Date: Mon, 24 Jun 2013 11:00:22 -0400 (EDT) From: Benjamin Kaduk <kaduk@MIT.EDU> To: Chip Senkbeil <chip.senkbeil@gmail.com> Cc: freebsd-doc@freebsd.org Subject: Re: Misprint in Architecture Handbook? Message-ID: <alpine.GSO.1.10.1306241058540.26275@multics.mit.edu> In-Reply-To: <CAEYw2Z6Ver9Q5zsRc%2BGpfamRN_cPpMOYctP2_1d=nN-SGKeO0Q@mail.gmail.com> References: <CAEYw2Z7nr3H-hcXm_%2BXPA=rFVH=ZdeYdjMOSJ8OmB5tBPz7JiA@mail.gmail.com> <CAEYw2Z6Ver9Q5zsRc%2BGpfamRN_cPpMOYctP2_1d=nN-SGKeO0Q@mail.gmail.com>
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On Sun, 23 Jun 2013, Chip Senkbeil wrote: > Hello, > > I was taking a look at the guide for SSDs and FreeBSD ( > http://www.freebsd.org/doc/en/articles/solid-state/index.html) and think > that there "might" be some old instructions. On the second page ( > http://www.freebsd.org/doc/en/articles/solid-state/kernel.html), the > instructions say to add "options MFS", "options MD_ROOT", and > "pseudo-device md" to your kernel configuration. I've been searching > briefly (very briefly) and came across a fairly old post ( > http://lists.freebsd.org/pipermail/freebsd-stable/2005-May/015115.html) > claiming that pseudo-device is no longer used or is at least deprecated. > Trying to add that option gave me a syntax error; so, I'm going out on a > limb to say that the option isn't supported? I later found in the generic > kernel that the line "device md" is already in place with the comment > "Pseudo devices." > > Another issue (this may or may not be a fault of my own) is regarding > "options MFS" as a suggested addition to the configuration. Attempt to > include the option and build the kernel yields an unknown option error. > I'll be digging around, but if this is blatantly no longer the correct > option, please let me know! > > The final option regarding MD_ROOT was already included in the generic > kernel; so, I guess that's fine to still reference. > > I haven't taken a look at the later pages since I wasn't able to build the > kernel. Since I'm not very familiar with FreeBSD, I wouldn't know what to > look for in terms of outdated material. If this page is indeed out of date, > it might be worth adding to the backlog to take a look at the rest of the > SSD material to ensure it isn't old. Hi Chip, I believe you are correct; unfortuately, the architecture handbook has many places which are woefully out of date, and there is no ETA for fixes. Could you file a PR or three noting these issues? (http://www.freebsd.org/send-pr.html) Thanks, Ben Kaduk
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