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Questions tagged [hypervisor]

This is one of many hardware virtualization techniques that allows multiple "guest" operating systems to run concurrently on a "host" computer. Also known as virtual machine manager (VMM).

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Is it possible to run Docker on a hypervisor type 1?

Is it possible to run Docker bare metal on a type 1 hypervisor such as VMware and Hyper-V? Docker uses that same kernel as the host. So if the hypervisor is based on linux, does that work? Is there ...
luckyluke's user avatar
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Linux Kernel and KVM

I am new to the concept of building your server and was reading about Hypervisors. I learnt that KVM is type 1 hypervisor and can be installed directly on the server without OS. But what confused me ...
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Installing CentOS and Windows Server on the Hypervisor [duplicate]

Hello Server Fault community, In our company, we are planning to install an ERP system, and the system provider has specified the following server requirements of the application: CPU: 1x CPU Intel ...
Zak Rovsky's user avatar
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Bindmount External Drive In Proxmox for Nextcloud

I have a Proxmox LXC container with Nextcloud. The default data directory in Nextcloud requires the owner to be www-data with the default uid and gid of 33. I am using the following Proxmox Mount ...
user21303's user avatar
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I want to remove ESXi hypervisor from a machine and make it completely bare metal? How can I do that?

I want to remove ESXi hypervisor from a machine and make it completely bare metal? How can I remove ESXi hypervisor?
marshall mathers's user avatar
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Add Azure D drive (temporary storage) to a migrated VM

Any VM created in Azure is given a D drive; a temporary storage drive attached to the hypervisor; which gives better performance than the data disks as it's closer to the VM's compute resources. This ...
JohnLBevan's user avatar
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KVM : What is the Maximum Number of Physical CPU and Physical Core KVM Can Support on a Single HOST

I am new here so this is my first day with a very confusing Quistion so please help me to understand it Properly. Expert Advise Required My Quastion is : I have a dell PowerEDGE Server With Intel ...
Tech Donkeey's user avatar
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Making SCSI tape drive controller accessible to VM OS using virt-manager

I'm trying to make a SCSI tape drive drive controller card (or strictly, the tape drives and robotic tape library hanging off it) visible to the OS running on the VM. I'm running RHEL 7.9 on both the ...
Mike Parker's user avatar
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2 answers
4k views

Is GPU-P (GPU-Paravirtualization) Safe?

i'm working on building a virtualization server and i want to partition the GPU like the LTT team did in this video and how craft did in this video. i want to this in the production environment for a ...
jwsl224's user avatar
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1 answer
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Is it (still) possible to overcommit cpu with Xen?

Common hypervisors (Proxmox, Vmware, KVM..) do not prevent the sum of allocated virtual resources (such as vCPU) to exceed the number of physical ones, even if some of them (OpenStack) do limit the ...
PierreJ's user avatar
1 vote
1 answer
414 views

Limit number of CPU cores in bare metal server

I was trying to benchmark application performance across bare metal and hypervisors. I have a 24-core server on which hyper-v is running. On the same machine, I have centos7 installed. I can set the ...
helloworld's user avatar
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Co-locate VM on a single/set of core(s)

I'm trying to understand certain impacts of virtualisation on performance by running benchmarks on VMs. I'm considering ESXi and Hyper-V as the hypervisors. I wanted to know if I can pin a VM to a ...
helloworld's user avatar
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Can we assign the multiple cores of different hypervisors in same cluster?

I have configured the Three hypervisors with the OnApp. As all the Hypervisors use the SAN storage, if any hypervisor gets down, VPS hosted on the one hypervisors boots on two hypervisors. Each ...
Vishal's user avatar
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1 vote
1 answer
363 views

How to use hosts with no storage disks and virtual machine instances with no local drive in Openstack

In Openstack, is it possible to create compute nodes with no hard drives and use PXE in order to boot the host's system and therefore launch instances with no local drive which is needed to boot the ...
Rafik's user avatar
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-2 votes
4 answers
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Why virtualization still used instead of containers? [closed]

In 2021 era of containers, cloud providers still use hypervisor to make it possible to use more of a system's available resources and provide greater IT mobility since the guest VMs are independent of ...
Taha Ergun's user avatar
1 vote
0 answers
175 views

Firecracker vs ACRN?

What is the main difference between the ACRN and the firecracker hypervisors ? As I understand, ACRN The ACRN Hypervisor is a Type 1 reference hypervisor stack, running directly on the bare-metal ...
Kirill K's user avatar
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How to deal with AD when deploy Hyper-V cluster?

I try to plan Hyper-V cluster deployment over several host servers (10 or maybe 12; hosts are rented) placed in two separate datacenters. This will be Hyper-V Server 2019 Core hosts. The problem is, I ...
Alexander's user avatar
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Is it secure to still using an old version of VMWare ESXi for production after support ends?

