Ceph Erasure Code Overhead Mathematics

Posted on Sat 30 November 2019 in hints-and-kinks • Tagged with Ceph • 2 min read

In a Ceph cluster, the frequent question, “how much space utilization overhead does my EC profile cause,” can be answered with very simple algebra.


Continue reading

Learn Ceph — For Fun, For Real, For Free!

Posted on Sat 25 May 2019 in presentations • Tagged with Conference, Ceph, Open edX • 1 min read

My lightning talk from Cephalocon 2019.


Continue reading

Geographical Redundancy with rbd-mirror

Posted on Tue 21 May 2019 in presentations • Tagged with Conference, Ceph • 1 min read

My presentation from Cephalocon 2019.


Continue reading

More recommendations for Ceph and OpenStack

Posted on Thu 03 August 2017 in hints-and-kinks • Tagged with OpenStack, Ceph • 5 min read

Our series on best practices for Ceph and OpenStack continues.


Continue reading

Importing an existing Ceph RBD image into Glance

Posted on Fri 17 February 2017 in hints-and-kinks • Tagged with Ceph, OpenStack • 3 min read

As an OpenStack/Ceph operator, you may sometimes want to forgo uploading a new image using the Glance API, because the process can be inefficient and time-consuming. Here's a faster way.


Continue reading