def detach_volume(vm, volume):
"""Detach a Volume from a VM
The volume must be in 'IN_USE' status in order to be detached. Also,
the root volume of the instance (index=0) can not be detached. This
function will send the corresponding job to Ganeti backend and update the
status of the volume to 'DETACHING'.
"""
util.assert_detachable_volume_type(volume.volume_type)
_check_attachment(vm, volume)
if volume.status not in ["IN_USE", "ERROR"]:
raise faults.BadRequest("Cannot detach volume while volume is in"
" '%s' status." % volume.status)
if volume.index == 0:
raise faults.BadRequest("Cannot detach the root volume of server %s." %
vm)
with commands.ServerCommand("DETACH_VOLUME", vm):
jobid = backend.detach_volume(vm, volume)
vm.record_job(jobid)
log.info("Detached volume '%s' from server '%s'. JobID: '%s'",
volume.id, volume.machine_id, jobid)
volume.backendjobid = jobid
volume.status = "DETACHING"
volume.save()
def delete_volume(vm, volume, atomic_context):
"""Delete attached volume and update its status
The volume must be in 'IN_USE' status in order to be deleted. This
function will send the corresponding job to Ganeti backend and update the
status of the volume to 'DELETING'.
"""
_check_attachment(vm, volume)
if volume.status not in ["IN_USE", "ERROR"]:
raise faults.BadRequest("Cannot delete volume while volume is in"
" '%s' status." % volume.status)
if volume.index == 0:
raise faults.BadRequest("Cannot delete the root volume of server %s." %
vm)
action_fields = {"disks": [("remove", volume, {})]}
with commands.ServerCommand("DELETE_VOLUME",
vm,
atomic_context=atomic_context,
action_fields=action_fields,
for_user=volume.userid):
jobid = backend.delete_volume(vm, volume)
vm.record_job(jobid)
log.info("Deleted volume '%s' from server '%s'. JobID: '%s'",
volume.id, volume.machine_id, jobid)
volume.backendjobid = jobid
util.mark_volume_as_deleted(volume)
def unrescue(server_id, credentials=None):
with commands.ServerCommand("UNRESCUE", server_id,
credentials=credentials) as vm:
log.info("Unrescuing VM %s", vm)
job_id = backend.unrescue_instance(vm)
vm.record_job(job_id)
return vm
def resize(server_id, flavor_id, credentials=None, atomic_context=None):
vm = util.get_vm(server_id,
credentials,
for_update=True,
non_deleted=True,
non_suspended=True)
flavor = util.get_flavor(flavor_id,
credentials,
include_deleted=False,
for_project=vm.project)
action_fields = {"beparams": {"vcpus": flavor.cpu, "maxmem": flavor.ram}}
with commands.ServerCommand("RESIZE",
server_id,
credentials,
atomic_context,
action_fields=action_fields) as vm:
old_flavor = vm.flavor
# User requested the same flavor
if old_flavor.id == flavor.id:
raise faults.BadRequest("Server '%s' flavor is already '%s'." %
(vm, flavor))
# Check that resize can be performed
if old_flavor.disk != flavor.disk:
raise faults.BadRequest("Cannot change instance's disk size.")
if old_flavor.volume_type_id != flavor.volume_type_id:
raise faults.BadRequest("Cannot change instance's volume type.")
log.info("Resizing VM from flavor '%s' to '%s", old_flavor, flavor)
job_id = backend.resize_instance(vm,
vcpus=flavor.cpu,
memory=flavor.ram)
vm.record_job(job_id)
return vm
def start(server_id, credentials, atomic_context=None):
with commands.ServerCommand("START", server_id, credentials,
atomic_context) as vm:
log.info("Starting VM %s", vm)
job_id = backend.startup_instance(vm)
vm.record_job(job_id)
return vm
def connect_port(vm, network, port):
with commands.ServerCommand("CONNECT", vm):
associate_port_with_machine(port, vm)
log.info("Creating NIC %s with IPv4 Address %s", port,
port.ipv4_address)
job_id = backend.connect_to_network(vm, port)
vm.record_job(job_id)
return vm
def unsuspend(server_id, credentials=None, atomic_context=None):
if not credentials.is_admin:
raise faults.Forbidden("Cannot unsuspend vm.")
with commands.ServerCommand("UNSUSPEND", server_id, credentials,
atomic_context) as vm:
vm.suspended = False
vm.save()
log.info("Unsuspended %s", vm)
return vm
def stop(server_id,
shutdown_timeout=None,
credentials=None,
atomic_context=None):
with commands.ServerCommand("STOP", server_id, credentials,
atomic_context) as vm:
log.info("Stopping VM %s", vm)
job_id = backend.shutdown_instance(vm,
shutdown_timeout=shutdown_timeout)
vm.record_job(job_id)
return vm
def attach_volume(vm, volume, atomic_context):
"""Attach a volume to a server.
