Hi Abhishek, I am running version 2023.1 openstack with Quincy ceph release. On Wed, Jan 24, 2024 at 1:06 PM Eugen Block <eblock@nde.ag> wrote:
You can just flatten the image to make it independent from the parent image. After flattening (rbd flatten) you could sparsify it to get some storage capacity back.
Zitat von Satish Patel <satish.txt@gmail.com>:
Folks,
I have two openstack clouds and both have their own Ceph backend storage.I am trying to migrate instances from openstack A to openstack B.
1. Take a snapshot from A 2. Export snapshot and import to B 3. Create instance on B 4. Delete snapshot - (I am getting error because its in-use)
Because it has a parent reference to that volume. How do I remove the reference so it will let me delete a snapshot. Reason I am asking is because I have so many VMs to migrate and don't want glance to have 100s of entities in those snapshots.
What is the alternative here? I can try qcow2 if that is the final solution to make it clean.
# rbd -p volumes info volume-f2b2aec2-cc57-49e5-aca1-54b5a7ee9f3a rbd image 'volume-f2b2aec2-cc57-49e5-aca1-54b5a7ee9f3a': size 40 GiB in 5120 objects order 23 (8 MiB objects) snapshot_count: 0 id: 5473c827864fed block_name_prefix: rbd_data.5473c827864fed format: 2 features: layering, exclusive-lock, object-map, fast-diff, deep-flatten op_features: flags: create_timestamp: Fri Jan 19 19:03:25 2024 access_timestamp: Wed Jan 24 15:51:04 2024 modify_timestamp: Wed Jan 24 15:52:40 2024 parent: images/3708f961-fb74-49f1-ab9b-40cf7954abed@snap overlap: 40 GiB