KVM is the Kernel Virtual Machine, a virtualization hypervisor built into the Linux kernel.

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kvm killed by oomkiller

kvm version: QEMU emulator version 1.1.2 (qemu-kvm-1.1.2+dfsg-6+deb7u3, Debian), Copyright (c) 2003-2008 Fabrice Bellard libvirtd version: libvirtd (libvirt) 0.9.12.3 debian version: 7.5 I'm running ...
2
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1answer
977 views

virt-install cpu0 unhandled rdmsr

I'm trying to install a guest VM using KVM on a partition. I use virt-install. I call the following command: virt-install -n centos --ram=1536 --vcpus=1 ...
0
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1answer
779 views

share host folder with Vritual machine guest problem (centos 6.5)

I have centos 6.5 installed kvm. Then I created a virtual machine and tried to share the host folder (e.g. /mnt) with virtual machine using 9p_virtio. (follow this guide: ...
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0answers
105 views

complete KVM / libvirt breakdown after OS upgrade (openSUSE)

I have upgraded two E-350 systems which have been running VMs (one of the systems only Linux VMs, the other one Windows VMs) to openSUSE 13.1 (i.e kernel 3.11.10, kvm-1.6.0, libvirt-1.1.2). After a ...
2
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0answers
39 views

libvirtd (KVM) doesn't reload the kernel when I reboot the machine

I'm using Direct kernel boot with libvirtd and KVM as backend. But, every time I recompiled the kernel, and reboot inside the VM, the changes doesn't reflect until I do a Force off and Power on ...
2
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2answers
2k views

virsh, how to list autostart domains?

In virsh how do I see which domains are marked as autostart? virsh list does not show which domains are marked as autostart.
2
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2answers
1k views

KVM and Swap space

suppose the following scenario: a host with 2 GiB runs a few guests using KVM. Each guest does usually not need much memory, they are given 256 MiB each and run services that mostly twiddle their ...
3
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1answer
206 views

Sharing partitions in qemu

Apart from networking and partition sharing I've made qemu work pretty much like I want it to. I've got a bit of a special setup, I need to pass through /dev/sda, /dev/sda1 and /dev/sda2. (Is it ...
0
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2answers
269 views

RHEV cannot start inside Oracle VirtualBox

While installing RHEV Hypervisor 3.3 on Oracle VirtualBox I am getting following message: Failed to open a session for the virtual machine RhevH1 VT-x is used by another hypervisor. ...
0
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2answers
582 views

Nested virtualization: run RHEVH inside KVM

I have laptop with 16GB RAM, trying to install Red Hat Enterprise Virtualization Hypervizor 3.3 on Virtual Machine Manager (KVM) based Guest, but it gives error "Virtualization Hardware not found" ? ...
4
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1answer
750 views

X and xdotool in LXC instead of KVM

So far I am using various xautomation/xdotool scripts in a KVM virtual machine (linux guest) in order to let them do their work and let me work uninterruptedly. I am using a VirtIO disk, but still the ...
2
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0answers
2k views

Cannot Start KVM VM Because Missing BIOS

Whenever I attempt to start a KVM VM on Ubuntu 14.04 with the "kvm" command, I get the following error: qemu: could not load PC BIOS 'bios-256k.bin' I have searched for this file and found it ...
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2answers
1k views

How to migrate an IDE VM to a virtio VM?

On my KMS host I installed a windows server 2012 guest a few months ago. The VM runs raw using IDE (HDD). I would like to improve the performance by using virtio. I performed these actions: ...
1
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1answer
111 views

Capture information of system-call

I have a QEMU-KVM hypervisor (ubuntu) with several VMs. What I want to do is capture all information of VMs system call to hypervisor (without any intervention to VM whatsoever) in real time within a ...
0
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1answer
2k views

CentOS 6.5 + KVM (Virtual Machine Manager) create shortcut - Laucher for Guest Machine

How can I create a Launcher on my desktop for guests machines inside of KVM on desktop of CentOS 6.5?
2
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3answers
2k views

DHCP server not responding to requests from KVM guest

I've setup a DHCP server on my Debian server (Proxmox) so that I can provision IPs to my KVM guests on the server automatically. For some reason the DHCP server (isc-dhcp-server) isn't responding to ...
0
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1answer
753 views

