>>>>> "Jamie" == Jamie Lokier <jamie@xxxxxxxxxxxxx> writes: Jamie> Where it is due to specific values being not exactly right - Jamie> like the subdevice offset (or modulo-offset) in MD because it Jamie> doesn't represent all subdevices - it would be good for the Jamie> info to have flags saying which _specific_ values are not Jamie> exactly right. You get that traversing the sysfs tree. Jamie> So that programs can choose their heuristics appropriately. Jamie> After all, users will use suboptimal layouts, and still want Jamie> the best performance it can do. I'd like to keep a clear distinction between normal applications and programs like mkfs. I'm targeting the latter. Given that filesystems can lay out files at will, I/O characteristics for normal applications is really FIEMAP territory. -- 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
