Hi Piotr, The --mtime option does not affect atime and ctime. If you want full binary compatibility, use also the --pax-option option, e.g.:
--pax-option 'atime:=0,ctime:=0' or --pax-option 'delete=atime,delete=ctime' See the end of subsection "Controlling Extended Header Keywords" of the GNU tar manual for suggestions on how to create binary equivalent archives in POSIX format. It is available online at: https://www.gnu.org/software/tar/manual/html_node/PAX-keywords.html Regards, Sergey