Open Stack

So here is my best guess.
Could be that I am missing this patch ?

https://github.com/openstack/cinder/commit/6211d8fa2033c2a607c20667110c5913cf60dd53

proto at controller:~$ apt-cache policy python-cinder
python-cinder:
  Installed: 1:2014.2.3-0ubuntu1.1~cloud0
  Candidate: 1:2014.2.3-0ubuntu1.1~cloud0


Thanks

Saverio



2015-11-12 16:25 GMT+01:00 Saverio Proto <zioproto at gmail.com>:
> Hello there,
>
> I am investigating why my cinder is slow deleting volumes.
>
> you might remember my email from few days ago with subject:
> "cinder volume_clear=zero makes sense with rbd ?"
>
> so it comes out that volume_clear has nothing to do with the rbd driver.
>
> cinder was not guilty, it was really ceph rbd slow itself to delete big volumes.
>
> I was able to reproduce the slowness just using the rbd client.
>
> I was also able to fix the slowness just using the rbd client :)
>
> This is fixed in ceph hammer release, introducing a new feature.
>
> http://www.sebastien-han.fr/blog/2015/07/06/ceph-enable-the-object-map-feature/
>
> Enabling the object map feature rbd is now super fast to delete large volumes.
>
> However how I am in trouble with cinder. Looks like my cinder-api
> (running juno here) ignores the changes in my ceph.conf file.
>
> cat cinder.conf | grep rbd
>
> volume_driver=cinder.volume.drivers.rbd.RBDDriver
> rbd_user=cinder
> rbd_max_clone_depth=5
> rbd_ceph_conf=/etc/ceph/ceph.conf
> rbd_flatten_volume_from_snapshot=False
> rbd_pool=volumes
> rbd_secret_uuid=secret
>
> But when I create a volume with cinder, The options in ceph.conf are ignored:
>
> cat /etc/ceph/ceph.conf | grep rbd
> rbd default format = 2
> rbd default features = 13
>
> But the volume:
>
> rbd image 'volume-78ca9968-77e8-4b68-9744-03b25b8068b1':
>     size 102400 MB in 25600 objects
>     order 22 (4096 kB objects)
>     block_name_prefix: rbd_data.533f4356fe034
>     format: 2
>     features: layering
>     flags:
>
>
> so my first question is:
>
> does anyone use cinder with rbd driver and object map feature enabled
> ? Does it work for anyone ?
>
> thank you
>
> Saverio