Hello, I have been playing with scsi_debug and found that there is no way how to change the minimum_io_size (OPTIMAL TRANSFER LENGTH GRANULARITY reported by VPD 0xb0). The current module has minimum_io_size always set to physical_block_size. So here comes a small patch which add a new option to this module to be able to set it independently to the physical_block_size. Default behavior is to keep the minimum_io_size equal to the physical_block_size. Lukas Lukas Herbolt (1): scsi_debug: Add OPTIMAL TRANSFER LENGTH GRANULARITY option. drivers/scsi/scsi_debug.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html