Hi Folks, I'm running KVM on Debian squeeze. I have some requirements on a new VM to provide customised BIOS vendor/product strings, from my experience so far this is accomplish with the sysinfo/smbios support. So I have added these to the XML file for my VM. I found 'virsh edit' is the recommended way to make changes to a VM configuration, I find the XML file is not referenced at boot, it is only saved to with 'virsh dumpxml'. 'virsh edit' will update both areas - hypervisor and XML file. Unfortunately the changes I make for smbios and sysinfo (as below) while editing don't appear to be accepted when saving with 'virsh edit'. After saving I receive "Domain HMC XML configuration edited." but the XML file remains unmodified. I wonder if they are perhaps not supported with virsh edit yet? <sysinfo type='smbios'> <bios> <entry name='vendor'>xxx xxx</entry> <entry name='version'>xxx</entry> </bios> <system> <entry name='product'>xxx</entry> <entry name='version'>xxx</entry> <entry name='manufacturer'>xxx xxx</entry> </system> </sysinfo> <os> <type arch='x86_64' machine='pc-0.12'>hvm</type> <boot dev='cdrom'/> <smbios mode='sysinfo'/> </os> Thanks in advance, Derek
On Wed, Aug 24, 2011 at 04:02:45PM +1200, Derek wrote:
Unfortunately the changes I make for smbios and sysinfo (as below) while editing don't appear to be accepted when saving with 'virsh edit'. After saving I receive "Domain HMC XML configuration edited." but the XML file remains unmodified. I wonder if they are perhaps not supported with virsh edit yet?
This is just a general problem with virsh edit: it doesn't validate the XML, and it doesn't offer to re-edit invalid changes. Thus whenever you make a mistake in the XML it gets dropped. For more info and a proposed fix see this thread: https://www.redhat.com/archives/libvir-list/2011-August/thread.html#00660 To workaround this, do it the old way: virsh dumpxml HMC > hmc.xml edit hmc.xml virsh define hmc.xml iterate edit/virsh define steps until you get it right Which version of libvirt? According to the documentation <sysinfo> was added in 0.8.7. The fragment below looks reasonable, but there could be an XML error in the context of the whole XML document.
<sysinfo type='smbios'> <bios> <entry name='vendor'>xxx xxx</entry> <entry name='version'>xxx</entry> </bios> <system> <entry name='product'>xxx</entry> <entry name='version'>xxx</entry> <entry name='manufacturer'>xxx xxx</entry> </system> </sysinfo> <os> <type arch='x86_64' machine='pc-0.12'>hvm</type> <boot dev='cdrom'/> <smbios mode='sysinfo'/> </os>
Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top
Thanks Richard, It was the libvirt version. Upgraded the package using squeeze-backports in debian and it worked without any changes. Cheers, Derek On 25/08/2011, at 1:41 AM, Richard W.M. Jones wrote:
On Wed, Aug 24, 2011 at 04:02:45PM +1200, Derek wrote:
Unfortunately the changes I make for smbios and sysinfo (as below) while editing don't appear to be accepted when saving with 'virsh edit'. After saving I receive "Domain HMC XML configuration edited." but the XML file remains unmodified. I wonder if they are perhaps not supported with virsh edit yet?
This is just a general problem with virsh edit: it doesn't validate the XML, and it doesn't offer to re-edit invalid changes. Thus whenever you make a mistake in the XML it gets dropped.
For more info and a proposed fix see this thread:
https://www.redhat.com/archives/libvir-list/2011-August/thread.html#00660
To workaround this, do it the old way:
virsh dumpxml HMC > hmc.xml edit hmc.xml virsh define hmc.xml iterate edit/virsh define steps until you get it right
Which version of libvirt? According to the documentation <sysinfo> was added in 0.8.7.
The fragment below looks reasonable, but there could be an XML error in the context of the whole XML document.
<sysinfo type='smbios'> <bios> <entry name='vendor'>xxx xxx</entry> <entry name='version'>xxx</entry> </bios> <system> <entry name='product'>xxx</entry> <entry name='version'>xxx</entry> <entry name='manufacturer'>xxx xxx</entry> </system> </sysinfo> <os> <type arch='x86_64' machine='pc-0.12'>hvm</type> <boot dev='cdrom'/> <smbios mode='sysinfo'/> </os>
Rich.
-- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top
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Derek -
Richard W.M. Jones