Introduction Kernel-based Virtual Machine (KVM) is a virtualization infrastructure for the Linux kernel. KVM supports native virtualization on processors with hardware virtualization extensions. KVM originally supported x86 and x86-64 processors and has been ported to S/390,PowerPC,and IA-64. An ...
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24 views
How to run KVM on non-X environment with Windows 2008 as a guest
I has a debian wheezy OS. And it's a non-X environment, but we just wanna install a windowns 2008 on it.But we couldn't install a X environment on my debian.
Could any one tell me howto?
Thanks!
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1answer
18 views
KVM: pass-through SATA hot-swap drive?
I have a SATA hot-swap cage in my Linux box. Is it possible to pass-through the SATA disk which is injected in that cage to a KVM guest? I have multiple disks however the SATA port will be always the ...
1
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3answers
23 views
Running KVM vms on top of vmware vms
Is it possible to run a KVM (not qemu) VM on top of a Linux VM running in VMWARE ESX 5?
Are there specific settings for that?
No care about poor performance.
2
votes
1answer
38 views
OpenStack “quantum” network manager and existing bridge/VLAN devices
The Quantum network manager included with recent versions of OpenStack does not support the --bridge and --bridge-interface arguments to the nova-list network create command. Short of writing a new ...
3
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2answers
59 views
understanding relationship between Qemu and KVM
What is the difference between KVM and Qemu? As I understand, latter is able to provide "user mode emulation" which means that one can run a single executable built for some other architecture like ...
1
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1answer
64 views
KVM IO leads to high system load, WD Caviar Green (EACS)
I have Ubuntu 12.04 host running Linux 3.2.0-24-generic, libvirt 0.9.8-2ubuntu17, qemu-kvm 1.0+noroms-0ubuntu13. Host uses elevator=deadline, guests use elevator=noop. All KVM guests use virtio, no ...
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1answer
35 views
Simple KVM with NAT networking won't run
I'm trying to set up a test VM in KVM according to the steps described here:
https://wiki.iac.isu.edu/index.php/KVM_Virtualization#Example_vmbuilder_Commands
My host system is Ubuntu 10.04. This is ...
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1answer
78 views
how to know linux server reboot reason
I've a linux server previously it was on physical machine. Physical machine was getting stuck and i had to reboot it. I shifted it to xen vm. After shifting to Xen vm its now rebooting. Its doing the ...
0
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1answer
40 views
Upgrade to Squeeze on KVM VM causes clock problems
So I have this VM (I don't have access to the host system) running Debian Lenny, with the following kernel: 2.6.32-bpo.5-686 #1 SMP
This morning I upgraded the VM to Squeeze (finally), and as the ...
2
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2answers
65 views
Linux-on-Linux KVM: Which filesystem should i use for guest and host?
I'm in the process on playing around with kvm and setting up a linux on a linux-server, so i can
reboot the (guest)server
encrypt the rootFS of the guest without having to do initramfs-tricks to get ...
0
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1answer
43 views
Can't do XEN pci passthrough of onboard Intel HDA Sound Card (but works in KVM) [closed]
I'm trying to pass an onboard SBx00 Azalia (Itel HDA) through to a XEN windows guest, but it doesn't seem to be working.
The device appears in the device manager as High Definition Audio Controller, ...
3
votes
1answer
107 views
Installing Centos 6 using virt-install over SSH with no graphics - beginner
I have a Centos 6 box with virtualised CPUs that is ready for installing a virtual OSs. I am installing remotely over SSH and my Centos 6 box has no GUI (no GNOME etc) so it's purely command line. ...
2
votes
3answers
41 views
Recovering running KVM guest disk image
I am running several KVM guests on an Ubuntu 10.04 host. Due to carelessness, the qcow2 images of the running hosts have been deleted. They are still running and responding properly as well as ...
1
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0answers
25 views
libvirt timing out. parted blocked messages in kern.log
I'm using Ubuntu 10.04.4 LTS to host KVM virtual machines. I'm using eucalyptus to manage them and having a lot of issues with libvirt not being able to interface with the KVM components and timing ...
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0answers
67 views
CUPS server running inside a KVM in NAT mode. CUPS clients hang
The CUPS clients hang when they mistakingly try to connect to the internal NAT IP address of the CUPS server. The CUPS server seems to have told the clients about that IP address during a previous TCP ...
1
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1answer
73 views
KVM Guest auto start after install
I'm trying to install a rhel guest inside a rhel host using kvm and have the rhel guest auto start after the installation completes.
