On Mon, Nov 25, 2024 at 05:58:22AM +0000, 韦龙平(Groot) wrote: > > What is ZWL? And why mention 6.6? And why do you care about ordering? > ZWL is Zone-Write-Locking and it was replaced by Zone-Write-Plugging on 6.12. That's not a generally accepted acronym. But more importantly it's all gone now, so completely irrelevant. > > > There is no real ordering requirement in the block layer. > According to the design constraints of zoned device, write requests in the same > zone must be dispatched in order of address and there can be no holes in the middle Yes. But none of that matters at the device mapper layer. Either the submitter needs to ensure ordering, or you must use zone append.
