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Fix migration that caused creation of Subnet for networks that did not
had enabled the 'dhcp' option.

Add 'created' and 'updated' datetime fields in Subnet model.

* Fix the name of a port not being saved
* Check the length of the name of a port is within acceptable limits

* Add a function logic/utils.py to check the length of a string and
raise an API fault with the corresponding message.
* Check the length of the name of servers/ports/networks/subnets

Do not have a default value from 'link' attribute of IP_LESS_ROUTED
networks. Instead if the admin does not specify a value in
network-create command, uniquely name the networks by with the
BACKEND_PREFIX_ID and network id, e.g. snf-link-42.

Since the size of IP pools is not automatically computed by the size
of corresponding subnet, the data migration must add sizes to all
existing IP pools.

Also add 2013 in package COPYRIGHT files.

Introduce command enforce-resources-cyclades, which checks for quota
violations and applies actions to enforce the limits. By default, it
operates only on these resources: cpu, ram, floating_ip.

Add 'name' attribute to newly created NICs. Currently, the name of the
NICs will not be used to refer to NICs, as it will be in Synnefo 0.15.
Names are added only to ease the migration to version 0.15. Also, this
commit updates snf-dispatcher to preserve the name of the NIC, if any,
when updating instance NICs.

Finally, the commit updates handling of firewall tags by adding a second
tag that contains the name of the NIC. The tags with the name of the
NICs will be kept in Synnefo 0.15, and the old tags with the index of
the NIC will be removed.

Extend migration file to delete NICs that belong to VMs that have
already been deleted. Such NICs may exist due to a bug in previous versions
of Synnefo, and are totally useless. Also, they must be removed because
they will appear as stale ports in the new network API.

Migration value of 'firewall_profile' attribute from '' to None.

Add basic support for quering a public IP address. All uses of this IP
address are returned which are currently rendered to a dummy template.

* Handle invalid user input

Use 'models.PROTECT' for 'on_delete' attribute for some ForeignKey
relationship between networking models. This will create a more "strict"
database and protect for unexpected data loss.

Return [] instead of None, if the field is null.

When ports are created from the API they do not have an IPv6 address.
The IPv6 address is only available after the MAC address of the
NIC(port) is known which is only available after the message from the
Ganeti backend has been received. However, dispatcher did not created
correctly the IPv6 addresses. This commit fixes this issue along with
some small code refactoring.

Fix bug in port tests that were introduced by latest changes in IPPool
manager.

Before implementing the Neutron API, each network had one IP pool that
contained the whole subnet CIDR. This changed since now we have multiple
IP Pools(with base and offset attributes) per network and this IP pools
do not contain the network, broadcast and gateway addreeses. This commit
fixes an old migration to add 'base' and 'offset' attribute to all IP
pool objects, and adds an extra step to old and not-initialized pools in
order to externally reserve those addresses.

* Do not delete the network from the DB if it has associated floating
  IPs. This should never be the case because a check is made before
  deleting the network, however this check is added for safety.
* Do not allow deleting a network if there are still ports configured on
  on that network. Until now this check was for machines, but there may
  be ports that are not connected to any machine.
* Delete subnet IP pools when network is deleted.
* Get network in locked mode in network-remove cmd.
* Log error if trying to release an IPv4 address that does not belong to
  any of the IP pools of the associated subnet.
* Excluded deleted IPv4 addresses when reconciling IP pools.
* Do not set the network action to destroy when removing network from
  some backend.

* Add snf-manage subnet-inspect
* Update return_end and return_start function in IPPool

Look up of ports should check the port userid and not the network
userid.

Extend POST /servers API call to support creation of servers that will
be using existing ports. Networking of the instance is defined via the
'networks' attribute which can contain either network UUIDs or port
UUIDs. In case of network UUIDs, the user can also request for a
specific IPv4 address. For example:

{"network":  [{"uuid": 41, "fixed_ip": "192.168.2.0"}, {"port": 42}]}

This patch also changes the 'floating_ips' attribute to contain not
IPv4 addresses of floating IPs, but the UUIDs of the floating IPs that
the user want to connect to the instance.

Allow creation of ports that are not connected to any instance. Such
ports will be in 'DOWN' state. To allow this, 'machine' attribute of
NetworkInterface model has been made to allow null values. Finally, the
'logic.ports' module has been remove, and the corresponding code has
been merged into 'logic.servers' module.

Fix bug when trying to allocate a specified IPv4 address. Only one of
the IP pools will contain this address, so you must bypass InvalidValue
exceptions until searching all pools.

Also PoolManager raised 'EmptyPool' exception when trying to allocate from an
empty pool. However, if someone tried to allocate a specific value,
'ValueNotAvailable' should be returned.

Create IPAddressLog DB table to hold information about allocation of IP
addresses to virtual servers. The information that is currently saved
contains the IP address, the ID of the virtual server, the ID of the
virtual network along with the datetime that the address has been
allocated and released from the server.

An entry in this table is created every time a NetworkInterface card
that has an associated IP address is created in DB. The entry is updated
with the 'released_at' timestamp when the NIC is destroyed in Ganeti.
Currently, only IP addresses from public networks (network.public=True)
are stored in this table.

This commit also includes a DB data migration for all already allocated
IP addresses. However, the 'allocated_at' timestamp of this entries will
not be correct.

Test that you can not create or delete a port on a machine
that is started if GANETI_USE_HOTPLUG is set to False.

 Neutron API defines the 'BUILD' status. This commit renames BUILDING
 state of NIC to BUILD.

Make changes to the floating-ips ip so that it complies with the
Openstack Quantum API.

Temporary commit to change default offset and size of IPPoolTable
factory.

Refactor tests so that they are aware that a network can have multiple
IP pools. Also, add extra check to PoolManager methods in order to check
whether a value is contained in the pool.

Fix default value for 'external' argument of release_address method of
Network model. Also fix how is checked whether an IP pool contains an
address.

Fix reconciliation to work with multiple IP pools per network:
* Fix reconcile-networks command to check if a reserved_ip in a Ganeti
  network is reserved in the pool that contains this IP (if any)
* Fix reconcile-pools to reconcile each of the networks IP pools and
  take into account only those IP address that are contained in the
  pool.

* Fix IP pools of subnets to take into account the 'offset' when searching
if a pool contains an IP address and when converting from value to index
and from index to value.
* Fix the way subnets are created from 'logic/networks'
* Rename 'validate_network_params' function to 'validate_subnet_params'
  and move it from 'networks' to 'subnets' packages.