Re: [CentOS-virt] CentOS 7 Xen 4.12 libvirt/virt-manager wrong path for qemu-system-i386

2019-05-05 Thread Pasi Kärkkäinen 
On Sun, May 05, 2019 at 02:23:22PM +0300, Pasi Kärkkäinen wrote:
> Hello,
> 
> While testing Virt-SIG Xen 4.12 rpms on CentOS7 I noticed the following 
> problem with libvirt/virt-manager when manually installing a new HVM guest 
> from virt-manager GUI.. basicly the VM installation won't start, because 
> libvirt/virt-manager is not able to start the VM, due to "missing" 
> qemu-system-i386 binary:
> 
> Unable to complete install: 'unsupported configuration: emulator 
> '/usr/lib/xen/bin/qemu-system-i386' not found'
> 
> Traceback (most recent call last):
>   File "/usr/share/virt-manager/virtManager/asyncjob.py", line 89, in 
> cb_wrapper
> callback(asyncjob, *args, **kwargs)
>   File "/usr/share/virt-manager/virtManager/create.py", line 2553, in 
> _do_async_install
> guest.start_install(meter=meter)
>   File "/usr/share/virt-manager/virtinst/guest.py", line 498, in start_install
> doboot, transient)
>   File "/usr/share/virt-manager/virtinst/guest.py", line 434, in _create_guest
> domain = self.conn.createXML(install_xml or final_xml, 0)
>   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3725, in 
> createXML
> if ret is None:raise libvirtError('virDomainCreateXML() failed', 
> conn=self)
> libvirtError: unsupported configuration: emulator 
> '/usr/lib/xen/bin/qemu-system-i386' not found
> 
> 
> Quick'n'dirty fix is to create a symlink:
> 
>   ln -s /usr/lib64/xen/bin/qemu-system-i386 
> /usr/lib/xen/bin/qemu-system-i386
> 
> .. after creating that symlink the VM can be started just fine and works OK.
> 
> We need to fix that default directory path for qemu-system-i386 to be correct 
> out-of-the-box..
> 

Oh, I forgot to paste the rpm versions I have:

libvirt-daemon-config-network-4.10.0-3.xen412.el7.x86_64
libvirt-libs-4.10.0-3.xen412.el7.x86_64
libvirt-python-4.5.0-1.el7.x86_64
libvirt-daemon-4.10.0-3.xen412.el7.x86_64
libvirt-daemon-driver-network-4.10.0-3.xen412.el7.x86_64
libvirt-daemon-driver-libxl-4.10.0-3.xen412.el7.x86_64
libvirt-bash-completion-4.10.0-3.xen412.el7.x86_64
libvirt-client-4.10.0-3.xen412.el7.x86_64
libvirt-glib-1.0.0-1.el7.x86_64

virt-manager-common-1.5.0-1.el7.noarch
virt-manager-1.5.0-1.el7.noarch
virt-viewer-5.0-11.el7.x86_64

xen-runtime-4.12.0-1.el7.x86_64
xen-libs-4.12.0-1.el7.x86_64
xen-ovmf-20180825-1.gitef529e6ab.el7.x86_64
centos-release-xen-common-8-7.el7.centos.x86_64
centos-release-xen-412-8-7.el7.centos.x86_64
qemu-xen-4.12.0-1.el7.x86_64
xen-4.12.0-1.el7.x86_64
xen-hypervisor-4.12.0-1.el7.x86_64
xen-livepatch-build-tools-4.12.0-1.el7.x86_64
xen-licenses-4.12.0-1.el7.x86_64


-- Pasi

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[CentOS-virt] CentOS 7 Xen 4.12 libvirt/virt-manager wrong path for qemu-system-i386

2019-05-05 Thread Pasi Kärkkäinen 
Hello,

While testing Virt-SIG Xen 4.12 rpms on CentOS7 I noticed the following problem 
with libvirt/virt-manager when manually installing a new HVM guest from 
virt-manager GUI.. basicly the VM installation won't start, because 
libvirt/virt-manager is not able to start the VM, due to "missing" 
qemu-system-i386 binary:

Unable to complete install: 'unsupported configuration: emulator 
'/usr/lib/xen/bin/qemu-system-i386' not found'

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 89, in cb_wrapper
callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/create.py", line 2553, in 
_do_async_install
guest.start_install(meter=meter)
  File "/usr/share/virt-manager/virtinst/guest.py", line 498, in start_install
doboot, transient)
  File "/usr/share/virt-manager/virtinst/guest.py", line 434, in _create_guest
domain = self.conn.createXML(install_xml or final_xml, 0)
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3725, in createXML
if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self)
libvirtError: unsupported configuration: emulator 
'/usr/lib/xen/bin/qemu-system-i386' not found


Quick'n'dirty fix is to create a symlink:

ln -s /usr/lib64/xen/bin/qemu-system-i386 
/usr/lib/xen/bin/qemu-system-i386

.. after creating that symlink the VM can be started just fine and works OK.

We need to fix that default directory path for qemu-system-i386 to be correct 
out-of-the-box..


Thanks,

-- Pasi

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[CentOS-virt] Centos7 Xen hypervisor console= options broken in default grub2 config

2019-05-05 Thread Pasi Kärkkäinen 
Hello,

While testing Virt-SIG Xen 4.12 rpms on CentOS 7, I noticed the default Xen 
hypervisor console= option parameters are broken, and result in an error from 
Xen, and no output on the physical vga console:

>From xen dmesg:

(XEN) Bad console= option 'tty'
 Xen 4.12.0-1.el7
(XEN) Xen version 4.12.0-1.el7 (mockbu...@centos.org) (gcc (GCC) 4.8.5 20150623 
(Red Hat 4.8.5-36)) debug=n  Tue Apr  2 13:09:41 UTC 2019
(XEN) Latest ChangeSet:
(XEN) Bootloader: GRUB 2.02~beta2
(XEN) Command line: placeholder dom0_mem=1024M,max:1024M cpuinfo 
com1=115200,8n1 console=com1,tty loglvl=all guest_loglvl=all

.. and indeed, 'tty' is not a valid option for Xen hypervisor console= 
parameter. 
That can be easily fixed in "/etc/sysconfig/grub", and executing 
"grub2-mkconfig -o /boot/grub2/grub.cfg" afterwards, but we should fix the 
default..

Here is the working setting (console=com1,vga, instead of console=com1,tty):

# grep GRUB_CMDLINE_XEN_DEFAULT /etc/sysconfig/grub
GRUB_CMDLINE_XEN_DEFAULT="dom0_mem=1024M,max:1024M cpuinfo com1=115200,8n1 
console=com1,vga loglvl=all guest_loglvl=all"


Thanks,

-- Pasi

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