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Chapter 5. Test the Configured Back End

After you deploy the back ends to the overcloud, test if you can successfully create volumes on them. You must load the necessary environment variables first. The variables are defined in /home/stack/overcloudrc by default.

  1. To load the variables, run the following command as the stack user: 
$ source /home/stack/overcloudrc
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Note

For more information, see Accessing the overcloud in the Director Installation and Usage guide.

  1. Create a volume type for each back end. Log in to the Controller node of the overcloud as the stack user and run the following command: 
$ cinder type-create backend1
$ cinder type-create backend2
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These commands create the volume types backend1 and backend2, one for each back end defined through the cinder::config::cinder_config class of envfile.

  1. Map each volume type to the volume_backend_name of a back end enabled through the cinder_user_enabled_backends class of envfile. The following commands map the volume type backend1 to netapp1 and backend2 to netapp2: 
$ cinder type-key backend1 set volume_backend_name=netapp1
$ cinder type-key backend2 set volume_backend_name=netapp2
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  1. You can now test each back end. Create a 1GB volume named netapp_volume_1 on the netapp1 back end by invoking the backend1 volume type: 
$ cinder create --volume-type backend1 --display_name netappvolume_1 1
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  1. Create a similar volume on the netapp2 back end by invoking the backend2 volume type: 
$ cinder create --volume-type backend2 --display_name netappvolume_2 1
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