$ ls -l f1.txt
-rwx-wxr-x 2 mayar mayar 8 août  12 10:09 f1.txt

$ sudo /sbin/hdparm  --fibmap f1.txt
f1.txt:
 filesystem blocksize 4096, begins at LBA 2048; assuming 512 byte sectors.
 byte_offset  begin_LBA    end_LBA    sectors
           0  329080784  329080791          8