------------------------------------------------------------------------+
| base_image_ref |
|
| bdm_v2 | True
|
| block_device_mapping | [{"image_id": null, "volume_type": null,
"boot_index": 0, "snapshot_id": |
| | "42fea563-9551-4bc3-b3fb-7746e0895158",
"destination_type": "volume", "tag": |
| | null, "source_type": "snapshot",
"device_type": "disk", "guest_format": null, |
| | "device_name": "/dev/vda", "no_device":
null, "delete_on_termination": true, |
| | "volume_size": 100, "disk_bus":
"virtio", "volume_id": null}] |
| boot_roles | reader,admin,member
|
| checksum | d41d8cd98f00b204e9800998ecf8427e
|
| container_format | bare
|
| created_at | 2020-08-11T08:49:32Z
|
| direct_url |
rbd://b7b2fac6-420f-4ec1-aea2-4862d29b4059/volumes/f11d2516-ba1a-4994-b984-d253d
|
| | 1524dab/snap
|
| disk_format | qcow2
|
| hw_rng_model | virtio
|
| id | f11d2516-ba1a-4994-b984-d253d1524dab
|
| locations | [{"url":
"rbd://b7b2fac6-420f-4ec1-aea2-4862d29b4059/volumes/f11d2516-ba1a-4994- |
| | b984-d253d1524dab/snap", "metadata":
{"store": "ceph"}}] |
| min_disk | 1
# Boot new instance with img-vm04
nova boot --block-device
source=image,id=$img04,dest=volume,size=200,shutdown=remove,bootindex=0
--flavor m1.tiny --nic net-id=$net vm05
# root volume size is 50
3ea44251-04cd-4d6c-865d-b868b5faddc4 | in-use | | 50 | ceph-rbd |
true | e21fd39b-ab72-42d1-91d6-f9462685bba8 |
Excepted: volume size is 200
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