Date: Sun, 16 Oct 2011 19:43:13 -0700 From: Garrett Cooper <yanegomi@gmail.com> To: Xin LI <delphij@gmail.com> Cc: Xin LI <delphij@freebsd.org>, freebsd-geom@freebsd.org Subject: Re: GELI devices produced with 9.0+ fail when mounted on 8.2, etc? Message-ID: <7EC93C28-6405-443F-92C6-0291F8D88995@gmail.com> In-Reply-To: <CAGMYy3tX=Xr1k%2B=7FqV5=Ddooopodtmv1hG=zy5G2Ye5KCuO_Q@mail.gmail.com> References: <924643A0-0798-4FAC-8F82-4AFBC56DC8D7@gmail.com> <CAGMYy3tX=Xr1k%2B=7FqV5=Ddooopodtmv1hG=zy5G2Ye5KCuO_Q@mail.gmail.com>
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On Oct 16, 2011, at 5:32 PM, Xin LI wrote: > On Sun, Oct 16, 2011 at 5:01 PM, Garrett Cooper <yanegomi@gmail.com> = wrote: > [...] >> The attach will fail with the following message: >>=20 >> geli: MD5 hash mismatch for /dev/md0. >=20 > I'm pretty sure that this is from userland, and because FreeBSD 9.x > have support of GELI metadata version 6, while 8.2 have support up to > metadata version 5. It's not a regression IMHO. In other words this is a design flaw, because geli metadata is only = forwards compatible. One of FreeBSD's claims to fame is its backwards = compatibility -- why aren't geom developers adhering to this? Thanks, -Garrett=
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