Date: Mon, 8 Dec 2025 17:53:28 +0000 From: Colin Percival <cperciva@tarsnap.com> To: =?UTF-8?Q?Gerrit_K=C3=BChn?= <gerrit.kuehn@aei.mpg.de> Cc: freebsd-stable@freebsd.org Subject: Re: question about updating to 15.0 Message-ID: <0100019aff18d57b-d4e5e28f-e700-4c2f-9b77-fb866aa2c798-000000@email.amazonses.com> In-Reply-To: <20251208075059.2bdd4fb1@arc.aei.uni-hannover.de> References: <20251205153010.0abb937a@arc.aei.uni-hannover.de> <0100019aefcee8b6-d82c83fb-d424-4761-88a3-3fafbdce84b5-000000@email.amazonses.com> <20251208075059.2bdd4fb1@arc.aei.uni-hannover.de>
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On 12/7/25 22:50, Gerrit Kühn wrote: > Am Fri, 5 Dec 2025 18:38:25 +0000 > schrieb Colin Percival <cperciva@tarsnap.com>: >>> This makes me wonder if 14.3 is the only version where upgrading to >>> 15.0 via freebsd-upgrade is supported, or if, e.g., 14.2 or 13.5 would >>> be valid (and supported) starting points for the direct upgrade >>> process to 15.0, too. > >> Upgrading from any non-EoL release *should* work. But personally I would >> upgrade to 14.3 first, simply because 14.3->15.0 has been tested far >> more. > > Totally makes sense, thanks for the confirmation. Does that refer to > non-EoL versions being available at that time only, or also to later ones? > I.e., will upgrading from the (not yet existing) 14.4 (that will be > released before 15.1 comes out) to 15.0 be supported, too? Upgrades which "go backwards in time" may work but it is not guaranteed; in particular sometimes there are new APIs which are merged back to older stable branches and appear there "first" as far as releases are concerned. So the general rules are: * Upgrades should go forward in version number (don't "upgrade" from 15.0 to 14.4), * Upgrades should go forward in time (don't upgrade from 14.4 to 15.0 since 14.4 was released in March 2026 and 15.0 was released in December 2025), * Upgrades should start from a release which was not EoL when the new release was published (don't upgrade from 14.2 to 15.0 since 14.2 was EoL at the end of September 2025 and 15.0 was released in December 2025), and * Subject to the above, going "one major at a time" is probably safest. -- Colin Percival FreeBSD Release Engineering Lead & EC2 platform maintainer Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid
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