Re: FreeBSD-amd64 in Xen 4.0?
Janne Snabb wrote on Thu, Jan 20, 2011 at 02:56:28PM +: > On Thu, 20 Jan 2011, Martin Cracauer wrote: > > > Just to be clear: the disk file has to be a whole disk, with > > partitions, right? hvmloader would then proceed through the regular > > bootloaders in the boot sector? > > Short answer: yes. Thanks again. I think I'll stay with PV for now and if I want amd64/HVM I'll go the PXE boot route. I didn't try Xen's PXE support but it sounds much more attractive than having a BSD-labeled and BSD-filesystemed vnode file floating around in the Linux dom0. Plus I already have a PXE boot environment for all these guests. Martin -- %%% Martin Cracauerhttp://www.cons.org/cracauer/ ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
Re: FreeBSD-amd64 in Xen 4.0?
On Thu, 20 Jan 2011, Martin Cracauer wrote: > Just to be clear: the disk file has to be a whole disk, with > partitions, right? hvmloader would then proceed through the regular > bootloaders in the boot sector? Short answer: yes. Anything that should work on a real machine should work as the disk image of a Xen HVM instance. The simplest way is to run the sysinstall tool from an installation ISO that you attach to your virtual machine. It will create MBR partition table and BSD disklabel for you as well as install the required boot blocks/loaders. You could alternatively do the same steps manually, using mdconfig to attach your (empty) disk image file to an existing FreeBSD box as a virtual disk and do the required steps with tools such as fdisk, gpart, boot0cfg, disklabel, newfs, etc. and then move that image file to your Xen machine. You could also use a hard disk from an existing FreeBSD machine (a real one), attach that disk to another machine (or boot from USB stick) and read the whole hard disk image with dd or similar tool and use that as the virtual disk for the Xen HVM instance. -- Janne Snabb / EPIPE Communications sn...@epipe.com - http://epipe.com/ ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
Re: FreeBSD-amd64 in Xen 4.0?
Janne Snabb wrote on Thu, Jan 20, 2011 at 05:07:57AM +: > On Thu, 20 Jan 2011, Janne Snabb wrote: > > > I am not sure if this is the cause of your problem though, but your > > configuration might create an environment which is not suitable for > > the HVM kernel to run. > > Martin, > > I tried this out with Xen 4.0.1 and had the same effect as you: > "Xend died due to signal 11!" if I attempted loading the XENHVM > kernel with kernel = "/within/dom0/path/to/freebsd/kernel" in xen > config. > > With kernel = "/path/to/hvmloader" things work fine (the FreeBSD > kernel and boot loader residing within the virtual disk of the > virtual machine, the same way as it would be on a physical machine). > This is the proper way to use the amd64 XENHVM kernel. Thanks for the update. Just to be clear: the disk file has to be a whole disk, with partitions, right? hvmloader would then proceed through the regular bootloaders in the boot sector? Martin -- %%% Martin Cracauerhttp://www.cons.org/cracauer/ ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
Re: FreeBSD-amd64 in Xen 4.0?
On Thu, 20 Jan 2011, Janne Snabb wrote: > I am not sure if this is the cause of your problem though, but your > configuration might create an environment which is not suitable for > the HVM kernel to run. Martin, I tried this out with Xen 4.0.1 and had the same effect as you: "Xend died due to signal 11!" if I attempted loading the XENHVM kernel with kernel = "/within/dom0/path/to/freebsd/kernel" in xen config. With kernel = "/path/to/hvmloader" things work fine (the FreeBSD kernel and boot loader residing within the virtual disk of the virtual machine, the same way as it would be on a physical machine). This is the proper way to use the amd64 XENHVM kernel. Best Regards, -- Janne Snabb / EPIPE Communications sn...@epipe.com - http://epipe.com/ ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
Re: FreeBSD-amd64 in Xen 4.0?
On Wed, 19 Jan 2011, Martin Cracauer wrote: > I anyone able to run a amd64 FreeBSD guest in the Xen-4.0 that ships > with Debian-Squeeze? Dom0 is Debian's 2.6.32.25 Xen kernel. Hardware > is a Phenom II. My all test configurations are different... > I get a sig11 in xend. > > I compiled XENHVM on FreeBSD-9.0-current as of Jan 10. I am using > this Xen config file just to test booting the kernel: > > kernel = '/home/xen/boot/freebsd-amd64-90current-2011019-kernel' > memory = '256' > name = 'freebsd' > builder = 'hvm' > > (the builder= line is required, otherwise the python script doesn't > recognize the kernel as a valid kernel) ...but my understanding is that with HVM mode you normally have: kernel = "/usr/lib/xen/boot/hvmloader" ...(or similar) and the kernel gets loaded by the normal boot loader which is launched by hvmloader from the virtual machine's disk. In PV mode (builder = 'linux' which is the default) the kernel is loaded with the "kernel" configuration line unless py-grub or similar is in use. I am not sure if this is the cause of your problem though, but your configuration might create an environment which is not suitable for the HVM kernel to run. Note that amd64 XENHVM kernel is a HVM kernel (similar to GENERIC) with just additional support for XEN-specific PV drivers while the VM otherwise runs in HVM mode. PV kernel is only available for i386 (XEN kernel config file). That kernel should be loaded as you do now, but with "builder = 'linux'". Does it make a difference if you boot your VM from a normal (GENERIC amd64) installation ISO, install the system as usual to a virtual hard disk and then install the XENHVM kernel there? You will need to use VNC console briefly during installation until you can switch to using serial console. Best Regards, -- Janne Snabb / EPIPE Communications sn...@epipe.com - http://epipe.com/ ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
