KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, ...

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Unable to init server: Could not connect: Connection refused Gtk couldn't be initialized [on hold]

I try to open virt-manager in ssh session, but get following: -bash-4.2# virt-manager -bash-4.2# Unable to init server: Could not connect: Connection refused Gtk couldn't be initialized this is my ...
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1answer
33 views

KVM bridged network like in virtualbox

I have a server with 3 NIC's with OpenSUSE 13.2 and KVM installed. I have installed Debian as guest. My network is 192.168.88.0/24, DHCP server is at 192.168.88.1. Now I want my guest to also get a ...
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2answers
30 views

internal error: unable to execute QEMU command 'cont': Resetting the Virtual Machine is required

I try to install a kvm img in my vps, but after i install it, it show root@wz:~# virsh list Id Name State ---------------------------------------------------- 12 ...
1
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9 views

When i use virt-install --import, virsh vol-list --pool default return null

I upload my guaji.img file to server, and use following code: sudo virt-install -n guaji -r 512 --os-type=windows --os-variant=winxp --disk #{to_rmt},device=disk,bus=virtio --noautoconsole --import ...
2
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1answer
20 views

libvirt - Restart VMs after return from power failure?

Is there any way to make KVM automatically restart any VMs that have been shut down due to power failure? Here is my scenario: I run a small VM tank, mostly with development VMs on it. I now have a VM ...
0
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1answer
29 views

Snort in KVM machines

I have installed two physical machines with KVM virtualization using Red hat as OS ( h1 and h2). In h1 I have installed the virtual machines w1 and db1 and in h2 the virtual machines w2 , db1 and ids. ...
4
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2answers
314 views

Optimize SSD storage on Centos 6.6 - KVM

I have a Dell R610 with hardware: H700 raid card 4xMicron MX100 512GB -> configured raid 10 I have installed Centos 6.6 on this server and configured: KVM virtualization Volume Group for raid 10 ...
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2answers
54 views

Assigning video card to KVM guest VM with PCI-Pass Through

This is on Ubuntu 12.04LTS using KVM. The system has a graphics card which is visible to the hypervisor's kernel shown as follows: # virsh nodedev-dumpxml pci_0000_21_00_0 <device> ...
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6 views

Transfer VM without shutting it down? [migrated]

Is it possible to transfer a VirtualBox VM from one server to another without shutting it down? Is there any way to achive this? Does this technology have a name to identify it? As far as I know Xen ...
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1answer
40 views

can't ssh into KVM VM despite using bridged network

I'm trying to access a KVM virtual machine running inside my company's network. I am VPN'ed into the network from my laptop and can ssh into other VMs, and I set up my VM to use a bridged network for ...
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1answer
36 views

Cgroups with libvirt/kvm on Centos 6.5

i am trying to limit all the memory used by virtual machines to a particular value. on ubuntu servers setting limit to "libvirt-qemu " solves the issue.But in case of Centos,it creates ...
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13 views

Run qemu in Ubuntu Server(inside VirtualBox) error [duplicate]

I'm running qemu for virtualization in my ubuntu server which is vm inside virtualbox. It reports such an error: Could not access KVM kernel module: No such file or directory. I did some digging ...
2
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1answer
64 views

ZFS on Linux + KVM Steals Memory

I'm having an issue with a CentOS 7 server where I have a single ZFS pool created along with (currently) a single running KVM VM (CentOS 6 guest). Top is reporting that the VM is using about 50% of my ...
0
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1answer
20 views

Qcow2 images growing far beyond what they should

I am using ubuntu 12.04 and have seen this: https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1025244 Our qcow2 images are growing far beyond what they should... with some of them growing to as ...
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0answers
34 views

Packet loss between windows guest and Ubuntu 14.04 host

We are seeing packet loss between one of our Ubuntu 14.04 hosts and a KVM guest running Windows 2008 R2. The loss only shows up at high loads. Similarly loaded machines running 12.04 do not exhibit ...
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0answers
27 views

OpenStack Live-Migration VNC server error

I am following steps in : https://www.mirantis.com/blog/tutorial-openstack-live-migration-with-kvm-hypervisor-and-nfs-shared-storage/ But got a following error, when i try doing live-migration: ...
0
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1answer
50 views

qemu, kvm: Guest: No DHCPOFFERS received

I'm trying to set up a virtual machine (guest) wich should act as router (ubntu 14.04). The host is a CentOS 7 machine (4x LAN). The guest should get a public ip address over it's eth0 (guest), wich ...
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39 views

