Date: Mon, 20 Nov 2023 09:12:45 +0800 From: Zhenlei Huang <zlei@FreeBSD.org> To: bob prohaska <fbsd@www.zefox.net> Cc: freebsd-current@freebsd.org Subject: Re: How much survives an install/reboot cycle? Message-ID: <A7A17671-F920-4ADE-A1E4-7CF866540A52@FreeBSD.org> In-Reply-To: <ZVou9u%2BXxrXCf0fJ@www.zefox.net>
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> On Nov 19, 2023, at 11:51 PM, bob prohaska <fbsd@www.zefox.net> wrote: > > How much of a running system's state survives a reboot? I used to think > the answer was "nothing", but from time to time a second reboot behaves > a little differently from the previous one. Warner has a good description about that. I totally agree. > > The most recent example was an update to bpf.c: Prior to the update an > armv7 system had been inclined to drop ssh connections left up for days. > After updating and running a build/install cycle the behavior persisted, > but since a second reboot with no intentional changes it has stopped. The most recent change to bpf.c is 7a974a649848 (bpf: Make dead_bpf_if const) . It is not a functional change, and I do not think it will affect ssh. There could be issues under the earth. Anyway please do not hesitate to report if you get recovered by reverting 7a974a649848. > > I've not tampered with nextboot, so I don't think that's it. Maybe I'm > just imagining imagining things.... > > Thanks for reading, > > bob prohaska > > Best regards, Zhenleihelp
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