Questions about openbsd ffs and linux ext2fs

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https://bbs.archlinux.org – Hello everyone.First of all, forgive me if the post is not on the correct section.I'm going to install arch linux to my thinkpad and i have some questions:I have two external hard disks (once) formatted to openbsd ffs. (now i'm making efforts to turn it to ext2fs )1) Does Arch have by default read support for openbsd ffs filesystems or i have to build a custom kernel?2)I would mostly like to have read and write access from both OSs. I know that ext2fs should work for read and write from Openbsd and Linux so this could be a good option. My problem starts when i try it for example to (HowTos)