Solaris 10 installation on KVM constantly reboot

Successfully installed Solaris 10 sparc on KVM. However when I restarted the VM it doesn't go to login screen but just constantly reboots. I've read different documents link1 link2 link3 but none of ...
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0answers
274 views

iptables server behind NAT accessible from outside as well as inside the nat

I have 2 machines with a KVM running on each machine - so two kvms with the below networking Host 1: 192.168.10.100 (eth2) 10.10.100.1 (virbr1) KVM 1 (NAT with Host 1): 10.10.100.128 (eth0 ...
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1answer
135 views

Using KSM in OpenVZ

I am setting up an OpenVZ node and while everything looks good so far, I am confused as to whether or not KSM works in OpenVZ. The majority of this thread seems to note that KSM has been disabled due ...
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0answers
103 views

Error mounting shared folder for KVM Solaris guest

Followed this guide on how to set up a shared folder between a KVM Host(Ubuntu 12.04) and Guest (Solaris 10 Sparc). On the last part of the it requires you to mount the shared folder and typed in this ...
3
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1answer
583 views

CPU Placement in KVM

I have a configuration of KVM guests where the cpu placement is configured as follows: <vcpu placement='static'>1</vcpu> Now since I don't have a cpuset specified I was reading libvirt ...
0
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1answer
109 views

Secondary bridge only working at random in debian wheezy

We are currently migrating from vmware server to kvm. So far everything works smooth, with the exception of the secondary bridge. Our network layout is as follows: Firewall with 3 ports eth0 Public ...
2
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1answer
781 views

Qemu Backing Files Question

If I'm creating a new.qcow2 qcow2 image based on a backing file (called base.qcow2) and the backing file is located on an nfs share. What happens if someone tries to modify, replace, or delete the ...
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176 views

Migrate a qcow2 image between storage pools

I have 2 storage pools. host_images (directory storage pool) remote_images (nfs storage pool) How do I copy qcow images from remote_images to host_images using libvirt APIs? I've tried using the ...
1
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1answer
4k views

KVM can't access iso o raw images outside /var/lib/libvirt/images

I'm using Linux Mint Debian Edition (Up. 8) when tryng to start a virtual machine from libvirt (either from commandline or using virt-manager to local qemu-kvm) I get this error when I use an image ...
0
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1answer
902 views

KVM Guest installation

After ran below command virt-install --name=vm01 --disk path=/var/lib/libvirt/images/vm01.img,size=10 --ram=512 --os-type=linux --os-variant=rhel6 --network bridge:br0 --nographics ...
1
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1answer
199 views

virt-resize complains: “virt-resize: error: You cannot use --expand when there is no surplus space to expand into.”

I am resizing an installed KVM domain # resize the partitions virt-resize --expand /dev/vda2 --LV-expand /dev/vg_main/lv_root $VMFILE $VMFILE.tmp and virt-resize throws an error: virt-resize: ...
2
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0answers
289 views

What is the structure of Libvirt Qemu VM dump/save files?

I need to do some exploration of Qemu-KVM virtual machines physical memory (particularly I need to check the fact of the physical memory intersection). In order to do that I'm trying to save VM's ...
0
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1answer
2k views

KVM Domain not creating

While I am trying to create a new KVM Machine , I am getting the following error , Unable to complete install: 'Domain has not existed. You should be able to find more information in the logs' ...
4
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2answers
3k views

Wireless bridged networking in KVM. Why is it so complicated?

I've been using VirtualBox (and sometimes VMWare) for years and I've never had any problem with the virtual network adapters, no matter if the physical ones were wired or not. I also played some time ...
2
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2answers
532 views

KVM linux guest, 2nd HDD, LVM partition or whole disk

I've got a RAID 10 arrays on a couple of KVM host machines. The RAID 10 array is one big VG. I usually create a small LV for guest disk image storage then the rest of the VG I carve out as LVs to add ...
2
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1answer
208 views

How do I know that my virtual guest is using VT-x?

I know my cpu supports VT-x, but how can I check that the KVM guest machine uses it? My Desktop is CentOS running a Windows 7 guest. I'm asking because.. the virtual Windows 7 says I'm using a XEON ...
3
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1answer
1k views

Proxmox Master Node crashes

I've inadvertently discovered a Proxmox bug. I run a personal cluster of 4 nodes (a technology lab for giggles and gags). Each node has a Dell Perc 5i and 4 HDDs in RAID 10. The standard Proxmox ...
1
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1answer
1k views

CentOS 6 KVM host with CentOS 6 guests kvm-clock enabled major time drift

I have a CentOS 6 KVM host with CentOS 6 guests, all 64bit. The host syncs time from NTP and has remained bang on. All the guests have kvm-clock listed as current_clocksource but over the last 3 ...
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3answers
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Mageia - how do I setup a KVM for Windows gaming?

