Re: [libvirt] Problem with fullyvirtualized guest direct kernel boot

On Wed, Nov 05, 2008 at 09:28:16PM +0300, Max Martynov wrote: > Hi All, > > I am trying to use fullyvirtualized guest direct kernel boot, but all I see > is the following error: > libvir: Xen Daemon error : POST operation failed: (xend.err 'Error creating > domain: (2, \'Invalid kernel\', "elf_xen_note_check: ERROR: Not a Xen-ELF > image: No ELF notes or \'__xen_guest\' section found.\\n")') > > Kernel, initrd and root file system are extracted from working Fedora 9 disk > image without any additional tinkering. Guest Fedora is clean and was > installed from scratch. When I use this whole disk image with > fullyvirtualized guest BIOS boot with, everything works fine. I also tried > paravirtualized guest bootloader with another linux kernel and it also works > fine. Xen version is 3.2.1-rc1-pre. Host OS is Ubuntu Hardy. That Xen is too probably old - you need 3.3.x or newer. The Xen 3.2 in Fedora has a backport of this functionality, and I doubt the Ubuntu xen has copied that.

> Here is the libvirt config for direct kernel boot: > <domain type='xen' id='18'> > <name>test1</name> > <uuid>4dea22b31d52d8f32516782e98ab3fa0</uuid> > <os> > <type>linux</type> This tag is telling Xen todo a paravirt guest, but you say you want a fullvirt one, so replace this with <type>hvm</type>

> <loader>/usr/lib/xen/boot/hvmloader</loader> > <kernel>/tmp/vmlinuz-2.6.25-14.fc9.i686</kernel> > <initrd>/tmp/initrd-2.6.25-14.fc9.i686.img</initrd> > <root>/dev/sda1</root> > <cmdline>ro</cmdline> > </os> > <memory>524288</memory> > <vcpu>1</vcpu> > <devices> > <emulator>/usr/lib/xen/bin/qemu-dm</emulator> > <disk type='file'> > <driver name="tap" type="aio"/> > <source file='/tmp/f9_disassembled/root.img'/> > <target dev='sda1'/> > </disk> > <disk type='file'> > <driver name="tap" type="aio"/> > <source file='/tmp/swap'/> > <target dev='sda3'/> > </disk> > <interface type='bridge'> > <source bridge='eth0'/> > <mac address='00:16:3e:5d:c7:9e'/> > <script path='/etc/xen/scripts/vif-bridge'/> > </interface> > <graphics type='vnc' port='5904'/> > </devices> > </domain> > > Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|