Stuck with volumes I can't remove

Convoy
1

Hi, I’m trying to clean up a docker host to work out a proper process to upgrade from convoy 0.4.3 NFS to 0.5.0 across our cluster. As part of this procees I’m trying to clear down any unused volumes and I am stuck with some I can’t delete. I can’t delete in convoy because it’s still mounted and I can’t delete in docker as I get Handler not found. How can I tidy this up?

18ca8922-65bb-45de-821c-549cbd190eb4
    /data/liferaydeploykevtest

[root@ld3-docker-7 ~]# convoy delete 18ca8922-65bb-45de-821c-549cbd190eb4
ERRO[0000] Error response from server, Cannot delete volume 18ca8922-65bb-45de-821c-549cbd190eb4. It is still mounted

{
        "Error": "Error response from server, Cannot delete volume 18ca8922-65bb-45de-821c-549cbd190eb4. It is still mounted\n"
}

[root@ld3-docker-7 ~]# docker volume ls
list convoy: VolumeDriver.List: Handler not found: POST /VolumeDriver.List
DRIVER              VOLUME NAME
.... snip
convoy              liferaydatakevtest
convoy              liferaydeploykevtest
convoy              liferaykevtest

[root@ld3-docker-7 ~]# docker volume rm liferaydeploykevtest
Error response from daemon: get liferaydeploykevtest: VolumeDriver.Get: Handler not found: POST /VolumeDriver.Get