Hi Garcetto,

Can you provide the details of how you determined that cinder-backup is doing more than 1 operation?

For example, if you launch 10 backup operations, it will show 10 backups being created in ``cinder backup-list`` but it does not mean they are being executed at the same time.

There is a locking mechanism that holds the other requests until one request completes.

So in terms of memory consumption, there will always be 1 backup operation consuming the memory (which is the purpose of this config option i.e. to limit memory consumption).

But that's just an assumption from my side, if there is a real issue somewhere, it would be good to report and we can work on fixing it.

Thanks

Rajat Dhasmana

On Wed, Oct 2, 2024 at 3:36 PM garcetto <garcetto@gmail.com> wrote:

good morning,

  using all-in-one ubuntt 22 lts kolla openstack 2024.1 version.

cinder.conf

"

[DEFAULT]
...

backup_max_operations = 1
backup_workers = 1

...

"

despite this, the cinder-backup container is doing more backups of more istance volumes...why?

thank you.