The kickstart file has the "reboot" command which should tell ...
3
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2answers
273 views
What is the difference between RHEV and oVirt?
When I read the wikipedia articles about RHEV and oVirt, I can't really figure out why Red Hat have both projects, as they seam to solve the same problem?
http://en.wikipedia.org/wiki/RHEV
...
0
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2answers
129 views
KVM Guest Shows High CPU Usage in Host but not in Guest
Host is Ubuntu 10.04 Server. 8 physical cores. Guest is Ubuntu 12.04; its allocated two CPU. I have other VMs, but the last few days I've run only this one guest.
Top inside the guest reports load ...
2
votes
1answer
50 views
capping VM IO with cgroups
I'm using cgroups to cap disk IO that a VM does by using libvirt's support for cgroups.
So, I'm getting the major/minor number of the device from a 'ls -lL' on the drive where the '.img' file for the ...
1
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1answer
98 views
Debian Squeeze Linux 9p virtfs guest mount failure
First some background information on the server:
Host OS: Debian Linux Squeeze + qemu-kvm version 1.0+dfsg-8~bpo60+1
Guest OS: Debian Linux Squeeze
I use qemu-kvm via libvirt. I have set up 9p ...
2
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2answers
67 views
Can I host a domain on a kvm guest with a private IP?
I have a server on which I want to host several domains.
Let's say these:
example1.com
example2.com
example3.com
I only have one public IP (currently). I have configured all A-records to point to ...
0
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2answers
119 views
KVM Guests not booting
I have installed KVM on Ubuntu Oneiric Server 64 AMD.
uname -a
Linux myhostname 3.0.0-12-server #20-Ubuntu SMP Fri Oct 7 16:36:30 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
I tried creating a guest ...
4
votes
1answer
82 views
Creating a private network for two VMs
I am trying to create two VMs which are both connected to the same private network. I'm using Linux with qemu-kvm 1.0.
My plan of attack has been this:
brctl addbr bridge
ifconfig bridge up
tunctl ...
1
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2answers
144 views
LVM-snapshot based KVM VMs
As far as I know, LVM snapshots basically don't take any "real" space on hard drives.
I'm using KVM virtualization on my hosts and let's say I create an LVM volume for my Linux VM, then install it ...
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0answers
231 views
Proxmox, Windows and virtual disk cache modes
I run Proxmox 2.0, and installed Windows 2003 R2 (32-bit) server on it. I've use VIRTIO disk and NIC virtual devices (and installed appropriate drivers into Windows), and everything's fine. Physical ...
4
votes
2answers
121 views
Monitor VM's resources (CPU, RAM etc)
I'm testing Openstack and i'd like to know how can i find out about resource utilization inside instances (Virtual Machines).
Openstack uses kvm, qemu and libvirt in my testing environment. Is there ...
0
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2answers
39 views
Update kvm guests
I'm planning on setting up a new server using kvm. On the host and almost all the vm's I want to use Debian or CentOS. But there came an interesting question to my mind. Since kvm can be scaled up a ...
0
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3answers
66 views
I would like to know the equivalent command to curl in Solaris
I would like to know equivalent command to curl in Solaris. As in Linux, the curl command is used to find the website activity.
Kindly let me know command to check website in Solaris.
2
votes
2answers
89 views
Hardening Virtual Machine
I have a CentOS based product I'm looking to distribute it as a virtual machine (VMWare, XEN and KVM) and I have been lately assessing the steps needed to protect the VM.
The VM's data shouldn't be ...
2
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3answers
69 views
How to run fsck on guest VMs from KVM
I have a KVM server and one of my guest machine is crashed and prompting form fsck check.
Now I dont have console access or dont have the root access of the guest VM.
Is there any way that I can ...
1
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1answer
228 views
Poor Write Performance in VM inside Proxmox PVE 2.0
I am running a PVE 2.0 on a decent Hardware (2 SATA HDDs as RAID1, 12GB RAM, i7 CPU) but the I/O Performance is very poor inside the VM (Ubuntu 11.10 Server). The very same VM was copied to another ...
0
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1answer
93 views
Routing table with two NIC adapters in libvirt/KVM
I created a virtual NAT network (192.168.100.0/24 network) in my libvirt and new guest with two interfaces - one in this network, one as bridged (10.34.1.0/24 network) to the local LAN. The reason for ...
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1answer
48 views
How to find out Hosting KVM Server IP address from Virtual Machine
I have got large number of virtual machines running on 3 KVM servers.I would like to identify the host's server IP address/hostname from a guest machine.