I'm on a small sized business in which they own a HP ProLiant DL380 G7 Server for production. We would like to use a free license version of ESXi which is the version 6.7 U3 because we can't run ...
Adrián's user avatar
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2 answers
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Rudder-Server can't receive pending nodes : There is no readable input file at '/var/rudder/cfengine-community/inputs/failsafe.cf'

I've installed Rudder-server on a debian buster container, the software works fine : every services rudder-* have active status without error and I can access the web interface. The debug rudder ...
Matias V's user avatar
-1 votes
2 answers
1k views

Best Practice: Add an Additional Disk to Expand Logical Volume or Expand Existing Disk

We host a client’s Oracle VMs on our Nutanix platform. To date, whenever their VMs require more space they have us add an additional vDisk which they then add to the VG in order to expand the required ...
Reginald Greyling's user avatar
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Can I setup KVM Hypervisor on Soft Raid?

I'm running several virtual private servers as well as quite a few dedicated machines. I'm wanting to cut costs by setting up a dedicated server to run enough virtual servers to meet my requirements. ...
Billy Engler's user avatar
1 vote
2 answers
2k views

KVM hypervisor - Windows 32bit VM, RAM up to 2GB usable

I've got a Debian 10 KVM hypervisor, no libvirt or other tool to administrate it, using QEMU scripts. I need a 32bit Windows VM for a legacy app, but on a supported OS (not XP), either Windows 8.1 or ...
Krackout's user avatar
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2 votes
1 answer
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Hyper-V Cluster 2019 suggestion for requirements [closed]

We are planning to purchase nodes for the Hyper-V Cluster which will run on Windows Server 2019. Which chipset you recommend for cluster 2019? What is your recommendation for PCIe Cards? Should all ...
MSAdmin's user avatar
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1 answer
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How do I interact with the virtual machine from Hyper-V host?

I'm running a hypervisor Hyper-V on server hardware. I exported two virtual machines from elsewhere and I want to start them here while disconnected from the LAN. I'm on a terminal session on the ...
D_Bester's user avatar
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5 votes
1 answer
733 views

How is live migration of a VM possible/made?

From this article: Virtualization: What is KVM? and other resources, I learned that it is possible to migrate a Live VM from one host to another? Live migration KVM supports live migration, which is ...
samshers's user avatar
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1 vote
0 answers
1k views

KVM/QEMU - best practice for creating snapshots of your guests regarding disk space on the hypervisor

I have several KVM/QEMU guests with each having one hard disk based on the qcow2 format. As I understand, I have two option for creating snapshots. First is to create a snapshot inside the qcow2 image:...
manifestor's user avatar
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1 vote
0 answers
120 views

Dedicated IPv4 address for a KVM guest

I have a dedicated bare metal server, which is a KVM host and which has it's own IPv4 address. I just ordered another seperate IPv4 address for a KVM guest and which should be used for the KVM guest ...
manifestor's user avatar
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1 vote
1 answer
2k views

Is pausing/suspending VM into memory for long periods (months) recommended?

I am running KVM with some Ubuntu VM's as guest machines. The guest machines contain an application that does not need to be run most of the time, but once every few months, there are unexpected, ...
user3667125's user avatar
1 vote
1 answer
449 views

Powershell: unable to create new Hyper-v VM remotely

To simplify our current setup. We have SRV01, SRV02, and SRV03. All Windows Server 2016 with Hyper-V installed and joined to our domain. SRV01 host a shared folder "\\SRV01\VM-ONLINE-STORAGE\Test&...
Aboodnet's user avatar
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Centos 8.2 KVM Windows Server 2019 Blue Screen

EDIT 11.07.2020 I prepared a custom vhd via virtualbox. It has the same bluescreen, but now I'm getting into cmd. mdsched worked fine -> So no memory issue... Informations: HP Proliant 380 G9 ...
Wulf's user avatar
  • 69
3 votes
1 answer
780 views

How would you (incrementally) backup KVM VMs based on LVM storage?

I'm running a set of KVM hypervisors on LVM storage (unfortunately I can't use QCOW2, because the virtualization platform I'm using is strictly LVM-based). The virtualization platform has a very poor ...
godzillante's user avatar
2 votes
1 answer
1k views

How many cores can each VM have with free ESXi?

I am a bit confused about VMware's licensing with vSphere Hypervisor (the free one). I have a server with 2 X5650 Intel processors which have 6 cores each and 12 threads. What would be the maximum ...
LTWood's user avatar
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1 vote
1 answer
311 views

KVM VM which MAC address to give hosting company (Fasthosts)

To allow traffic to be routed through there network for my KVM VM my hosting company want to know the MAC address. The way I have it set up is my VM used a different IP from the host. I have bridges ...
Ben Edwards's user avatar
0 votes
1 answer
2k views

Installing an Operating System onto Microsoft Hyper-V Server 2019

I have downloaded and installed Microsoft Hyper-V Server 2019 on a laptop, I am using Hyper-V Manager in another laptop and have created a virtual machine in the Hyper-V Server. Now, how to provide ...
Reshad Zazai's user avatar
2 votes
1 answer
219 views

KVM - Import CentOS 7 from XenServer

I imported a virtual machine (CentOS) from XenServer to KVM. This virtual machine originally had two disks (LVM). I added both disks to the imported machine in KVM. The disk containing the boot ...
Eduardo Lucio's user avatar
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1 answer
6k views

Nested Hyper-V not working error 41 - Hypervisor launch failed; Either VMX not present or not enabled in BIOS

I would like to run hyper-v on a hyper-v server which in theory is possible. But when I try to start a VM in the child hyper-v I get an error. I checked the Event log and there it is, code 41. ...
Laci K's user avatar
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0 votes
1 answer
294 views

Is PCIe passthrough on Citrix Xen Hypervisor persistent?

