0
votes
1answer
9 views

Linux xen directly boot windows domu?

I have the following situation: got a new notebook with Windows7 pre-installed (sda1 with boot partition, actual OS in sda2), one physical disk (sda) created an extended partition (sda3), inside ...
0
votes
0answers
56 views

xen:balloon: reserve_additional_memory: add_memory() failed: -17

We're running Ubuntu 14.04 on an EC2 virtual machine. I've been seeing a lot of these errors in our kernel log: [ 704.032085] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ ...
0
votes
2answers
67 views

PXE boot server on a xen PV guest?

I've set up a Xen hypervisor on ubuntu 14.04 and a PV guest also on ubuntu 14.04. I want this PV guest to be a PXE boot server. But when I look at the /boot folder I see that it's empty. I'm a newbie ...
2
votes
2answers
394 views

Ubuntu on VPS becomes unresponsive: BUG: soft lockup - CPU#0 stuck for 22s

We have a VPS running Ubuntu, on Xen. The problem is this, about once a day, for about 20-50 minutes, at a random time, the server becomes completely unresponsive to the outside world. After this ...
3
votes
1answer
675 views

Ubuntu 14.04 VPS won't boot the latest kernel on XEN

I have a XEN VPS and it's been running Ubuntu for some years now. AUtomatic security upgrades are on and I've manually upgraded it continously and also done releas-upgrades whenever there's been a new ...
2
votes
1answer
267 views

Xen SATA PCI Passthrough to Ubutnu DomU not recognising disks

I have a Xen 4.1 server with a Debian Wheezy 7.4 Dom0 (hmpyxen01). It has a SATA PCI card that I am passing through to an Ubuntu Precise 12.04 DomU (hmvmtmp01), installed via xen-tools which in this ...
0
votes
0answers
239 views

Xen USB Passthrough error - Can't add usb device to a guest with usb disabled in configure file

I have Lubuntu 13.10 installed as host. I installed xen 4.3.0 using apt-get and have created 1 guest which is Ubuntu 12.04 LTS. I am trying to pass through USB devices from Dom0 to DomU. "lsusb" on ...
1
vote
1answer
376 views

Xen dom0 reports incorrect amount of RAM with dom0_mem set

I've done a fair bit of searching about this, but have found nothing that answers my question. I have a system with 6GB of RAM which acts as a Xen server. For reference, it runs Ubuntu 12.04. I've ...
1
vote
2answers
382 views

Alternatives to bridging infiniband ipoib within xen domains?

I've installed xen-hypervisor-4.1 package onto an Ubuntu 12.04.3 server. It has an infiniband adaptor installed and I run IPoIB with it. What I'm wanting to do is provide the ipoib to one or more ...
0
votes
0answers
108 views

XEN, VM not starting after reboot VM

Ubuntu 13.04 raring, XEN 4.2 x64. When I reboot in VM OS, VM is shutdown and not starting automatically. (VM State is OFF.) Server message: [2013-09-05 17:37:43 20103] INFO (XendDomainInfo:2079) ...
0
votes
2answers
1k views

IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready & IPv6: ADDRCONF(NETDEV_UP): xenbr2: link is not ready on Ubuntu Server - Xen bridge

Hi all, I am having some problems getting a Xen bridge up in Ubuntu precise with Xen. I created a first bridge on eth1 with no problems, but the exact same process for eth2 yields the following ...
1
vote
2answers
317 views

fix kernel on Xen Server hypervisor vps

I have a cloud server hosted at Rackspace, and they use Xen Server hypervisor. I was running Ubuntu 12.04, and really messed up by attempting to do a release upgrade manually. The hypervisor ...
1
vote
1answer
329 views

Booting Ubuntu 12.10 guest on Debian 6.0.4 Xen with pygrub

I'm trying to run a Ubuntu 12.10 off a Debian 6.0.4 and Xen-4.0. I realised that pygrub might not be able to parse the menu.lst (I symlinked menu.lst to grub.cfg in /boot) and ended up with this ...
0
votes
2answers
592 views

Strange Ubuntu boot up warning

I have a VM (Xen based), I can boot up the machine but there are some warning during the boot up. Are they normal? If not, how to solved? md: Scanned 0 and added 0 devices. ...
0
votes
0answers
287 views

Xen 4.2.1 dom0 boot hang

I'm having some issues with booting xen dom0. Initially I started out with Ubuntu 12.04 LTS server and compiled and installed xen 4.2.1. Unfortunately, the machine wouldn't boot but would show a ...
0
votes
1answer
58 views

Xen domU sees 35MB less than assigned

I am using ubuntu precise 12.04 and I am booting a paravirtualized ubuntu 12.04 domU, all being 64 bits. The VM has memory=1024 assigned and xentop at the host correctly shows 1024MB, but htop in the ...
0
votes
1answer
596 views

Install Ubuntu Desktop from ISO on XEN

I've got XEN Hypervisor running on Debian as my base system. I understand VNC and conceptually installing PV based systems on my hypervisor but I'm getting stuck starting from scratch on a ISO-based ...
1
vote
1answer
1k views

How access a VM console in XCP?

