Hello,
I'm trying to use your package on a minimal centos7 install
after installing package, edited /etc/overlayroot.conf
rebuild my initramfs
I see this in boot.log
Starting dracut pre-pivot and cleanup hook...
[ 4.536607] dracut-pre-pivot[463]: mount: special device /dev/dm-2 does not exist
[ 4.538347] dracut-pre-pivot[463]: /dev/dm-2: No such file or directory
[ 4.538603] dracut-pre-pivot[463]: Usage: mkfs.xfs
centos_dev1-overlay -> ../dm-2