On Thu, Oct 12, 2017 at 2:43 AM, Mike Larkin <mlar...@azathoth.net> wrote: > On Thu, Oct 12, 2017 at 02:36:11AM +0300, Rostislav Krasny wrote: >> On Thu, Oct 12, 2017 at 1:10 AM, Stefan Sperling <s...@stsp.name> wrote: >> > On Thu, Oct 12, 2017 at 12:18:52AM +0300, Rostislav Krasny wrote: >> >> You just lose users and popularity. >> > >> > In this community, your statement has the opposite effect of what it is >> > trying to achieve. It puts developers off and discourages them from >> > worrying about your problem. >> > >> > At any given moment, there are enough problems developers have to worry >> > about already. Hardware they want to use which does not work yet, new >> > problems people report in code they've recently changed, chasing new >> > developments in code they've ported from other projects, new features >> > they want to implement, etc. etc.; all stacked against limited time. >> > Worrying about popularity on top of it all would just be distracting. >> > >> > The mindset here is that if you really want something fixed in OpenBSD, >> > try to fix it yourself, and then try to share your fix with the rest of us. >> > That's how, collectively, we produce value, and popularity has nothing to >> > do with it. >> >> I'm not familiar with the OpenBSD code and I even don't have a working >> OpenBSD system to try fixing it by myself. >> >> I think you can easily identify hard disks that are not part of any >> software RAID array and support only them when the RAID mode is >> enabled in BIOS. You can do it by looking for the 0xa92b4efc "Magic >> Number" of the RAID superblock at the end of the disk and at 4K from >> the beginning of the disk. If it's NOT present then this disk is not >> part of any RAID array and you may use it directly as in AHCI mode. It >> seems you don't have to understand the whole RAID metadata but only be >> able to identify its presence. >> >> I found it there: >> https://raid.wiki.kernel.org/index.php/RAID_superblock_formats >> https://github.com/neilbrown/mdadm/blob/master/md_p.h >> >> Also Intel officially recomends the mdadm tool and participated in its >> development, so the above information should be good: >> https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/rst-linux-paper.pdf >> === >> The recommended software RAID implementation in Linux* is the open >> source MD RAID package. Intel has enhanced MD RAID to support RST >> metadata and OROM and it is validated and supported by Intel for >> server platforms. >> === >> > > Sounds like you've already done most of the research. > > Your diff to implement this will be most welcome on tech@.
As I already told I'm not familiar with the OpenBSD code and I even don't have a working OpenBSD system to try fixing it by myself. I just googled for the technical information.
