Questions tagged [xen]
XEN is a hypervisor based virtualization technique.
0
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0answers
21 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
14 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
115 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 ...
0
votes
0answers
11 views
No SVM flag to run virtual machines
I have a machine where i've installed an Ubuntu-studio distro. There i've tried to install the Xen kernel, the XAPI toolstack, and the OpenXenManager; by then i used to have the following results.
$ ...
0
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0answers
20 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
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1answer
33 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
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0answers
66 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 ...
0
votes
1answer
46 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-...
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0answers
67 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
178 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
31 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
327 views
Disk device paths Changes from xvd to sda, how do I change to xvd?, [closed]
OS Ubuntu '16.04.5 LTS'
Hypervisor Xen
This output is when sda
df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 4.0K 16G 1% /dev
tmpfs 3.2G 1.3M 3.2G ...
1
vote
0answers
67 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
241 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 $...
1
vote
1answer
46 views
After upgrade, Debian can access internet, but not local network [closed]
I recently upgraded from Jessie to Stretch, and now, while I get an ip address from my router (which is also showing up properly as my default gateway, at least according to "ip r"), and I can access ...
0
votes
1answer
158 views
On Qubes OS 4.0, how to get xl console access to sys-net?
I tried xl console sys-net which is something that works for any other VM (AppVM, TemplateVM), it even works for sys-net-dm (I don't know what that is though)
[ctor@dom0 ~]$ time sudo xl console ...
0
votes
1answer
373 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
38 views
Why Grub only sees disks but not partitions [closed]
I've been trying to setup Xen on EFI, and been following this manual. My bootloader lies on /dev/sdb, so I add -d /dev/sdb to the last efibootmgr command.
Device Start End Sectors ...
0
votes
0answers
43 views
Setup loopback graphdriver devices in a XEN vm
I use a Xen Debian 9 host.
there are no loopback devices in my vm:
# losetup -f
losetup: cannot find an unused loop device: No such device
When I try to install docker-ci this fails with the error ...
1
vote
0answers
22 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 ...
0
votes
0answers
29 views
How to find DNS name of Virtual Machines in XenServer?
I want to create a list of Virtual Machines on XenServer with a few details like
IP
DNS name
OS version.. etc.
When I run xe vm-list on a XenServer, the name-label parameter gives the name of VM ...
0
votes
0answers
35 views
I turned off a network interface of a virtual machine. How do I turn it back on from the host machine?
I connected to a virtual machine (Xen domU) with PuTTY and turned off the eth0. Now I can't go back in through PuTTY which was the idea but how can I turn it back on from the host machine? It is ...
1
vote
0answers
298 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
79 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
357 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 ...
0
votes
2answers
1k 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
615 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
411 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
153 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
237 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
303 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
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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
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0answers
140 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 ...
4
votes
2answers
798 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
394 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
144 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 ...
1
vote
0answers
274 views
Virtual Lab on a server. What hypervisor? Proxmox, OpenStack, ESXi?
I would like to run a virtual lab to show a piece of software - imagine 10 students, each using 3 VMs (somehow students shouldn't be able to touch each other's machines).
It's going to be a small ...
1
vote
0answers
86 views
Xen domU not resizing disk
My Xen server is using LVM for the domUs. I shutdown a domU and increased it's lv from 10G to 24G:
lvextend -L24G /dev/xen-disks/my_domu
which appears to have worked:
--- Logical volume ---
...
7
votes
2answers
2k views
Why cannot I ping an xen domU with Bridge mode connection?
I am on a Debian upgraded from 7.11 to 8.5, so the xen package is upgraded from 4.1 to 4.4.
I do not know much about networks, but when I see a diagram like this (taken from the Xen Networking wiki ...
1
vote
0answers
215 views
How to install Fedora on Xen with the LiveCD image?
I've managed to get the Fedora LiveCD image (Fedora-Live-Workstation-x86_64-21-5.iso) to boot in Xen using the following configuration:
name = 'fedora_x86_64'
memory = 1024
disk = [
'file:/path/...
2
votes
1answer
1k views
Bridged networking problem with Xen 4.6 and Ubuntu 16.04
I'm trying to setup a Xen virtualization on Ubuntu 16.04, and Xen 4.6.
My plan is to have 1 private network, as well as virtual servers with public IP addresses which should be accessible externally (...
0
votes
1answer
459 views
Xen + DRBD + Pacemaker on Centos7
So my current environment is centos7 on a pair of identical bare metal servers. I've installed drbd and carved up 3 x 100G block devices for DRBD to mirror. Then I installed a Centos7 image on one of ...
1
vote
1answer
546 views
Creating new SLES 12 VM on XenServer 6.5 fails
When I try to create a new SLES 12 VM on a XenServer 6.5 host it fails with this error message:
"Failed","Starting VM 'AAEB-PUBLIC218LY' Internal error: xenopsd internal error:
VM = 4d956449-...
1
vote
1answer
249 views
How to install CUDA on Linux Mint with Xen already installed?
Xen is installed on Linux mint. How to install CUDA without getting a black screen or command line on restart?
In other words, how to get Xen's Dom0 Mint Desktop with CUDA installed?
2
votes
0answers
851 views
Virsh (libvirt-bin) is not able to communicate with Xen server
I have installed the latest version of Xen server 6.5. Now I want to connect to it with virsh (libvirt-bin). When I do this I get the error
error:end of file while reading data: sh:nc:command not ...
0
votes
1answer
2k views
Qubes/Xen OS: access file manager for dom0
I hope somebody more experienced with Qubes specific terminal commands can help.
If the KDE manager is installed, how does one open via terminal input the file manager for 'dom0'? To browse 'Home' ...
1
vote
0answers
121 views
xen + libvirt share disks betwee VM on diferent hosts
I have another problem.
what I've done is:
We deploy 2 physical hosts with SLES 12 SP1 and install XEN hypervizor on both.
On each host we provide few block devices via FC.
On each host we deploy ...
0
votes
1answer
162 views
Restore a disk from a snapshot in XEN 4.6
I created a snapshot with
lvcreate -n snap01.vm01 -L 5G -s vg0/vm01.eclabs.de
now I did some stuff on my disk i don't want to keep and want to revert it to the snapshot point.
How do I restore the ...
5
votes
1answer
2k views
Networking problem with new Intel NUC
I recently got a new Intel NUC6i5SYH to replace my very old and not too powerful home server.
I've installed XenServer 6.5.0 (as was on the old server) and plan to just copy over the VM's and other ...
2
votes
1answer
3k views
Install Xen 4.6 on Debian jessie
I need to install Xen with LVM on my dedicated root server.
The current version Xen 4.4 in Debian jessie does not support the new Skylake intel processors.
I tried Debian stretch, which has Xen 4.6 ...
