Thanks again Paolo, I used your string and read the documents in the site you referred me to but could not understand why doesn't it accept the xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0' string. I tried it on the following version: Compiled against library: libvir 0.9.8 Using library: libvir 0.9.8 Using API: QEMU 0.9.8 Running hypervisor: QEMU 1.0.0 So according to the site it should be supported. Any idea what am I missing now? Naor -----Original Message----- From: Paolo Bonzini [mailto:pbonzini@xxxxxxxxxx] Sent: Tuesday, July 16, 2013 9:42 AM To: Naor Shlomo Cc: kvm@xxxxxxxxxxxxxxx Subject: Re: Disabling mergeable rx buffers for the guest Il 16/07/2013 08:40, Naor Shlomo ha scritto: > Hi Paolo and thanks for your quick reply, > > I tried editing (virsh edit) the domain's XML and put the XML excerpt you gave me everywhere but with no success. > The moment I exit the edit mode the text was gone (I guess it didn't pass some sort of sanity and that's why it was automatically erased). > > What am I doing wrong? My fault. You need to change the <domain> opening tag to <domain type='qemu' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> See http://libvirt.org/drvqemu.html#qemucommand for the docs. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html