Questions tagged [xen]
XEN is a hypervisor based virtualization technique.
193
questions
0
votes
1answer
23 views
Copy VM from Xen hypervisor
I have copied (using dd command) a whole disk of Debian7 VM running on Xen server.
I was able to convert the raw image to the kvm format (qemu-img). Than I've created new VM and attached disk image (...
0
votes
1answer
10 views
XenServer 6.5 Trying to launch VMs from Local SR
Let me being by saying I am new to Xen Server, I’m come for the telecom/networking world, but now I find myself managing servers. With that being said I am looking for assistance with setting up a ...
1
vote
1answer
19 views
clone complete XEN LVM server including all VMs
I ordered a faster Hetzner root server to move my XEN mashine there with all volume groups, lvm-volumes and VMs.
I already started to create the same xen VMs there, copy config files and userdata and ...
0
votes
0answers
12 views
extracting all system calls and information from xen regarding the vm
I have a XEN hypervisor (ubuntu) with several VMs. What I want to do is capture all information of VMs system call /hypercalls to hypervisor (without any intervention to VM whatsoever) in real time ...
0
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0answers
29 views
Xen on Ubuntu 18.04 with IPv4 (without NAT) and IPv6
similar to the Xen on Ubuntu 18.04 with IPv4 (with NAT) and IPv6 I try to set up the netplan configuration for XEN from ubuntu 18.04 with multiple public IP addresses.
So far my configuration looked ...
1
vote
1answer
23 views
Xen Server: Free memory != dmidecode -t17 output
Overview
I'm running a Xen server on Debian buster. Latest kernel, latest BIOS version, legacy boot.
Booting into Xen server only shows 8 GB of RAM free while recognizing 16 GB of RAM connected.
...
0
votes
0answers
50 views
Unable to complete install: 'unsupported configuration: emulator '/usr/lib/xen-4.11/bin/qemu-system-i386' not found'
Log:
Unable to complete install: 'unsupported configuration: emulator '/usr/lib/xen-4.11/bin/qemu-system-i386' not found'
Traceback (most recent call last):
File "/usr/share/virt-manager/...
0
votes
0answers
14 views
How can I successfully deduplicate XenServer virtual machine image dumps?
I am trying to use restic to backup XenServer virtual machine images, but when I backup the same unchanged virtual machine image the repository deduplication does not work: the repository gets twice ...
0
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0answers
12 views
Xen Hypervisor Going on dracut shell
I have xenserver running multiple VMs. Every time I run VMs, it goes to dracut shell with following error.
1
vote
2answers
62 views
resize a xen virtual disk
I have a VM running on my XEN host which goes low on diskspace. It has mounted its volume as /dev/xvda2 formatted with a ext4 filesystem.
This is my xen config for the VM:
# /etc/xen/vm04....
1
vote
0answers
20 views
How to debug laptop S3 suspend problems on Xen/Fedora?
I'm running Qubes, which is basically Xen with a Fedora 25 as dom0. The only thing that does not work properly is when I close the notebook lid or press suspend. When I open the notebook again nothing ...
0
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0answers
18 views
What is the difference between xen netbk/vif and tap?
When I'm using libvirt with QEMU/KVM backend, then it creates a tap type network interfaces for guests. However, I have one server running xen as an hypervisor and looks like it creates netbk/vif type ...
3
votes
1answer
47 views
Create Xen guest with preinstalled packages and settings
For context, I'm creating a script to simplify the process of creating xen guests. The script uses xen-create-image and uses a bunch of flags to set as many useful settings as possible (distro, vg, ...
1
vote
0answers
50 views
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 ...
1
vote
1answer
33 views
Unable to reach network from host systems (guest systems are working)
After updating my server to the latest version of Xen (4.11.1 on Debian) I don't have a working internet connection on my host system (the guest systems have access). I'm not really sure if the ...
0
votes
1answer
137 views
Exported ova failed to import in xcp-ng center
I have exported a centos7 ova file and I am trying to import it into XCP-ng 8.0 using XCP-ng center 8.0.1. But This error shows.
1
vote
0answers
41 views
Error “Attempt to create a HVM guest on a non-VT/AMDV platform” when Intel VT-d is enabled in BIOS
I'm installing XEN on an older Vernonia server with a Cloverdale VT-d compatible CPU, either an S5000XVNSATAR or S5000XVNSASR, a 2006 design with some documentation still available. This problem is ...
1
vote
1answer
28 views
How does the BIOS work in a Xen virtualized environment?
