Javier Fontan - OpenNebula Developer

1. Techday Ontario 2015 @BlackBerry
Waterloo, ON Canada, July 10th
© OpenNebula Project. Creative Commons Attribution-NonCommercial-ShareAlike License
OpenNebula is Evolving…
Fast!
Javier Fontán
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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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