RBD SR on XenServer - the manual way

Just in case someone is interested in mapping RBD device on XenServer manually, here is the way how to do it.

Reverting Cisco 1142n from Lightweight Mode to Autonomous Mode

You can convert any autonomous mode Cisco Aironet access point, to lightweight mode and back. When you upgrade one of these access points to lightweight mode, the access point communicates with a controller and receives a configuration and software image from the controller. Many access points purchased second hand might be in the lightweight mode and you will have to convert it back to autonomous mode to be able to use it as a fully featured access point at home for example.

Ceph Storage - Adding New Nodes (part 6)

After installing Ceph I decided to write a separate article on adding Ceph nodes, because this process can be used in general.

To add more ceph nodes you will need to prepare the Ceph nodes as described in my previous articles. Search for Ceph Storage articles and focus on the preparation.

Ceph - Debian Wheezy to Jessie Upgrade

Debian Jessie packages for Hammer became available, so it is time to upgrade. To my surprise I did not experienced any issues and a standard Debian upgrade procedure was everything I needed.

Ceph Storage - Ceph Node Preparation (part 3)

Before getting started with setting up the Ceph cluster, you need to do some preparation work. Make sure the following prerequisites are met before continuing the tutorial.