Tejun, Hannes, Currently, in libata-scsi.c, the function ata_scsi_zbc_in_xlat translating ZBC REPORT ZONES into the ZAC version returns an error if the scsi command buffer length is not aligned on 512. This is possible since the ZBC version allows report zones buffer as a multiple of 64B, while the ZAC version of the same command requires 512B size alignment of the command buffer. However, SAT-4, in section 9.13.3 says: "The SATL shall send the ATA REPORT ZONES EXT command with the ATA RETURN PAGE COUNT field set to INT((ALLOCATION LENGTH + 511)/512)." So clearly, instead of returning an error, we need to bounce the scsi command buffer to a bigger 512B size aligned temporary buffer for the ZAC report zones. I do not see any code ready to use to do so easily, but I may be missing it. Is there something that can be used to do so or do I need to cook something ? Best regards. -- Damien Le Moal, Western Digital -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
