chown: WARNING: Circular directory structure. This almost certainly means that you have a corrupted file system.

check the mount directory. it might be the new one. and their's no files in that directory and you might using -R. try with  without -R
#chown owner:group <directory>    < use this >
#chown -R owner:group <directory>    < when thier is no files in that mount direcotary you might get above error.> so try with without -R