Then you should definitely submit a bug with redhat about this, seems like a serious one. -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message ----- > From: "Gena Makhomed" <gmm@xxxxxxxxx> > To: centos-virt@xxxxxxxxxx > Sent: Wednesday, 29 July, 2015 23:09:14 > Subject: CentOS 7.1 + qemu-kvm-ev + SLIC acpitable windows bug workaround > On 29.07.2015 21:34, Nux! wrote: > >> Yes, you can. >> In fact you can use the binaries from the ovirt repo itself, no need to rebuild. > > Thank you! > > In fact - I can't use raw binaries from the ovirt repo itself, > because these qemu-kvm binaries contains one bug, > which is already fixed in Debian: > > If you want to migrate Windows from hardware node > to VM using CentOS 7.1 on hardware node and libvirt xml config: > > <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> > ..... > <qemu:commandline> > <qemu:arg value='-acpitable'/> > <qemu:arg value='file=/sys/firmware/acpi/tables/SLIC'/> > </qemu:commandline> > </domain> > > Winodws not working correctly in this case, because Windows requires, > what oem_id and oem_table_id from SLIC must be also placed > into oem_id and oem_table_id of RSDT. > > Debian version of qemu-kvm contains workaround for this windows bug, > and using Debian - Windows VM will works fine. But CentOS packages > does not contain such workaround, so qemu-kvm-ev now must be patched > manually with each new release. > > Patch already was created by Michael Tokarev in 2014: > this is file mjt-set-oem-in-rsdt-like-slic.diff > from https://packages.debian.org/jessie/qemu-kvm > > This patch cleanly applies also to qemu-kvm-ev-2.1.2-23.el7_1.3.1 > > See mjt-set-oem-in-rsdt-like-slic.diff > and qemu-kvm.spec.patch in attach for details. > > After executing rpmbuild -ba qemu-kvm.spec > you can place new qemu-kvm binaries into > /srv/download/centos/7/privat/x86_64/Packages > create local repo and use it for upgrading rpm packages, > for example, see privat.repo and privat-createrepo-7-x86_64 > in attach. > > ============================================================== > > Better if this workaround of Windows bug will be included > into RHEL/CentOS ovirt repo binaries, and this will allow > to anybody easy migrate Windows from hardware nodes > to VMs and easy run CentOS/RHEL at hardware nodes. > > > P.S. > After patching qemu-kvm - option > acpitable works without any bugs: > > # man qemu-kvm > > -acpitable [sig=str][...] > If a SLIC table is supplied to qemu, > then the oem_id from the SLIC table > will be copied into the RSDT table > (this is a Debian addition). > >> ----- Original Message ----- > >>> Is it possible to use binary packages build from >>> http://resources.ovirt.org/pub/ovirt-3.5/rpm/el7/SRPMS/qemu-kvm-ev-2.1.2-23.el7_1.3.1.src.rpm >>> with plain CentOS 7.1 and use all other packages from CentOS >>> (libvirt, virt-manager, etc) >>> >>> Is it have reasons, if I not use live migrations and qcow2 snapshots? >>> (instead use zfs, zvols and zfs snapshots for VM disks online backups) >>> >>> Is using qemu-kvm-ev with CentOS 7.1 have any disadvantages? > > -- > Best regards, > Gena > > _______________________________________________ > CentOS-virt mailing list > CentOS-virt@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos-virt _______________________________________________ CentOS-virt mailing list CentOS-virt@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos-virt
