In recent months, I have experienced two cases of spontaneous reboots of a SmartOS machine. I haven't detected any hardware problems in the logs. How can I further investigate the issue? I am currently using the release 20231116T064739Z.

The last reboot occurred a few minutes ago.

i have also experienced reboots with no traces in logs. turned out to be a faulty SAS HBA.

cores?

xmerlin: last time smartos was crashing on me was because of faulty non-ECC memory. Worth checking that. (or ipmitool sel elist if you have server grade and ECC)

fmadm faulty would report ECC memory errors too and what surprised me, SmartOS actually stops using those problematic pages.

otis, full nvme no HBA involved

fmadm server grade ECC no memory errors in IPMI

neuroserve, 2x AMD EPYC 7402 24-Core