The document outlines the integration of Cinder and Ceph with oVirt, detailing the functionalities of oVirt as a virtualization management platform and the properties of Ceph as a distributed storage system. It discusses how to securely manage and utilize Ceph storage within oVirt, including tips for registering Ceph secrets and handling shadowing of virtual machines. Future plans for enhancing oVirt's capabilities with Ceph are also briefly mentioned.

1. 1
Cinder-Ceph Integration With
oVirt
Maor Lipchuk
February 2016
Senior Software Engineer @ RHEV
Red Hat
mlipchuk@redhat.com
Irc.oftc.net server on #ovirt channel

2. 2
Agenda
● Introduction
● How all the pieces fall into place
● What oVirt can do today with Ceph
● oVirt future plans with Ceph

3. 3
oVirt in a Nutshell
● Open Source project started by Red Hat
● Virtualization management platform
● Built on linux's virtualization you already know:
● kvm, qemu, libvirt
● Manages:
Virtual Machines
Storage Domains
Virtualized networks

4. 4
oVirt in a Nutshell

5. 5
oVirt in a Nutshell
File Storage Domains
● NFS
● Gluster
● POSIX-Compliant FS
● Local
Block Storage Domains
● Fibre Channel
● iSCSI
● Ceph

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What Ceph is all about
Ceph ?
Fault-Tolerant
Open Source
Distributed Object Store
File System
Peta-Scale
Self-Healing
Data Durability
Integrity
CRUSH
Self-Managing
Software Base
Software-Defined Storage
Unified Storage

7. 7
Distribution
● Distributed object store and file system
● Efficient and fast I/O
● Replication supported

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Fault-Tolerant
● No single point of failure
● Self-healing

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Scale out up to the Exabyte level
● Can manage Petabytes of data
● One to thousands of hard drives
● Can manage billions of files
● Exabyte – 1000 PB, 1000000 GB approximately equivalent
to the amount of all the internet traffic in 2004.

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Ceph Architecture

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Integrating Ceph with oVirt
Cinder

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Cinder in a nutshell
● Cinder is a block storage service for OpenStack.
● Virtualizes pools of block storage devices – Ceph is the most
common one
● Provides end users with a self service API to request and
consume resources
● Orchestrates over 57 pluggable storage drivers

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Integrating oVirt with Cinder

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Woorea's OpenStack Java SDK
● A library which provides the ability to communicate with
OpenStack through its REST-API.
● Already used by oVirt engine for Keystone/Neutron/Glance
with resteasy-connector.
● Used to communicate with Cinder's REST-API

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Integrate all the components together
How all the pieces fall into place

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Create/Delete a Ceph Disk

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oVirt Integration With Ceph
Using Ceph and Cinder in a secure way
with oVirt

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Cinder/Ceph Integration - Secrets
● Ceph provides two authentication modes: None, Cephx
● Cephx - Ceph requires user authentication in a manner
similar to Kerberos.
● Ceph authentication provides a way to manage permissions
for users to view and manipulate information to/from
volumes.
● oVirt register those secrets upon any host/storage domain
activation.

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Cinder/Ceph Integration - Secrets
How oVirt registers Ceph's secrets

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Register Ceph Secrets – Flow Chart

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Register Ceph Secrets – Flow Chart

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Register Ceph Secrets – Flow Chart

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Register Ceph Secrets – Flow Chart

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Register Ceph Secrets – Flow Chart

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Secrets - Run a VM With Cinder Disks
Run a VM with Ceph disks in a
secure way through oVirt

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Secrets - Run a VM With Cinder Disks

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Secrets - Run a VM With Cinder Disks

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Secrets - Run a VM With Cinder Disks

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Secrets - Run a VM With Cinder Disks

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oVirt Snapshots with Ceph disks
oVirt different features using
Ceph snapshots

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Snapshots
● Cinder supports volumes and volume snapshots
● Preview/Commit and undo to test your VMs

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Snapshots – Live Snapshot
● Live Cinder snapshot
● Live remove of Cinder snapshots
VM
FR
EEZE
TH
AW
snapshot

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Snapshots – Clone VM/Template
● Support for cloning a VM from a snapshot
● Support for cloning a Template from a snapshot
snapshot
VM
Template

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Snapshots – Stateless VM
● Create a new Cinder volume based on the volume of the VM
● Once the VM is being shutdown the volume gets deleted.
Cinder Volume Cloned Cinder Volume
VM

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Future plans of oVirt with Ceph
Future plans

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Future Plans
● DR solution
● Monitoring
● Move disk (Between Ceph and traditional oVirt Storage)
● Your contributions are welcome:
http://www.ovirt.org/Community

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Questions?

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Links
● www.ovirt.org/Features/Cinder_Integration
● http://wiki.openstack.org/wiki/Cinder
● http://www.ceph.com/
● http://github.com/woorea/openstack-java-sdk

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THANK YOU !
http://www.ovirt.org
http://lists.ovirt.org/mailman/listinfo
#ovirt irc.oftc.net
mlipchuk@redhat.com