I have clock synchronization problems with Fedora 18/KVM host and windows
server guests. Different 64bit windows servers, all has some time
Some of them will slow down time until time difference is 60 seconds and
then clock is synchronizes from internet. But 60 seconds is a long time.
Kerberos authentication sometimes files due to time skew.
Some machines will run OK day or two, but then clock stops. After some
hours clock is synchronized again and continues to work properly.
Curious, that during time is stopped, server works properly (except kerberos
authentications, which is very time sensitive.
For example, attaching 2 graphs from 2 windows servers. They show time
difference measured by check_mk nagios plugin. 10k means 10000 seconds.
How I should set clock/time/NTP on these guests?
I have absolutelly no problems with Linux guests, they work perfectly.
following Cole's suggestions I installed the fedora-virt-preview repo and
tried again with VGA
passthrough from 
For this setup i use a nvidia card as the primary one and a radeon hd 7850
as the passthrough device.
However, there are no iommu_group links neither under
/sys/bus/pci/devices/0000:05:00.0/ (which is my radeon card) nor under any
of the other devices.
AFAIG it should be the vfio module which creates these links so I guess
it's not working for me.
The driver loads correctly: there are no errors in dmesg and lsmod shows:
vfio_pci 32063 0
vfio 19210 1 vfio_pci
I added iommu=pt iommu=1 to grub
My system currently includes:
* libvrit 1.0.6
* qemu 1.5.0
* kernel 3.9.6
Maybe the kernel is outdated?
I know the functionality is experimental so it's just to know if I'm doing
some obvious mistakes.
Thanks for your help,
I'm happy to announce the release of virt-manager 0.10.0!
virt-manager is a desktop application for managing KVM and Xen virtual
machines via libvirt.
The release can be downloaded from:
The direct download links are:
This release includes:
- Merged code with python-virtinst. virtinst is no longer public
- Port from GTK2 to GTK3 (Daniel Berrange, Cole Robinson)
- Port from gconf to gsettings
- Port from autotools to python distutils
- Remove virt-manager-tui
- Remove HAL support
- IPv6 and static route virtual network support (Gene Czarcinski)
- virt-install: Add --cpu host-passthrough (Ken ICHIKAWA, Hu Tao)
To elaborate a bit on the first two:
* python-virtinst has been merged with virt-manager, and the virtinst
library is no longer public. This shouldn't be a surprise to anyone
following development over the last year. virt-manager now distributes
the virtinst tools virt-install, virt-clone, virt-image, and virt-convert.
* virt-manager has been ported to GTK3 and several other modern gnome
libraries. The newest version that have been tested are what is
shipped with Fedora 18, so nothing less than a year old. This version
may not work correctly on an older distro.
Thanks to everyone who has contributed to this release through testing,
bug reporting, submitting patches, and otherwise sending in feedback!
On Sun, 9 Jun 2013 09:06:51 +0100
Frank Murphy <frankly3d(a)gmail.com> wrote:
> This is an afterthought
> Have a Raid1 yum-server.x86_64 (incl raid1 /boot)
Took a chance worked a charm.
/dev/vda1 (/boot) from /dev/md0 (2gb)
/dev/vda2 (/) from /dev/md1 (40gb incl 10gb swap)
/dev/vda3 (/home) from /dev/md2 (30gb home)
/dev/md3 on the host is nfs automounted,
as /var/cache/yum. (1tb)
Frank - I check for new mail app. 20min
This is an afterthought
Have a Raid1 yum-server.x86_64 (incl raid1 /boot)
Would it be possible to create a single i686
guest for this, any gotchas.
Any experiences from anyone F18?
Frank - I check for new mail app. 20min
I tried to install RHEL 6 VM:
virt-install --connect qemu:///system --name
keptcarry-dl-vm1.host.com--ram 2048 --nographics --accelerate --vcpus
2 --noreboot --cdrom
--mac 00:50:56:35:c0:68 --network bridge:br0
Then i tried to access its console using 'sudo virsh console vmname' but
the VM installation is struck, i just see
Connected to domain keptcarry-dl-vm1.host.com
Escape character is ^]
I also managed to capture some logs here
I am running libvirt-0.9.11.9-1.fc17.x86_64 and
qemu-system-x86-1.0.1-6.fc17.x86_64 on a Fedora 17 machine
Arun S A G