Questions tagged [xen]

Xen is a hypervisor based virtualization. It supports x86, AMD64, IA64, ARM and other CPU types, and Linux, Windows, Solaris and *BSD guest operating systems.

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XenServer (Citrix) Management Network Interruption

We have an OOB/management network we use to loginto storage, hosts etc. We're using VLANs to separate out storage, from hosts, to camera's etc. We would like to replace this switch with a new one ...
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Making /dev/dri/renderD128 available to a Xen DomU

I have a program that wants to use /dev/dri/renderD128 (to use OpenGL to render some images, via EGL and libgbm). I had that device on my Dom0, but I want to use it from one of the DomU. I was hoping ...
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Samsung NVMe disappears when server on average to high load

Hello to the community! Let me get into the details of the problem itself. We have a total of 6 SuperMicro Servers in a cluster. The problem occurs only in 3 them, which are the newest generation. ...
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How do I get a PCIe expansion card with 4 USB3 controllers working under Xen?

This is not a question about PCI passthrough under the Xen hypervisor. I have a PCIe expansion card with 4 separate USB3 controllers which works with several different Linux kernels, but not when ...
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openSuse 15.1 xenProject -> client VMs no network after update 15.0 -> 15.1

Problem Description I have two identical openSuse15.1 bare metal server running Xen Project Hypervisor. Lets call them server1-dom0 and server2-dom0 All package versions ( xen, libvirt, firewalld ) ...
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Xen/Qemu ignores any mouse/keyboard input

Target: Orange Pi RK3399 Arch: arm64 Xen 4.13 is launched and working Armbian as dom0 Same armbian rootfs copy is used as domU + compiled generic kernel When attaching via VNC, screen is shown ok,...
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Load Xen domU (guest) kernel over TFTP

I have a Xen dom0 instance that has its kernel and DTB loaded over TFTP (via a U-Boot script), and its root FS loaded over NFS. I would like any domU (guest) instances to behave the same, but I'm ...
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Disk space full on FreeBSD VM

I've ran into a space issue I have never experienced before and was wondering if anybody knows what I'm missing here. [2005][root@base ~ ] # du -h / | awk -F/ 'NF <= 2' 4.0K /.snap 3.0K /dev ...
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SolusVM Xen Backup Speed

I need an advice about the speed of VM backups done by SolusVM. We are running a few VMs in Australia with BinaryLane.com. They are running KVM (not SolusVM). The time to backup a 50GB full VM there ...
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339 views

How to get (Citrix/Xen) 'xe' tool on CentOS 7

I have an Xen 7.6 cluster and I need to update the patches. Where do I get the 'xe' application from (for CentOS 7)? I see references to the 'guest-tools' that get installed to manage new VMs but this ...
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GPU Passthrough on Xen Hypervisor

I have a Dell PowerEdge r710 running the Xen hypervisor and I want to get a decent graphics card for a virtual machine. I plan on doing GPU passthrough to dedicate the entire GPU to the virtual ...
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293 views

Compatible AMD GPU for the Dell PowerEdge r710 [closed]

I'm a complete noob when it comes to server virtualization and GPUs, so please bear with me. Are there any decent AMD GPUs that are easily compatible with the Dell PowerEdge r710? I'm looking for ...
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Cannot retrieve metaling for repository: lentos-virt-xen-epel/7/x86_64 / yum will not work now

First I would like to say I am working on my linux knowledge and I hope the body here gives you what you need. I loaded centos 7 server minimal install on a HP zbook did yum update. rebooted for good ...
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Booting an older kernel in Xen DomU when using pvgrub in Dom0

I'm having issues with the lastest kernel update in a Debian Jessie DomU, and want to boot it using a previous kernel. Dom0 is also running Debian Jessie, and is booting the DomU via PvGrub. I'm ...
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How to load additional modules when Xen hypervisor is loaded?

I'm currently running Debian 10 with Xen 4.12 installed. I compiled Xen from source on another machine with the below steps: ./configure --target=x86_64 --with-platform=efi --enable-systemd make ...
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How can I stop Freenas from assigning two disks from different SATA controllers the same device number?

