Hi Martin/Chris, I was going through below discussion as well as going through linux scsi code to know if linux scsi stack support NDOB. It looks like current scsi stack does not have support of NDOB. From below thread, it looks like NDOB is not good way to support considering lack of device level support is not stable. Below is bit old discussion, so want to understand if current situation is good to introduce NDOB support (considering underlying device works as expected with NDOB) ? https://lore.kernel.org/patchwork/patch/673046/ One more question. What happens if WS w/ UNMAP command is passed to the device without zeroed data out buffer in current scsi stack ? Will it permanently disable WS on that device ? Thanks, Kashyap
