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.
1,144 questions
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How to connect to Xen XAPI/XCP-NG VNC/RFB connection urls?
How can I connect to Xapi-style urls such as https://192.168.1.45/console?uuid=e82eeea4-4d88-d31a-aabd-c4207ca6c24d with a normal vnc client?
Remmina seems to straight up crash with that as the host, ...
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Change MAC of VM on Xen
I have a Xenserver6 and multiple VMs on it - using Xen Orchestra I wanted to change the IP of a VM network device but accidentally shut it down before I could change the MAC. The way the server is set ...
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VM down : Failed to read /vm/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/domains: has this domain already been cleaned up?
I'm having a problem with my xcp-ng server, and I'm using the xcp center 20.04.01 on Linux xcp-ng 4.19.0+1. I didn't done anything like update before the issue occurred, everything was working fine ...
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Debian 12 upgrade, kernel/initramfs loads only 1 SAS card out of 2
I am upgrading a server with 2 SAS cards from Debian 11 -> Debian 12
I have come upon an interesting problem. At first it didn't load any SAS cards and I got to initramfs.
Increase disk detection ...
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XCP-ng Local Storage SR on LVM is unplugged and errors when being re-attached
I have an XCP-ng cluster running XCP-ng 8.2.1 and following a patch and reboot the local storage SR is showing as unplugged. This is an XCP create LVM on a RAID drive, the same RAID drives contain the ...
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Can't connect to MariaDB from internal VM Structure
S1
Virtual Machine 1: Ubuntu app server
Virtual Machine 2: MariaDB 1
S2
Virtual Machine 3: Ubuntu app server
Virtual Machine 4: MariaDB 2
from vm04 and 03 I can connect to DB1 with connection string ...
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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 ...
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Gtk-WARNING **: 20:45:08.481: Locale not supported by C library. Using the fallback 'C' locale
[root@server ~]# virt-manager
Gtk-WARNING **: 20:45:08.481: Locale not supported by C library.
Using the fallback 'C' locale.
(virt-manager:10415): Gtk-WARNING **: 20:45:08.482: cannot open ...
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find most recent snapshot using xen command line
I am using Xen, and for each of our VM's we have set up a process to create a new snapshot of the VM every morning, with the last seven being kept.
I am now trying to write a script to test restoring ...
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Finding mystery Linux memory usage - not caches or slab (or ballooning?)
I have a Xen VM running Debian Linux with a weirdly large amount of RAM used. What might be the culprit? I believe I've ruled out the usual suspects of disk caching, kernel slab usage, and memory ...
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How "real" is the POSIX clock in a virtual machine?
Introduction:
Time is OS like Linux is typically derived from a clock chip (RTC), or maintained by software using either periodic interrupts or some hardware registers (e.g. CPU's TSC cycle counter) ...
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Install Ubuntu 20 PV guest on a Debian 10 Xen
Struggling to find a guide to do this. I've understood that xen-tools supports installing Ubuntu guests on Debian so that should be a fast and easy way but can't find any examples.
Anybody knows a ...
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Xen hypervisor: What does the acronym RMRR mean in "(XEN) [VT-D] It's risky to assign" ... "with shared RMRR at"? What are the risks?
I'm running Qubes-OS 4.1.0
While looking through the /var/log/xen/console/hypervisor.log I stumbled over the following messages:
...
(XEN) [VT-D] It's risky to assign 0000:00:14.0 with shared RMRR at ...
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There is a way to pass the option " pci=[’00:...,rdm_policy=relaxed’] " to libvirt?
I can run (successfully) a xen virtual machine use the classical method with xl
xl create -f myvm.xenxl.cfg
I know also how to convert from xl format to libvirt xml
virsh -c xen:///system domxml-from-...
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How to run xen hypervisor on a computer that only supports UEFI?
I have tried updating the bios, disabling hyperthreading, adding xen.efi to its proper location within Ubuntu, building xen from source, etc. Yet I cannot get past the following error
a Xen panic ...
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Xen xl console terminates upon reboot command
I am trying to troubleshoot the boot issue of Xen virtual guest and I need to access the grub menu.
I have attached a console to guest with xl console and in other terminal I have executed a command ...
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557
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Xen VM continuously restarts and kernel fails to start init
I am using a VM built using the Xen hypervisor and libvirt management layer. I couldn't connect to the VM after updating the Debian verison from 8 to 9 so I tried logging into the physical machine the ...
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Workstation virtualization on workstation host
Problem exposition
I am a system administrator in our company, and I am currently researching a possible solution for more stable workflow in a our company. Our company is a chain of hundreds general ...
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Is it safe to mount the same partition to multiple VMs?
I'm using ubuntu 20.04 with Xen Hypervisor. On my machine I have an SSD that hosts my VM images, and then four sata drives which I have data on. My current set up is to mount the data on my domain0 ...
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Xen Domain0 Has Network But DomainU does not
After re-installing my domain 0, a guest VM (domain U) is no longer able to connect to the network.
I am using Ubuntu 20.4 on my Domain 0 with Xen 4.11. I am able to successfully connect to internet ...
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Dead Citrix XenServer with LVM: How to get the VHDs off the system?
My company recently delegated the task of recovering a fairly old (~2015) Citrix Xenserver to me. The machine had a major electrical fault which caused a hard drive failure and a collapse of the RAID. ...
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Tool to maintain IBM x3650 - get info from faulty HW
I am have a server IBM x3650 M4 running XenServer and Windows guest. The server have a problem with harddrive, yellow exclamation mark blinking. I am able to turn off the server go to BIOS and get ...
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Why can't I boot xen hypervisor on Ubuntu 20.04.1? panic on cpu 0 timer doesn't work
As the subject says I simply cannot boot into the hypervisor. I'm able to install it just fine though, it says something about the CPU when I try to boot and quickly just reboots. I have ...
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xen VM boot logs - how to locate
Working with a VM that starts to boot and then promptly shuts down. Hoping to locate VM boot logs on Xen host but not sure where to look. Examining /var/log/* doesn't show anything obvious.
...
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How do I manage xen-hypervisor using virt-manager client?
I've installed xen-hypervisor 4.11 on my debian 10 desktop. But, when I add xen connection to my virt-manager it shows this error.
Unable to connect to libvirt xen:///.
Failed to connect socket to '/...
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690
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Resizing Ubuntu Server partitions in a Xen environment
I need to increase an Ubuntu partition, in a Xen environment.
Through XenCenter, I increased the disk, from 10GB to 100 GB.
Now I can see "xvda" size 100 GB.
For reasons I don't know, in ...
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Failed to connect socket to 'var/run/libvirt/virtxend-sock': file or directory not found
I want to boot a physical installation of windows 10,so I need to run xen HVM version. Do u have a tutorial that I can follow ?
I'm trying to create a new connection inside virt-manager,with xen,on ...
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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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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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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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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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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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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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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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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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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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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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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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666
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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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1k
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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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3
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How to find out RAM speed and L2 L3 cache 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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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] <----...
