Limitations of integrating IBM Storage Scale Cinder driver with RHOSP

Limitations encountered when you integrate IBM Storage Scale Cinder driver with RHOSP:

• The IBM Storage Scale Cinder driver accepts single CES IP as nas_host parameter value in order to mount the cinder-volume fileset through Triple-O integration.

• NFS v3 is not supported as a value for GlanceNfsOptions or SpectrumScaleNFSOptions parameters.

• Usage of copy-on-write feature to create volume from an image is not supported.

• If either nas_host or gpfs_mount_point_base changes after the initial deployment, you need to remove the older NFS share entry from /etc/fstab from all the overcloud nodes.

• The following features are not supported by IBM Storage Scale cinder driver in RHOSP:

  • Multi attach volume
  • Create a consistency group from a consistency group snapshot
  • Create a consistency group from a consistency group
  • Extend attached volume
  • Backup volume