/r/virtualization

Photograph via snooOG

Virtualization is transforming computing, from the datacenter to the desktop. News, comparisons, bugs, assistance, migration, anything: we're here to talk about it. P2V the world!

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Virtualization refers to the act of creating a virtual (rather than actual) version of something, including but not limited to a virtual computer hardware platform, operating system (OS), storage device, or computer network resources.

Virtualization is transforming computing, from the datacenter to the desktop. News, comparisons, bugs, assistance, migration, anything: we're here to talk about it. P2V the world!

General Rules

  • Standard Reddit rules apply!

  • Please keep it related to Virtualization - do not bash competing products. Try to give anecdotal evidence when possible.

  • We're here for serious discussion. Memes, Reaction GIFs, Facebook links, referral links, and similar content are not allowed in posts or comments.

  • Please don't discuss pirated content - this includes MacOS on non-Apple branded hardware (eg Hackintosh) WILL be removed.

  • When asking a question or seeking help try and give a much information on what you are wanting to do or what issue you're having. Actually try please.

See subreddit rules page for more detailed info. Ignorance of rules is inexcusable.


Useful URLs

More to follow soon! Please let us know what you'd like to add!


Related Subreddits

/r/VMWare - The gold standard in virtualization, VMWare!

/r/HyperV - Microsoft's Hypervisor!

/r/Xen - Discussion about Xen!

/r/VirtualBox - VirtualBox, the Desktop virtualization program!

/r/Citrix - Citrix!

/r/VFIO

/r/platformengineering - building a better base


Nomenclature

VM - Virtual Machine

P2V - Physical to Virtual - taking a physical computer & making a VM out of it.

V2P - The opposite, usually done when you are having an issue with a VM or management decides to nix virtual machines for some insane reason

HA - High Availability

PaaS - Platform As A Service

/r/virtualization

24,160 Subscribers

3

Laptop specs for running VM’s

This may be a little off topic, so I’m sorry if it is. But I’m buying a HP Envy laptop with the specs Intel Core Ultra 7 - 32GB Memory - 2TB SSD - Glacier Silver. Will I run into any trouble with virtualization?

1 Comment
2024/11/30
15:43 UTC

4

Virtualization Option Missing in BIOS on Asus E510 Desktop with Proxmox

I have an old PC (Asus E510 desktop) with an i5-4460T running Proxmox. While trying to create VMs, Proxmox gave me the following error: "no support for hardware-accelerated kvm virtualization detected bios."

I immediately thought that virtualization might not be enabled in the BIOS. However, I couldn't find any option related to virtualization in the BIOS settings despite thoroughly checking all menus.

I'm confident that the CPU supports the technology because, as shown in the BIOS, I can see: "Intel VT-x Technology -> Supported."

I contacted Asus support, and they replied:
"Furthermore, from our checks, the virtualization feature is certified only for Windows 8.1 PRO and Windows 7 PRO." But I don't think this is relevant to the issue.

Does anyone have any advice on how to resolve this? Thanks in advance!

https://preview.redd.it/8osym4iglo3e1.jpg?width=4032&format=pjpg&auto=webp&s=a6364e9845979474d1d7776480fa618f88d8fd0c

https://preview.redd.it/6o8fn4iglo3e1.jpg?width=4032&format=pjpg&auto=webp&s=062ea04475d40677284eff6def4cc327c742226c

1 Comment
2024/11/28
17:55 UTC

1

No Internet access on VMs with w10 as a host

Hello, sorry if this is a duplicate, i have some issue with my vmware workstation pro (17.6.1).
I have several vms (on debian and federa) that can't access the internet (can't even remote ssh to them with the menu)

It started after i rebooted a fedora VM. This cut this vm access and when i tried later on the others it didn't worked.

I checked the networks, tried with bridge access, restarted my computer, checked the services, reinstalled workstation but to no avail.

i then remembered that i had virtualbox installed but my vm on virtualbox couldn't access the internet either.

And here i am, do you have any advices on how to fixe that ?

2 Comments
2024/11/27
15:20 UTC

2

Laptop or Desktop for virtualized nested home lab

Hello, as the title suggests I am looking to purchase a desktop or laptop primarily to mimic a home lab. I am looking at the following minimum specifications:

  • A multi-core x64 CPU with 1.3 GHz or faster core speed that supports Intel VT-x or AMD-V virtualization hardware extensions
  • 32 GB of RAM minimum
  • A hard disk drive (HDD) with about 200 GB of free space. SSD is preferred due to their higher read/write speed. My research indicates a dual drive SSD HDD would be best?
  • Ethernet network adapter
  • Linux or Windows x64 operating system (with GUI) installed on your physical machine
  • Budget up to $2,500.00

Again I will be using this computer mainly to emulate a virtualized datacener run various VM's with different OS' and on the side code, maybeee some light gaming. Should graphics GPU's be accounted for?

