[systemd-devel] systemd-repart with volatile root

[Xogium]

Hi,
as the subject says, I am trying to use repart to add a partition on a block 
device, from inside the initramfs. I also make use of overlayfs via 
systemd-volatile-root to make it possible to write temporarily on the 
root device. However it appears that systemd-repart and 
systemd-volatile-root are both ran in parallel: http://ix.io/2rRi
This results in repart failing to find the root block device.
Would there be any way to have repart ran before systemd-volatile-root, such 
that it has time to finish modifying the real block device ? Adding 
systemd-volatile-root on the Before= line in systemd-repart.service via an 
override is not enough since both units are of type simple. It is started before 
the volatile root unit, but they both ultimately end up running in parallel once 
again.