I have Freenas running in a VM in XCP-NG. I've followed the guides and I've dedicated a SATA controller to it using PCI-passthrough. Freenas correctly discovers its boot disk, which is virtual, and ...
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Issues with vif-nat and Xen after upgrading from Debian 8 to 10

I'm getting this error when running xl create: # xl create ../vm-www.rootspirit.com.cfg Parsing config from ../vm-www.rootspirit.com.cfg libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: /...
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XenServer 8.0 running a NTP client in guest PVHVM VM

I would like to run a NTP client in a Xen Linux VM under XenServer (XCP-NG 8.0 to be precise). The Linux VM, Debian Stretch 9.9 (uname -a: Linux debian 4.9.0-9 amd64 #1 SMP Debian 4.9.168-1+deb9u4 (...
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'Failed to set vcpu0's extended info' error when restoring Xen vm

I am trying to move a Xen VM from one server to another by using the xl save and xl restore commands. I am very new to Xen and working on some servers where the last guy running this never did this, ...
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80 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). ...
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How to add addtional ISCSI IQN in Xen Server

Current Problem : I have Xen servers running with Nexenta ISCSI storages and their IQN names are not according to standards and now we have added HP 3PAR storage cluster with ISCSI and HP ISCSI doesn'...
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274 views

Cannot Connect to XenServer from XenCenter

Setup; - XenCenter (running on a Windows PC) - XenServer (installed via APT on Ubuntu 18.04 using the command, sudo apt-get install xen-hypervisor-4.9-amd64 I can SSH into the server fine. ...
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Moving xen guest to new xen host affecting ssh

I moved a Debian 8.3 xen guest to a new Debian 9.8 xen host. The previous xen host was also Debian 8.3. This guest has been configured to let other specific users to access it without asking for a ...
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160 views

xenserver-iso: Error downloading: open : no such file or directory

I'm trying to build a "vdi_vhd" image using packer on xenserver,but i have got the below error, could you please anyone help me on this,Thanks in advance. [root@localhost bin]# packer build /usr/...
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151 views

Storage Setup for iSCSI/NFS servers

We are preparing to replace our storage servers (iSCSI+NFS). The current servers are Debian Wheezy using mdadm+lvm2 for storage, and failover using drbd and heartbeat (never got heartbeat to work). ...
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Migrate From Xen LVM to Citrix Xen

I need to migrate some production vm's from Xen 4.2 to Citrix Xen 7.1. I have very little experience with Xen. The VM disks are LVM, see below info. One possible solution might be to do the following ...
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Installation of virt-manager while yum update and yum install rhvm does not work

I have downloaded RHEV-H 4.2 https://access.redhat.com/products/red-hat-virtualization#getstarted (RHVirtualization 4.2 Host and Manager iso). I uploaded the image and installed on an HP G9 server ...
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1answer
118 views

Xen automatic dom0 IP assignment on a SSPN (Single-Server Private Network)

I'm currently using XCP-ng 7.6.3, and wanting to add a little security and take advantage of traffic shaping, I decided to PCI pass-through the NICs. In order to be able to reach the dom0, I created a ...
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138 views

Edited guest xml with 'virsh edit' to add ttyS0 but ttyS0 is not added

I am facing the errors in /var/log/messages like: Feb 19 20:19:42 guest-dp init: serial (ttyS0) main process (608881) terminated with status 1 Feb 19 20:19:42 guest-dp init: serial (ttyS0) main ...
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546 views

Getting errors when try to start Debian XEN HVM VM with more than 4 vif's

I've been trying to set up a PfSense firewall on my Debian XEN server for some time now, this works fine until I try to add a fifth (with four it works) interface to the "hvm" VM, then the VM won't ...
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Performance issue with debian guests on xenserver with iscsi storage

I am facing a performance issue with my small virtualization environnment. I have two Dell PowerEdge 2950 and a Qnap TS-453-BU. The Dells are equipped with XenServer 6.5.0 and they are attached to an ...
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174 views

Storing Xenserver VM Snapshot UUID as a variable in a shell script to create .xva files from snapshots

I was looking at this question which was asking something sort of similar for help and is the closest thing I could find to helping, but it doesn't solve my issue: export XenServer snapshot as file ...
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331 views

