I have 15+ data files I am trying to force overwrite with robocopy. I use the following command line switches:
C:\>robocopy d:\datafolder f:\backup datafile*.dat /is /fft /MT:32
15 files copy successfully as expected.
I immediately run the following command hoping to see all 15 files targeted to be overwritten but 4 show a status of "modified" to be skipped.
C:\>robocopy d:\datafolder f:\backup datafile*.dat /is /fft /MT:32 /v /l
Here is the log of both executions:
C:\>robocopy d:\datafolder f:\backup datafile*.dat /is /fft /MT:32 ------------------------------------------------------------------------------- ROBOCOPY :: Robust File Copy for Windows ------------------------------------------------------------------------------- Started : Thursday, December 22, 2016 11:35:45 AM Source : d:\datafolder\ Dest = f:\backup\ Files : datafile*.dat Options : /FFT /DCOPY:DA /COPY:DAT /IS /MT:32 /R:1000000 /W:30 ------------------------------------------------------------------------------ 100% New File 1.0 g d:\datafolder\datafile0.dat 100% New File 1.0 g d:\datafolder\datafile00.dat 100% New File 1.4 g d:\datafolder\datafile01.dat 100% New File 600.0 m d:\datafolder\datafile1.dat 100% New File 2.0 g d:\datafolder\datafile11.dat 100% New File 2.0 g d:\datafolder\datafile12.dat 100% New File 2.0 g d:\datafolder\datafile13.dat 100% New File 500.0 m d:\datafolder\datafile2.dat 100% New File 700.0 m d:\datafolder\datafile3.dat 100% New File 500.0 m d:\datafolder\datafile4.dat 100% New File 600.0 m d:\datafolder\datafile5.dat 100% New File 600.0 m d:\datafolder\datafile6.dat 100% New File 1.0 g d:\datafolder\datafile7.dat 100% New File 1.0 g d:\datafolder\datafile8.dat 100% New File 1.0 g d:\datafolder\datafile9.dat ------------------------------------------------------------------------------ Total Copied Skipped Mismatch FAILED Extras Dirs : 1 1 1 0 0 0 Files : 15 15 0 0 0 0 Bytes : 15.882 g 15.882 g 0 0 0 0 Times : 1:57:36 0:09:00 0:00:00 0:00:49 Ended : Thursday, December 22, 2016 11:45:35 AM C:\>robocopy d:\datafolder f:\backup datafile*.dat /is /fft /MT:32 /v /l ------------------------------------------------------------------------------- ROBOCOPY :: Robust File Copy for Windows ------------------------------------------------------------------------------- Started : Thursday, December 22, 2016 11:45:50 AM Source : d:\datafolder\ Dest = f:\backup\ Files : datafile*.dat Options : /FFT /V /L /DCOPY:DA /COPY:DAT /IS /MT:32 /R:1000000 /W:30 ------------------------------------------------------------------------------ modified 600.0 m d:\datafolder\datafile1.dat modified 500.0 m d:\datafolder\datafile2.dat modified 700.0 m d:\datafolder\datafile3.dat modified 500.0 m d:\datafolder\datafile4.dat 100% Same 1.0 g d:\datafolder\datafile0.dat 100% Same 1.0 g d:\datafolder\datafile00.dat 100% Same 1.4 g d:\datafolder\datafile01.dat 100% Same 2.0 g d:\datafolder\datafile11.dat 100% Same 2.0 g d:\datafolder\datafile12.dat 100% Same 2.0 g d:\datafolder\datafile13.dat 100% Same 600.0 m d:\datafolder\datafile5.dat 100% Same 600.0 m d:\datafolder\datafile6.dat 100% Same 1.0 g d:\datafolder\datafile7.dat 100% Same 1.0 g d:\datafolder\datafile8.dat 100% Same 1.0 g d:\datafolder\datafile9.dat ------------------------------------------------------------------------------ Total Copied Skipped Mismatch FAILED Extras Dirs : 1 1 1 0 0 0 Files : 15 11 4 0 0 0 Bytes : 15.882 g 13.636 g 2.246 g 0 0 0 Times : 0:00:00 0:00:00 0:00:00 0:00:00 Ended : Thursday, December 22, 2016 11:45:50 AM
Anyone know why those 4 files are showing as modified and therefore being skipped?
Possibly problem is that these files are identical for robocopy - if timestamp and file size are the same robocopy will not copy/move files. To move or copy such files you have to add
/IToption:Some links to read:
How does Robocopy determine if a file is “changed”,
Robocopy Syntax, Command Line Switches and Examples,
What does Robocopy mean by tweaked