Mike, On 2/10/17 00:27, Mike Snitzer wrote: > Looks like this work has come a long way. While I am _still_ not > hearing from any customers (or partners) that SMR is a priority I do > acknowledge that that obviously isn't the case for WDC and others. > > So, I'll sign up for reviewing this DM target, with a focus on DM > interface and implementation details, _after_ I get some technical > review (e.g. Reviewed-by) from people like Hannes and others more > invested in the SMR technologies. Basically I don't know enough about > the constraints of these devices to fully appreciate and catch some > issue in the particulars of the algorithms used to mitigate SMR's > quirks. Fair enough. I understand. I would also like to let you know that I worked closely with Hannes and Martin and also Shaun Tauncheff (Seagate) to put together the final patches of the ZBC support for 4.10. I also contributed to part of the f2fs support for these devices, which also was included in 4.10. (And I also maintain the libzbc project in github) > I'd also like to understand how invested WDC is in maintaining this DM > target for years and years if/when I were to merge this DM target into > mainline. We are fully invested. I am part of the system software group in WD Research and one of our mission is to support Linux kernel and open source software in general. Bart (Van Assche), who I believe you know, is also a member of our group now that Sandisk and WD merger completed. Hannes and Christoph already sent some comments regarding the code. I will make appropriate changes and re-post the patch for review. Thank you. Best regards. -- Damien Le Moal, Ph.D. Sr. Manager, System Software Research Group, Western Digital Corporation Damien.LeMoal@xxxxxxx (+81) 0466-98-3593 (ext. 513593) 1 kirihara-cho, Fujisawa, Kanagawa, 252-0888 Japan www.wdc.com, www.hgst.com