LVM snapshot gets created in a dirty state and cannot be mounted in XEN

I have a server which runs Xen 4.9.2 with Linux Ubuntu 18.04.2 installed in Dom0. There is one virtual machine (DomU) with Linux Ubuntu 12.04.5 that uses LVM logical volume as its root filesystem. ...
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How to find out RAM speed and L2 L3 cahce sizes of AWS EC2 & lightsail instances

On my desktop $ sudo lshw -short -C memory H/W path Device Class Description ======================================================== /0/0 memory ...
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119 views

Partially working network bridging - Ping works but services can't connect

So, here's the setup - I have a network with a Xen host on it. The Xen host is configured to bridge between the physical network and hosted VMs. i.e. [Network] <-----> [Xen DomO / Bridge] <----...
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253 views

Fedora - Configuring as a Xen Host (EFI preferable)

I've got a new Fedora box that I'm setting up as a Xen host (Dom0), which is proving a little more difficult than expected. First stop - install Xen via DNF and reboot. Find that the Xen boot option ...
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501 views

VM transfer speed between XCP-ng (XEN) servers

I have two HP DL380 G8 servers with 4x 1TB on HP p420 RAID controllers in RAID 1+0 setup. Eth0s are connected to the router, and Eth3&Eth4s are bonded (LACP) and connected directly between ...
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141 views

How to fix SolusVM Xen-Hvm template error at creation?

The following log contains an error which happens while executing the template creation script on a SolusVM powered CentOS 6 server. CREATING MBR IMAGE... 1+0 records in 1+0 records out 512 bytes (...
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How to connect to dom0 console from a trusted domU?

Is there a way to connect from a trusted domU to dom0 via console? I'd imagine I need to install some Xen tooling to do this; but, which tools? And, is there some permissions/firewall I need to ...
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153 views

Xen pool upgrade from 6.5 to 7.6

We are running a XenServer pool on an IBM BladeCenter S with 4 HS22 blades installed. 3 of the blades are in a pool and the fourth not. The blades have no internal storage and all get it from the ...
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Xen virtual guest having dropped packets

I have noticed dropped packets on my Xen virtual guest. Checking with main server no dropped packets observed. What could be causing this? Im using 4.9.112-32.el7.x86_64 Added new info :
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192 views

SSH into Xen Virtual Machine connection refused

While practicing for SysAdmin certification, I spun up a virtual machine. I could not SSH into it from my laptop on my LAN. I could SSH into the VM from within the host OS. After some reading and ...
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357 views

Kill a process inside an lvm snapshot

In my XEN host, I have a snapshot that cannot be removed with lvremove $ lvremove /dev/vg0/snap-tmp-vm06.docker-disk -fdv DEGRADED MODE. Incomplete RAID LVs will be processed. Using logical volume(s) ...
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Adding a bridge kills the internet connection from all interfaces

I'm working on Debian stretch with the newest xen from repositories. Installing xen-system and xen-tools gave no errors, though when I try to start a guest (we'll call it dom1) it won't work unless ...
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Is live migration causing data corruption?

We have two virtual hosts (Xen 4.9) and live migrate guests between them. The storage of the guests is accessible via iSCSI. That is, a guest running on host A has its storage presented as a straight ...
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179 views

How to recover data of a Bluescreen XEN HVM Windows server (SolusVM)?

The server won't boot into any of the following modes and the VPS crashes in the loading screen with a Bluescreen error. SafeMode SafeMode with Networking Last Known Good Configuration Normally How ...
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1answer
567 views

Xenserver 7 does not see new raid array just added on Dell R710 server

I have a question regarding how Xenserver 7.0 sees and add local storage raid arrays from a Dell R710 server. Originally, the server came with a raid 5 setup of 4 hard drives, for a total of 800GB of ...
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252 views

The setting could not be created error message

Whenever I open Word or attempt to change the Autorecover files location I see an error that just says The setting could not be created. The only option is to press OK. The location is set to C:\...
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23 views

Retrieving libvirt-commands to hypervisors

Libvirt is cool, but I need to port a VM from it's configuration to bare QEMU or Xen. To reproduce the setup, I need the commands send to the specific Hypervisors in order reproduce the VM in the ...
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75 views

Xen VM Machine performances Slow while second machines turn on

Actually If i try to access Second VM Machines at same time means getting performance issue,Even not able to access the application in the VM . I'm very new to this , So could n't find exact issue , ...

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