XEN is a hypervisor based virtualization technique.
1
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0answers
47 views
Scrambled Xen Console on dom0
I installed Xen using the recommended procedure on Ubuntu's site using motherboard Supermicro X7SBL-LN2 and Ubuntu 13.04 amd64. After the installing it and rebooting my console looks like this: ...
1
vote
2answers
235 views
ext3 root filesystems goes read-only with aborted journal even after repairs
Short version: ext3 root filesystem on rackspace (xen) VM detects aborted journal on boot and mounts read-only. I've attempted to repair this from a rescue environment with tune2fs and e2fsck as ...
0
votes
0answers
20 views
Crash analysis and 4 levels of page table
I am having xen 3.4.2 running with 15 vm (pv+hvm) on a host with 256 Gb RAM and 96 core CPU.
But recently my host crashed on debug log its showing
translating ffff83183fcb0000 with CR3 100ae42000 ...
6
votes
1answer
618 views
BUG: soft lockup - CPU# stuck for x seconds
I've seen a few bug reports and questions (on stackexchange and elsewhere) regarding a nagging "BUG: soft lockup - CPU#<n> stuck for <dt>s!". So far, I haven't found any clue as to what ...
13
votes
3answers
263 views
Horrible situation - file systems mounted simultaneously by multiple independent OS instances
How do I get out of this situation safely?
Details are as follow:
A xen server has got block devices allocated to VMs. But these devices have also been mounted inside Xen.
In fact 44 of these ...
1
vote
2answers
107 views
Xen: Migrating LVM-based machines from Xen Opensource to Xen Cloud Platform
we have several LVM-based VMs running on a Xen Opensource host. "LVM-based", in our case, means that there's a LVM volume for the root partition and another volume for the swap partition. The kernel ...
0
votes
0answers
17 views
lshw takes to much time in the when running it the Domain-0 of a Xen server
I have a server running Debian 6 with Xen. I logged in its Domain-0 and I run lshw short but it takes to much time. More than 10 minutes. So I kill the process. The server is OK, but I don't know why ...
1
vote
0answers
192 views
Use dd to backup disk image within an OpenVZ container
I want to use dd to backup the disk of an OpenVZ VPS in addition to traditional cold tar backups. Because I may need to migrate to a different VPS provider.
From end user point of view, OpenVZ ...
1
vote
0answers
117 views
Xen is unable to use URL's to install CentOS
I can't seem to use URL's when using the netinstall for CentOS, I'm installing CentOS on a Xen VPS.
I keep getting this error in the terminal window, when I use the URL:
...
-1
votes
1answer
33 views
How to share virtualized OSs with users in network? [closed]
I was told that if we create multiple Virtualized OSs which will be performing different tasks like Backup , Firewall so how other users in same network can access them ?
0
votes
0answers
82 views
How to assign an IP to a Xen VM using the xm config files?
I was just wondering how to assign an IP to a Xen VM using the xm config files?
Here is my config file currently, I don't think this is how I should be assigning IP's?
name = "test.ks"
builder = ...
2
votes
0answers
120 views
XEN Bootloader or Kernel error bootloader isn't executable / cannot locate kernel when using XM create
I am currently using Xen for installing VM guests however whenever we run
xm create -c /etc/xen/ks.test.cfg
we get;
Using config file "/etc/xen/ks.test.cfg".
Error: Bootloader isn't executable
...
1
vote
1answer
100 views
Xen error on CentOS
During the creating of a new virtual server in xen using this command
xen-create-image --hostname=minecraft.koanhosting.com --ip 87.98.249.146 --install -method=debootstrap
But I keep getting this ...
1
vote
1answer
812 views
Guide to installing Xen on CentOS 5.9 (That is still valid)
I need an idiots guide to installing Xen Hypervisor on CentOS 5.9
We attempted to install it on 6.3 before, but completely failed, so we reverted to 5.9 to see if we had more luck. We had issues ...
0
votes
2answers
56 views
Create a CentOS Guest img over Ubuntu
I want to create a basic CentOS 5.8 system from scratch.
for now i build my own img for Ubuntu Guest (debootstrap), my host is a Ubuntu 12.04.1LTS but I don't know how to make for a CentOS, is ...
1
vote
3answers
617 views
XEN Storage Repository has option type=lvm missing (XCP)
Several online documents on this subject talk about creating an SR with the option type=lvm but trying these:
# xe sr-create type=lvm device-config:device=/dev/server/sr_guest1
name-label=sr1
...
4
votes
2answers
425 views
How do I configure Xen GPU passthrough for my AMD Radeon GPU?