What are some computer models you would suggest? I am currently looking at a few:

Dell XPS

Alienware m16 R2 (No dual drive storage)

Alienware Aurora R16?

Thank you

5 Comments
2024/11/26
04:11 UTC

3

Recommendations Needed

Hello all,

Not sure if this is the correct forum so apologies in advance. I currently own a small accounting and payroll firm that employs 4 people. Right now I run a small network with four outdated desktops and one laptop that connect to a file server. The server contains all the payroll and accounting files. I'd like to offer my workmates a work from home alternative where they can do all their work remotely while we communicate via slack/email/phone. I was thinking of buying just one single piece of hardware, beefy enough to run 4 identical virtual desktop environments (to replace the ageing desktops) where they can remote in and do their work. The current environment is Windows Pro 11. My questions are:

  1. Does this seem like a good solution?

  2. What virtualization environment would you recommend for this? I was thinking XCP-ng.

  3. Which remote access software would you recommend?

I welcome any and all ideas.

3 Comments
2024/11/24
20:45 UTC

1

Ip forwarding iptables

I’m running a virtual machine which runs a http Server in qemu. The virtual machine has a virtual network interface virbr0 that has a nat connection with the host‘s Ethernet interface. The host can indeed access the http server. But every other device on the LAN cannot.

I’m using the command:

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

Does anybody know how I can access the server running on the virtual machine from a different device?

1 Comment
2024/11/23
22:24 UTC

1

Playing windows games on a vm on linux with a low end pc

can i run windows games (like fortnite, apex, lol etc.) using a virtual machine on linux with atleast 30 fps? my specs: cpu i5 650, gpu rx 560, 8gb ram. Also, which vm do u recommend?

1 Comment
2024/11/23
22:15 UTC

0

New here

Here’s the deal. Basically looking for a laptop for running a maximum of 3 virtual machines with one being a server. Please recommend me models. Trying to keep it under $500 if possible but I’m flexible..I know that I need atleast 32gb of ram and an i7 processor and no I am not looking to utilize a desktop just yet. I’m not there yet plus I don’t have the space.

1 Comment
2024/11/23
11:04 UTC

2

0-60 Virtualization Workshop: A Hands-On Lab; Join us on Dec 10th & 12th

Join for this interactive lab session: Platform9 will host the next 0-60 Virtualization Workshop: A Hands-On Lab on Dec 10th and 12th.

This hands-on lab is designed for VMware administrators who are considering an alternative hypervisor (KVM) and virtualization management solution. Engineers from Platform9, many of whom worked at VMware or have extensive experience using VMware will be running these labs using Platform9 Private Cloud Director (PCD). PCD is a production-ready, enterprise-grade virtualization solution that is designed to be easy to use and manage for VMware admins.

Our goal is to have 1 engineer for ~3 participants, to ensure we can provide a high level of interactivity and guidance during the sessions.

Platform9 will be providing the hardware for the lab. However, please ensure that your networks allow outbound SSH connectivity. - There is no cost to participate in the lab.

Introducing vJailbreak:

vJailbreak is a new free tool from Platform9 that discovers your current VMware environment and migrates your VMs, data, and network configurations to Private Cloud Director. See this tool in action on Day 2 where we showcase live migration of your running VMs (with change block tracking and minimum downtime) or offline VMs, with an easy-to-use user interface as well as a powerful underlying API.

Session prerequisites:

  • One or more VMware administrators who are looking to get hands-on experience of KVM as an alternative hypervisor and an enterprise-grade virtualization solution
  • Must be able to participate in both lab sessions - 2.5 hours each day over 2 days

Day 1 Schedule -Tuesday, December 10, 2024 at 9 AM PT (2.5 hours)

  • 30 mins:  Configure and setup Platform9 Private Cloud Director
    • Configure cluster templates (networking, storage, and defaults) - Blueprints
  • 30 mins:  Add servers to the management plane – install host agents
  • 15 mins: Authorize servers and assign roles (Hypervisor, storage role, & image library role)
  • 15 mins: Add images to image library
  • 15 mins: Create VM flavors
  • 30 mins:  Deploying your first VM on KVM
  • 15 mins:  Overflow

Day 2 Schedule - Thursday, December 12, 2024 at 9 AM PT (2.5 hours)

  • 30 mins:  VM live migration, HA, and workload rebalancing
  • 30 mins:  Configuring block storage, storage classes, and backup options
  • 30 mins:  Enabling self-service and multi-tenancy (VDC equivalent)
  • 30 mins:  Migrate VMs from VMware to Private Cloud Director
  • 30 mins:  Overflow
1 Comment
2024/11/21
13:49 UTC

1

Capturing video through a VM

I'm on a Mac. I've been asked to capture some old home movies. My capture software only works on Windows. My Mac is one of the newer ones that cannot run Windows through Boot Camp, so the only way I can run it is through a VM. I use VMWare for this purpose. How inadvisable is it to capture video / run capture software through a VM? I know capturing can take a lot of resources and I don't want to have frames dropped or anything like that.