I installed xcp-xapi package in Ubuntu 12.10. I have already created a PV VM in XenCenter, but I cannot access it's console -- when I choose the Console tab in XenCenter, I just got a blank page. I ...
1
vote
1answer
828 views

xen Dom0 network setup on ubuntu 12.04.1 LTS

I read a lot of tutorials (or at least try to be) but none is able to explain well how to configure networks for xen host. my Dom0 has two interfaces eth0 (real interfaces) and virbr0 (I guess was ...
3
votes
1answer
817 views

AppArmor - root: “You do not have enough privilege to read the profile set.”

I'm trying to use AppArmor on a remote hosted Xen server with a custom built kernel. AppArmor appears to be running, but not correctly. For example if I run the following command as root: # ...
1
vote
2answers
697 views

Troubleshooting poor disk IO performance

Note that while this question is a little Redis-specific, the main problem is generic: a process takes so much HDD IO write bandwidth that other processes can't write anything. We've got an Ubuntu VM ...
0
votes
3answers
2k views

Xen hypervisor 4.1 Kernel Panic on Ubuntu 12.04

I have a fresh Ubuntu 12.04.1 amd64 server install following this guide I have used LVM option used all disk and make 2 LV /dev/mapper/vg-root / (80GB) vg-swap swap (4GB) now i install xen with ...
1
vote
1answer
341 views

Virtualization on Atom D2700

Will paravirtualization work fine on Atom D2700 with 4 Gb RAM? Just several ubuntu/debian (maybe others) VM's with not heavy loads (LAMP for tests, torrent client, file server for PC and Mac etc.). ...
3
votes
2answers
622 views

Dedicated ip's for xen guests

I'm having a hell of an issue getting networking working in Xen on Ubuntu Server. Our server has a few public IPs (/29) that are all added through eth0 aliases. E.g. eth0 - main ip eth0:0 - first ...
1
vote
0answers
100 views

Ubuntu 10.04 Xen guest - why would time drift be proportionate with the system load?

We are trying to troubleshoot an issue with random system lockups during medium - heavy loads on an Ubuntu MySQL 5.1 server. There is nothing logging into the system during these lockups. The only ...
0
votes
1answer
449 views

Ubuntu kernel trace - troubleshooting “task hung for 120 secs” random crashes

I was finally able to get a trace from a 'task hung for 120 seconds' error. Our servers would just randomly crash on load spikes. IO wait times seem normal. Memory/Swap is fine. These are Xen based ...
4
votes
1answer
102 views

How does a VM hosted on xen knows that it is in a virtualized environment [closed]

I have read that in para virtualization hosted virtual machines are aware that they are being virtualized, and this allows them to increase their performance. But, how does the hosted machine know ...
3
votes
2answers
1k views

Can fragmented MySQL innodb tables cause I/O issues? “task hung for 120 seconds” crashes?

Large innodb databases with load spikes seem to be causing random crashes with "task hung for 120 seconds" in the console. There are no logs being written to the system during these crashes. The ...
-1
votes
2answers
5k views

How to decide between Xen or KVM? [closed]

I am going to set up a high availability hosting server (load balancer, mysql, apache, php, memcached, apc, possibly a distributed/network file system of some kind) with two nodes. I want to isolate ...
1
vote
0answers
111 views

XEN - (magic) networking issue

I have a very strange situation and do not know where to look. I have a XEN installed on Ubuntu 12.04 LTS. My hosting-provider does require, that every new IP my server uses has an own MAC-address. ...
2
votes
2answers
350 views

Randomly crashing Ubuntu 10.04 on multiple Xen VPS host instances

So we have Ubuntu 10.04 running - all 64 bit. Kernel 2.6.36 and 2.6.38-15 are having the same issues. Problem is random VPS servers are hanging. We have about 30 instances with this particular ...
0
votes
1answer
170 views

Xen make: you must install 'guilt' on your build machine

While trying to build Xen on my Ubuntu 12.04 Server system I see the following: package/xenclient/gcc/gcc.mk:30: warning: overriding commands for target `/home/hash/device/xen/dl/gcc-4.2.4.tar.bz2' ...
4
votes
3answers
7k views

Ubuntu 12.04 Netinstall URL? Xen Host

Well I have an Xen server, I've got a CentOS container up fine but a friend of mine wants (oh god) Ubuntu Server 12.04, why he can't use Debian is beyond my understanding. But anyways, I can't ...
-1
votes
1answer
264 views

