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XenServer

Installing CoreOS on a XenServer VM

This guide can be used to install CoreOS on a XenServer VM. We will use PXE to boot a fresh VM, SSH into the box, run the install script, fix an issue with kexec not being available on XenServer, and

jansipke 2014-11-072021-09-12 Cloud Computing 4 Comments Read more

Fixing “Another operation involving the object is currently in progress” on XenServer

Sometimes XenServer does not allow you to shutdown or reboot a VM because “Another operation involving the object is currently in progress”. It would be nice to see what that operation is and be able to terminate the operation from

jansipke 2014-07-142021-09-12 Cloud Computing No Comments Read more

Fixing “unable to find partition containing kernel” on XenServer with Ubuntu VM

Sometimes an Ubuntu VM doesn’t start up anymore on XenServer. The following error is shown in XenCenter: Error: Starting VM ‘My VM’ – Using <class ‘grub.GrubConf.Grub2ConfigFile’> to parse /grub/grub.cfg – WARNING:root:Unknown directive load_video – WARNING:root:Unknown directive terminal_output – WARNING:root:Unknown directive

jansipke 2014-03-172021-09-12 Cloud Computing 2 Comments Read more

Restoring backup of VM in XenServer

In a previous article we looked at backing up running VMs in XenServer. In this article, we will see how a backed up VM can be restored. Login to the console of the host machine you want the restored VM

jansipke 2014-01-162021-09-12 Cloud Computing No Comments Read more

Installing Ubuntu 12.04 LTS on a XenServer VM

The following steps can be taken to install Ubuntu 12.04 LTS on a VM running on XenServer 6. Unfortunately there is no standard template for Ubuntu 12.04 (at least in XenServer 6.0.2 which I used for testing), so we need

jansipke 2013-08-222021-09-12 Cloud Computing 1 Comment Read more

Rebooting a stuck VM on XenServer

Sometimes a VM on XenServer gets stuck. Trying to reboot it from XenCenter results in the error message “Another operation involving the object is currently in progress“. There are some steps that can be taken to reboot the VM from

jansipke 2013-08-122021-09-12 Cloud Computing 1 Comment Read more

Increasing CentOS LVM disk size on XenServer

The disk size of a CentOS virtual machine on XenServer can be increased with the following steps. The current VM contains one disk of 8 GB which is divided into a boot partition and an LVM partition: # fdisk -l

jansipke 2012-12-072021-09-12 Storage 18 Comments Read more

Installing Ubuntu 10.04 on XenServer 6.0.2 with guest tools

In a previous article a couple of years ago I wrote about the possibility to install the XenServer guest tools on Ubuntu 10.04. The situation has changed for the better with the release of XenServer 6, which supports Ubuntu 10.04

jansipke 2012-09-042021-09-12 Cloud Computing No Comments Read more

Deleting XenServer templates

Sometimes XenServer doesn’t allow you to delete templates from the XenCenter GUI or even the CLI. Here is how to delete templates from the CLI in three steps: Tell XenServer the template is not a default template Convert the template

jansipke 2011-06-292021-09-12 Cloud Computing 3 Comments Read more

Creating backups of running VMs in XenServer

With XenServer it is possible to create backups of VMs, even if they are running. The process is as follows: Search for the uuid of the VMs to backup Create a snapshot of each (running) VM Save the snapshot to

jansipke 2010-12-062021-09-12 Cloud Computing 40 Comments Read more
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