def __init__(self, **kargs):
self.conn = kargs['conn']
self.objstore = kargs['objstore']
self.task = TaskModel(**kargs)
self.vmstorages = VMStoragesModel(**kargs)
self.vmstorage = VMStorageModel(**kargs)
class VMSnapshotsModel(object):
def __init__(self, **kargs):
self.conn = kargs['conn']
self.objstore = kargs['objstore']
self.task = TaskModel(**kargs)
self.vmstorages = VMStoragesModel(**kargs)
self.vmstorage = VMStorageModel(**kargs)
def create(self, vm_name, params=None):
"""Create a snapshot with the current domain state.
The VM must be stopped and contain only disks with format 'qcow2';
otherwise an exception will be raised.
Parameters:
vm_name -- the name of the VM where the snapshot will be created.
params -- a dict with the following values:
"name": The snapshot name (optional). If omitted, a default value
based on the current time will be used.
Return:
A Task running the operation.
"""
if params is None:
params = {}
# if the VM has a non-CDROM disk with type 'raw', abort.
for storage_name in self.vmstorages.get_list(vm_name):
storage = self.vmstorage.lookup(vm_name, storage_name)
type = storage['type']
format = storage['format']
if type != u'cdrom' and format != u'qcow2':
raise InvalidOperation(
'KCHSNAP0010E', {'vm': vm_name, 'format': format}
)
name = params.get('name', str(int(time.time())))
task_params = {'vm_name': vm_name, 'name': name}
taskid = AsyncTask(
u'/plugins/kimchi/vms/%s/snapshots/%s' % (vm_name, name),
self._create_task,
task_params,
).id
return self.task.lookup(taskid)
def _create_task(self, cb, params):
"""Asynchronous function which actually creates the snapshot.
Parameters:
cb -- a callback function to signal the Task's progress.
params -- a dict with the following values:
"vm_name": the name of the VM where the snapshot will be created.
"name": the snapshot name.
"""
vm_name = params['vm_name']
name = params['name']
cb('building snapshot XML')
root_elem = E.domainsnapshot()
root_elem.append(E.name(name))
xml = ET.tostring(root_elem, encoding='utf-8').decode('utf-8')
try:
cb('fetching snapshot domain')
vir_dom = VMModel.get_vm(vm_name, self.conn)
cb('creating snapshot')
vir_dom.snapshotCreateXML(xml, 0)
except (NotFoundError, OperationFailed, libvirt.libvirtError) as e:
raise OperationFailed(
'KCHSNAP0002E', {'name': name, 'vm': vm_name, 'err': str(e)}
)
cb('OK', True)
def get_list(self, vm_name):
vir_dom = VMModel.get_vm(vm_name, self.conn)
try:
vir_snaps = vir_dom.listAllSnapshots(0)
return sorted([s.getName() for s in vir_snaps], key=str.lower)
except libvirt.libvirtError as e:
raise OperationFailed(
'KCHSNAP0005E', {'vm': vm_name, 'err': str(e)})
class VMSnapshotsModel(object):
def __init__(self, **kargs):
self.conn = kargs['conn']
self.objstore = kargs['objstore']
self.task = TaskModel(**kargs)
self.vmstorages = VMStoragesModel(**kargs)
self.vmstorage = VMStorageModel(**kargs)
def create(self, vm_name, params=None):
"""Create a snapshot with the current domain state.
The VM must be stopped and contain only disks with format 'qcow2';
otherwise an exception will be raised.
Parameters:
vm_name -- the name of the VM where the snapshot will be created.
params -- a dict with the following values:
"name": The snapshot name (optional). If omitted, a default value
based on the current time will be used.
Return:
A Task running the operation.
"""
if params is None:
params = {}
# if the VM has a non-CDROM disk with type 'raw', abort.
for storage_name in self.vmstorages.get_list(vm_name):
storage = self.vmstorage.lookup(vm_name, storage_name)
type = storage['type']
format = storage['format']
if type != u'cdrom' and format != u'qcow2':
raise InvalidOperation('KCHSNAP0010E', {
'vm': vm_name,
'format': format
})
name = params.get('name', str(int(time.time())))
task_params = {'vm_name': vm_name, 'name': name}
taskid = AsyncTask(
u'/plugins/kimchi/vms/%s/snapshots/%s' % (vm_name, name),
self._create_task,
task_params,
).id
return self.task.lookup(taskid)
def _create_task(self, cb, params):
"""Asynchronous function which actually creates the snapshot.
