Forgive me if already asked, but: * Is the CephFS metadata pool on enterprise-class NVMe SSDs? Which model, and how many? Firmware up to date? * Are those shared with other uses? Boot, OSD, etc? * How many PGs in the metadata pool, across how many OSDs? * Is the first CephFS data pool on SSDs, with setfattr layouts used to attach subdirectories to additional data pools?