System is unable to boot after migrating /usr directory to a new file system

Issue

• After creating a new file system, migrating all the contents from the /usr directory to that new file system and adding the corresponding new entry in the /etc/fstab file, the system is unable to boot up.
• The system could either enter in a loop trying to mount the newly entry added in /etc/fstab for the new /usr file system or, either, the system could time out waiting for the device that contains the new /usr file system and then rollback the booting process:

[  OK  ] Started Show Plymouth Boot Screen.
[  OK  ] Reached target Paths.
[  OK  ] Reached target Basic System.
[  OK  ] Found device /dev/mapper/vg_root-lv_root.
         Starting File System Check on /dev/mapper/vg_root-lv_root...
[  OK  ] Started File System Check on /dev/mapper/vg_root-lv_root.
[  OK  ] Started dracut initqueue hook.
         Mounting /sysroot...
[  OK  ] Reached target Remote File Systems (Pre).
[  OK  ] Reached target Remote File Systems.
[  OK  ] Mounted /sysroot.
[  OK  ] Reached target Initrd Root File System.
         Starting Reload Configuration from the Real Root...
[  OK  ] Started Reload Configuration from the Real Root.
[ TIME ] Timed out waiting for device dev-di...2d3jv7\x2dGvZ7\x2dzd1CYX.device.
[DEPEND] Dependency failed for /sysroot/usr.
[DEPEND] Dependency failed for Initrd File Systems.
[  OK  ] Stopped target Basic System.
[  OK  ] Stopped dracut initqueue hook.
         Stopping dracut initqueue hook...
         Starting Cleaning Up and Shutting Down Daemons...
[  OK  ] Stopped dracut pre-udev hook.
         Stopping dracut pre-udev hook...
[  OK  ] Stopped dracut cmdline hook.
         Stopping dracut cmdline hook...
[  OK  ] Stopped target System Initialization.
...

• The system has other system's directories on separate file systems that are only specified in /etc/fstab and the problem has never existed before, why does /usr behave in a different way?