Hi Andy, Thank you very much for the reply and advise. I will start developing using other frameworks as suggested with an option to port it to TCMU in future. Thank you, Regards Bala On Fri, Jun 12, 2015 at 6:43 PM, Andy Grover <agrover@xxxxxxxxxx> wrote: > On 06/12/2015 02:38 AM, Bala wrote: >> >> I am new to this list so apologies if I am posting this in the wrong list. >> >> I would like to implement a virtual SCSI device for Optical drive with >> read & write support. >> >> I prefer to implement it in user space due to its simplicity. I came >> here to ask your help in choosing the frame work to implement this: >> SCST or LIO >> >> I think both offers frame works to implement this in user space. >> However, I am unsure of the extensive support these two, scst_user & >> tcmu, provides support for Optical Drive SCSI commands. >> >> I would be grateful if you could kindly let me know whether the >> followings are possible. >> >> 1. Can Optical Disc writing and other related commands be implemented >> using TCMU? >> 2. Does TCMU has any limitation to achieve the goal? >> 3. Would scst_user offer better support for implementing this. >> 4. Would tcmu performance enough for Bluray movie playback. > > > Hi Bala, > > For TCMUv2, everything's just buffers and data. Optical disc SCSI commands > will get passed to userspace just like everything else, so I don't see why > not. Regarding SCST I really can't say from a technical perspective which > might be better, but I will say that TCMU is still in development and a > corrected version (TCMUv2) still has not made it into a released kernel. You > might start implementing this on SCST, or alternatively tgt. Once you have > it working on one target, you or someone else could adapt it to any other > target relatively easily. > > Happy hacking, and please let us know how it goes! :-) > > Regards -- Andy > -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