I have an Ubuntu Server 12.10 setup with Xen 4.2.0 installed (compiled from source) and an AMD Radeon 7750 GPU. My Xen installation appears to be working and I can create virtual machines for example.
...
0
votes
0answers
117 views
Error when starting blender: 48000hz instead of 41000hz
I'm try to install blender in my Xen guest (Debian Wheezy), and when I try to start the render blender file via command line, the console shows this:
$blender -b CarPark.blend
AL lib: ...
2
votes
0answers
614 views
PCI passthrough with Xen
I am trying to run Windows XP in a Xen DomU virtual machine with a PCIe device, for which there are no Linux drivers, being passed through from a Debian Squeeze Dom0. My hardware supports ...
0
votes
1answer
396 views
Xen / Grub2 - Domain 0 allocation causes boot panic
Current setup / versions :
Ubuntu Desktop 12.04
Linux 3.2.0-32
Xen 4.1-amd64
Grub2
After following the documentation to set up xen-hypervisor-amd64 and configuring grub2, when I reboot I get the ...
2
votes
2answers
505 views
Xen, bridge and multiple IPs on CentOS
There's a new server that is assigned 5 IP addresses. I want to use Xen to run several VMs with various services.
This is my first attempt to install Xen, I use this tutorial as a guideline. Stuck ...
0
votes
0answers
101 views
Unable to boot Xen 4.1.3 with kernel image shared through cifs
I've configured xen 4.1.3 with CentOS 6.3 and kernel version 3.5.3. I've vm images to my network shares over cifs. cifs is mounted and i can access it from my Dom0 but when try to boot vm using the ...
2
votes
2answers
645 views
What is /dev/xvde1?
I'm having to do with an OpenShift RHEL Linux installation running on Amazon EC2. In the filesystem, there is a device file named /dev/xvde1 mounted to / ... and a device file named /dev/xvde2 mounted ...
4
votes
2answers
161 views
How to backup entire xen dom0 (on debian)
How do you go about creating a bootable backup ISO of my computer (dom0)?
I have tried remastersys and this backs up everything but Xen does not work properly. LiveCDs also do not work.
Does ...
3
votes
1answer
970 views
Why would my Linux host suddently stop receiving multicast? All other nics on private network are receiving
Here is my dilemma. Suddenly, as of yesterday, multicast packets are no longer being received from eth1 (private gigabit network) from one node. Routing between all the nodes is fine, no collisions, ...
1
vote
1answer
55 views
vpn conntect over an additional server
I (A) want to connect to my virtual XEN-server (B) with Ubuntu OS via vpn. This server (B) should than connect to another server (C). The traffic should be routed from A to C. C is using CISCO VPN. ...
2
votes
2answers
431 views
Different Kernel in DomU than in Dom0 on xen
If my Dom0 on Xen is kernel 2.6.18 with xen 3.3.1 can i boot a, say, 2.6.34 kernel in a DomU ?
Background: 2.6.18 runs like a charm on Dom0. Don't want to update here, because there is special ...
7
votes
2answers
541 views
Tools for Monitoring Steal Time (st)
We're running on a virtual "dedicated" server, which should, in theory, mean that we're the only guys on the server. In practice.... I'm thinking we might not be.
Notice that although it looks ...
0
votes
1answer
610 views
how to make a large ISO storage on xen cloud platform (XCP) or XenServer
i've downloaded XCP 1.5 beta from http://www.xen.org/download/xcp/index_1.5.0.html. i've managed to install it too. my physical system specifications are
3.01 GHz i7
24 GB Ram
3 TB HDD
now i would ...
2
votes
2answers
2k views
telnet to localhost and loopback device IP works, but not LAN ip (Xen + Ubuntu)
I have set up Xen + Ubuntu per the instructions at https://help.ubuntu.com/community/XenProposed. I am now ready to install a HVM guest OS (Ubuntu Desktop 12.04). After I start my HVM guest OS
xen ...
5
votes
2answers
4k views
domain 'ubuntu-hvm' does not exists, xen + ubuntu, hvm guest os installation problem
I am following the installation/setup instructions at https://help.ubuntu.com/community/XenProposed to install ubuntu + xen. I was able to install a PV guest OS. However, when I got to the HVM guest ...
0
votes
0answers
285 views
Troubleshooting Bug: Soft Lockup
We're having some trouble here with "soft lockup"s in our /var/log/syslog. The system seems to freeze for 10-70 seconds, then comes back. This is affecting web serving and other key processes. It ...
2
votes
2answers
276 views
What to do when ubuntu-vm-builder completed?
I already have the VM (Xen based) installed, but the Xen config used specified "Linux kernel" as "None".
The exact command line was:
ubuntu-vm-builder xen precise -v --debug --addpkg openssh-server
...
