Question

I have a Windows process that runs in the background and periodically backs up files. The backup is done by uploading the file to a server.

During the backup, I don’t want to lock any other application out of writing to or reading from the file; if another applications wants to change the file, I should stop the upload and close the file.

Share mode is useless here; even though I’m sharing all access to the file being read, if the other process attempts to open it for writing without sharing read, it will be locked out of the file.

Is it possible to accomplish this on Windows, without writing a driver?

Answer 1

You may be interested in Volume Shadow Copy.