Re: unexpected behavior of cp and mv

[Roberto C. Sánchez <roberto@debian.org>]

On Wed, Apr 29, 2020 at 12:22:41PM -0400, Alberto Sentieri wrote:
> cp and mv are not preserving the file timestamps when copying from a ext4
> file system to a smb file system.
> 
> I am running cp and mv on:
> $ lsb_release -a
> No LSB modules are available.
> Distributor ID:    Debian
> Description:    Debian GNU/Linux 10 (buster)
> Release:    10
> Codename:    buster
> 
> SMB is running on:
> $ lsb_release -a
> No LSB modules are available.
> Distributor ID:    Debian
> Description:    Debian GNU/Linux 9.12 (stretch)
> Release:    9.12
> Codename:    stretch
> 
> I am using "cp -pi" to copy the files and "mv -i" to move them.
> 
> If I run cp or mv on a Debian stretch, time stamps will be correct on the
> SMB file system.
> 
> Buster gnome3 file manager will copy or move the files without problems, I
> mean, they will preserve time stamps.
> 
> This started happening since I upgraded my workstation to buster, so the
> problem seems to be in buster. I am mounting the file system on buster with
> the following line added to fstab, which, by the way, is the same I was
> using when my workstation was running stretch:
> 
> //192.168.1.2/alberto /mnt/u1/rw cifs
> credentials=/root/pass/alberto.pass,uid=alberto,gid=alberto,rw 0 0
> 
> Does anyone knows which package is causing this behavior?
> 
First, do you see the same behavior if you use /bin/cp and /bin/mv
instead of simply cp and mv?

Regards,

-Roberto

-- 
Roberto C. Sánchez