Currently, it is not possible to extend the size of a root volume that is attached to a server and uses a NetApp ONTAP backend When attempting to extend a root volume, the following event is seen in C...Currently, it is not possible to extend the size of a root volume that is attached to a server and uses a NetApp ONTAP backend When attempting to extend a root volume, the following event is seen in Cinder scheduler.log: It is possible to extend a in-use root volume by toggling the volume to 'available'. The procedure for doing so is: Refer to this article: Redhat has a solution for this issue documented in "How to extend attached/in-use volume in Openstack? "
