Christoph, > I don't know. But cheap consumer SSDs can basically exhibit any > brokenness you can imagine. And claiming to support atomics basically > just means filling out a single field in identify with a non-zero > value. So my hopes of only seeing it in a few devices is low, moreover > we will only notice it was broken when people lost data. It's very unfortunate that AWUN/AWUPF are useless. Even when it comes to something as simple as sanity checking the reported NAWUN/NAWUPF. For PCIe transport devices maybe we could consider adding an additional heuristic based on something like PLP or VWC? -- Martin K. Petersen