Questions tagged [xen]
Questions related to Xen Project, which creates a hypervisor or Virtual Machine Monitor (VMM). A hypervisor allows one machine to run multiple virtual guest operating systems simultaneously.
142
questions
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snowflake shows at the beginning of boot and reboot a ubuntu 2204 VM on Xen (Only UEFI/Secure boot)
The boot process below includes a step displaying a snowflake, which is not present in the BIOS boot process.
3
votes
5
answers
2k
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XEN cannot start domains after upgrading from 18.04 to 20.04
Dom0 wrong
xl list
Name ID Mem VCPUs State Time(s)
(null) 0 31898 8 r----- 27.7
starting of ...
1
vote
2
answers
9k
views
xen hypervisor wont boot from grub and "Can't find hypervisor information in sysfs!" error ubuntu 14.04
I have used This forum, trying to run xen on my os:
steps i have done :
egrep '(vmx|svm)' /proc/cpuinfo
ouput = 4 and also i have run KVM virtualization with no problem.
then:
sudo apt-get ...
6
votes
1
answer
1k
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Is the "linux-firmware" package actually required on a XEN VPS?
This package is half a gigabyte so I'd like to determine if it's truly needed.
I'm having trouble understanding why it would actually be required on a VPS, and no other packages depend on it, however, ...
0
votes
1
answer
149
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Repository to download Xen Hypervisor
I'm trying to install Xen hypervisor by command, but everytime I followed instruction on internet its returned with this error
E: Unable to locate package xen-hypervisor
I have tried to find ...
1
vote
1
answer
218
views
Xen/Ubuntu: Host to Guest Bridge Traffic Problem
Problem.
New Ubuntu/Xen host/guest combos seem to work perfectly except for a lack of host to guest ethernet traffic flow.
Specifically.
I create xen hosts and guests using the default/routine ...
0
votes
0
answers
543
views
Ubuntu 22.04 LTS Server Xen server doesn't boot after upgrades
Yesterday I did some regular patches on my Xen hypervisor running Ubuntu 22.04 Server. After the apt update / apt upgrade the server didn't boot into Xen anymore. It's stuck trying to mount my root ...
0
votes
0
answers
827
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Xen Hypervisor boots to a black screen after installation
I wanted to try virtualization so I went with Xen and followed this guide:
https://help.ubuntu.com/community/Xen
I got to the second command which says
Now reboot:
$ sudo reboot
During rebot, grub ...
0
votes
1
answer
1k
views
Ubuntu 20.04 with xen 4.11 domU panic with pci passthrough
I started to upgrade my server from Ubuntu 18.04 to 20.04. After reinstalling xen / qemu in the dom0 XEN cannot start domains after upgrading from 18.04 to 20.04 dom0 and all domU instances worked as ...
0
votes
0
answers
735
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How to create and start Xen guest VM by qemu-system-x86_64 command
I have built & installed Xen 4.15 onto my Ubuntu20.04 platform successfully according to https://wiki.xenproject.org/wiki/Compiling_Xen_From_Source
After reboot, I entered Domain 0 successfully. ...
-1
votes
1
answer
203
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Ubuntu Server 20.04 Crashes when using premade MBR partitons
I'm attempting to install Ubuntu on 150GB MBR disk with 3 partitions
/boot 1GiB
swap 8GiB
/ 140.9GiB
The moment the installer starts the format it crashes. Does anyone know what might be the ...
0
votes
2
answers
2k
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Copying modules to another system
I configured and made a custom kernel from vanilla kernel downloaded from kernel.org. Now I ported it to another machine with simple 'vmlinuz' and 'initrd.img' copying and some grub config done. (...
1
vote
0
answers
467
views
Cannot boot Xen: secureboot forbids loading multiboot2 module
I've installed xen-hypervisor-4.11-amd64, now I wish to boot Xen.
I can't. When I choose corresponding entry from grub I receive following message:
Loading Xen 4.11-amd64
error: Secure boot ...
3
votes
2
answers
1k
views
How can I create the smallest possible mirror of the archive?
I need to create an http url at my laptop to have a Ubuntu installation in my laptop on a Xen environment. This is what the final thing will look like.
The host and client are both going to be my ...
0
votes
1
answer
301
views
How to stop loading Xen 4.9-amd64 on boot
I installed xen on ubuntu following this question. Now, when I boot ubuntu 18.04, it takes ages and it says in the beginning:
Loading Xen 4.9-amd64 ...
WARNING: no console will be available to OS
...
3
votes
2
answers
3k
views
Grub warning- xen
When I run update-grub I get the following warning on my Ubuntu KVM hypervisor:
Including Xen overrides from /etc/default/grub.d/xen.cfg
WARNING: GRUB_DEFAULT changed to boot into Xen by default!
...