5 Comments
2024/11/19
01:59 UTC

1

Hyper-v virtual lab idea?

Would it be possible to use the Linux iso and both windows iso's that come with Hyper-v to create a Virtual lab?

If it is any ideas how it would work?

1 Comment
2024/11/18
02:22 UTC

2

Qxl vs Virtio video for Windows guest on Linux host

So basically the title.
I just want to know which would be better according to your experience.
For me, Virtio doesn't provide the 1366x768 resolution (not sure why) but Qxl fits end to end nicely.

Thanks for your time :)

0 Comments
2024/11/17
11:36 UTC

2

Can dell inspiron 5430 with intel i7 processor run vt-x for virtualization

Hey , I just started my college for cybersecurity and I wanted to buy a dell Inspiron 5430 with i7 processer, 16gb ram and 1tb storage.

How can I check if this runs vt-x? (I have not bought it yet but planning to buy it).

1 Comment
2024/11/16
19:00 UTC

1

pcie 1x cards for a secondary gpu for passthrough?

I only built my rig last year, but didn't think I would need onboard gpu, so unfortunately I didn't buy onboard gpu on my intel cpu, gpu is a 4070. Now I want to setup a vm with a linux host and win11 guest. I wanted to get as close to native as possible for performance.

My understanding is single gpu passthrough is technically possible, but I gather it is a pain and can break easily. I'd still consider doing that if I get more info on feasibility.

I'd rather not sell my cpu and basically rebuy the same cpu to get onboard gpu so I'm looking at my options.

There doesn't seem much in the way of 1x gpu cards and was wondering if people had recommendations. I'm guessing onboard gpu ate that market and video card makers aren't bothering making them.

2 Comments
2024/11/16
18:08 UTC

0

Running an OVA without a VM

If this is the wrong place to ask kindly direct me to the right sub. I'm not overly familiar with VMs but I get the basics

Background : I just bought car maintenance guide that comes in OVA .

After finaly get it to work I end up running a Win 7 vm on my Win11 laptop. The app itself it a browser base database.

This is effing ridiculous.

Actually I lied , I'm running it on my linux box because I couldn't install it on my Win11 laptop , it's a very lowend machine mostly for web browsing with a 64gig emmc drive.

Once imported into vbox the ova takes up over 40gig. I'm thinking this includes the Win7 virtualization.

Still effing ridiculous again.

Does anyone know if and how it is possible for me to unpack the ova and run it straight into win11 like a normal prog ?

3 Comments
2024/11/14
17:38 UTC

1

Can't Get Transmission/Deluge to work on my TrueNAS Windows VM and I have no clue why.

I cant connect remotely to either and and Transmission crashes out every 10 mins or less and Deluge cant hold a download rate for longer than a second without deteriorating to zero. Ive read all the documentation and I'm doing everything right but still nothing. I have no ideas, Please help.

0 Comments
2024/11/12
04:39 UTC

0

Made a huge mistake with qemu.conf

i may have done something incredible dumb and i need some assistance if possible, i accidentally wiped the qemu.conf file and now i can no longer connect to my vms in virtual machine manager, is it possble for anyone to send me a replacement file, cus rebuilding it... i wouldnt even know where to start

1 Comment
2024/11/10
02:00 UTC

4

Seeking hardware recommendations for new virtual machine farm

Hi, Team. I'm planning a major purchase to setup a new virtual machine farm in my home office. It will run Windows and Linux VMs for light business workloads, nothing heavy.

My idea is to get a SilverStone GD09 desktop case and load it with a high-end ATX desktop board running Linux. I'll setup KVM for virtualization and Cockpit for remote control. I'm using this now on a cute DH370, and it works great, but my old i3-8100 lacks horsepower (and RAM, and storage, and PCIe), hence the upgrade.

