On Tue, 14 Dec 2021 15:54:50 +0000 Wols Lists <antlists@xxxxxxxxxxxxxxx> wrote: > Don't know if this is off-topic or not, seeing as my system is very much > reliant on raid ... > > But basically I'm seeing the system just stop responding. Typically it's > in screensaver mode, I've got a blank screen, and it won't wake up. (I > used to think it was something to do with Thunderbird, it mostly > happened while TB was hammering the system, but no ...) > > Today, I had it happen while the system was idle but not in screensaver, > I run xosview, and everything was clearly frozen - including xosview. > > As you might know, my stack is ext4 over lvm (over raid over > dm-integrity for /home) over spinning rust. > > And I run gentoo/systemd - currently on the latest stable kernel afaik, > 5.10.76-gentoo-r1 SMP x86_64. > > Any advice on how to debug a hang - basically I need something that'll > just sit there so when it crashes (and I press the reset button to > recover) I'll have some sort of trace. It would be nice to prove it's > not the disk stack at fault ... > > Obviously, "set these options in the kernel" won't faze me ... Set up "netconsole": https://www.kernel.org/doc/html/latest/networking/netconsole.html https://wiki.ubuntu.com/Kernel/Netconsole -- With respect, Roman
