Re: [libvirt] How to define QEMU/SMBIOS Attributes in virsh

On Wed, Jul 01, 2015 at 03:01:40PM +0200, Holger Schranz wrote: > Hello, > > I have a "request for Help" please. > > Myself: > I'm a native german language speaker and > I' work with qemu/virsh since 6 months now. > At the moment I try to define/configure qemu/smbios > attributes in a virsh xml-file. > > My current problem: > I need to configure two on-board lan elements. > Thanks to Gerd Hoffmann (Qemu group). He gave me the hint for > smbios/acpi configuration. For this configuration I need a > type 41 record. I found on http://libvirt.org some descriptions > for smbios but only for type 0 and 1. > > In qemu the solution is available: > > [Qemu-devel] [PATCH 2/2] smbios: Allow device ID instead of PCI address > http://lists.gnu.org/archive/html/qemu-devel/2013-11/msg02350.html > @@ -1336,9 +1338,10 @@ Specify SMBIOS type 0 fields Specify SMBIOS type 1 > fields > @item -smbios > type=41,address@hidden,address@hidden,address@hidden,status=on|off][,address@hidden|n}] > address@hidden -smbios > type=41,address@hidden,address@hidden,address@hidden,status=on|off][,address@hidden|n}] > Add SMBIOS type 41 fields (Onboard Devices Extended Information). Could be > specified multiple times for different devices. Mandatory options are > address@hidden in form "[[<domain>:]<bus>:]<slot>.<func>" and > address@hidden in form "[[<domain>:]<bus>:]<slot>.<func>" or @option{id}, > and > @option{instance} number. @option{instance} shoud be in range [1, 255] and > should be unique within specified @option{device-type}. > @option{designation} is > an optional string that somehow designates device. @option{status} is a > device > @@ -1365,6 +1368,9 @@ qemu-i386 \ > -netdev user,id=hostnet0 \ > -device e1000,netdev=hostnet0,id=net0,bus=pci.0,addr=0x1f \ > -smbios type=41,address=00:1f.0,instance=1,designation="NIC > 1",device-type=ethernet \ > +-netdev user,id=hostnet1 \ > +-device e1000,netdev=hostnet1,id=net1 \ > +-smbios type=41,id=net1,instance=2,designation="NIC 2",device-type=ethernet > \ > < ... other qemu options ... > > @end example > > So my question: How can I configure such record in a virsh xml-file please. There's no official support for SMBIOS type 41 fields in libvirt. Please do file a bug report requesting this feature against libvirt. Meanwhile your only option is to use custom command line passthrough in libvirt https://www.berrange.com/posts/2011/12/19/using-command-line-arg-monitor-... Regards, Daniel