The --rsync option is respected in 2.1.4 (otherwise the error would occur much earlier).
But it's still a regression, because innobackupex in 2.1.4 unnecessarily runs 'cp' to copy backup metadata files. Previously, it would just write those files directly. In 2.1.4 it first copies them to temporary files, and then calls 'cp' to copy them to the final location.
The --rsync option is respected in 2.1.4 (otherwise the error would occur much earlier).
But it's still a regression, because innobackupex in 2.1.4 unnecessarily runs 'cp' to copy backup metadata files. Previously, it would just write those files directly. In 2.1.4 it first copies them to temporary files, and then calls 'cp' to copy them to the final location.