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.
