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Servers & Storage Feed

Sun Servers and Storage, Solaris, Oracle Linux, Red Hat Linux, Oracle VM for x86, Oracle VDI and Virtualization resources, news, and support articles.

Nova libvirt-xen driver fails to schedule instance under Xen 4.4.1 Hypervisor with libxl toolstack

UPDATE as of 16/04/2015
For now
is supposed to work only with nova networking per Anthony PERARD
  Neutron appears to be an issue.
  Please, view details of troubleshooting and diagnostic obtained (thanks to Ian   Campbell)

ApacheCon NA’15 slide deck: Operating CloudStack – Sharing my Tool Box

Here are the slides from my presentation at both ApacheCon and CloudStack Day in Austin, TX. Get the code on Github.Filed under: CloudStack Tagged: apachecon, cloudstack, python, talk

Oracle VM Server for SPARC 3.2 - Enhanced Virtual Disk Multipathing

Last month, Oracle released Oracle VM Server for SPARC release 3.2 which includes numerous enhancements. One of these is improvement for virtual disk multipathing, which provides redundant paths to virtual disk so that disk access continues even if a path or service domain fails.

Multipath groups are arranged in an active/standby pair of connections to the same physical media. In case of a path or service domain failure, I/O activity continues on a surviving path.

Redhat Cluster and Citrix XenServer

I wanted to write down a guide for RHCS on RHEL/Centos6 and XenServer.
If you want to do that, you need to go through two major challenges which you will encounter. I want to save on the search and sum it all up together here.

How to n-up pages in a PDF or PPT file via the command-line

Suppose you downloaded a PowerPoint or a PDF file from slideshare. You liked it so much that you wanted to print it out. But, alas, it was 50 pages long. This tutorial introduces the command-line tools to n-up a PPT or PDF file, i.e., batch multiple pages of the input file onto a single page on the output file. The output file is of the PDF format.To 2-up a file, you place 2 original pages on a single output page. Similarly, to 4-up a file, 4 original pages on a single output page. By n-upping a file, you drastically reduce the number of pages for printing.

Solution: Oracle VM Server Reboots

Posted on April 8, 2015, by mokum
By Roddy Rodstein 04/06/2015This post is applicable to all Oracle VM Releases, Oracle Exadata X5-2, Oracle Exalogic, Oracle Database Appliance (ODA), and the Oracle Virtual Compute Appliance (VCA).

Food Keeper App

The FoodKeeper can help consumers use food while at peak quality and reduce waste. The storage times listed are intended as useful guidelines and are not hard-and-fast rules. Some foods may deteriorate more quickly while others may last longer than the times suggested.

Adding a KVM cluster with NSX networking to CloudStack

As KVM seems more and more interesting, at work we wanted to do a Proof-of-Concept. The KVM hypervisor cluster had to be controlled by CloudStack and also integrate with NSX (formerly known as Nicira). NSX is owned by VMware these days and is one of the first Software Defined Networking solutions. At Schuberg Philis we […]

IPoIB working modes

The IPoIB driver supports two modes of operation: Unreliable Datagram (UD) and Connected Mode.
In Unreliable datagram mode, the IB UD (Unreliable Datagram) transport is used and so the interface MTU has is equal to the IB L2 MTU minus the IPoIB encapsulation header (4 bytes).  In QDR, the default NTU value is 2044. In FDR onwards, the default MTU value for Unreliable Datagram is 4096.

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