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71 views
Prioritizing a KVM virtual machine
I have a CentOS 6.2 server running a few KVM VMs, how can I prioritize one of them above the others?
I tried:
virsh dumpxml vm > vm.xml
and then adding to vm.xml
<cputune>
...
2
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0answers
340 views
virt-manager can't open the display
My virt-manager was working just fine and all of a sudden stopped working, throwing in error: RuntimeError: could not open display
root@rakcal ~]# echo $DISPLAY
localhost:10.0
[root@rakcal ~]# ...
1
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3answers
73 views
CLI-Based monitoring tool for KVM
I am developing a scheduler for running VMs on KVM. The scheduling has over-commitment of resources like memory and CPU. For this, I need a CLI-based monitoring tool that keeps me giving information ...
0
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1answer
91 views
Hylafax+Ubuntu unreliable under KVM
We have an Hylafax 5.2.5 CentOS 5 installation hosted inside a Xen
virtual machine. It works quite well, but now I'm in the process of
upgrading/migrating it to a KVM virtual machine running Ubuntu ...
3
votes
3answers
349 views
How to connect a cdrom device to a kvm/qemu domain (using command-line tools)?
I have set up a virtual machine running Windows XP on my Ubuntu laptop. Using the virt-manager GUI application, I can insert a CD in my drive and go to Details→IDE CDROM 1 and click on the Connect ...
0
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1answer
61 views
FVD format on qemu/KVM
How can I install this format in Centos KVM?. Is it included in latest qemu versions?
Reference in qemu wiki: http://wiki.qemu.org/Features/FVD
Thanks in advice
0
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3answers
355 views
How to assign multiple public IP-Adresses for 2 KVM-Guests
I am new to this whole topic and I try for days now to figure out how to assign multiple public ip-addresses to KVM-guests through a KVM host. I found tons of examples howto get such a setup with 1 ...
1
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2answers
140 views
Linux KVM on a Virtualbox
Can we install a KVM machine on a virtualbox machine??? Virtual Machine on a Virtual Machine
I get the following error when I issue:
$ virt-install –-name kvm_client1 –-ram 256 –-disk
...
0
votes
2answers
70 views
Slow performance by PHP directory operations on virtual machine (Ubuntu libvirt)
Some days ago I installed an Ubuntu server and two running virtual machines with libvirt.
Everything works fine except one performance problem.
Everytime when I call a PHP script with directory ...
1
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4answers
113 views
Build a server in KVM linux
I owned a linux server. Now there are several users want to build web services on it, but they require different enviroments. For convenience I give a KVM virtual machine root permission to each user.
...
0
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2answers
14 views
Recovering KVM domain configuration file
I undefined a domain that led to deletion of domain configuration file. However, the disk image that configuration was referring to still exists. I am wondering if it's possible to recover the deleted ...
0
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0answers
55 views
Free benchmark tool for evaluating the performance of server side Java [closed]
Do you know a free benchmark tool for evaluating the performance of server side Java for Linux?
In the literature SPECjbb2005 is often used for this purpose but there isn't a free version.
I need to ...
8
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2answers
121 views
Can i pause VM's while power-cycling iscsi storage array
Unfortunately I may have to power-cycle my storage array.
In the context of using KVM with libvirt managing the Virtual Machines where i need to power-cycle the storage array, is it possible or even ...
0
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3answers
110 views
Linux: Add Virtual Interface for KVM
On a CentOS server, ifconfig shows several vnetX interfaces (vent1, vent2, vent100), how can I add some more?
(I'd like to add a couple of virtual machines, so I need to add some more virtual ...
0
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0answers
96 views
Error while creating VM using virt-manager on Xen
After a great struggle I got my XEN installed now I am using virt-manager and trying to create a VM. Since my H/W doesnt support full Virtualization using the Para Virtualization installation over ...
0
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0answers
173 views
KVM Virtual Machine Hangs at Boot using VMBuilder
How long should it take to setup and boot a virtual machine using vmbuilder?
I'm trying to create an KVM Ubuntu 11.10 guest running on an Ubuntu 11.10 host, so I'm running:
sudo vmbuilder kvm ubuntu ...
0
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1answer
74 views
Ubuntu 10.04 Virtual Appliance for KVM
I have an Ubuntu 10.04.3 guest running on VMWare ESXi 5.0. I want to create a virtual appliance of this guest that can be deployed on a KVM host.
Can anyone please provide me some suitable pointers ...
