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Cinder driver does not properly initialize in Openstack Wallaby

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Applies to

  • OpenStack Wallaby
  • Cinder configuration file /etc/cinder/cinder.conf defining a stanza with SVM credentials
  • NetApp ONTAP storage backend

Issue

Cinder driver does not properly initialize, with errors in /var/log/cinder/volume.log like:

2021-11-24 12:06:44.258 26 DEBUG cinder.volume.drivers.netapp.dataontap.client.client_cmode [req-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx - - - - -] <== is_qos_min_supported: exception (0ms) TypeError('can only concatenate str (not "NoneType") to str') trace_logging_wrapper /usr/lib/python3/dist-packages/cinder/volume/volume_utils.py:1433

2021-11-24 12:06:44.260 26 ERROR cinder.volume.manager [req-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx - - - - -] Failed to initialize driver.: TypeError: can only concatenate str (not "NoneType") to str

 

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