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    |   xen-users
Re: [Xen-users] any Install howto for FreeBSD as domU with netbsd as	dom 
| The way the initial memory space gets setup there is no way MFS could
work. It wasn't an anticipated use. I guess somewhere either in FreeBSD
GNATS or xen's bugzilla there should be i386-xen FreeBSD bugs filed for
me to track. 
 -Kip
 
 
 On 11/14/05, Chris Brookes <cbrookes@xxxxxxxxx> wrote:
On 13/11/05, Rainer Brinkmöller <rainer.brinkmoeller@xxxxxx> wrote:
 > (http://www.netbsd.org/Ports/xen/howto.html
)? Is there a special FreeBSD
 > kernel (like freebsd-domU and freebsd-instll)
 
 I have been trying to build a freebsd53-domu-install image, so far
 without much luck. I took the boot.flp from FreeBSD5.3-RELEASE
,
 mounted it, and took out the mfsroot.gz file, which I unzipped.
 
 I first built a FreeBSD 5.3 kernel using Kip's instructions, which
 managed to spring to life as a DOMU with no issues, both obviously it
 wouldn't boot or do much beyond print device info.
 
 Next, I compiled a new kernel with MD_ROOT_SIZE and MD_ROOT set, and
 then used the instructions here:
 (
http://docs.freebsd.org/cgi/getmsg.cgi?fetch=4169710+0+archive/2005/freebsd-questions/20050327.freebsd-questions)
 
 ... to try and embed my mfsroot in to the kernel. This worked fine,
 well, the root file went in to the kernel anyway. When booting the
 newly create image (using
 "vfs.root.mountfrom=ufs:md0,boot_verbose=yes" on the command line) ..
 the domain crashes immediately and I get no output. Both my Xen and
 FreeBSD knowledge are a bit light at this time, so I didn't go much
 further with this yet.
 
 I also discovered this document:
 http://ezine.daemonnews.org/200211/monolithic-kernel.html, describing
 how to link a root file system in to a compiled kernel. I read through
 the simple patch that modifies sys/md/md.c and a couple of other
 things, and it looked easy enough, so I manually applied the patch to
 the 5.3 xen kernel source, and followed the instructions. I ended up
 with another kernel + root image that looked good, but again it
 wouldn't boot as a domU, and blew up without printing any console
 messages (that I could see when I launched it with xm create)
 
 Has anyone else done this already, or am I trying to do something
 that's just not possible?
 
 Regards
 
 Chris
 
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