Date: Thu, 3 Jan 2019 14:13:49 +0100 From: Stefan Bethke <stb@lassitu.de> To: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 12 and Nocona Message-ID: <B9685323-407C-4FEC-AA3B-CCB4EAC96ECF@lassitu.de> In-Reply-To: <fb0361c2-28e1-341f-c11f-75488f5ad95c@plan-b.pwste.edu.pl> References: <fb0361c2-28e1-341f-c11f-75488f5ad95c@plan-b.pwste.edu.pl>
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> I have under supervision a few old servers running 11.2-STABLE. The > hardware is almost for retirement, but still in working condition. = It's > all old Nocona NetBurst microarchitecture. I have recently tried do > upgrade OS two of them to 12.0-STABLE, but failed. When I use old > bootloader the boot freezes on blue highlighted "Booting" stage, when = I > tried to use 12 loader, it freezes earlier, on loading kernel modules. > The kernel was compiled from fresh sources for CPUTYPE?=3Dnocona. > 11.2-STABLE is fine with this optimization and the same kernel boots > fine on newer hardware. >=20 > It is fair, that 11 EOL is expected September 30, 2021 and these = servers > will likely be retired before this date, but some questions arise: >=20 > Is such old hardware still supported? Is it possible (how to) debug = the > booting process? The first step is to try with known-good bits: can you boot these = machines off the 12.0 ISO or memstick images? Can you load your kernel = and modules with the loader from the ISO/memstick? Does GENERIC built = without any flags work? If any of these don=E2=80=99t work, try to be as specific as possible = when reporting problems. For example, the exact make of mainboard (kenv = output) and the BIOS version, and any relevant BIOS settings are likely = important for problems regarding the loader. If the kernel and modules = load, you can try a verbose boot to see better how far the kernel gets. I=E2=80=99d be really surprised if the CPUs themselves would cause = trouble. Stefan --=20 Stefan Bethke <stb@lassitu.de> Fon +49 151 14070811
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