There is a hammer2fs port for openbsd that is actively maintained https://github.com/kusumi/openbsd_hammer2 https://github.com/kusumi/openbsd_hammer2 Somehow

There is a hammer2fs port for openbsd that is actively maintained https://github.com/kusumi/openbsd_hammer2 https://github.com/kusumi/openbsd_hammer2 Somehow it was just never taken over the finish line though. I don't know why.