KVM is the Kernel Virtual Machine, a virtualization hypervisor built into the Linux kernel.
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2answers
59 views
CPU usage of KVM
I have a linux host with 4 KVM linux guests. All the guest are pretty much idle, having a load of <0.1 inside the guest.
Now, if I do a top on the host, each KVM process is using something about ...
2
votes
1answer
30 views
Install grub on LV container for VM
I'm having difficult time installing grub in LVM LV container for a VM. This is the partition table:
# parted /dev/mgtvg/linux2os print
Model: Linux device-mapper (linear) (dm)
Disk /dev/dm-7: 129GB ...
1
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0answers
68 views
Disable SSH Tunnel with KVM VNC Server
Here at work we've set up a KVM server that hosts a couple guest machines. The KVM itself is headless and we remote into whenever needed, but we would like to be able to VNC into the guests. I have ...
1
vote
1answer
87 views
kvm guest Network interface no Authenication
i have a kvm host based on ubuntu 10.04 host , and the guest is rhel 5.3 64-bit,
on the guest i tried to execute mii-tool eth0
SIOCGMIIREG on eth0 failed: Input/output error
SIOCGMIIREG on eth0 ...
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0answers
173 views
Ubuntu 10.04 kvm Virtual Machine guest network speed slow
i have the following situation, i have a kvm host ubuntu 10.04 LTS 64-bit network host speed is perfectly run , as i am testing network speed using iperf , the speed between any network device and the ...
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0answers
145 views
Booting with UEFI in KVM [closed]
I would like to install Windows on my hard drive (which is GPT formatted) but I would like to be also able to run it virtually using KVM.
To clarify, the same Windows installation should be able to ...
4
votes
3answers
522 views
Host CPU does not scale frequency when KVM guest needs it
I have asked this question on serverfault, but it could also have been posted here. I will synchronise the answers if one is found.
Observation:
I have an HP server with an AMD dual core CPU (Turion ...
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0answers
103 views
Is it possible to install KVM On A VMWare virtual machine? If so, what are the steps?
I want to understand how to use KVM in CenTOS. At the moment, all I have is a VMWare ESX 5.x server to use. Is there a way to get KVM working on a system that is running on VMWare? Essentially, a ...
3
votes
1answer
170 views
SELinux interfering with host/guest file sharing using KVM
I'm running Fedora 17 with KVM and the virtual machine runs okay. I tried to follow this to get access to a file on the host system but SELinux prevents the VM from accessing any files other than ...
3
votes
2answers
318 views
How can I restore default window size in KVM/QEMU
In KVM/QEMU machine window size by default matches guest OS resolution. But if I resize windows (accidently) how to restore default size?
4
votes
3answers
116 views
What is contained in these addresses?
I am working on MUlti-processor record-replay feature of a virtual machine.
I have a log of non-deterministic memory access done in the virtual machine by virtual CPUs.
A very high proportion of these ...
3
votes
2answers
85 views
How long could I work with stable release after it is no more supported?
I'm still working on Debian squeeze which will be supported for only about 1 more year (it is server with KVM).
How long is it possible to work on an old version of Debian (after Debian gets old) when ...
4
votes
3answers
330 views
Debian + KVM: Which version to use? Stable or “new”?
I have Debian 6.0.4 (Squeeze) x64. Nowadays I use KVM stable package from apt-get.
Could you recommend me using a compiled newest or newer version instead of using the old one KVM package from Debian ...
1
vote
0answers
366 views
How to backup KVM images? Is it possible to backup whole VM?
I need to backup all (9 VMs) my KVM VMs. I would like to backup them in the night for example once a week. For example VMware server and VMware server 2 used to have possibility to create live backups ...
1
vote
1answer
365 views
How to limit CPU performance for KVM VM?
imagine 1 Virtual machine with 2 shared cores on quad core CPU 2Ghz speed.
Is it possible to limit this Virtual Machine for 500Mhz of CPU power on both cores? Or to reserve 1Ghz on 1 core for this ...
0
votes
2answers
996 views
KVM - Which Web Based management to use?
I would like to became an Expert of managing KVM on debian squeeze.
I still use virt-manager. Yes, it is easy and quiet safe and quick for me.
I tried a lot of web based management UI and non of ...
3
votes
2answers
97 views
How to report back system installation progress
I'd like to do some reporting from the system setup progress for virtualised (libvirt/kvm) Ubuntu servers. I expected some kind of such system to already exist out there, but couldn't find anything. ...