Parameters:
cb -- a callback function to signal the Task's progress.
params -- a dict with the following values:
"vm_name": the name of the VM where the snapshot will be created.
"name": the snapshot name.
"""
vm_name = params['vm_name']
name = params['name']
cb('building snapshot XML')
root_elem = E.domainsnapshot()
root_elem.append(E.name(name))
xml = ET.tostring(root_elem, encoding='unicode')
try:
cb('fetching snapshot domain')
vir_dom = VMModel.get_vm(vm_name, self.conn)
cb('creating snapshot')
vir_dom.snapshotCreateXML(xml, 0)
except (NotFoundError, OperationFailed, libvirt.libvirtError) as e:
raise OperationFailed('KCHSNAP0002E', {
'name': name,
'vm': vm_name,
'err': str(e)
})
cb('OK', True)
def get_list(self, vm_name):
vir_dom = VMModel.get_vm(vm_name, self.conn)
try:
vir_snaps = vir_dom.listAllSnapshots(0)
return sorted([s.getName() for s in vir_snaps], key=str.lower)
except libvirt.libvirtError as e:
raise OperationFailed('KCHSNAP0005E', {
'vm': vm_name,
'err': str(e)
})
def __init__(self, **kargs):
self.conn = kargs['conn']
self.objstore = kargs['objstore']
self.task = TaskModel(**kargs)
self.vmstorages = VMStoragesModel(**kargs)
self.vmstorage = VMStorageModel(**kargs)
class VMSnapshotsModel(object):
def __init__(self, **kargs):
self.conn = kargs["conn"]
self.objstore = kargs["objstore"]
self.task = TaskModel(**kargs)
self.vmstorages = VMStoragesModel(**kargs)
self.vmstorage = VMStorageModel(**kargs)
def create(self, vm_name, params=None):
"""Create a snapshot with the current domain state.
The VM must be stopped and contain only disks with format 'qcow2';
otherwise an exception will be raised.
Parameters:
vm_name -- the name of the VM where the snapshot will be created.
params -- a dict with the following values:
"name": The snapshot name (optional). If omitted, a default value
based on the current time will be used.
Return:
A Task running the operation.
"""
if params is None:
params = {}
vir_dom = VMModel.get_vm(vm_name, self.conn)
if DOM_STATE_MAP[vir_dom.info()[0]] != u"shutoff":
raise InvalidOperation("KCHSNAP0001E", {"vm": vm_name})
# if the VM has a non-CDROM disk with type 'raw', abort.
for storage_name in self.vmstorages.get_list(vm_name):
storage = self.vmstorage.lookup(vm_name, storage_name)
type = storage["type"]
format = storage["format"]
if type != u"cdrom" and format != u"qcow2":
raise InvalidOperation("KCHSNAP0010E", {"vm": vm_name, "format": format})
name = params.get("name", unicode(int(time.time())))
task_params = {"vm_name": vm_name, "name": name}
taskid = add_task(
u"/plugins/kimchi/vms/%s/snapshots/%s" % (vm_name, name), self._create_task, self.objstore, task_params
)
return self.task.lookup(taskid)
def _create_task(self, cb, params):
"""Asynchronous function which actually creates the snapshot.
Parameters:
cb -- a callback function to signal the Task's progress.
params -- a dict with the following values:
"vm_name": the name of the VM where the snapshot will be created.
"name": the snapshot name.
"""
vm_name = params["vm_name"]
name = params["name"]
cb("building snapshot XML")
root_elem = E.domainsnapshot()
root_elem.append(E.name(name))
xml = ET.tostring(root_elem, encoding="utf-8")
try:
cb("fetching snapshot domain")
vir_dom = VMModel.get_vm(vm_name, self.conn)
cb("creating snapshot")
vir_dom.snapshotCreateXML(xml, 0)
except (NotFoundError, OperationFailed, libvirt.libvirtError), e:
raise OperationFailed("KCHSNAP0002E", {"name": name, "vm": vm_name, "err": e.message})
cb("OK", True)