Assigning Public IP on VM on XEN

Can anybody guide me in assigning public IP on VM running on Xen. after xen installation virbr0 with ip 192.168.122.1 has been created. we are having 4 public ip,we need to assign that to each VM.How ...
1
vote
1answer
3k views

Managing XEN through virt-manager on ubuntu 12.04

I have been trying to make xen work on a remote machine with no GUI.Installed XEN hypervisor on the machine and booted in that kernel.Try to create VM using virt-manager. I tried accessing ...
1
vote
1answer
586 views

Cannot use I/O in console for Xen HVM running FreeBSD/pfSense

I've been having a really hard time trying to get a Xen HVM using pfSense 2 (based on FreeBSD 8.1) working. I can make the machine run, and boot from an ISO image, but I cannot get I/O to work in the ...
-1
votes
1answer
592 views

xen won't start

Server IBM x3650 M3 Xeon E5506, 50G RAM, Ubuntu 12.10 grub.cnf menuentry 'Ubuntu GNU/Linux, with Xen 4.1-amd64 and Linux 3.2.0-24-generic' --class ubuntu --class gnu-linux --class gnu --class os ...
0
votes
1answer
766 views

Ubuntu 10.04 (LTS) DomU on Debian Wheezy Dom0 Xen 4

I have been forced to move from a Centos Dom0 xen 3 Centos + Ubuntu Lucid DomUs To Debian Wheezy Dom0 Xen 4 Ubuntu Lucid DomUs However although I can create new DomUs on wheezy I cannot ...
-2
votes
2answers
161 views

Turning physical linux server into several virtual servers [closed]

I'd like to create several virtual servers (all running linux) on my physical server. All of them will be used as headless servers - ie. they'd be the equivalent of an EC2 instance but running on my ...
0
votes
2answers
277 views

Buffer/Cache overflow Ubuntu 10.04 LTS Xen Rackspace

I'm running: Ubuntu 10.04 LTS Server AMD64 in a 512MB XEN paravirtualized environment. lighttpd v1.4.26 PHP v5.3.8 MySQL v5.1.41-3ubuntu12 The issue is: I first started on a '256MB account' which ...
0
votes
1answer
196 views

Citrix and Ubuntu Server / Ubuntu Clients for VDI

does anyone have any experience running ubuntu as a hosted desktop using XenServer have any reasons why I should not pursue this option?
2
votes
1answer
906 views

Ubuntu upstart hangs on interactive start & stop

How do I get Ubuntu upstart to not hang on interactive start & stop? I have created many upstart scripts that work fine during init, but often hang when I enter them at the console. If I CTRL+C ...
1
vote
1answer
447 views

Setting up Xen on Ubuntu 10.04 LTS (64bit) from a precompiled kernel

I'm looking for a way to install Xen(Dom0) on Ubuntu 10.04 LTS 64bit without having to compile my own kernel. I used to do this for 8.04 using this precompiled kernel: ...
0
votes
1answer
264 views

Xen 4.0.1 on ubuntu 10.10 server edition

i have a problem to booting xen kernel. At system start i obtain the next message: gave up waiting for root device. common problems: boot args (cat /proc/cmdline) check rootdelay= (did the ...
0
votes
1answer
525 views

How to investigate frequent but dissimilar data-loss events

I have a Xen domU provided by a third party, running Ubuntu (10.04, server edition, stock -server kernel). This server runs Dovecot and Exim4, with mail stored in Maildirs, and runs a fairly typical ...
1
vote
1answer
3k views

Bringing the xenbr0 interface up on XEN under Ubuntu 8.04

I installed XEN on Ubuntu 8.04 using this tutorial but after I reboot with the XEN kernel, I don't have xenbr0 device. I see that network-bridge script runs and it creates peth0 device, but not ...
2
votes
4answers
761 views

Xen and Ubuntu?

How does one properly approach having Ubuntu servers on a Xen hypervisor? I don't have any experience with RAID or Xen other than from a theoretical level. Additional requirements: Use with mdadm ...
4
votes
2answers
750 views

Cloud vs traditional iSCSI, xen, drbd, etc

I was wondering, how does a 'traditional' virtual machine setup with storage on iSCSI, with a fallback using DRBD, nodes with Xen installed the 'normal way', storing their images on the iSCSI target, ...
1
vote
3answers
1k views

how to create a lucid vm with xen?

i've just installed xen on my ubuntu 8.04. When i enter xen-create-image --ip=192.168.0.200 --hostname=newhost i get an hardy vm. but i would like to have a "newer" lucid vm. :/ when i use ...
0
votes
1answer
808 views

Xen 4.0.1 on Ubuntu 10.10 not booting

I'm trying to get Xen 4.0.1 run as dom0 on a fresh/clean install of 10.10 desktop (x64). Followed the step by step tutorial at http://wiki.xensource.com/xenwiki/Xen4.0 I have the pvops kernel in ...