cinder/releasenotes/notes/discard-config-option-711a7fbf20685834.yaml

---
features:
  - New config option to enable discard (trim/unmap) support for any backend.
Add config option to enable reporting discard The way for a client of Cinder (read: Nova) to know whether or not it can and should use the discard feature for the block device attachment is to report back discard=True in the connection info. Previously a driver would need to be updated to provide this functionality, which is kind of a pain with so many drivers in Cinder. This change adds a shared boolean config option called ‘report_discard_supported’ which can be set to enable reporting this functionality to the caller of initialize_connection. DocImpact Change-Id: I078e74583621316bcfe138096507e7d22af0d712 Implements: blueprint discard-config-option 2015-12-16 16:59:51 -08:00			`---`
			`features:`
			`- New config option to enable discard (trim/unmap) support for any backend.`