The document discusses the integration of GlusterFS with OpenStack, highlighting its features as a unified, distributed file system that offers multi-protocol and multi-interface access. It explains how Cinder volumes are supported by GlusterFS, including configurations and the ability to attach volumes to Nova instances. Additionally, it outlines ongoing work, such as support for manage/unmanage functionality and performance improvements.

1. Cinder – GlusterFS Integration
GlusterNight@openstack-paris
Deepak C Shetty
deepakcs@redhat.com
IRC: deepakcs

2. What is GlusterFS
Openstack Paris Summit 2
● Unified, Distributed file system
– It aggregates local storage of many servers into a single logical volume,
providing a global unified namespace across them
– You can extend the volume just by adding more servers, providing a out of the box
scale out architecture
– Completely user space & stackable via translators
– Works on top of commodity hardware
– Multi-protocol access (glusterfs, nfs, cifs)
– Multi-interface access (fuse, libgfapi)
● Features
– Distributed volume
– Replicated volume
– Striped volume
– Distributed-Replicated and many more
– Sync and Asyn replication
– Openstack integration with Nova, Cinder, Manila, Swift and Glance

3. GlusterFS overview
Unified Namespace
Openstack Paris Summit 3
Nova, Cinder,
Glance, Swift,
Manila
Nova

4. Cinder – GlusterFS
Openstack Paris Summit 4
● Available upstream
● 1 Cinder volume == 1 GlusterFS file
● Support raw and qcow2 format cinder volumes
● GlusterFS backed cinder volumes can be attached to Nova
instances in 2 ways
– Fuse
– Libgfapi
● Supports most of the Cinder APIs (including libgfapi based
snapshots)
● cinder.conf - glusterfs_shares_config lists the glusterfs
volumes to use in hostname:/volname format
– More info on configuring Cinder w/ GlusterFS is available @
http://docs.openstack.org/admin-guide-cloud/content/glusterfs_backend.html

5. Cinder – GlusterFS contd.
Openstack Paris Summit 5
● TODOs
– Manage/Unmanage support – WIP
– Cinder - GlusterFS upstream CI – WIP
– backup/restore for qcow2 and disks with
snaps
– Support for cinder volume replication
– Perf improvements - WIP

6. Cinder – GlusterFS contd.
Openstack Paris Summit 5
● TODOs
– Manage/Unmanage support – WIP
– Cinder - GlusterFS upstream CI – WIP
– backup/restore for qcow2 and disks with
snaps
– Support for cinder volume replication
– Perf improvements - WIP