Date: Sun, 30 May 2010 21:18:43 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Dave Hayes <dave@jetcafe.org> Cc: Garrett Cooper <yanefbsd@gmail.com>, freebsd-stable@freebsd.org, Clifton Royston <cliftonr@lava.net> Subject: Re: Locking a file backed mdconfig into memory Message-ID: <20100531041843.GA66732@icarus.home.lan> In-Reply-To: <201005310242.o4V2glZX057087@hugeraid.jetcafe.org> 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> <201005310242.o4V2glZX057087@hugeraid.jetcafe.org>
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On Sun, May 30, 2010 at 07:42:47PM -0700, Dave Hayes wrote: > Garrett Cooper <yanefbsd@gmail.com> writes: > > This is how I do it in my quickie loader.rc: > > include /boot/loader.4th > > set vfs.root.mountfrom="ufs:/dev/md0" > > load /kernel > > load -t mfs_root /mfsroot > > start > > I used to do exactly this back at FreeBSD 4.11 to boot off a cdrom. > Nice to know it still works this way. > > Jeremy Chadwick <freebsd@jdc.parodius.com> writes: > > However, what I'm having trouble understanding is what exactly > > preload_search_info() looks for and how all this actually connects > > and works. It appears to me that there are specific drivers located in > > src/sys/dev that are KLD-supported and others which are expected to be > > included in the kernel statically. > > Maybe this confusion explains why /dev/md0c is giving me random crashes > at the moment? > > Of course, another theory might be the size of my initial ramdisk > (300Mb). Would there any known bug where booting off a large ramdisk > causes unreadable panics to flash past the console too rapidly to view? Is the mfsroot file compressed (.gz extension)? Reason I ask is that the OP states he's using RELENG_7... http://jdc.parodius.com/freebsd/pxeboot_serial_install_7.html#step7 -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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