Mount, where am I doing it wrong?

Question

linux

Good afternoon, I created an LV:

df -h

cat /etc/fstab

mkdir

as root no problem, as a normal user, as you can see, there is no access to create files, only reading.
help me figure out what needs to be done so that ordinary users can use this LV

Answer 1

ls -la /mnt/
and set correct permissions

Answer 2

still show ls -la /mnt/

Answer 3

do 1 time
sudo chown -R admuser /mnt/new_disk

Answer 4

what do you say?

Answer 5

Andrey San, as hofry rightly requires, it is necessary to show the output of the ls -la command in the /mnt/ directory.
Because you assign the rights with the chmod 777 /mnt/new_disk command, but do not check whether they have been assigned. We need to make sure of this. You also use a somewhat exotic syntax for the touch command. This is how it works, I checked it, but still, when you are not sure about something (as it is now), it is better to use the most common and proven methods.
touch /mnt/new_disk/b.txt - It would be more natural to read and also one character shorter.
In general, we are waiting for the output:
ls -la /mnt/
PS. Why are UUIDs different in fstab and lvdisplay ?