When deploying the tripleo, the cinder.conf setting "report_discard_supported" should be set true to enable the use of discard (trim/unmap). Request to backport the below BZ for RHOSP-13., https://bugzilla.redhat.com/show_bug.cgi?id=1566619
Verified on: puppet-cinder-12.4.1-7.el7ost.noarch With an RBD backed system we see the report_discard_supported parameter indeed is set to true. [root@controller-0 ~]# grep report_discard /var/lib/config-data/puppet-generated/cinder/etc/cinder/cinder.conf #report_discard_supported = false #report_discard_supported = false report_discard_supported=True
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:2718