As the title describes, we didn’t find attach_time and detach_time in the response described in https://libopenstorage.github.io/w/swagger-ui/release-6.3.index.html#/OpenStorageVolume/Inspect.
The Portworx Version in our environment (RNO) is 2.5.1.0-3e947c0
[root@perrylab tmux-3.1b]# pxctl -v
pxctl version 2.5.1.0-3e947c0
We tried pxctl volume inspect pvc-bf899ee6-8f69-4106-a77e-93b2b7b3d981 --raw and coding with python.