Date: Mon, 30 Sep 2024 13:39:43 +0100 From: Frank Leonhardt <freebsd-doc@fjl.co.uk> To: FreeBSD questions mailing list <freebsd-questions@freebsd.org> Subject: Re: Manual upgrade using base.txz Message-ID: <e4956202b32f39ba5451dd349dfff4e4@fjl.co.uk> In-Reply-To: <7df6784b-c240-4f41-8e6d-61f01008f373@app.fastmail.com> References: <573b9b4c7f56702619bbb77e9a8c0a77@fjl.co.uk> <a53a0d18-8ed2-4341-acdf-1bca95192c6e@app.fastmail.com> <73ea4e68084aaef706787425ab17f023@fjl.co.uk> <7df6784b-c240-4f41-8e6d-61f01008f373@app.fastmail.com>
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On 2024-09-30 12:56, Dave Cottlehuber wrote: > On Thu, 26 Sep 2024, at 14:37, Frank Leonhardt wrote: >> you any idea how far back this might work? Like dumping 14 on a >> ten-year-old AMD64 install? I can, of course, copy the drives and >> experiment if no one else has. > > I would expect the password files not to be directly compatible, and > probably a few other things like sshd_config would be out of date too. > > Either way I think you should have a crack and report back just how > bad the breakage is :-). > > 10 years ago would be 9.x approx, a great deal has changed, hopefully > for the better. The zfs pool layout is different now too, IIRC, so > boot environments might not work OOTB. > > I would be concerned about being easily able to revert, for example. > > You could test the waters by installing 14.1-RELEASE onto a USB stick > or external drive, and seeing if you can use that boot loader, to > boot the older version or not. > > good luck! Good luck is probably right! These would be UFS2, not ZFS. I can see that being a problem, but I can't explain exactly where the problem would lie. If the disk bootstraps an 8.3 /boot/kernel/kernel it should go right ahead anything in that place on the disk, right? ¯\_(ツ)_/¯ Reverting won't be a problem - I'd copy the entire disk first (actually they're usually mirrored using geom). Where most of the stuff is running in jails anyway, updating the kernel and base shouldn't involve changing a lot of config files, and things like sshd_config won't have changed much. passwd? Hmm. Good point - I can vipw and copy/paste. When I get around to this I'll report back. I may be grumpy. Regards, Frank.
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