On Tue, Mar 21, 2023 at 05:51:29PM +0900, Damien Le Moal wrote: > Interesting. We have never seen such issue in practice with the device mappers > that support zoned devices. But it seems interesting to try to find a use case > that could trigger this. Will look into it, and if everything is fixed, it would > still be a good regression test for blocktest. I think it requires a non-zoneappend bio that is large enough to require splitting and which goes through a remapper.