The document summarizes new features and enhancements in OpenNebula 4.14, including disk and image snapshotting, recovery mechanisms for virtual machines, disk showback, GPU device support, cloning and importing running VMs, migration across datastores, and cold attach/detach of network interfaces and disks. It also discusses rewrites to the Sunstone management interface and the ability to resize disks when instantiating virtual machines.

1. Techday Paris 2015 @ IPPON
Paris, France, July 8th
© OpenNebula Project. Creative Commons Attribution-NonCommercial-ShareAlike License
OpenNebula is Evolving…
Fast!
Jaime Melis
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2. Agenda
● OpenNebula 4.14
● Disk and image snapshotting
● Recovery mechanisms for VMs
● Disk showback
● GPU devices from a VM
● Sunstone Refactor
● Cloning of running VMs
● Import running VMs
● Migration of VM across Datastores
● Cold Attach/Detach NIC and disk.
● Image Resize
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3. 3

4. Great A'Tuin
the turtle comes, swimming slowly through the interstellar
gulf, hydrogen frost on his ponderous limbs, his huge and
ancient shell pocked with meteor craters. Through sea-
sized eyes that are crusted with rheum and asteroid dust
He stares fixedly at the Destination.
Terry Pratchett - The Colour of Magic
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5. OpenNebula 4.14
● Great A'Tuin
● Last one before 5.0
● Big Release (lots of changes)
● Compatibility Guide
● Beta end of July. Final release early
September
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6. Disk and image snapshotting
● Disk snapshots are a new entity
● Create, Revert, Delete
○ running, poweroff, suspended
● Subject to Quotas
● Monitor snapshot size
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7. Disk and image snapshotting
● Can be exported to a new image
○ $ onevm disk-saveas
○ STATES: running, poweroff, suspended
○ --deferred is deprecated
● Persistent images can have snapshots
○ operations: flatten, revert, delete
● 3 implementations: Ceph, FS (plain files) and
Qcow2,
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8. Disk Showback
● OpenNebula <= 4.12
○ CPU_COST
○ MEMORY_COST
● New DISK_COST is introduced
● It's a MB/hour metric
● Defined in the template
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9. Recovery mechanisms for VMs
● OpenNebula is much more recoverable
● Any state can now be recovered
○ --success
○ --failure
○ --retry
○ --interactive
● FAILED state is now:
BOOT_FAILURE,
PROLOG_MIGRATE_POWEROFF_FAILURE, etc...
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10. GPU Devices
● GPUs discovered by the monitorization
probes
● Can be added to a template
● Passthrough to the VM
● Subject to Quotas
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11. Sunstone Rewrite
● Modularization
● Templates System
$ git diff --stat release-4.12 master src/sunstone | tail -n1
823 files changed 273254 insertions(+), 201083 deletions(-)
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12. Sunstone Rewrite
Zones-tab.js
OpenNebula 4.12: 390 lines
Before...
more
pages...
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13. Sunstone Rewrite
Zones-tab.js
OpenNebula 4.14: 36 lines
After...
more
pages...
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14. Cloning of running VMs
Provides the ability to clone a VM along with its
reference disks and networks.
$ onevm save <vmid> <name>
Clones the VM's source Template,
replacing the disks with live snapshots
of the current disks. The VM capacity and
NICs are also preserved
States: POWEROFF
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15. Import of Existing VMs
● KVM, Xen, AWS, Azure and vCenter
● The monitoring probes detect wilds
● wild VMs can be imported
● The life-cycle can be managed
Limitations:
● Delete --recreate
● Undeploy (and Undeploy --hard)
● Migrate (and Migrate --live)
● Stop
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16. Migration of VMs datastores
The System datastore of a VM can be migrated.
$ onevm migrate <range|vmid_list>
<hostid> [<datastoreid>]
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17. Cold Attach / Detach of NICs and DISKS
These operations can now be executed in the
POWEROFF state.
$ onevm disk-attach <vmid>
Attaches a disk to a running VM. When
using --file add only one
DISK instance.
States: RUNNING, POWEROFF
valid options: file, image, target,
cache, prefix
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18. Disk Resize
Possibility to resize the size of a VM disk when
instantiating the VM.
This does not perform the resize within the
Guest OS, it will only resize the container.
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19. Questions?
We Will Be Happy to Answer any Question
Building your Enterprise-ready Cloud with OpenNebula
@opennebula
You are missing a lot if you do not
upgrade!
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