Open Stack

Hi,

Sorry for not being totally clear. The cluster is managed by TripleO. After each deployment/update, the cinder configuration is updated with incorrect names. Currently we correct it manually in the cinder configuration. So it is not only aesthetic.

Sinan

> Op 11 nov. 2019 om 14:48 heeft Gorka Eguileor <geguileo at redhat.com> het volgende geschreven:
> 
>> On 07/11, Sinan Polat wrote:
>> Hi,
>> 
>> I am using Ceph as the backend for Cinder. Within Ceph we have defined 2 RBD
>> pools (ssdvolumes, sasvolumes).
>> In OpenStack I created 2 Volume Types (ssd, sas). Each Volume Type has property
>> "volume_backend_name='tripleo_ceph_<ssd|sas>'".
>> 
>> In the Cinder configuration I have the following backends configured:
>> 
>> [tripleo_ceph_ssd]
>> backend_host=hostgroup
>> volume_backend_name=tripleo_ceph_ssd
>> volume_driver=cinder.volume.drivers.rbd.RBDDriver
>> rbd_ceph_conf=/etc/ceph/ceph.conf
>> rbd_user=openstack
>> rbd_pool=ssdvolumes
>> 
>> [tripleo_ceph_sas]
>> backend_host=hostgroup
>> volume_backend_name=tripleo_ceph_sas
>> volume_driver=cinder.volume.drivers.rbd.RBDDriver
>> rbd_ceph_conf=/etc/ceph/ceph.conf
>> rbd_user=openstack
>> rbd_pool=sasvolumes
>> 
>> As you might have noticed, the backend name (tripleo_ceph_ssd) and the RBD pool
>> name (ssdvolumes, not ssd) does not match. So far, we do not have any problems.
>> But I want to correct the names and I do not want to have the mismatch anymore.
>> 
>> So I want to change the value of key volume_backend_name for both Volume Types
>> (tripleo_ceph_ssd => tripleo_ceph_ssdvolumes).
>> 
> 
> Hi,
> 
> I agree with Sean, I wouldn't change it since this is only aesthetic.
> 
> Having said that, there's always a way to do most things, even if it's
> NOT RECOMMENDED:
> 
> - Update cinder.conf
> - Get the volume type id for the 2 volume types to change
> - Stop cinder services
> - Go into the DB and manually update the volume types changes in the
>  "volume_type_extra_specs" table filtering by the volume_type_id and
>  the key "volume_backend_name" and setting the new "value".
> - Use the "cinder-manage volume update_host" to update existing volumes
>  to the new backend (you could also do this directly in the DB).
> - Start cinder services
> - Remove the old service from the DB (they appear as down now) using the
>  "cinder-manage service remove" command.
> 
> Cinder-manage docs:
>   https://docs.openstack.org/cinder/latest/cli/cinder-manage.html
> 
> Regards,
> Gorka.
> 
>> I tried the following:
>> $ openstack volume type show 80cb25ff-376a-4483-b4f7-d8c75839e0ce
>> +--------------------+----------------------------------------+
>> | Field | Value |
>> +--------------------+----------------------------------------+
>> | access_project_ids | None |
>> | description | |
>> | id | 80cb25ff-376a-4483-b4f7-d8c75839e0ce |
>> | is_public | True |
>> | name | ssd |
>> | properties | volume_backend_name='tripleo_ceph_ssd' |
>> | qos_specs_id | None |
>> +--------------------+----------------------------------------+
>> $
>> 
>> 
>> $ openstack volume type set --property
>> volume_backend_name='tripleo_ceph_ssdvolumes'
>> 80cb25ff-376a-4483-b4f7-d8c75839e0ce
>> Failed to set volume type property: Volume Type is currently in use. (HTTP 400)
>> (Request-ID: req-5efaa5b7-910f-4802-8494-3115cfc4ab93)
>> Command Failed: One or more of the operations failed
>> $
>> 
>> How to solve my problem?
>> 
>> Thanks!
>> 
>> Sinan
> 
>