sudo smartctl -d nvme,0x1 -a /dev/nvme0 The output was mostly as expected, but one item stood out: Unsafe Shutdowns: 68 This is only two less than the reported number of power cycles, and appears to increase by one for each power cycle, even after applying the patch from PR 54969. The machine is typically powered off by running "halt -p".
I've got similar results on my "Samsung SSD 960 PRO 512GB": ... Power Cycles: 32 Power On Hours: 16,890 Unsafe Shutdowns: 30 ... +--------------------+--------------------------+-----------------------+ | Paul Goyette | PGP Key fingerprint: | E-mail addresses: | | (Retired) | FA29 0E3B 35AF E8AE 6651 | paul%whooppee.com@localhost | | Software Developer | 0786 F758 55DE 53BA 7731 | pgoyette%netbsd.org@localhost | +--------------------+--------------------------+-----------------------+