Since the deletion of the large spurious backup was going too slowly, I went into the directory in question in the shell and deleted its contents. According to Webmin, it's now down to 22.36GB. According to both df and du, it is down to 20GB, or 41% of the available space.
Since the deletion of the large spurious backup was going too slowly, I went into the directory in question in the shell and deleted its contents. According to Webmin, it's now down to 22.36GB. According to both df and du, it is down to 20GB, or 41% of the available space.