*** This bug is a duplicate of bug 1868996 ***
https://bugs.launchpad.net/bugs/1868996
** This bug has been marked a duplicate of bug 1868996
Unable to swap between RBD volumes using virDomainBlockRebase
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https://bugs.launchpad.net/bugs/1858402
Title:
In-use volume does not support the same ceph cluster retype
Status in OpenStack Compute (nova):
New
Bug description:
Description：
Ceph storage supports different types of disks, including SATA, SAS, and
SSD, which are divided into SATA SSD and NVME.In the production, disks with
different media are divided into different pools. In cinder, there should be
different volume types. The corresponding service products are ordinary cloud
disk, efficient cloud disk and SSD disks.Switch normal cloud disk to efficient
cloud disk according to business requirements, so that data can be migrated in
real time between different pools without data loss.
The current Openstack environment does not support the retype
(cross-pool) operation of the volume of in-use state in the ceph cluster.
Libvrit does not provide a data migration interface. When rebase, the storage
type of ceph is not supported, and the cinder-api does not support the retype
operation of the volume of in-use state.
Environment：
1. openstack-Queens
2. hypervisor: Libvirt + KVM
3. storage type : Ceph
4.Cinder concatenates different pools
Cinder creates the volume type of the corresponding pool
cinder extra-specs-list
+--------------------------------------+-----------+--------------------------------------+
| ID | Name | extra_specs
|
+--------------------------------------+-----------+--------------------------------------+
| 008d4021-8010-43b5-8667-ba028ee74fe9 | ceph-test | {'volume_backend_name':
'ceph-test'} |
| 50a3919c-e722-4a1e-aa42-c8b1303320f9 | ceph | {'volume_backend_name':
'ceph'} |
+--------------------------------------+-----------+--------------------------------------+
Do the below test：
1.Create instance and volume
2.Attach the volume to the server
3.Execute retype: cinder retype test-retype ceph-test --migration-policy
on-demand
Actual result：
Pool hasn't changed
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