In this part I will discuss a possible solution to a problem I encountered several times already – failure to understand XenServer use of LVM, but first – a little explanation of the topic. XenServer makes extensive use of LVM technology in order to support the storage requirements of virtual disks. It is being utilized…
ndmpcopy is a wonderful command. It allows a fine-grained copy of files or directories between NetApp devices, across network, even if they do not use (or unlicensed) SnapMirror, SnapVault and the rest of the Snap* products NetApp offer. In this example I will show how to copy a LUN from one filer to the other….
One of the worst things you can have in XenServer, is some wize-guy performing a ‘forget storage’ on a storage device still holding virtual disks related to VMs. As XenServer database is internal (for the whole pool) and not per-VM, all references to this virtual disks disappear, and you remain with bunch of VMs without…
I have had a single node of a pool using a different license server. Temporary, unfortunately. It has expired, and as the purchase process was somewhat prolonged, I have had to extend it. I did not want to disconnect my other-four-hosts-pool from the permanent license server, which works so fine for the last year or…
I have had recently the pleasure and challenge of setting up VPN server for mobile devices on top of Linux. the common method to do so would be by using IPSec + L2TP, as these are to more common methods mobile devices allow, and it should work quite fine with other types of clients (although…
Using the GUI, it could be somewhat complex identifying a VM based on its MAC address. There are several solutions on the network using PowerShell, but I will demonstrate it using a simple bash script, below. Save, make executable, and run. Enjoy #!/bin/bash if [ -z “$1” ] then echo “Requires parameter – MAC…
