"Bad or unexpected response from the storage volume backend API: Unable to fetch connection information from backend" Error when trying to attach a cinder volume from a Dell SAN

Solution Verified - Updated -

Issue

  • Why error ScServerHba error: 400 Bad Request _find_serverhba is getting reported while attaching the cinder volume with instance ?
2016-02-02 15:34:41.104 7903 DEBUG cinder.volume.drivers.dell.dell_storagecenter_fc [req-95976090-9aae-4df0-a62f-8f95eab671fa f401974dc3ca4e6b8e83548280595c50 8863df2668404b109f57d2d298888e84 - - -] Initialize connection: fab28cff-8e5a-4426-9a8e-d3afe96baff4 initialize_connection /usr/lib/python2.7/site-packages/cinder/volume/drivers/dell/dell_storagecenter_fc.py:60
2016-02-02 15:34:41.259 7903 DEBUG cinder.volume.drivers.dell.dell_storagecenter_api [req-95976090-9aae-4df0-a62f-8f95eab671fa f401974dc3ca4e6b8e83548280595c50 8863df2668404b109f57d2d298888e84 - - -] ScServerHba error: 400 Bad Request _find_serverhba /usr/lib/python2.7/site-packages/cinder/volume/drivers/dell/dell_storagecenter_api.py:648
2016-02-02 15:34:41.260 7903 DEBUG cinder.volume.drivers.dell.dell_storagecenter_api [req-95976090-9aae-4df0-a62f-8f95eab671fa f401974dc3ca4e6b8e83548280595c50 8863df2668404b109f57d2d298888e84 - - -] Server (21000024ff59a195) not found. 
  • Able to create cinder volume using Dell backend but not able to attach the same volume to instance.

Environment

  • Red Hat OpenStack 7.0

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