Hi Christoph, Thanks for your comments. Sorry for replying late since I was in vacation. On Fri, 1 Oct 2021 12:15:15 +0800 Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > On Thu, Sep 30, 2021 at 11:47:52AM +0800, Yanling Song wrote: > > This initial commit contains Ramaxel's spraid module. > > This is not a SCSI driver as it doesn't speak the SCSI protocol. In > fact it looks a lot like NVMe with weird enhancements. > > The driver also seems to have a lot of copy and paste from the NVMe > code without any attribution. Actually it is a SCSI driver, and it does register a scsi_host_template and host does send SCSI commands to our raid controller just like other raid controllers. You are right "it looks a lot like NVMe" since we believe the communication mechanism of NVME between host and the end device is good and it was leveraged when we designed the raid controller. That's why it looks like there are some code from NVME because the mechanism is the same.