Date: Mon, 18 Apr 2011 08:24:57 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: rank1seeker@gmail.com, Pawel Jakub Dawidek <pjd@freebsd.org> Subject: Re: Add SUM sysctl Message-ID: <201104180824.57541.jhb@freebsd.org> In-Reply-To: <20110416.142444.546.5@DEV> References: <20110415.150349.671.1@DEV> <D18D23C3-5179-46BE-BAA6-288B06DB0408@gsoft.com.au> <20110416.142444.546.5@DEV>
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On Saturday, April 16, 2011 10:24:44 am rank1seeker@gmail.com wrote: > After compilation of kernel and world in MUM, kernel is installed in MUM, > but to install world, we reboot into SUM, then install world. (HANDBOOK) > Now, in case of GELI usage AND if upgrading is taking place, i.e; 8.2 -> > 8.3, once you reboot into SUM to install world, you are doomed, BECAUSE > ... > Kernel will bitch (GELI part), about world->kernel mismatch and you won't > be able to install world as you cant decrypt geom providers!! > The only way to save yourself in that case is to restore /boot/kernel.old, > or one is doomed. This seems broken to me. An 8.3 kernel+modules should be able to handle GELI devices with an 8.2 world. If they can't, it means someone broke the ABI. Even a 9.0 kernel should work fine with an 8.x-stable world. -- John Baldwin
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