On Thu, Aug 08, 2019 at 09:04:00AM -0500, David Wright wrote:
wren 08:50:11 ~# lsblk -f | grep sda7
├─sda7 ext4 swan07 4a4e352f-2180-4083-92b4-f46e4e0104b4 /wrenbk
wren 08:50:26 ~# mkdir /wa1 /somethingelse
wren 08:50:49 ~# mount /dev/sda7 /somethingelse
mount: /dev/sda7 is already mounted or /somethingelse busy
/dev/sda7 is already mounted on /wrenbk
32 wren 08:51:16 ~# mount /dev/sda7 /wa1
mount: /dev/sda7 is already mounted or /wa1 busy
/dev/sda7 is already mounted on /wrenbk
32 wren 08:51:31 ~# rmdir /wa1 /somethingelse
wren 08:51:53 ~#
It's already been said repeatedly that you should post the bottom of dmesg output because kernel mount errors show up there but not in the output of the mount command.