What are your recommedations for hardware? I need at least 128 GB of RAM and dual NVMe support. I was thinking going with a Ryzen 5950X on the X570 chipset. The price point for this build is much lower than the AM5 counterpart and PCIe Gen4 is just fine with me. I'm not planning on running I/O intensive workloads. Also, Threadrippers are beyond my budget.

However I've usually gone Intel for virtualization rather than AMD. Is there a competitive option on the Intel side I should consider? I have been paying zero attention to the Intel camp for years so my knowledge there is weak.

Do I stick with the 5950X, shoot for the 9950X, or look at the 14900K or a Xeon instead?

EDIT: I've noticed that it's almost impossible to find new X570 boards not from resellers with steep markups. So it seems that the best idea might be to replace my current desktop with a 9800X3D and repurpose my desktop's ASUS X570-PRO for virtualization, dropping in a new 5950X processor. Throw in a low-profile Arc A310 GPU and call it a day.

4 Comments
2024/11/09
20:11 UTC

1

How can I install old OSes that does not support UEFI to an iMac (2018)?

I have a spare iMac 2018 and I want to emulate old Macintosh systems as System 7 or others like Windows 95 but I don’t want to install a base OS and currently I don’t have any macOS versions installed. Is it possible to use a type 1 hypervisor installed and used in the same device and directly boot into there virtualized operating systems?

I am not experienced much in virtualization or OS architecture and this is kind of a hobby project.

1 Comment
2024/11/09
15:54 UTC

2

How much RAM and core should I set for UTM virtualization Windows?

I have a 16/256 M2 air

2 Comments
2024/11/06
19:09 UTC

1

Multi-Attach disks in Oracle Cloud Infrastructure

I usually work with VMs via Virtualbox, as I work with similar devices, I have set up a base VM and created a multi-attach disk with the vdi file of this VM. I done stuff in newer VMs with this multi-attach vdi as the storage file. Im plannig to move to Oracle Cloud Infrastructure for my virtualization. As far as I know, you can export regular VMs to Oracle Cloud Infrastructure and the other way around but, is it possible to export the VMs I created with this multi-attach disk to Oracle Cloud Infrastructure? If possible, can you export back this VMs to VirtualBox after I finish working with them in the cloud? Thanks in advance.

0 Comments
2024/11/06
15:07 UTC

1

Help with python virtualization

hi im making a vm completly in python :skull: ik its a shit idea but y not

it was going pretty well but im stuck at making the screen cuz it wont read stuff from memory correctly

i did some debug like making it show patterns and adding commands to read the memory and tbh i dont really get what the problem is, i tried booting from multiple iso/img files but same thing

https://preview.redd.it/webttkvjcoyd1.png?width=798&format=png&auto=webp&s=ecfeca1dd7294478fd2e046e2ea1108a57402237

this is what happens when i try to boot from windows nt 3.1 i also tried msdos but it shows no output, here is the emulator code(ik just one file :skull:) but if yall can help me find the issue it would be really helpful thanks :)

https://pastebin.com/j2KVGx8j

1 Comment
2024/11/03
11:49 UTC

4

Can I use AMD Sempron processor for virtualization?

I am planning to assemble a new desktop. I am a Linux user. I don't have enough money at the moment for even an corei

My question is suppose if I buy say 8GB of RAM will a AMD Sempron processor be able to run 1 VM running Lubuntu and 1 running Windows 10.

Host:Arch Linux Guests: 1 Lubuntu, 1 Windows 10 Virtualbox

2 Comments
2024/11/02
04:11 UTC

2

Mid budget pc for VM

What could be a mid budget for pc that Will run like 2-3 vm at same time, basic vm with Windows with basic apps like chrome, vlc. Sometime the pc Will be use to stream with plex when not doing virtualization. Not a gamer.

I read that AMD processors are better. For what you want to do, would 8 cores be enough? Like the ryzen 7 5800x? Want a cpu with gpu so maybe 5700G or 5600GT? The mem Will be 32Go

3 Comments
2024/10/29
22:22 UTC

6

Which Virtualization is better?

Hi everyone,

I just had a quick question, which VM is better between VMware or VirtualBox? In terms of home lab. I know this may be a personal choice but I just wanted to know if one is better than the other. Thank you in advance.

19 Comments
2024/10/29
15:14 UTC

2

Join us on Nov 12th & 14th for the next 0-60 with OpenStack: A Hands-On Lab

Join for this interactive lab session: Platform9 will host the next 0-60 with OpenStack: A Hands-On Lab on Nov 12th and 14th.

This hands-on lab is designed for VMware administrators who are considering KVM / OpenStack as an alternative hypervisor, but are either new to OpenStack or are concerned about the complexity of operating OpenStack. Engineers from Platform9 and iShift - many of whom worked at VMware or have extensive experience using VMware - will be running these labs. Our goal is to have 1 engineer for ~3 participants, to ensure we can provide a high level of interactivity and guidance during the sessions.

