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root / snf-cyclades-app / synnefo / logic / backend.py @ af6a3bc5

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# Date Author Comment
03992c72 09/19/2012 01:16 pm Christos Stavrakakis

Refactor bridge and mac-prefix pool tables

Redesign the implementation of pools and map mac-prefix and bridge pools
to that design.

Each pool type is mapped to a table in the database, and each row of
that table is a pool of that type. All pool tables must contain the...

341c818e 09/07/2012 05:41 pm Dimitris Aragiorgis

Enable hotplug during create_instance

This passes hotplug = True to ganeti and enables hotplug per instance.
It checks GANETI_USE_HOTPLUG setting.

Signed-off-by: Dimitris Aragiorgis <>

7fede91e 09/07/2012 05:36 pm Christos Stavrakakis

Implement multiple public networks

Implement multiple public networks in order to support:
- different public networks per backend
- non-consecutive IP ranges in each backend

To support this, public networks are treated different from private
ones. Namely, they are correlated with one backend (and so have...

296682fe 08/06/2012 11:45 am Kostas Papadimitriou

Support for ext disk providers

Extract provider from flavor disk template name and set the additional
`provider` parameter in disk options. Flavor disk_template should be
formated as `ext_<provider_name>`.

16ddd1fe 07/27/2012 07:26 pm Christos Stavrakakis

Add setting indicating whether to use hotplug

3165f027 07/27/2012 02:57 pm Christos Stavrakakis

Implement MAC Prefix Management

In order to guarantee uniqueness of MAC address accross all backends,
synnefo assignes a unique mac prefix to each network in each backend.

A mac-prefix of 20 bits, which is picked from the MacPrefixPool, is
assigned to each Network. The mac-prefix of the network in each...

aeb523a4 07/26/2012 06:29 pm Christos Stavrakakis

Get public network by public attribute

Do not find the public network by the primary key, as the initial_data.json
is obsolete. Instead, ise the public attribute of the Network Model.
Currently only one public Network is supported, and the used can not
create or delete the public Network. But this can easily change in the...

90b29b33 07/24/2012 02:27 pm Christos Stavrakakis

Fix creation of networks in new backend

2b36eda5 07/24/2012 02:26 pm Christos Stavrakakis

Fix bug in process_net_status

Check that nic has an ipv4 before trying to release it.

ad297723 07/23/2012 03:31 pm Christos Stavrakakis

Setting for using IP Pool to public network

Introduce new setting 'PUBLIC_ROUTED_USE_POOL', to indicate whether
synnefo will be responsible for the IP management of the public network,
or this responsibility will be delegated to Ganeti.

967d3f83 07/23/2012 12:16 pm Christos Stavrakakis

Transaction on create_instance

864bed43 07/23/2012 11:49 am Christos Stavrakakis

Implement model manager using row-level db locking

Implement ForUpdateManager that uses SELECT .. FOR UPDATE statement in
order to acquire row-level exclusive locks to DB. Essentially this
manager backports the select_for_update() method that is implemented in...

8a4a931d 07/23/2012 11:49 am Christos Stavrakakis

Fix IP pool exceptions

bd392934 07/23/2012 11:49 am Christos Stavrakakis

Release IP addresses when nics are destroyed

9c65f166 07/23/2012 11:49 am Christos Stavrakakis

Fix error state of BackendNetwork

77f0fa63 07/23/2012 11:49 am Christos Stavrakakis

Implement IP management

Delegate IP management to synnefo, in order to be able to allocate IP
addresses accross multiple Ganeti backends. This is achieved by creating a
Pool of IPs for each Network, in the form of a bitarray, which is stored
in the DB as a base64 string....

839e2bd0 07/23/2012 11:48 am Christos Stavrakakis

Update network settings

0196d9a3 07/23/2012 11:43 am Christos Stavrakakis

Add dirty bit to NetworkInterface

Extend NetworkInterface model with a dirty bit, indicating whether
the index of the NIC is consistent with the one in Ganeti. This flag is
set when deleting a NIC, and is switched off after processing the
notification from Ganeti. Removing a NIC with the dirty bit on is not...

91954b45 07/23/2012 11:42 am Christos Stavrakakis

Revert "Fix bug in dispatcher callback"

This reverts commit 5d40a128fb593ed641400c462f0e00a1b457f76e.

788a54be 07/23/2012 11:42 am Christos Stavrakakis

Remove machine if ganeti job fails

Set the VM deleted flag when receiving a failure notification for a
Ganeti OP_INSTANCE_REMOVE operation, even if the VM operstate is not
ERROR. The server may not exist in the backend not only because the
creation failed, but also because a remove notification was lost.

