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Openstack: Notes on enabling image-volume cache for Solidfire and ONTAP

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Applies to

  • Openstack
  • ONTAP
  • Element OS

Description

This article was written to supplement the current Openstack documentation on how to implement Image-Volume cache for Cinder. The value of implementing image volume cache is:

  • To keep Cinder from having to repeatedly download the same image over again when provisioning
  • To significantly improve how long it takes to provision a new Cinder volume that is based on a image
  • To decrease overhead on the Openstack Controller

Note: Solidfire has a legacy image-caching option which is now deprecated:sf_allow_template_caching

  • 'sf_allow_template_caching' was a caching option that was implemented prior to the general cinder image-caching feature being developed.
  • Support for 'sf_allow_template_caching' ended with the Rocky release
  • For Openstack releases after Rocky, customers should transition to the 'image_volume_cache_enabled' option

 

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