VM to VM communication without linux bridge

VM1 ----- VM2 Currently my VMs are acting as a SWTICH and they send L2 BPDUs and LACPDUs. I am using a Linux bridge for VM to VM communication on KVM. But linux bridge drops L2 BPDUs and LACPDUs ...
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0answers
17 views

Pass all traffic on an interface to the guest

I am trying to setup an NSM sensor using a VM. I have mirrored traffic from a Physical switch coming to eth1 of the host machine. I want the entire traffic to be available on the guest. Additionally, ...
0
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1answer
37 views

Sniffing packets coming out of “tap interface” when bridge connects to vlan tagged interface

So, I've a tap interface that's created by kvm which belongs to a VM being managed via libvirt. The bridge consists of eth0.123 (here eth0.123 is a vlan tagged interface) & the tap device. ...
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1answer
30 views

Can we provide an stack of IP's to the Open Vswitch to pick the IP?

I have started learning virtualization using KVM hypervisor and trying to set-up virtual cluster on the host machine.However from the tutorials on the internet states that the VM connected to OVS ...
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53 views

How Open-VSwitch bridge assigns IP addresses to guest when used on KVM hypervisor?

I have setup ovs switch on ubuntu and configured network xml and guest VM xml files respectively(Set-up for KVM hypervisor). Created new network for openVswitch by creating and defining new vlans.xml ...
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0answers
25 views

Why privacy ipv6 address cannot connect the internet in guest vm

I have a guest ubuntu 14.04 installed in kvm, host is a fedora 20. The eth1 nic of guest is in macvtap bridge mode. Ubuntu default enables ipv6 privacy extension, and prefers the temporary address: $ ...
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29 views

Can't Create Win 7 VM with RHEL 6.5 VMM

I have a server running RHEL 6.5 that I primarily run VMs on it. The VMs I run on it are all Linux, with the exception of one that runs Server 2008 R2. Yesterday, I attempted to install Windows 7 as ...
1
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1answer
35 views

How do I disable the metadata lookup at cirros boot?

I am booting cirros VMs outside of an Openstack environment using libvirt. At boot, the VM checks for metadata twenty times, which adds a lot of latency to the boot time. cirros-ds 'net' up at 6.14 ...
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0answers
85 views

KVM does not boot with .iso disk images. Device or resource busy?

I've been trying to set up a windows VM on my Ubuntu box by following the linked blog post http://www.pugetsystems.com/labs/articles/Multiheaded-NVIDIA-Gaming-using-Ubuntu-14-04-KVM-585/ So I have ...
4
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2answers
126 views

Server overloaded, acts like out of memory, but thats not true

I have a Centos 6.5 server, running QEMU-KVM virtualization: hardware: 40 CPUs 400 GB RAM software: Kernel: 2.6.32-431.17.1.el6.x86_64 Qemu: 0.12.1.2 Libvirt: 0.10.2 There are 3 guests, with ...
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1answer
47 views

Host CPU use optimization on KVM

I've done KVM based virtualization setup with following configuration. HOST Machine ---------------- OS: CentOS 6.6 (64-bit) CPU: Intel(R) Xeon(R) CPU E5606 @ 2.13GHz RAM: 32 GBs Disk: 2 TBs ...
0
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1answer
56 views

KVM Isolated network between host and guest fails after few hours

I have a KVM CentOS host with several CentOS guests. All of the guests are using a bridge for network communication. The guests have been up and operational for several months and work properly. The ...
2
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2answers
139 views

Unattended installation of Windows Server 2012 on KVM

I am trying to perform an unattended install of Windows Server 2012 into a KVM virtual machine, using virt-install. The installer is complaining, "Windows cannot read the <ProductKey> setting ...
1
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1answer
112 views

High packet loss with kvm, bridge and bonding

I have 2 servers connected through cisco linksys sg500. Both hosts have identical configuration (Ubuntu 14.04 LTS, 4 * 1Gb/s network interfaces with bonding). When I set up bridge and interface ...
0
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0answers
23 views

Networking issue (CentOS) - 2x Bridged networks

I've got an issue with a bridged network on CentOS machines. Basically, the setup at present: 2x Firewalls 2x internal networks (10.0.1.0/24 - Private, 10.0.10.0/24 - DMZ) 4x Virtual Hosts host1 ...
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0answers
31 views

global ip address packets don't pass from tap interface to the virtual machine

i have a config: p6p1(physical nic, connected to isp with no addr promisc) -> pppbr0 (bridge with no addr promisc) -> tap0 (with no addr promisc connected to a vm) iptables configured: iptables -A ...
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0answers
63 views

jboss unable to redirect to administrator console

I just installed jboss yesterday and everything seemed to be working fine (first time installing and using jboss). I turned on my computer today and started up the virtual machine (using kvm) that is ...
0
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1answer
96 views