910f80db 07/23/2012 11:39 am Christos Stavrakakis

Fix bug in dispatcher callback

During handling of ganeti-op-status messages, state was set to error
only if the the opcode was OP_INSTANCE_CREATE. This resulted to
vm's never being deleted, if they did not exist in Ganeti.

36f4cb29 07/23/2012 11:39 am Christos Stavrakakis

Add backend method for removing a vm's nic

22ee6892 07/23/2012 11:39 am Christos Stavrakakis

Modification in logic for new-style networks

b3d28af2 07/23/2012 11:39 am Christos Stavrakakis

Synchronize networks when adding a new backend

fd65ab41 07/23/2012 11:36 am Christos Stavrakakis

Implement BackendNetwork model

Create a new model, to represent the state of each network in each
backend.

cc7c0f44 07/23/2012 11:33 am Christos Stavrakakis

Implement backend allocator and management command

New module implementing instance allocation to one of the available
backends. Allocation is performed based on memory and disk utilization.
Statistics for each backend are stored in DB and updated periodically....

f5b4f2a3 07/23/2012 11:33 am Christos Stavrakakis

Use the Backend client instead of global RAPI

Replace use of global RAPI client, with the cached client from the
VirtualMachine or Backend model.

Dispatch network actions to all backends.

1a894bfe 07/23/2012 11:33 am Christos Stavrakakis

New management commands concerning backends

- Create command to create a backend (snf-manage backend_create)
- Create command to modify a backend (snf-manage backend_list)
- Create command to list backends (snf-manage backend_modify)
- Modify listservers command to display the backend that hosts the VM

924d8085 07/23/2012 11:32 am Christos Stavrakakis

Rename backend_id to backend_vm_id

Rename backend_id field of VirtualMachine model to avoid conflict between the
backend that hosts the VM and the id that the VM will have on the backend.

28f83276 07/09/2012 03:38 pm Kostas Papadimitriou

Merge branch 'simplequotas' into queues+minor_net

ce55f211 07/02/2012 08:25 pm Kostas Papadimitriou

Simple per user quota mechanism for networks/vms

- New dict setting VMS_USER_QUOTA to allow setting per user quota
(overrides MAX_VMS_PER_USER setting)
- Private networks quota mechanism (based on MAX_NETWORKS_PER_USER and
NETWORKS_USER_QUOTA settings)...

c4e55622 06/06/2012 04:56 pm Christos Stavrakakis

Update modules interacting with AMQP

Update all modules which are interacting with the RabbitMQ messaging system to
use the AMQPClient in order to use highly available queues in active/active
mode.

Extend messages to include a unique identifier in order to handle...

1e239ea1 06/05/2012 12:32 pm Dimitris Aragiorgis

Minor change in rapi call

Ganeti 2.5 needs a tupple of length 3 for nics modifications.
So in ModifyInstance rapi call we pass (add, -1, {..}) for nis.

Signed-off-by: Dimitris Aragiorgis <>

3c755209 06/05/2012 12:32 pm Dimitris Aragiorgis

Take advantage of ganeti hotplug

No race condition. No need for ther NetworkInterface to have an
operstate. Hook runs during instance-modify and depicts the currently
existing nics. No reboot needed modification to take place.

Later in mutliple backend mac prefix handling should be done by synnefo....

9c21a2e2 06/01/2012 12:46 pm Christos Stavrakakis

Delete VM nics on update path

Delete VM nics when a message of type OP_INSTANCE_REMOVE has been received
from ganeti, and not when doing the RAPI call.

d1eaa651 06/01/2012 12:41 pm Christos Stavrakakis

Simplify disconnecting vm from network

Use the new option of Ganeti, to remove a specific nic.

7f691719 06/01/2012 12:38 pm Christos Stavrakakis

Use 'network' instead of 'link'

- Rename GANETI_PUBLIC_LINK to GANETI_PUBLIC_NETWORK
- modify create_instance of backend module

2035039b 02/24/2012 05:49 pm Giorgos Verigakis

Switch to the logging middleware

cc875294 02/02/2012 05:10 pm Giorgos Verigakis

Merge remote-tracking branch 'origin/master' into astakos-integration

Conflicts:
runtests.sh
snf-cyclades-app/synnefo/aai/__init__.py
snf-cyclades-app/synnefo/aai/fixtures/auth_test_data.json
snf-cyclades-app/synnefo/aai/middleware.py
snf-cyclades-app/synnefo/aai/models.py...

9c0ac5af 01/30/2012 06:55 pm Kostas Papadimitriou

Renamed snf-app to snf-cyclades-app