I'm a student doing an OS project: build a software raid over the network. I intend to use existing software RAID program. The plan is that build the raid on a device that is not a real physical device, but a device I made up. I'll handle the I/O request through the network. I already wrote a simple device driver with all the required functions, and try to "mkraid" on the created new devices. But it failed with error: /dev/md0: Invalid arguments I want to know what information is needed to make mkraid, ... etc. run properly that they see it as a true hard disk. And what operations are needed to pass these information out. Thank you for your advices. - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html