3
votes
1answer
384 views
Clipboard doesn't work in KVM.
I have a RHEL 6 Desktop with a windows KVM. How could I get the clipboard working, just as there is a solution in VirtualBox to share the clipboard between host and guest?
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votes
1answer
119 views
Learning to Use Virtual Manager in opensuse 12.2
Ok just installed virt-manager, and then install opensuse 12.2, installed correctly, but when do zypper up had no network, then turn off the virtual machine and change the network card to a vlan in ...
3
votes
1answer
575 views
qemu - two clients (tap0 & tap1) via br0 can't ping eachother but server pings ok
I've got:
A host system running Ubuntu with KVM (functional)
Two clients, one Ubuntu and one Windows 7, nothing fancy.
I've also setup (see below) a bridge via br0 for the clients:
br0: ...
3
votes
3answers
393 views
How do I send a shutdown event to a QEMU guest (OpenBSD)?
I'm using virtualisation solely to install OpenBSD onto the bare hardware, and during the installation, the redirection to the serial port didn't get configured, so, I ended up with the system ...
2
votes
3answers
423 views
How to access a KVM virtual-machine?
I've created a KVM VM using virt-install. There is an image file in the directory /ssd/kvms.
How do I access the virtual machine and turn it on? Do I need to assign an IP address, and if so, how do I ...
2
votes
0answers
180 views
How to setup KVM partitions?
I'm trying to install SolusVM/KVM on a server with one 500 GB HD and one 256 SSD. I am a complete beginner at Linux. SolusVM has a script on the site to download and install automatically, but how do ...
2
votes
0answers
110 views
Setup Cloudmin on Centos installed in LVM
I installed CentOS 6 with default LVM partition pattern. according to this pattern Can I use Cloudmin and store KVM Disks in LVM as Logical Volume? I think Cloudmin requires creating new logical ...
1
vote
1answer
985 views
What is the difference between virbr# and vnet#?
I am running KVM on RHEL6, and I have created several virtual machines in it. Issuing ifconfig command to the host system command line shows a list of virbr0, virbr1... and vnet0, vnet2... Are they ...
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vote
2answers
656 views
Why doesn't eth0 get an ip address when set up in a bridge?
I'm trying to understand how dhcp for IPv4 is used with bridging.
eth0 is configured to be in br0. This is working just fine but only br0 gets a dhcp lease, while eth0 doesn't. Both are configured ...
1
vote
1answer
126 views
How to get the cloned guest connected to the Internet?
I made a clone of a VM(running a version of Centos 6) on KVM, but the clone wouldn't connect to the Internet. Issuing ifconfig shows no interfaces but the lo. Interestingly, the original system can ...
1
vote
1answer
95 views
can't start default network, is there a way to run dnsmasq for both local and kvm?
I can't start KVM since I use dnsmasq on my laptop as a DNS cache server,
So, I'm wondering if this can be merged to the server I'm running.
3
votes
2answers
306 views
Error when try to install KVM on CentOS
I am trying to install KVM from Installation doc.
When I run the command modprobe kvm-intel I get the error FATAL: Error inserting kvm_intel ...
4
votes
1answer
798 views
kvm doesn't load Windows 8
I'm launching kvm with the following parameter:
kvm -m 2g -smp ncores=2 -hda disk.img -cdrom win8.iso
My CPU has VT support and enabled,
EDIT
I seems to have limited emulate type:
pc ...
0
votes
3answers
4k views
Very slow KVM in Ubuntu 12.04
I use Ubuntu 12.04 64-bit and KVM, my CPU is Core i5 3.3 GHz and I have 8 GB of DDR3 RAM. I run Windows 7 in KVM and it's extremely slow. My co-worker use Debian on the same PC configuration and can ...
3
votes
0answers
97 views
Socksifying a qemu-kvm using tsocks
I'm trying to socksify a qemu-kvm using tsocks, but I have no success.
I don't know if qemu access directly the hardware, skipping the OS or something like that, but I wasn't able to do this feat.
...
4
votes
1answer
402 views
How to use a 64-bit CPU in KVM?
According to tests the Mac Mini 3,1 CPU is 64-bit (grep -q "^flags.*\blm\b" /proc/cpuinfo) and supports Intel virtualization extensions (grep -q "^flags.*\bvmx\b" /proc/cpuinfo). However, after ...