1
vote
1
answer
103
views
After upgrading a VM to 12.04 my eth0 MAC is all zeroes
I did a series of upgrades from 10.04 to 12.04 on a VM under Xen virtualisation. Now for some reason eth0 won't start up, ifconfig says mac address is 00:00:00:00:00:00, I've tried setting the address ...
1
vote
3
answers
1k
views
Unable to add disk devices for domU after kernel update 5.4.0-67
Running Ubuntu 20.04.2 LTS with xen 4.11
After the last kernel update 5.4.0-67 and a server restart none of the guests were started. Trying to start a domU manually I got the following error message:
...
1
vote
0
answers
123
views
Recompiling PV kernel: unable to get domain type for domid=4
After a few attempts I have managed to get Xen up and running on my device, with an Ubuntu focal dom-0.
I set up a PV guest ubuntu-focal instance, and am able to use it as expected. I'd like to ...
0
votes
1
answer
721
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Web-based Xen hypervisor
I want to make users able to create and manage virtual machines from a web-based interface.
I have installed Xen hypervisor on my Ubuntu machine
I have installed Apache webserver and all the other ...
0
votes
1
answer
1k
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Xen vs dual-boot for games
friends!
I'm using Ubuntu for making games, browsing net and anything I could ever do and I really like it. However, there is a little problem. My favourite game series Resident Evil doesn't run well ...
10
votes
2
answers
22k
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Bridging: Losing WLAN network connection with 4addr on option - Why?
Question:
For use with my Xen VM, I need to create a virtual network interface (vif) that is bridged to wlan0.
If in /etc/network/interfaces I add
auto xenbr0
iface xenbr0 inet dhcp
And then ...
0
votes
1
answer
1k
views
Xen not in grub menu after do-release-upgrade to 20.04
I have a server on which I run a number of Xen VMs. I recently upgraded from 16.04 through to 20.04. Unfortunately, Xen is no longer showing up in grub as a boot option. I only see:
Ubuntu
Advanced ...
0
votes
1
answer
389
views
How to add space disk to VM Ubuntu 16.04 on Xen server
I have an Ubuntu 16.04 VM on Xenserver. I add a disk extension to it to increase its storage capacity. I added a disk on Xen, but the problem is that the Ubuntu VM does not detect the added disk ...
2
votes
0
answers
1k
views
Ubuntu 20.04 with ZFS root fails to boot after installing xen
I did some Google searches but failed to find anything for this problem.
After installing 20.04 using the ZFS root option I installed Xen. When it rebooted it failed in initramfs with the error "...
4
votes
1
answer
1k
views
Upgraded from Ubuntu 18.04 to 20.04. Xen now has problems with hvm VMs
Problem 1: pv VMs running Ubuntu Linux would run but not connect through bridging until I added
net.ipv4.ip_forward=1 to sysctl.conf (and rebooted). Unsure why I now need this but looking at issues ...
0
votes
0
answers
503
views
Why can't I book 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 ...
1
vote
1
answer
4k
views
socket to '/var/run/libvirt/virtxend-sock': File o directory not found
I'm running xen on ubuntu 20.04 and I'm trying to create a new xen connection with virt-manager,but it does not work,because the error : "failed to connect socket to '/var/run/libvirt/-virtxend-...
0
votes
0
answers
600
views
libxenlight state driver is not active
I'm trying to create a new xen connection with virt-manager. At the beginning it didn't work because this error : "failed to connect socket to '/var/run/libvirt/-virtxend-sock. file or directory ...
6
votes
1
answer
2k
views
boot XEN under UEFI-only BIOS
Is there a way to get XEN 4.4 booting from UEFI mode BIOS? My AMD64bit laptop does not support direct CSM/legacy boots.
A nasty workaround has been to boot from a specially made USB pendrive with ...
1
vote
0
answers
121
views
Furher help on Xen and USB passthrough
I know that this is a long-shot, but I have not been able to obtain any help from the Xen community so I wondered if anyone in Ask Ubuntu may be able to help?
I have manged to get Xen installed and ...
1
vote
1
answer
1k
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Install Ubuntu 18.04 LTS on Xen hypervisor with linux kernel 3.18
Is it possible to install Ubuntu 18.04 LTS on a xen hypervisor platform with a 3.18 kernel?
Does the xen hypervisor's kernel need to be the same or higher then the installed guest?
Thank you in ...
0
votes
0
answers
169
views
Installed Xen and now computer won't boot
I recently installed Xen on Ubuntu 19.10. When I rebooted my computer to use it Grub automatically booted as usual, but this time I got the error code on my main Samsung 1TB hard drive that the ...
0
votes
1
answer
259
views
how to check if Xen support hardware virtualization?
I am try to check if xen in ubuntu 18.04 support virtualization.
By following this comand:
$ xm info | grep caps
I am follow step 5 of this tutorial:
Check virtualization capabilities
The output ...
