--- features: - Added policies to disallow multiattach operations. This includes two policies, the first being a general policy to allow the creation or retyping of multiattach volumes is a volume create policy with the name ``volume:multiattach``. The second policy is specifically for disallowing the ability to create multiple attachments on a volume that is marked as bootable, and is an attachment policy with the name ``volume:multiattach_bootable_volume``. The default for these new policies is ``rule:admin_or_owner``; be aware that if you wish to disable either of these policies for your users you will need to modify the default policy settings. upgrade: - Added policies to disallow multiattach operations. This includes two policies, the first being a general policy to allow the creation or retyping of multiattach volumes is a volume create policy with the name ``volume:multiattach``. The second policy is specifically for disallowing the ability to create multiple attachments on a volume that is marked as bootable, and is an attachment policy with the name ``volume:multiattach_bootable_volume``. The default for these new policies is ``rule:admin_or_owner``; be aware that if you wish to disable either of these policies for your users you will need to modify the default policy settings.