What is the problem?
Error makes it sound like
/brick/glu01 both exist but aren’t of the same type, as in one is a file and the other a directory.
Thank you @stgraber.
The created containers must have privileged mode true due to glusterfs.
I solved the problem by referring to the article you wrote before.
After canceling the privilege mode, the directory was linked and the privilege mode was changed to true again.