virt June 2013

virt@lists.fedoraproject.org

7 participants
8 discussions

Windows clock synchronization
by Ján ONDREJ (SAL) 09 Jul '13

09 Jul '13

Hello, I have clock synchronization problems with Fedora 18/KVM host and windows server guests. Different 64bit windows servers, all has some time synchronization problems. 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. Thank you. SAL

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No iommu_group links in /sys/bus/pci/devices/
by Mario Ceresa 28 Jun '13

28 Jun '13

Dear all, following Cole's suggestions I installed the fedora-virt-preview repo and tried again with VGA passthrough from [1] 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iommu=pt iommu=1 to grub My system currently includes: * libvrit 1.0.6 * qemu 1.5.0 * kernel 3.9.6 Maybe the kernel is outdated?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, Best regards, Mario [1] https://bbs.archlinux.org/viewtopic.php?id=162768

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Fatal PCIe error 928 on KVM GPU Passthrough
by Mario Ceresa 21 Jun '13

21 Jun '13

Dear all, does anybody know if it is currently possible to do GPU passthrough in kvm? I have access to a dual Quadro 4000 setup and I would like to pass the second one to kvm for use in a VM. I read a lot on internet and it seems feasible [1, 2, 3] and there is even a reported success case [5]. However when I start the VM the host reboots with PCIe error 928: Completion timeout. My current setup is: * Fedora 18 with 3.9.4-200 x86_64 * dmesg | grep -e DMAR -e IOMMU shows that they are both enabled * nvidia driver installed from rpmfusion * I use vfio assignment as per [4] Thanks and regards, Mario [1] http://www.linux-kvm.org/page/VGA_device_assignment [2] https://bbs.archlinux.org/viewtopic.php?id=162768 [3] http://samos-it.com/removedetach-a-pci-device-linux-kvm-vga-passthrgough-nv… [4] https://fedoraproject.org/wiki/QA:Testcase_Virtualization_KVM_PCI_Device_As… [5] http://tavi-tech.blogspot.com.es/2012/05/vga-passthrough-kvm-fedora-17-and.…

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ANNOUNCE: virt-manager 0.10.0 released
by Cole Robinson 20 Jun '13

20 Jun '13

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: http://virt-manager.org/download.html The direct download links are: http://virt-manager.org/download/sources/virt-manager/virt-manager-0.10.0.t… 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! Thanks, Cole

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virt-manager user login, as user
by Frank Murphy 12 Jun '13

12 Jun '13

Have checked here, http://virt-manager.org/faq/ and http://libvirt.org/auth.html and El Google http://linuxnotes.us/archives/349 But I think it was js based? -- Regards, Frank - I check for new mail app. 20min www.frankly3d.com

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SOLVED Re: Raid1 Host, any gotchas?
by Frank Murphy 10 Jun '13

10 Jun '13

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. storage: /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) -- Regards, Frank - I check for new mail app. 20min www.frankly3d.com

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Raid1 Host, any gotchas?
by Frank Murphy 09 Jun '13

09 Jun '13

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? -- Regards, Frank - I check for new mail app. 20min www.frankly3d.com

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VM installation doesn't work!
by Arun SAG 09 Jun '13

09 Jun '13

Hi, 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 /var/cache/vm/iso/rhel-6.3.0_83-1.x86_64.iso --disk path=/var/cache/vm/vdisk/keptcarry-dl-vm1-201306080806.qcow2,size=100,cache=none --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 http://paste.fedoraproject.org/17433/07041241/ 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 http://zer0c00l.in/

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virt June 2013