Date: Fri, 28 May 2010 17:49:38 -0700 From: Garrett Cooper <yanefbsd@gmail.com> To: Jeremy Chadwick <freebsd@jdc.parodius.com> Cc: freebsd-stable@freebsd.org, Clifton Royston <cliftonr@lava.net> Subject: Re: Locking a file backed mdconfig into memory Message-ID: <AANLkTikZNY1UwRbvRKq-w3STDoMIvnGxopy8gj9l2MCC@mail.gmail.com> In-Reply-To: <AANLkTikq8AJIlvIkWkGIaS6mlqWOAPreVY7ALs3AO98v@mail.gmail.com> References: <201005272348.o4RNmgWh014243@hugeraid.jetcafe.org> <20100528043006.GA18560@lava.net> <201005281757.o4SHvTwq020905@hugeraid.jetcafe.org> <20100528191828.GA83371@icarus.home.lan> <201005281926.o4SJQCW3041849@hugeraid.jetcafe.org> <20100528215837.GA86689@icarus.home.lan> <AANLkTikq8AJIlvIkWkGIaS6mlqWOAPreVY7ALs3AO98v@mail.gmail.com>
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On Fri, May 28, 2010 at 5:48 PM, Garrett Cooper <yanefbsd@gmail.com> wrote: > On Fri, May 28, 2010 at 2:58 PM, Jeremy Chadwick > <freebsd@jdc.parodius.com> wrote: >> On Fri, May 28, 2010 at 12:26:12PM -0700, Dave Hayes wrote: >>> Jeremy Chadwick <freebsd@jdc.parodius.com> writes: >>> > And I think you meant this for variable names, in addition to what >>> > vfs.root.mountfrom should be (specific to RELENG_8): >>> > mfsroot_load=3D"YES" >>> > mfsroot_type=3D"mfs_root" >>> > mfsroot_name=3D"/some/path/mfsroot" >>> >>> I'm using RELENG_7, but it seems rootfs_* works just like mfsroot_* ... >>> is the former deprecated? >> >> I spent a small bit of time looking through both RELENG_7 and RELENG_8 >> source (/usr/src) as well as /boot (for the Forth portion) and I was >> unable to find any reference to "rootfs" aside from actual variable >> names (not loader variables) in C code or include files. =A0None were >> strings. =A0There's a strong possibility I'm not looking the right way >> (grep -ri ...). > > I vaguely remember reading about rootfs in the past, but it's > definitely mfs_root now. > > This is how I do it in my quickie loader.rc: > > include /boot/loader.4th > set vfs.root.mountfrom=3D"ufs:/dev/md0" > load /kernel > load -t mfs_root /mfsroot > start > >> I can assure you that mfsroot_xxx works on both platforms because I >> wrote the below documentation: >> >> http://jdc.parodius.com/freebsd/pxeboot_serial_install.html >> >>> > vfs.root.mountfrom=3D"ufs:/dev/md0" >>> >>> Hm, 'ufs:md0' currently works. What trouble can be had from using >>> the abbreviated device name? >> >> I have no idea; probably none. =A0This is just the first time I've seen >> the variable set to something "shorthand". =A0I would have to review >> the parser code to see how it works. > > All depends on how you create the mfsroot. makefs(8) style mfsroots > for instance are like /dev/md0a blah. Ugh. Please ignore this statement. It's wrong.. > It also depends on your version of FreeBSD IIRC, because (again IIRC) > GEOM changed the status quo in either 7.x or 8.x as to how md(4) > devices represented. Again, this is IIRC :P!
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