Cleanup handling of podman mount/unmount

We should default to the user name unmount rather then the internal
name of umount.

Also User namespace was not being handled correctly. We want to inform
the user that if they do a mount when in rootless mode that they have
to be first in the podman unshare state.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/docs/source/markdown/podman-mount.1.md b/docs/source/markdown/podman-mount.1.md
index eaed1051e..33c5aece8 100644
--- a/docs/source/markdown/podman-mount.1.md
+++ b/docs/source/markdown/podman-mount.1.md
@@ -12,9 +12,12 @@ podman\-mount - Mount a working container's root filesystem
 Mounts the specified containers' root file system in a location which can be
 accessed from the host, and returns its location.
 
-If you execute the command without any arguments, the tool will list all of the
+If you execute the command without any arguments, Podman will list all of the
 currently mounted containers.
 
+Rootless mode only supports mounting VFS driver, unless you enter the user namespace
+via the `podman unshare` command. All other storage drivers will fail to mount.
+
 ## RETURN VALUE
 The location of the mounted file system.  On error an empty string and errno is
 returned.
@@ -27,7 +30,7 @@ Mount all containers.
 
 **--format**=*format*
 
-Print the mounted containers in specified format (json)
+Print the mounted containers in specified format (json).
 
 **--latest**, **-l**
 
@@ -70,4 +73,4 @@ a7060253093b /var/lib/containers/storage/overlay/0ff7d7ca68bed1ace424f9df154d2dd
 ```
 
 ## SEE ALSO
-podman(1), podman-umount(1), mount(8)
+podman(1), podman-umount(1), mount(8), podman-unshare(1)