Access libvirt+KVM virtual machines with DNS

I have an Ubuntu Trusty machine running KVM + Libvirt to manage small virtual machines, and using the standard NetworkManager to connect to regular networks. I want to be able to access the virtual ...
0
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0answers
74 views

Guest-VM can only ping CentOS KVM host, cannot access anything else

[root@KVMHOST]# ifconfig br0 Link encap:Ethernet HWaddr 00:1E:67:6B:17:2F inet addr:200.200.100.54 Bcast:220.225.255.255 Mask:255.255.0.0 inet6 addr: fe80::21e:67ff:fe6b:172f/64 ...
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0answers
47 views

KVM: VNC connection blocked

I'm running a KVM host with three client vms. Two ubuntu servers and one windows server r2 2008. All three VMs have the VNC option enabled in their XML config file: <graphics type='vnc' ...
0
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1answer
149 views

Change KVM boot order with multiple virtio disks in guest

I just started playing with KVM, so learning quite a bit here. I have a guest running, finally got the OS setup the way I want with Virtio SCSI and Net drivers (Win2k3) and am very happy with ...
0
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1answer
48 views

OpenVpn & KVM: can't access LAN behind server

i just set up an OpenVPN Server on a rented root Server. I can ping the OpenVPN Server IP, but can't connect or ping to other Machines (VMs) on the OpenVPN Server Network. According to the official ...
0
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0answers
38 views

simulate slow hdd in kvm

Can i simulate a slow hdd in a KVM guest? I need to test what happens with an app when it runs o a slow server (actually a server with the filesystem mounted over nfs). Related to this, I've found ...
1
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1answer
46 views

Can't access KVM Host (network brige)

I have a strange problem since I rebooted my KVM Host running CentOS 7. I have a network bridge which was going fine, I could access my KVM hosts and guests, but since reboot, I can't access the ...
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0answers
57 views

Solaris 10 inside KVM (Ubuntu 14.04) - network card not working

I have a problem with getting network running on a Solaris 10 guest running on a Ubuntu 14.04 kvm host. Installation of the guest runs fine but I can get no network connectivity from the guest to the ...
1
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2answers
39 views

How can I tell Linux to ignore disk partitions it's already discovered?

I'm running libvirt with QEMU/KVM and I have disk images for the VMs in LVM logical volumes. Naturally, many of the guest VMs use LVM for their disks, too. I ran partprobe on my hypervisor and it ...
0
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1answer
27 views

auto assign ip address to httpd.conf

I am building a cluster of servers in which new virtual machines will spin up as resources are needed. Is it possible in the apache config file to use a variable that will detect the servers ip ...
0
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1answer
54 views

Ovirt Manual Start Up

Interesting question: Was just interesting. In a worse case scenario you would not be able to start up a VM. Anyone else have a method to start a VM manually using CLI? Of the oVirt Manager GUI ...
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0answers
92 views

novnc apache2 reverse proxy code 1006

I just installed webvirtmgr but the noVNC console is not working (code 1006). The detailed error of the google chrome console is: [blocked] The page at ...
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0answers
62 views

Infiniband + KVM

this question is a copy from stackoverflow, as I was told, my question would fit here better. Despite quite a long search for days, I could not find any good information about the following - though ...
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1answer
368 views

How can I change Qemu KVM machine architecture from 440fx to q35 with virsh edit or virt-manager

Still trying to get GPU passthrough working and decided to change machine type from older 440fx to q35 ie pc-q35 but if I do virsh edit on the config it refuse to save saying "PCI Bridges not ...
0
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1answer
284 views

Debian Jessie Qemu KVM GPU Passthrough to Windows Virtual Machine guest Virt-Manager error Bus PCI not found

I'm having problems with Virt-Manager not wanting to boot a VM and giving error: Error starting domain: internal error: process exited while connecting to monitor: char device redirected to ...
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16 views

LXC breaks IP-connectivity

I have i Libvirt/KVM-host with two physical ethernet cards. I use two bridges for these cards, one bridge for a local DHCP-based network and one for static public adresses. I use the first bridge to ...