Platform9 will provide the hardware for the lab. However, please ensure that your networks allow outbound SSH connectivity.

There is no cost to participate in the lab.

Session prerequisites:

  • One or more VMware administrators who are looking to get hands-on experience with KVM and OpenStack
  • Must be able to participate in both lab sessions—2.5 hours each day over 2 days.

Day 1 Schedule - Tuesday, 12 November, 2024 at 9 AM PT (2.5 hours)

  • 30 mins: Configuring physical server OS, networking
  • 30 mins: Deploying OpenStack control plane via Platform9, bringing servers under management
  • 30 mins: Configuring server roles and networking in OpenStack
  • 30 mins: Deploying your first VM on KVM
  • 30 mins: Migration considerations/demo (iShift)

Day 2 Schedule - Thursday, 14 November, 2024 at 9 AM PT (2.5 hours)

  • 30 mins: VM live migration, HA, and workload rebalancing
  • 30 mins: Configuring block storage, storage classes, and backup options
  • 30 mins: Enabling self-service and multi-tenancy (VDC equivalent)
  • 30 mins: Deploying Kubernetes
  • 30 mins: SDN advanced features and capabilities
1 Comment
2024/10/29
05:55 UTC

1

UTM shared network not routing to other VMs

I've been trying to figure out a solution to this problem for a couple hours now but I'm starting to lose hope. According to this video VMs in UTM should be able to ping each other if they use "Shared Network" in the VM settings. For me this doesn't work though.

Setup:

Host: Macbook Pro M2 macOs Sonoma 14.7

Virtualisation Software: UTM 4.1.5

VM1: Kali Linux 192.168.64.3

VM2: Ubuntu Server 192.168.64.10

I can ping 192.168.64.1 from either of the machines. I can also ping both machines from the host. When I run wireshark on the host on the bridge100 interface I can see the icmp messages like normal. But when I try to ping 192.168.64.3 from 192.168.64.10 or the other way around it doesn't work. In wireshark I see ARP requests asking who has that IP address but no ARP response. I ran wireshark on the VMs aswell and was able to verify that there is no ARP request coming in.

I did try turning off firewalls but that didn't help and it doesn't make much sense anyway because the ping from and to 192.168.64.1 works fine. So my conclusion is that UTM is somehow blocking the connection between those two VMs.

Did anyone have similar issues before? What else can I try?

PS: Watching more of that youtube video I also just realized that this guy has way more network settings than my UTM installation. I only have bridged and shared network. His has host only and emulated vlan aswell. I just uninstalled UTM and downloaded the payed version from the Mac Appstore and I still only have the two options. I'm really lost here.

0 Comments
2024/10/26
22:51 UTC

2

Is there a cloud virtual desktop with a free trial without charging upfront?

I searched but all I found is sites that want to charge you upfront or hold the credit. Is there one that can be used with an empty prepaid card? I need a ready-made virtual desktop where I can run a browser, windows or linux.

4 Comments
2024/10/25
20:52 UTC

1

Audio is gone on Host Machine (No VM is even created yet)

I am using Windows 10 as the host operating system and encountering an issue with both VMware and VirtualBox. My audio device is an IEM connected to a Conexant CX31993 USB-C DAC, which is plugged into a USB hub via a USB-C to USB adapter.

The problem arises immediately after I launch either of the virtualization software (No VM is created yet). The audio cuts out, and while replugging the USB DAC makes the sound briefly return, it disappears again almost instantly.

Has anyone experienced something similar or have any suggestions for a solution?

2 Comments
2024/10/21
03:00 UTC

1

How to delete the space that VM takes up on my C drive (VM is located on D drive)?

I use oracle VM virtual box manager and I run a win 7 vm with 3gb of base memory and 40gb of space.

All the VM files are located on the D drive, however when I launch the VM and use it for a while my c drive goes from 20gb of empty space to 15 or 10gb.

Previously I read that this happens when the VM doesn't have enough ram memory allocated to it then it starts saving files to the C drive to free up the ram for it to function. However, now I have updated my ram and this still happens.

The worst part is that I do not know where exactly is the 5-10gb stored or what happened. I suspect its the pagefile.sys, which I think grew after using the VM usage but even if it was the case, I read that the pagefile.sys should not be deleted and cannot be directly managed.

Did anybody else have problems with this or knows how I could delete whatever space the VM took up on the C drive after I am done using it?

5 Comments
2024/10/20
20:12 UTC

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