From owner-freebsd-hackers@FreeBSD.ORG  Sun Dec 18 15:16:45 2005
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Date: Sun, 18 Dec 2005 16:16:16 +0100
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Subject: Re: accessing NetBSD filesystem
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On Sun, Dec 18, 2005 at 01:54:18AM +0100, Gilbert Fernandes wrote:
> 
> The FreeBSD UFS is the FFS accessed through the VFS layer, but basically
> the format is the same. If you want to have access, from FreeBSD, to
> NetBSD partitions, make sure the NetBSD partitions have been formated
> using FFSv2 which is the port of UFS to NetBSD. There are some
> differences though : no ACL support nor snapshots available there.

FFS v1 and v2 are both working. I'm using that everyday. The one part
which needs attention is soft updates: FreeBSD / DragonFly have it as
permanent flag, NetBSD as mount option.

Joerg