On 5/14/20 1:27 PM, Kees Meijs wrote:
Thank you very much. That's a good question.
The implementations of OpenStack and Ceph and "the other" OpenStack and Ceph are, apart from networking, completely separate.
Actually I was thinking you perform OpenStack and Ceph upgrade, not migration to other OpenStack and other Ceph. If downtime is acceptable I will suggest to use `qemu-img convert` instead rbd import/export, because: * this copy from one cluster to another; * speed up-to 3Gbit/s (my maximum from qemu network stack in 2018); qemu-img convert -m 16 -W -p -n -f raw -O raw \ rbd:<from_your_pool>/<your_volume>:id=cinder:key=<cinder_key>:mon_host=172.16.16.2 \ rbd:<to_your_pool>/<your_volume>:id=cinder:key=<cinder_key>:mon_host=172.16.17.2 k