The volume must be in 'AVAILABLE' status in order to be attached. Also,
number of the volumes that are attached to the server must remain less
than 'GANETI_MAX_DISKS_PER_INSTANCE' setting. This function will send
the corresponding job to Ganeti backend and update the status of the
volume to 'ATTACHING'.
"""
# Check volume state
if volume.status not in ["AVAILABLE", "CREATING"]:
raise faults.BadRequest("Cannot attach volume while volume is in"
" '%s' status." % volume.status)
elif volume.status == "AVAILABLE":
util.assert_detachable_volume_type(volume.volume_type)
# Check that disk templates are the same
if volume.volume_type.template != vm.flavor.volume_type.template:
msg = ("Volume and server must have the same volume template. Volume"
" has volume template'%s' while server has '%s'" %
(volume.volume_type.template, vm.flavor.volume_type.template))
raise faults.BadRequest(msg)
# Check maximum disk per instance hard limit
vm_volumes_num = vm.volumes.filter(deleted=False).count()
if vm_volumes_num == settings.GANETI_MAX_DISKS_PER_INSTANCE:
raise faults.BadRequest("Maximum volumes per server limit reached")
if volume.status == "CREATING":
action_fields = {"disks": [("add", volume, {})]}
else:
action_fields = None
with commands.ServerCommand("ATTACH_VOLUME",
vm,
atomic_context=atomic_context,
action_fields=action_fields):
util.assign_volume_to_server(vm, volume)
jobid = backend.attach_volume(vm, volume)
vm.record_job(jobid)
log.info("Attached volume '%s' to server '%s'. JobID: '%s'", volume.id,
volume.machine_id, jobid)
volume.backendjobid = jobid
volume.machine = vm
if volume.status == "AVAILABLE":
volume.status = "ATTACHING"
else:
volume.status = "CREATING"
volume.save()
def set_firewall_profile(server_id,
profile,
nic_id,
credentials=None,
atomic_context=None):
with commands.ServerCommand("SET_FIREWALL_PROFILE", server_id, credentials,
atomic_context) as vm:
nic = util.get_vm_nic(vm, nic_id)
log.info("Setting VM %s, NIC %s, firewall %s", vm, nic, profile)
if profile not in [x[0] for x in NetworkInterface.FIREWALL_PROFILES]:
raise faults.BadRequest("Unsupported firewall profile")
backend.set_firewall_profile(vm, profile=profile, nic=nic)
return vm
def reboot(server_id,
reboot_type,
shutdown_timeout=None,
credentials=None,
atomic_context=None):
with commands.ServerCommand("REBOOT", server_id, credentials,
atomic_context) as vm:
if reboot_type not in ("SOFT", "HARD"):
raise faults.BadRequest("Malformed request. Invalid reboot"
" type %s" % reboot_type)
log.info("Rebooting VM %s. Type %s", vm, reboot_type)
job_id = backend.reboot_instance(vm,
reboot_type.lower(),
shutdown_timeout=shutdown_timeout)
vm.record_job(job_id)
return vm
def destroy(server_id,
shutdown_timeout=None,
credentials=None,
atomic_context=None):
with commands.ServerCommand("DESTROY", server_id, credentials,
atomic_context) as vm:
# XXX: Workaround for race where OP_INSTANCE_REMOVE starts executing on
# Ganeti before OP_INSTANCE_CREATE. This will be fixed when
# OP_INSTANCE_REMOVE supports the 'depends' request attribute.
if (vm.backendopcode == "OP_INSTANCE_CREATE"
and vm.backendjobstatus not in rapi.JOB_STATUS_FINALIZED
and backend.job_is_still_running(vm)
and not backend.vm_exists_in_backend(vm)):
raise faults.BuildInProgress("Server is being build")
log.info("Deleting VM %s", vm)
job_id = backend.delete_instance(vm, shutdown_timeout=shutdown_timeout)
vm.record_job(job_id)
return vm
def rescue(server_id, rescue_image_ref=None, credentials=None):
with commands.ServerCommand("RESCUE", server_id,
credentials=credentials) as vm:
if rescue_image_ref is None:
# If the user does not provide an image, the system should decide
# one based on the VM rescue properties
rescue_properties = vm.rescue_properties
rescue_image = util.get_rescue_image(properties=rescue_properties)
else:
rescue_image = util.get_rescue_image(image_id=rescue_image_ref)
# Rescue image field acts a 'RESCUING' state and should be assigned
# when a rescue action is issued
location = rescue_image.location
if rescue_image.location_type == RescueImage.FILETYPE_FILE:
location = path.join(settings.RESCUE_IMAGE_PATH, location)
vm.rescue_image = rescue_image
log.info("Rescuing VM %s with image %s", vm, location)
job_id = backend.rescue_instance(vm, location)
vm.record_job(job_id)
return vm
def disconnect_port(vm, nic):
with commands.ServerCommand("DISCONNECT", vm):
log.info("Removing NIC %s from VM %s", nic, vm)
job_id = backend.disconnect_from_network(vm, nic)
vm.record_job(job_id)
return vm