On a physical machine, the BIOS is located on a chip that sits on the motherboard. How does with work in a Xen virtual environment? Any links to documentation/articles will be appreciated.
0
votes
1answer
39 views
What is better to install to virtualization on ubuntu? [closed]
i have home server and i want virtualize all my hosts (web,radio, tracker, file server etc) to use more then one OS.
So for host OS i want install Ubuntu-server on HDD 500gbx2 Raid 1.
i want to ...
0
votes
0answers
77 views
yocto Xen-Guest-Image-Minimal filesystem setup question
I have used poky/yocto project to create a xen-guest-image-minimal for Xen 4.9.0 (Ubuntu Server 18.04) running on a Xeon i586 processor.
I am now preparing to create config file for the guest... and ...
0
votes
0answers
52 views
tcpdumping virtual network on the Oracle Virtual Server
Is there a way to enable proper promiscuous mode in Oracle Virtual Server based virtual network?
It seems like card is getting only some percents of total network traffic.
I have tried all of the ...
0
votes
0answers
79 views
XEN guest crashes when downloading with wget
There is a SLES 11.4 XEN HV.
There is a SLES 12.2 guest on it.
The guest is stable, only when we download something from the internet, the guest is getting crashed!
I think there is enough free ...
0
votes
2answers
658 views
Hetzner reported not allowed MAC addresses in subnet
We had email from Hetzner network team asking us not to use MAC addresses belonging to the Virtual Machines belonging to the subnet.
We configured Xen server host as a router using this guide.
After ...
1
vote
1answer
419 views
Qubes-OS transfer files from and to HVM
I can't find in the documentation how to transfer data from and to the HVM in Qubes-OS. When a normal AppVM is created, it has the Qubes Tools installed so easy copy and paste, and transferring files ...
-2
votes
1answer
69 views
Can Xen (using it with SLES 11.4) run SLES 12.3 as guest?
Would there be any issue using Xen (hypervisors OS level: 11.4) with a guest that would have SLES 12.3?
Are there any table that describes which Xen OS version is compatible with which SLES version? ...
0
votes
0answers
370 views
Xrandr increase resolution black screen
When I try to increase the resolution in my virtual machine (Xen), running a debian distribution (Kali/Parrot in this case), I get a black screen. I use xrandr, because in the GUI, the max resolution ...
1
vote
1answer
682 views
Can you assign different DNS servers to different network interfaces?
I am trying to have my eth1 use 10.50.1.11 and 10.50.1.12 dns servers whilst my eth0 interface uses 8.8.8.8 and 8.8.4.4 dns servers.
I am running centos 7 vms within xenserver 6.5. eth1 is a closed-...
1
vote
0answers
282 views
CentOS 7: Unable to complete install: internal error: libxenlight failed to create new domain
I have a problem with the installation XEN on CentOS. I did everything through virt-manager, I did not try through the commands, but there should be the same error as I understand it. Worth the ...
0
votes
1answer
460 views
Xen on Ubuntu 18.04 with IPv4 (NAT) and IPv6
I'm renting a dedicated server at Hetzner and installed Ubuntu server 18.04 LTS on it.
I've got two public IPv4 addresses named x.x.x.x and y.y.y.y and one IPv6 /64 block for connecting my private ...
0
votes
2answers
135 views
What's wrong with my Xen bridge configuration
I'm on Debian 9 (stretch):
$ cat /proc/version
Linux version 4.9.0-3-amd64 (debian-kernel@lists.debian.org) (gcc version 6.3.0 20170516 (Debian 6.3.0-18) ) #1 SMP Debian 4.9.30-2+deb9u5 (2017-09-19)
...
1
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0answers
121 views
How to enable networking for xen guest
I have a really weird one.
The setup is an ubuntu 16.04 host, with xen installed. I'm using virt-manager on my mac to manage the machines. I've added a bridged network then I attempted to add a ...
2
votes
1answer
441 views
How To Find BASH Shell Array Length (number of elements)
I have the following matrix:
LCANTIDAD_VM_=4
while [ $i -lt $LCANTIDAD_VM_ ];
do
VM_NAME_=$(xe vm-list is-control-domain=false | head -n -$aux2 | tail -1 | cut -d ":" -f 2)
VM_NAME_=$(trim $...
1
vote
1answer
80 views
After upgrade, Debian can access internet, but not local network [closed]
I recently upgraded from Jessie to Stretch, and now, while I get an ip address from my router (which is also showing up properly as my default gateway, at least according to "ip r"), and I can access ...
0
votes
1answer
392 views
On Qubes OS 4.0, how to get xl console access to sys-net?
