Hi Ignazio,The feature was introduced in Pike release [0], so it should work.Please specify the Volume API version >= 3.40 either by:a) passing `--os-volume-api-version` parameter to the command line:cinder --os-volume-api-version 3.40 revert-to-snapshot snap1b) exporting the environment variable OS_VOLUME_API_VERSION:export OS_VOLUME_API_VERSION=3.40cinder revert-to-snapshot snap1Please let us know if it works or not.[0] https://docs.openstack.org/releasenotes/cinder/pike.html#relnotes-11-0-0-stable-pike-new-featuresLucioOn Wed, 16 Sep 2020 at 09:52, Ignazio Cassano <ignaziocassano@gmail.com> wrote:Hello Stackers,does cinder revert to snapshot works on stein ?The command cinder revert-to-snapshot returns:error: argument <subcommand>: invalid choice: u'revert-to-snapshot'I also tried using cinder v3 api post /v3/{project_id}/volumes/{volume_id}/actionbut it returns :{"itemNotFound": {"message": "The resource could not be found.", "code": 404}}Please, anyone could help me ?Ignazio