0
votes
1answer
296 views
How to compile kernel for KVM guest (without paravirtualization)?
So I have a KVM machine, where I run an Ubuntu 12.04 (server edition).
I want to compile a minimalistic kernel for the KVM guest, but I only found the howto for hosts, and guests with ...
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0answers
307 views
KVM network bridge and public static IP for both host and guests [closed]
I have a Debian Server with 4 public static addresses. There is a KVM guest (also Debian) installed and running. What I want is to give the guest an IP of the host, so that both machines have public ...
1
vote
1answer
898 views
Bridging ethernet interface
I have a server with 4 public IP's. I have it with this configuration and I want to bridge the interface eth0 for using it with KVM:
So, I have 3 IP's (A.B.C.144, A.B.C.145, A.B.C.146) and another ...
2
votes
3answers
508 views
Run if statement on remote machine
I'm trying to run a set of commands on a remote machine, that includes an if statement. I'm using this to shutdown a list of kvm instances. The first line should be fine, but could be prettier, rest ...
3
votes
2answers
685 views
How to know if a process is attached to a tap interface?
I sometimes come upon machine with tap interfaces (eg, when KVM is running). How can i know which process is attached to the tap interface ?
1
vote
1answer
277 views
Partitioning scheme for a virtual machine host
I am planning to use an Ubuntu Server 12.04 with KVM to create 2 virtual machines.
Reading some docs on the net, I have found that a good approach is to use LVM based VM, so my idea is to have:
1 ...
2
votes
1answer
522 views
What is a framebuffer device and is it required to obtain a higher resolution?
I am running a gentoo guest OS on qemu-kvm. I can only get resolution of 800x600 in it. I want to be able to get a higher screen resolution.
xrandr gives the following output :
xrandr: Failed too ...
0
votes
0answers
304 views
qemu-kvm savevm very slow
I have up to date gentoo system with kvm images located on 500 gb partition with 200 gb of free space and defragmented, running machine with Windows XP and 2gb ram, I have problem with making snapshot ...
1
vote
1answer
516 views
Photoshop CS5 in Fedora 15
I'm working on a project, which implies that I use photoshop design files. So far I haven't figured out the best way to deal with it in Fedora 15.
I installed GIMP, but layers don't look as they do ...
3
votes
1answer
2k views
QEMU-KVM and internal DHCP server
I have set up a few soon-to-be production VMs running on QEMU-KVM on Ubuntu 10.04 LTS.
As for networking, I chose the "NAT" option in Virt-Manager and each VM now gets an IP address 192.168.122.x ...
2
votes
2answers
584 views
Poor network performance from KVM virtual machine
I am running a 32-bit Linux virtual machine on KVM. The host machine is a 64-bit Linux machine connected to a LAN. Attempting to transfer files with scp from the KVM machine to a server on the LAN ...
0
votes
2answers
446 views
Qemu terminating on signal x from pid xxxx
I've been all over google and back and I cannot locate any information on this particular error.
qemu: terminating on signal 15 from pid 3111
I'm using Virtualizor to launch new KVM VPS on my ...
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vote
2answers
2k views
How to copy qemu raw images?
I want to backup kvm virtual machines and copy machine's images another path or usb disk? How to copy " qemu raw images"?
4
votes
6answers
3k views
Should LVM partitions be used in virtual machine images?
Should LVM be used for the partitions when creating VM images (e.g., KVM images)? It seems like it adds complexity if you want to, say, mount a qcow2 image in the host if the image has LVM partitions. ...
7
votes
4answers
5k views
How to find the IP address of a KVM Virtual Machine, that I can SSH into it?
I have follow this guide (Virtualization With KVM On Ubuntu 11.10) to setup my KVM (Virtual Machines Software) on my Ubuntu 11.10 Server. However, I didn't setup my VM's IP address when creating the ...
3
votes
1answer
321 views
What happens if you add a vlan-device to an interface that already is a vlan device?
When configuring an application that creates vlans by using vconfig add, I discovered that it was adding a vlan device to something that was already a vlan device. Effectively, what happened was:
# ...
2
votes
1answer
292 views
How to extend an ext3 partition over LVM inside a file (virtual machine)?
I need to extend the root partition of a virtual machine (VM) using LVM (Logical Volume Manager) . I can afford a few minutes of downtime so a VM shutdown/reboot is fine.
The virtual hard disk is in ...
