def _ensure_volume_available(vol_id, force_detach=False):
conn = EBSVol._ec2()
vol = EBSVol.get_volume(vol_id)
if vol is None:
raise Exception("Volume not found: " + vol_id)
if CompEC2._state_check(vol, 'available'):
return True
# volume may be attached
instance_id = CompEC2.get_instance_id()
att_instance_id, att_device = EBSVol._get_volume_attach_info(vol_id)
if (att_instance_id is None) or (att_instance_id == instance_id):
return True
if force_detach:
EBSVol.log_warn("Forcing detach of volume %s", vol_id)
conn.detach_volume(vol_id)
CompEC2._wait_for_status(vol, 'available')
if not CompEC2._state_check(vol, 'available'):
raise Exception("Volume not available: " + vol_id +
", attached to: " + att_instance_id +
", state: " + vol.status)
def _ensure_volume_available(vol_id, force_detach=False):
conn = EBSVol._ec2()
vol = EBSVol.get_volume(vol_id)
if vol is None:
raise Exception("Volume not found: " + vol_id)
if CompEC2._state_check(vol, 'available'):
return True
# volume may be attached
instance_id = CompEC2.get_instance_id()
att_instance_id, att_device = EBSVol._get_volume_attach_info(vol_id)
if (att_instance_id is None) or (att_instance_id == instance_id):
return True
if force_detach:
EBSVol.log_warn("Forcing detach of volume %s", vol_id)
conn.detach_volume(vol_id)
CompEC2._wait_for_status(vol, 'available')
if not CompEC2._state_check(vol, 'available'):
raise Exception("Volume not available: " + vol_id +
", attached to: " + att_instance_id + ", state: " +
vol.status)
def get_mapped_volumes(instance_id=None):
if instance_id is None:
instance_id = CompEC2.get_instance_id()
return EBSVol._ec2().get_instance_attribute(
instance_id=instance_id,
attribute='blockDeviceMapping')['blockDeviceMapping']
def _attach_free_volume(vol_id, dev_id):
conn = EBSVol._ec2()
instance_id = CompEC2.get_instance_id()
device = os.path.join('/dev', dev_id)
vol = EBSVol.get_volume(vol_id)
EBSVol.log_info("Attaching volume %s at %s", vol_id, device)
t1 = time.time()
conn.attach_volume(vol_id, instance_id, device)
if not CompEC2._wait_for_status(vol, 'in-use'):
EBSVol.log_error("Could not attach volume %s", vol_id)
raise Exception("Volume could not be attached. Volume id: " + vol_id)
if not EBSVol._wait_for_device(device):
EBSVol.log_error("Could not attach volume %s to device %s", vol_id, device)
raise Exception("Volume could not be attached. Volume id: " + vol_id + ", device: " + device)
tdiff = int(time.time() - t1)
CompEC2.publish_stats("EBSAttachTime", "Count", tdiff)
return device
def _attach_free_volume(vol_id, dev_id):
conn = EBSVol._ec2()
instance_id = CompEC2.get_instance_id()
device = os.path.join('/dev', dev_id)
vol = EBSVol.get_volume(vol_id)
EBSVol.log_info("Attaching volume %s at %s", vol_id, device)
t1 = time.time()
conn.attach_volume(vol_id, instance_id, device)
if not CompEC2._wait_for_status(vol, 'in-use'):
EBSVol.log_error("Could not attach volume %s", vol_id)
raise Exception("Volume could not be attached. Volume id: " +
vol_id)
if not EBSVol._wait_for_device(device):
EBSVol.log_error("Could not attach volume %s to device %s", vol_id,
device)
raise Exception("Volume could not be attached. Volume id: " +
vol_id + ", device: " + device)
tdiff = int(time.time() - t1)
CompEC2.publish_stats("EBSAttachTime", "Count", tdiff)
return device
def get_mapped_volumes(instance_id=None):
if instance_id is None:
instance_id = CompEC2.get_instance_id()
return EBSVol._ec2().get_instance_attribute(instance_id=instance_id,
attribute='blockDeviceMapping')['blockDeviceMapping']
