Date: Sun, 18 Apr 2010 21:17:53 +0200 From: Juergen Lock <nox@jelal.kn-bremen.de> To: Xiaodong Yi <xdong.yi@gmail.com>, freebsd-emulation@FreeBSD.org Subject: Testing Luvalley with FreeBSD as dom0 Message-ID: <20100418191752.GA72730@triton8.kn-bremen.de>
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Hi! I had been watching the Luvalley project for a while, http://sourceforge.net/projects/luvalley/files/ http://sunet.dl.sourceforge.net/project/luvalley/luvalley/luvalley-7/README http://www.mail-archive.com/kvm@vger.kernel.org/msg11896.html and a few weeks ago I was able to run Linux and FreeBSD domU.s on a Linux dom0 on my box for the first time, and then I ported a version of qemu-kvm 0.12.3 that Xiaodong Yi (Luvalley author) had adapted to Luvalley to FreeBSD and got that running domU.s with FreeBSD as dom0 too. :) At the moment Luvalley still has major issues and is far from being production-ready yet, but for FreeBSD users who want have a look for themselves I've now made an experimental port of the mentioned qemu-kvm-luvalley 0.12.3: http://people.freebsd.org/~nox/qemu/luvalley/qemu-kvm-luvalley-0.12.3.shar If you want to test it without deinstalling a qemu port you can build the port with DISABLE_CONFLICTS=yes and run the Luvalley qemu-kvm from within the build dir: work/qemu-kvm-0.12.3/x86_64-softmmu/qemu-system-x86_64 ... resp. work/qemu-kvm-0.12.3/i386-softmmu/qemu ... And before I forget, your cpu needs to be amd64/x86_64/em64t (i.e., able to run 64 bit) and it needs to have Intel VT or AMD-V aka vmx or svm. I only tested amd64 dom0s (Linux and FreeBSD stable/8), but afaik i386 dom0s are supported as well. And this is still experimental code, it may crash, eat your dog, whatever... Here is the pkg-descr: Luvalley is a lightweight type-1 Virtual Machine Monitor (VMM) with novel architecture, to enable any OS to run virtual machines by utilizing hardware virtualization extensions such as Intel VT and AMD-V. This is an experimental port of qemu-kvm adapted to Luvalley by Xiaodong Yi (Luvalley author - files/patch-luvalley) and preliminary patched for FreeBSD my me (nox, files/patch-z-kvm-bsd) so that FreeBSD can run domU (guests) using Luvalley. Luvalley still has many limitations and is definitely far from being production-ready, but it already seems to be able to run domUs partway faster than kqemu with -kernel-kqemu. :) (and also works better than kqemu for amd64 domUs.) Note: You need grub to boot the Luvalley `kernel', http://sourceforge.net/projects/luvalley/files/luvalley/luvalley-7/luvalley/download which (hopefully) will then boot the first disk again from which you _then_ select the FreeBSD slice for booting the FreeBSD loader and kernel to run as Luvalley dom0 if you want to test this port. More info is here: http://sunet.dl.sourceforge.net/project/luvalley/luvalley/luvalley-7/README Since FreeBSD users rarely have a grub installed I've made a grub iso with a menu.lst configured to boot the Luvalley `kernel' from /boot/luvally on the root of the first FreeBSD slice on the first disk (if your FreeBSD install is elsewhere you have to either edit the grub menu entry on the fly using grub's `e'dit command or unpack the iso using e.g. bsdtar, edit the menu.lst, and then make a new iso, see the README.txt within the iso.) http://people.freebsd.org/~nox/qemu/luvalley/grub-luvalley.iso If you have a working serial port (`COM1' aka /dev/tty[du]0) you can try to catch Luvalley's debug messages (115200bps, 8N1), this is especially useful should Luvally crash, otherwise there's probably no chance to fix the bug. One known crash at the moment happens when Luvalley runs out of ioctl object slots of which by default there are only 32 ("IOCTL_SIZE" in the Luvalley source, I haven't tried to build that on FreeBSD yet) and atm they never get released so in practice for the moment you should reboot your dom0 (FreeBSD) after running a few domUs to avoid that crash. Another known problem is atm when a domU shuts down the luvally qemu will hang and you have to manually kill it. WWW: http://sourceforge.net/projects/luvalley/files/
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