Perl in-place edit fails with "File exists" error, and deletes the original file from CIFS share on RHEL systems.

Issue

• When performing in-place edits using perl on files stored on a CIFS share, it results in a failure, and the original file is deleted and not re-created, leading to data loss:

  # echo test1 > /path/to/cifs/share/a.txt
  
  # cat /path/to/cifs/share/a.txt 
  test1
  
  # perl -pe 's/test1/test2/g' -i /path/to/cifs/share/a.txt
  Can't do inplace edit on a.txt: File exists.
  
  # ls -l /path/to/cifs/share
  total 0
  
  # perl -pe 's/test1/test2/g' -i /path/to/cifs/share/a.txt
  Can't open a.txt: No such file or directory.
  

• This issue doesn't occur on local filesystems or with NFS.

• Why does this issue only occur on CIFS-mounted shares and not on local filesystems?

• Perl in-place edit (perl -i -pe ...) fails with Can't do in-place edit on : No such file or directory.

• Is this a known issue with Perl in RHEL or with CIFS/Azure File Shares?