Okay so I setup a KVM using Virt-Manager, Iset it to 7443 out of 8GB RAM, Got it to emulate my CPU fully, everything worked fine, but I cant get my GPU to unbind from the host to the guest, So is ...
0
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2answers
1k views

Enable 9p filesystem type in Centos 6 virtual guest?

My question is linked to this one : http://stackoverflow.com/questions/17880460/mounting-shared-folder-in-kvm-vm-error-mount-unknown-filesystem-type-9p (but can't comment it) I have apparently the ...
4
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1answer
1k views

VGA passthrough - Code 43 with KVM and libvirt on all AMD hardware

I've set up a system with an R9-270 and an ATI Rage (PCI graphics card, doesn't use radeon driver) on an FX-8320 and an ASRock 970 Extreme3 R2.0 motherboard with the intention of running Debian Wheezy ...
1
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1answer
559 views

kvm usb modem passthrough

I'm trying to set up a USB modem passthrough in kvm virt-manager. The host is Fedora 20. The guest is Centos 6 $ ifconfig wlp0s29u1u6: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether ...
0
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1answer
222 views

Install a basic CentOS VM on Fedora 19 with libvirt

I would like to install a CentOS 6.5 virtual machine on my machine, only with command line tools and basic networking capabilities, i.e a way to have http and ssh connections between the host (Fedora ...
0
votes
1answer
190 views

How to start a virtual machine filled with qemu-nbd?

I migrated a Windows OS (entire disk) to a virtual machine on another host (Debian with qemu and kvm). I used Selfimage to export the disk. On the host, first of all, I created an empty virtual ...
5
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1answer
6k views

How do I get my mouse back from qemu/kvm?

I'm running qemu/kvm on Debian testing x64 with this command: kvm -m 1024 -hda win7.img -cdrom win7x86.iso -boot d -net user but when I click inside the virtual machine, qemu captures my mouse and ...
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0answers
204 views

ssh local tunnel to VM

So, can anyone explain why this doesn't work? Everything from remote host (192.168.1.3): ssh -L 9000:192.168.1.2:80 login@192.168.1.2 elinks http:127.0.0.1:9000 and I can see a web page. other ...
0
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1answer
606 views

Can (and how) KVM use NTFS storage?

Using SL6.4, I am trying to create a new KVM virtual machine using virt-manager. When defining storage at default pool, it boots up OK. However, when trying to use storage located on external NTFS ...
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3answers
1k views

How to use VNC for gaming?

I was just wondering if it's possible to set up a windows 7 VPS/VNC server to be used for gaming on my local network. I have a macbook pro as my main computer, it doesn't quite have the horsepower ...
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2answers
251 views

Why do I see more processes in KVM than in OpenVZ?

I've got a 512mb Centos 6 VPS running on KVM. Now another VPS from a org. I manage is running on OVZ. When I type top on the KVM one, I get a whole list of all sort off processes. But when I do this ...
2
votes
1answer
590 views

KVM to Ovirt VM migration

I installed ovirt on a machine that was already hosting KVM virtual machines. I am now trying to migrate those VMs over to RHEV format, but I am receiving SASL authentication errors using virt-v2v. I ...
0
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1answer
689 views

Configuring bridge network in kvm (debian wheezy 7.2)

I am desperately trying to run untangle 10 as a guest in kvm. My host system is debian 7.2 My problem is that I am unable to configure bridges/(virtual)NICS which are successfully identified by ...
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2answers
622 views

How does KVM set its own netfilter rules?

I've been poking around with KVM VM's on Centos 6.4 and after some hair pulling and copious amounts of trying to break my desk with my head due to not having an internet connection on my VM's, I found ...
4
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1answer
1k views

One host, two virtual machines that cannot ping each other. How to solve

We have Virtual Machines operating within the KVM environment. We setup one as a dev server running Apache etc., and the other as a Windows development environment. The two environments are setup ...
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126 views

libvirtd not suspending guests

My guests, one windows, one linux, are not being suspended. I'm not sure why. Here's the output of systemctl, which looks wrong, but I've done systemctl start libvirt-guests && systemctl ...