I tried xl console sys-net which is something that works for any other VM (AppVM, TemplateVM), it even works for sys-net-dm (I don't know what that is though)
[ctor@dom0 ~]$ time sudo xl console ...
0
votes
1answer
1k views
libvirt and virt-manager - Unable to complete install: 'internal error: unsupported input bus usb'
I'm following the steps below to create a virtual machine using Xen as hypervisor and virt-manager (libvirt) as the management module. When trying to create the virtual machine I am getting the ...
1
vote
0answers
26 views
Trouble installing a Linux VM on XenServer 7
I've been struggling to get a Linux guest running on XenServer 7.5.
Here is a sequence of commands that I've been running -- don't get any errors -- except when I run the VM, it does not seem to be ...
1
vote
0answers
392 views
How does fstrim keep finding bytes to trim on a Xen PV dom0?
I have a Xen PV node running RHEL6 on the 3.10 kernel. This node has mdadm RAID1 and the following partitions:
[root@node ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md1 ...
1
vote
0answers
105 views
How can i change the resolution of the console that is provided by the XL toolstack?
How can i change the resolution of the console that is provided by the XL toolstack?
i use command like this:
xl console domU
This provides me with a console, but it seems, the resolution is too low....
0
votes
0answers
479 views
How can i create a bridge with the ppp0 interface?
How can i create a bridge with the ppp0 interface?
Currently i have a ppp0 interface (USB Modem) and i want to create a bridge to use it with the XEN DomUs.
Is this possible?
My current bridge looks ...
1
vote
2answers
3k views
Delete and reinstall a VM in a Xen server
How do I completely delete an old VM in a Xen host?
I want to reinstall the vm new from scratch with
xen-create-image --hostname=something --size=8Gb --swap=2Gb --memory=1Gb --ip=10.77.77.105 --...
2
votes
1answer
822 views
Xen: Graphical output on domU after secondary GPU passthrough
I have done a secondary GPU passthrough to a Linux domU, but I don't know how to output Xorg from the secondary GPU.
The dom0 is using an Intel integrated graphics card. I am passing through an AMD ...
0
votes
1answer
668 views
Does hypercall take the same time as a linux system call?
From Xen website,
A hypercall is to a syscall what a hypervisor is to an OS.
Alternatively, a hypercall is to a hypervisor what a syscall is to a
kernel. A hypercall is a software trap from a ...
1
vote
0answers
210 views
Creating a bridged network for HVM
I am trying to create an HVM, which I can do on my server but not attached to any NICs (even with trying to configure a bridged network). When I try to use xl to run the cfg file with the MAC address ...
2
votes
2answers
294 views
Are containers and hypervisors an alternative to multibooting GUI-based distros?
Soon I will need to test GUI applications on multiple distros. Previously I've done this with virtual machines on VirtualBox, but using them can be frustratingly slow. I have considered multibooting, ...
1
vote
2answers
320 views
Check if CVE-2016-10229 is fixed in my XEN Debian Linux Server
I use Debian jessie on a Xen server and now I am concerned about the issue CVE-2016-10229:
udp.c in the Linux kernel before 4.5 allows remote attackers to execute arbitrary code via UDP traffic ...
1
vote
0answers
13 views
Xen VM Login Access Reset or Alternate Method
I’m new to managing Xen servers and currently have a container that’s experiencing issues with network connection. The VM (from what I can tell) is starting up normally but doesn’t seem to have any ...
1
vote
0answers
155 views
Qubes (Fedora 23) won't login
I have been using Qubes 3.2 for 5 months now without any significant problems. Then, out of nothing, I can't login. Qubes passed to sddm login screen as usual, then I could choose from desktop ...
3
votes
2answers
1k views
XEN or KVM: which provides more reliable support for FreeBSD/OpenBSD guests?
Which hypervisor provides more reliable support for the most popular two BSDs?
I read an article that Linode moved to KVM from XEN, and found a page named 'guest support status' on linux-kvm.org, but ...
1
vote
1answer
626 views
Xen server VM creation on ubuntu server
I have some problems in creating VM guest.
I'm executing xl create /etc/xen/config_vyos.cfg
and getting an error:
Parsing config from /etc/xen/config_vyos.cfg
libxl: error: libxl_bootloader.c:637:...
-1
votes
1answer
169 views
Baremetal hypervisors vs Virtual Box
I have mainly been using Virtual Box for a while but have recently started using Xen which as led me to questions about Type 1 hypervisors vs Type 2 hypervisors. I have read a lot about the ...