1
vote
1answer
396 views
Difference between Oracle VM and Citrix XEN?
I`ve been testing Oracle-VM this day. Is there anyone out there who has tested both XEN-based solutions?
What are the main differences?
1
vote
1answer
675 views
How to increase Xen guest CPU utilization?
My Xen dom0 is a Gentoo x64 pvops. I boot my guest Gentoo, in PV mode, system with the same kernel my dom0 uses. When I emerge in the guest system, building a CPP package, I am experiencing low CPU ...
3
votes
1answer
428 views
Xen domU fails to start with kernel panic
My dom0 is Gento 3.3.2, the kernel is compiled with Xen support. And I am planing to use the same kernel to boot my domU.
This is my domU configuration file:
1 vif = [ 'bridge=xenbr0' ]
2 vcpus ...
2
votes
1answer
402 views
Learning how to build my own linux kernel
Reference - http://www.linode.com/wiki/index.php/PV-GRUB#Building_Your_Own_Kernel
In order to work with Xen, a number of options that must be selected:
CONFIG_PARAVIRT_GUEST=y
CONFIG_XEN=y
...
2
votes
1answer
965 views
PCI passthrough without VT-d
My CPU is Intel T9300, it supports VT-x, but it does not support VT-d. I am using Xen pvops virtualization. I have a PCI device, and my host system can work without it. So I am thinking if it is ...
4
votes
2answers
361 views
VM benchmark tools?
I would like to benchmark of few XEN-constallations:
PV DomU
HVM DomU with PV network and disk drivers
HVM DomU with emulated IDE and PV network
The base will be the same VM with the same ...
2
votes
1answer
746 views
no network on domU in network-bridge configuration for Xen-4.0
I created a very standard Xen-4.0 domU with network-bridge configuration. However, no packets get out from the virtual machine to the network which bridge (peth0) is attached to. From guest I can ping ...
6
votes
2answers
263 views
Mysterious write IO
I am just reviewing the disk IO of a XEN VM server. I stumbled across a DomU that has constant write traffic.
To narrow that traffic further down I logged in to the DomU (CentOS 5, 64 Bit) and ...
3
votes
1answer
679 views
Running xen inside VirtualBox , possible?
Can i run a Linux system inside VirtualBox or VMware , with xen kernel ?
It's not intended for a real server or production workplace , just to learn the configuration of XEN.
BTW: target computer ...
3
votes
2answers
2k views
Unable to boot VM: Error 13: Invalid or Unsupported Executable Format
I used VMWare vConverter and everything converted fine, but when I try to boot I get an error:
The physical machine boots correctly, so I don't think it is a source machine issue. I am not sure why ...
1
vote
1answer
381 views
What kind of installation should I choose from CentOS to have it as dom0 xen host?
I want to have CentOS 6.0 x86_64 as a dom0 xen host. During the installation of CentOS there are many options for installation: "minimal" "Basic Server"... "Virtual Host"..
The question is: which one ...
3
votes
2answers
138 views
Live-migration of a SLES9 DomU?
With SLES9 SP4 we managed to set up a XEN PV DomU.
We are using SLES10 SP4 as Dom0 and DRBD 8 as disc-backed: a drbd-device corresponds to xvda in the DomU. The DomU uses the xenblk and xennet ...
1
vote
4answers
687 views
OpenSolaris vs. Debian for Xen Hypervisor VM server
all.
I've just purchased a computer that I'd like to repurpose as a lab server. It's a six-core AMD processor with 8 gigs of ram (16 gig max) and a terabyte hard drive. My idea is to hose Windows, ...
2
votes
2answers
3k views
XenServer how can I shrink the virtual drive of XenServer domU?
How can I shrink the virtual drive of XenServer image?.
I gave 300Gb of space for one image (domU) and that was mistake. Now I want to shrink it. How can I do that?
The system is already set up and ...
6
votes
1answer
2k views
Xen on openSUSE 11.4
I have done a few installs of openSUSE to use as a Xen dom0 and have not got it working yet. These are the steps I followed:
Installed openSUSE 11.4 from Live KDE CD.
Installed all updates via ...
5
votes
1answer
814 views
Force X to use second video card so I can pass through first card to XEN VM?
So I am trying to get X to start on my second (PCI 02.00:00) video card and stop using the main card (PCI 1.00:00). I would like to do this because I want to pass through the PCI 1 card to a XEN HVM ...
1
vote
2answers
245 views
Multiple dom0's on a single Xen host?
I've recently been researching Xen, and this has come up as a quistion for me.
Is it possible to have more than 1 dom0 running on a single Xen host?
The reason I ask is that this is very similar ...