0
votes
1
answer
1k
views
Directory 'mc/etc' does not exist
I am try to configure gateway.
I am follow step 4 of this
https://trueconf.com/blog/knowledge-base/configure-xen-hypervisor-ubuntu-server-14-4-05.html
When I open to edit mc/etc/sysctl.conf file I ...
2
votes
1
answer
2k
views
Unable to change display resolution Ubuntu 18.04 on Xenserver VM
I'm using Dell T410 server with Free version of Xenserver 7.4, i installed Ubuntu 18.04 VM all went well but i'm unable to adjust the resolution
from ubuntu settings, showing just 800X600, see ...
7
votes
2
answers
33k
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How to install Xen-Tools on Ubuntu Server LTS 16.04 with Xenserver 7?
I tried several methods.
sudo apt-get install xen-tools is installing at least two packages but cannot configure / start them for unknown reason.
Source
Using the iso provided by Xencenter (...
0
votes
2
answers
105
views
Problem with creating a PV-ubuntu-guest with Xen on slackware
I don't know if I'm in the right place but:
i have Xen installed on slackware and i wanted to create an Ubuntu-Guest-Domain.
I created the xen-config-file(attached) manually and created a new guest ...
3
votes
1
answer
8k
views
How to fix error 'libxenlight failed to create a new domain'?
Using Virt-Manager 1.2.1 on 14.04. / Xen 4.4 from repos. Cannot create VM machine because this error crops up on virt-manager.
This is after editing /etc/xen/xend-config.sxp to allow virt-manager to ...
0
votes
0
answers
51
views
Sharing internet between Host and guest xen
I am using Ubuntu 14.04 as host machine,want to create bridge so that guest OS can access the WiFi Internet access. If a have understood correctly brctl utility is used to create bridge for Ethernet ...
0
votes
0
answers
2k
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New Ubuntu 18.04 xen 4.9 VM will not boot (LUKS setup) - fails back to initramfs
On a fresh Ubuntu install with Xen (learning Xen, proficient with Ubuntu), I try to create a domU PV VM with LUKS encryption, the whole setup procedure goes smoothly, including creating, unlocking the ...
0
votes
1
answer
8k
views
Installation of 18.04 Bionic fails on XenServer7
I tried to install Bionic server as a guest on XenServer 7.0. After booting the iso I get a black terminal saying:
vbd vbd-5696: 19 xenbus_dev_probe on device/vbd/5696
And that's it. Did anyone ...
0
votes
1
answer
321
views
Pass-through of Marvell 88SE9230 to Xen guest with AMD-V iommu
I have a Gigabyte GA-970A-DS3P board with a AMD FX(tm)-8350 cpu. I have IOMMU enabled in the BIOS.
For the non-XEN linux boot I pass iommu=pt amd_iommu_dump as a kernel argument and can verify that ...
1
vote
1
answer
2k
views
Help please with XEN PCI-device passthough
I have problem with PCI passthough in XEN.
kernel: 4.15.0-23-generic
CPU: Intel Core i7 - saw specifications on Intel website: it supports VT-d, VT-x and all other technologies!
Checking XEN is ...
0
votes
1
answer
104
views
Xen DomU with > 520GB memory
i am currently trying to assign 750GB Ram to a DOMU running on our Xen server. Even though the overview states that the DOMU has 750GB RAM, inside the Guest there are only around 520 GB available.
...
2
votes
1
answer
977
views
Xen boot fails on HP Z8
I followed the instructions in https://help.ubuntu.com/community/Xen.
Well, the first two steps. After the reboot, I am presented with:
Loading Xen 4.9-amd_64 ...
WARNING: no console will be ...
0
votes
1
answer
6k
views
Why is having an error initializing AMD-Vi?
I have a Ryzen 5 1600x CPU with a MSI X370 Gaming Pro Carbon motherboard, which 100% supports I/O virtualization. When I boot in Ubuntu without Xen I can see:
me:~$ dmesg | grep IOMMU
[ 1.074675] ...
5
votes
2
answers
21k
views
How do I set up a xen bridge?
I have been reading various pages on how to set up the network for xen. Unfortunately, none of them actually have a full example config. They clearly show what the xenbr0 section should look like, but ...
0
votes
1
answer
297
views
Qemu vs. Xen(Qemu): virsh can't find qemu
Im running following setup build from source:
libvirt
Xen(quemu was part of Xen build process)
virsh vol-create qcow2 Responds to me: No qemu installd, only raw possible.
Every solution pointet out ...
3
votes
2
answers
5k
views
Why do I get disk I/O errors booting the 3.2 kernel on a xen vps server? [closed]
I have a xen vps, which I just upgraded to the new LTS 12 Precise Pangolin.
However, I see this error on booting:
[ 12.848076] end_request: I/O error, dev xvda, sector 12841
[ 12.848093] ...