>>>>> "Tom" == Tom Yan <tom.ty89@xxxxxxxxx> writes: Tom> All drives I have are flash drives so none of them reports 4k Tom> physical sectors. There are plenty of SSDs that report 4K physical sectors, fwiw. Tom> The usb-storage driver does not read vpd so it won't be a thing, Tom> but the the uas driver does. We gave up on USB-SATA bridges long ago. Their designers appear to have a pretty comprehensive misunderstanding of both the ATA and SCSI protocols. We had higher hopes for UAS since it provided a clean slate. So far, however, the results are equally discouraging. Tom> I just feel like the kernel shouldn't bind values from totally Tom> different source (raid stripe vs vpd limit) to the same variable. RAID devices communicate the stripe width through the Block Limits VPD. -- Martin K. Petersen Oracle Linux Engineering -- 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