I don't think it actually depends on Glance, as backup as instance snapshot is only one of options available for backups. As then there is option of leveraging cinder-backup as well, or, you can try using backup of file system (though it's likely not working as expected today - at least I didn't test it so far at all).

But the glance is not dependent on RabbitMQ, except we're talking about notifications.

Yes, scheduler/agent are deployed together, and, at the moment, it's indeed assumed to be run by clients.

There is an active work going to fix that with [1], which should be implemented by 2026.1 for sure.

[1] https://specs.openstack.org/openstack/freezer-specs/specs/2025.1/approved/centralized-scheduler.html

On Sun, 17 Aug 2025, 03:21 Nguyễn Hữu Khôi, <nguyenhuukhoinw@gmail.com> wrote:

I have some questions:

Freezer depends on Glance to create images then download them and It will lead to bottle neck(data transfer, rabbimq,,,). If there are thousands of backups or restores. Would we consider it?

I installed Freezer and I am confused about whether Agent and Scheduler will be installed by clients? It sees docs mentioning they are on the client side.

Nguyen Huu Khoi

On Sun, Aug 17, 2025 at 1:14 AM Dmitriy Rabotyagov <noonedeadpunk@gmail.com> wrote:

Hey,

Yes, this is the bug tracker.

Regarding S3 there is WIP patch intended to fix it. I will check the state of it next Monday or Tuesday.

Regarding rest - please report bugs indeed, that would be extremely helpful!

On Sat, 16 Aug 2025, 19:10 Nguyễn Hữu Khôi, <nguyenhuukhoinw@gmail.com> wrote:

Hello.

How can I contact the Freezer team to report bugs and discuss something? I still can report https://bugs.launchpad.net/freezer/ right?

Currently I cannot backup via s3 driver and I can back up via ssh but cannot restore so I would like to report bugs,

Nguyen Huu Khoi

On Sat, Aug 16, 2025 at 7:22 AM Nguyễn Hữu Khôi <nguyenhuukhoinw@gmail.com> wrote:

I am glad when hearing from you, I will try it.

Nguyen Huu Khoi

On Fri, Aug 15, 2025 at 9:27 PM Dmitriy Rabotyagov <noonedeadpunk@gmail.com> wrote:

Freezer is not really abandoned.

We are currently working on it and to bring it up to par with desired state.

While there are still bugs here and there, core functionality should be working and CI is passing.

But indeed there are quite some areas for improvements wrt Freezer, so in case you wanna try it out or collaborate on future development - that is appreciated.

On Fri, 15 Aug 2025, 16:18 Nguyễn Hữu Khôi, <nguyenhuukhoinw@gmail.com> wrote:

Hello.

I am curious that why dont have a complete backup solution for Openstack. I used Cinder backup but It cannot schedule time to backup and wont display how long to complete backup. I found Freezer and Raksha but it was abadonned.

Currently, we use Ceph and do snapshot and rbd export to backup Ceph volumes.

Nguyen Huu Khoi