On 17/08/2016 19:36, Nathan Whitehorn wrote: > OK, so then what is the solution here? We have a number of tools that need to > know this information: gpart, sade, bsdinstall, zfs, graid, etc. If we want to > have a consistent set of defaults -- for example, to use 4K across the board, > which I think is a good idea -- there should be a central place to set this > that > does not involve hacking a variety of independent tools. Do you disagree? > > I don't care how that happens. It happens that the way we currently encode > this > is geom stripesize. If we feel like we can't get this right in drivers, then > we > should provide a tunable to set a minimum default alignment. You could > implement > this in lots of different ways. But having static values hardcoded in random > places that makes similar tools (sade, gpart) behave inconsistently cannot > possibly be the answer. > > This is my point, from beginning to end. Is there any reason -- at all -- that > we should prefer per-tool one-off changes to fixing the central mechanism we > already have to give consistent results that we think are reliable?
It would be perfect to get a correct description of a disk and to do that in central place. But still I, as a user / administrator, want to be able to _force_ the alignment that I want when I partition a disk, create a filesystem, etc. That is, even if the kernel reports the perfectly correct information and the tools know how to automatically do what's best for me, I still want to eb able to override. And I think that installers and administrative tools should provide a way to do that. And many already do, e.g. 'gpart add -a X'. So, I do not see how striving for the better disk detection (in a central place) and having more knobs in the administration tools are mutually exclusive or conflicting goals. Just my two bits. -- Andriy Gapon _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
