linux-kernel - Re: [PATCH] ghes: Track number of recovered hardware errors

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Message-ID: <kyprjdilgyz3xgw3slnrsemptnpp6h75mipv6a3lgp2dmwqekg@s7azbepy7nu2>
Date: Tue, 15 Jul 2025 03:20:35 -0700
From: Breno Leitao <leitao@...ian.org>
To: Borislav Petkov <bp@...en8.de>
Cc: "Luck, Tony" <tony.luck@...el.com>, 
	"Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>, James Morse <james.morse@....com>, 
	"Moore, Robert" <robert.moore@...el.com>, "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "acpica-devel@...ts.linux.dev" <acpica-devel@...ts.linux.dev>, 
	"kernel-team@...a.com" <kernel-team@...a.com>
Subject: Re: [PATCH] ghes: Track number of recovered hardware errors

Hello Borislav,

On Tue, Jul 15, 2025 at 10:29:39AM +0200, Borislav Petkov wrote:
> We have all of that info in rasdaemon. If the machine explodes, one can simply
> read out its database from the core file. 
> 
> And if you don't run rasdaemon, you can read out dmesg from the vmcore where
> the errors should have been dumped anyway.

I approach this from a slightly different perspective, given my
experience overseeing millions of servers and having to diagnose kernel
problems across such a massive fleet.

To be candid, when you’re operating at that scale, kernel crashes and
hardware errors are unfortunately a common occurrence.

For instance, If every investigation (as you suggested above) take just
a couple of minutes, there simply wouldn’t be enough hours in the day,
even working 24x7, to keep up with the volume.

Thanks for the review and suggestions,
--breno