I am virtualising my firewall, NAS and other services to reduce hardware diversity. Specifically I want to run at least PfSense and OpenMediaVault over Citrix Hypervisor (v8 at the time of writing). ...
andybjackson's user avatar
0 votes
1 answer
462 views

Fresh ESXi 6.7u2 install not accessible on management IP

After building the server, I connected my laptop to Ethernet port marked as 1 and attempted to ping the IP. This failed. I tried the other 3 ports, same result. Server has 4 NICS so I connected ...
David Sain's user avatar
1 vote
0 answers
669 views

How to set 6 physical, 6 hyper threading total 12 cores to hyper-v virtual machine - A parameter cannot be found HwThreadCountPerCore

I have windows server 2012 R2 on physical dedicated server I have created a virtual machine via Hyper-V and installed Windows server 2019 in it My dedicated physical server has 12+12 total 24 ...
Furkan Gözükara's user avatar
0 votes
2 answers
1k views

Installing KVM on Oracle Solaris

As searched shown KVM is not bare-metal and can be installed on some Linux distros, I wonder is it possible to install KVM hypervisor on Solaris?
R1w's user avatar
  • 255
1 vote
1 answer
182 views

Cannot increase disk space of a esxi VM

I wanted to increase the disk space of a VM in my VMware server esxi. I deleted a snapshot that was in the VM, but I canceled this operation unintentionally. Now, I can't see the snapshot in ...
Prince Tagoe's user avatar
2 votes
1 answer
237 views

Simple Hypervisor for one OS from boot [closed]

I would like to run a hypervisor that will let me install a VM on it where the end result would be such as that when these workstations will be turned on the following will happen: Hypervisor boots ...
Enrique's user avatar
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-1 votes
1 answer
69 views

What parameters of guest OS can be controlled with hypervisor? [closed]

I know that some hypervisors allow you to control the amount of available RAM and disk size of guest OS. What another parameters of guest OS can be controlled with hypervisor? (I'm asking about type ...
john c. j.'s user avatar
0 votes
2 answers
318 views

Identical Processor - Live Migration Error

I have production problem thats why Im asking for fast help :/ Environment 2 new HyperV Host with Windows 2016 in Failover Cluster Both with CPU: Intel® Xeon® Silver 4116 Processor 2.10 Ghz Live ...
Curl User's user avatar
0 votes
1 answer
256 views

Windows 2012 Hypervisor shuts down VM but cannot start it again

The last few days, one of the virtual machines, a VM running Centos 7 is shut down late in the evening and then not restarted. When I try and start it manually I get the error 'CENTOS7' failed to ...
Dennis's user avatar
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-1 votes
1 answer
40 views

In Public IaaS cloud, if my VM is given any available pCPU core, how sure am I that I get all the cores I pay for?

I am a new comer to virtualization! At least from what I know, in virtualization if I have a VM, the scheduler will give it any core available for processing in the physical CPU (pCPU) and it is also ...
Derdus O Mosoti Kenga's user avatar
0 votes
1 answer
2k views

how to install license to Xen server 7.6

Is it possible to activate Xen server using the trial license(90days)? I have installed xen license server using Citrix License Server Virtual Appliance. And uploaded my trial license file to local ...
Nyambaa's user avatar
  • 101
-2 votes
1 answer
504 views

What is hypervisor? examples for type1 and type2 [closed]

What is hypervisor, and what are the differences between type1 and type2? Examples for type1 and type2 ? Most questions out there are about the difference between type1 and type2, and the definitions ...
Tony Tannous's user avatar
2 votes
2 answers
3k views

Hypervisor type of Hyper-V on Windows 10 vs Hyper-V on Windows Server

Hyper-V on Windows 10 differs from Hyper-V on Windows Server in features and memory management, as stated in Microsoft docs for Hyper-V: There are some features that work differently in Hyper-V on ...
ebu_sho's user avatar
  • 123
-2 votes
3 answers
3k views

Vmware ESXI 6.5: Is there a way to combine all 16 vcpus to form 4 vcpus which performs better [closed]

I am not talking of overprovisioning of VCPUs. It's actually reverse. A way to combine all available threads to virtualize into a limited number of vcpus to get advantage of ESXI limitations. I have ...
ramdaz's user avatar
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