Using this repo deb http://packages.openmediavault.org/public kralizec main
I get these errors, same instructions worked on Raspbian Wheezy
Code
The following packages have unmet dependencies:
openmediavault : Depends: php5-pam but it is not going to be installed
Depends: proftpd-mod-vroot but it is not going to be installed
Depends: php5-proctitle but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
It is also happening on Ubuntu Vivid on an Orange Pi