Cinter locking tests

locking-test.rst

Cinter locking tests

General setup

Controller node

• Redis server

Compute nodes

• Python packages:
  • tooz>=16.0
  • redis
• Tooz lock patch [1]
• Replace any cinder.utils.synchronized with cinder.coordination.synchronized. Example [2]
• Make sure that external locks are used when needed

cinder.conf:

[DEFAULT]
host=cinder

[coordination]
backend_url=redis://<controller-ip>

[1]	https://review.openstack.org/183537

[2]	https://review.openstack.org/#/c/185646/4

GlusterFS setup

Compute nodes

cinder.conf:

[DEFAULT]
default_volume_type = glusterdriver-1
enabled_backends = glusterdriver-1

[glusterdriver-1]
glusterfs_shares_config = /etc/cinder/glusterfs
volume_driver = cinder.volume.drivers.glusterfs.GlusterfsDriver
volume_backend_name = glusterdriver-1

/etc/cinder/glusterfs:

<compute#01-ip>:/<gluster-volume-name>

cinder/volume/drivers/remotefs.py:

@@ -88,7 +88,7 @@
-def locked_volume_id_operation(f, external=False):
+def locked_volume_id_operation(f, external=True):

Rally test

create-snapshot.yaml:

---
  CinderVolumes.create_and_list_snapshots:
    -
      args:
          force: false
      runner:
        type: "constant"
        times: 40
        concurrency: 10
      context:
        users:
          tenants: 1
          users_per_tenant: 1
        volumes:
          size: 1
        quotas:
          cinder:
            snapshots: 50