On Thu, 18 Jun 2020, Christoph Hellwig wrote: > > For SSDs, I don't think an extra stop should ever be an issue. > > Extra shutdowns will usually cause additional P/E cycles. I am not so sure. We're talking about enforcing clean shutdowns here (from the SSD PoV). A system reboot takes enough time that the SSD is likely to do about the same amount of P cycles commiting to FLASH any important data that it would trigger by a shutdown sequence, simply because it should not keep important data in RAM for too long. By extension, it would not increase E cycles either. OTOH, unclean shutdowns *always* cause extra P/E, and that's if you're lucky enough for it to not cause anything much worse. -- Henrique Holschuh
