Locking a file backed mdconfig into memory
Peter C. Lai
peter at simons-rock.edu
Mon May 31 03:11:06 UTC 2010
On 2010-05-30 07:42:47PM -0700, Dave Hayes wrote:
> Garrett Cooper <yanefbsd at 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 at 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?
Run memtest86 on the first 300mb of ram lately?
Does your ramdisk crash at any size?
Peter C. Lai | Bard College at Simon's Rock
Systems Administrator | 84 Alford Rd.
Information Technology Svcs. | Gt. Barrington, MA 01230 USA
peter AT simons-rock.edu | (413) 528-7428
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