Ceph, Xen, and CloudStack: Semper Melior
summary
Ceph claims scale without downtime by using CRUSH placement and placement groups to stripe objects across OSDs, automatically rebalance and replicate hot objects, and remain strongly consistent; DreamHost runs multi‑petabyte clusters managed by a single part‑time admin. CloudStack integration arrives as a community plugin that makes RBD primary and removes the NFS template/backup mount (with snapshot/backup support targeting the next 0.2 release). Xen work centers on blktap2/libvirt storage adapters and an experimental libvirt plugin; orchestration uses Chef/Puppet/Ansible/Salt and Juju for deployment.
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chapters (29)
- 0:00Intro
- 0:45About me
- 1:29Overview
- 5:44Object Interfaces
- 5:54Ceph Basics
- 7:14Placement Algorithm
- 8:24Placement Groups
- 9:10Random Distribution
- 9:32OSDS
- 10:20Linux distros
- 11:00OpenStack
- 14:57Project Intersection
- 15:52Ganesha
- 16:15Zen
- 17:35CloudStack Client
- 18:25Gateway Drug
- 19:16Block Device
- 20:10Backend
- 20:37File System
- 22:17Deployment
- 22:30Orchestration
- 23:24Juju
- 24:33Community
- 25:33Keneth Graph
- 26:12Lists
- 26:26IRC Participation
- 27:56Developer Summit
- 28:30Project Ideas
- 28:42Questions
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