Hi, > On 28. Feb 2023, at 17:36, Corey Minyard <miny...@acm.org> wrote: > > On Tue, Feb 28, 2023 at 02:53:12PM +0100, Christian Theune via > Openipmi-developer wrote: >> Hi, >> >> I’ve been trying to debug the PANIC and OEM string handling and am running >> out of ideas whether this is a bug or whether something so subtle has >> changed in my config that I’m just not seeing it. >> >> (Note: I’m willing to pay for consulting.) > > Probably not necessary.
Thanks! The offer always stands. If we should ever meet I’m also able to pay in beverages. ;) >> I have machines that we’ve moved from an older setup (Gentoo, (mostly) >> vanilla kernel 4.19.157) to a newer setup (NixOS, (mostly) vanilla kernel >> 5.10.159) and I’m now experiencing crashes that seem to be kernel panics but >> do not get the usual messages in the IPMI SEL. > > I just tested on stock 5.10.159 and it worked without issue. Everything > you have below looks ok. > > Can you test by causing a crash with: > > echo c >/proc/sysrq-trigger > > and see if it works? Yeah, already tried that and unfortunately that _doesn’t_ work. > It sounds like you are having some type of crash that you would normally > use the IPMI logs to debug. However, they aren't perfect, the system > has to stay up long enough to get them into the event log. I think they are staying up long enough because a panic triggers the 255 second bump in the watchdog and only then pass on. However, i’ve also noticed that the kernel _should_ be rebooting after a panic much faster (and not rely on the watchdog) and that doesn’t happen either. (Sorry this just popped from the back of my head). > In this situation, getting a serial console (probably through IPMI > Serial over LAN) and getting the console output on a crash is probably > your best option. You can use ipmitool for this, or I have a library > that is able to make connections to serial ports, including through IPMI > SoL. Yup. Been there, too. :) Unfortunately we’re currently chasing something that pops up very randomly on somewhat odd machines and I also have the feeling that it’s systematically broken right now (as the “echo c” doesn’t work). Thanks a lot, Christian -- Christian Theune · c...@flyingcircus.io · +49 345 219401 0 Flying Circus Internet Operations GmbH · https://flyingcircus.io Leipziger Str. 70/71 · 06108 Halle (Saale) · Deutschland HR Stendal HRB 21169 · Geschäftsführer: Christian Theune, Christian Zagrodnick _______________________________________________ Openipmi-developer mailing list Openipmi-developer@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openipmi-developer
