def volume_path(self, with_no_wait=False):
"""
Return the device path pf a volume which is the actual
location of the device such as /dev/scinia, or
dev/scinix.
:param with_no_wait: Whether wait for the volume occures in host
device list
:return: Device path of volume
"""
if self.full_device_path and os.path.exists(self.full_device_path):
return self.full_device_path
tries = 1
disk_device = ''
if with_no_wait:
disk_device = self._find_volume_device(LOCAL_DEVICES_PATH)
if disk_device:
LOG.debug('Found ScaleIO device path %s', disk_device)
return os.path.join(LOCAL_DEVICES_PATH, disk_device)
else:
LOG.debug('No ScaleIO device path for volume %s', self.id)
return None
while not disk_device and tries <= MAX_HOST_DEVICE_RENEWAL_CHECKS:
disk_device = self._find_volume_device(LOCAL_DEVICES_PATH)
if not disk_device:
tries += 1
time.sleep(HOST_DEVICE_RENEWAL_CHECK_INTERVAL)
if not disk_device:
LOG.warn('Could not find ScaleIO device path for volume %s',
self.id)
raise exceptions.VolumeNotMapped(
"Device path is not found for volume '%s'" % self.id)
LOG.debug('Found ScaleIO device path %s', disk_device)
self.full_device_path = os.path.join(LOCAL_DEVICES_PATH, disk_device)
return self.full_device_path
def _unmap_volume(self, volume_id, sdc_guid=None, unmap_all=False):
"""
Private method unmaps a volume from one or all SDCs.
:param volume_id: ScaleIO volume ID
:param sdc_guid: Unique SDC identifier
:param unmap_all: True, unmap from all SDCs, False only unmap from
local SDC
:return: Nothing
"""
if not unmap_all:
if not sdc_guid:
raise ValueError(
'sdc_guid must be specified or unmap_all must be True')
else:
LOG.debug('Using ScaleIO SDC client GUID %s for '
'unmap operation.' % sdc_guid)
if unmap_all: # unmap from all sdcs
params = {'allSdcs': ''}
else: # only unmap from local sdc
params = {'guid': sdc_guid}
r_uri = '/api/instances/Volume::' + \
volume_id + '/action/removeMappedSdc'
req = self._post(r_uri, params=params)
if req.status_code == 200: # success
LOG.debug('Unmapped volume %s successfully', volume_id)
elif req.json().get('errorCode') == VOLUME_NOT_MAPPED_ERROR:
LOG.warn('Volume %s cannot be unmapped: %s',
volume_id, req.json().get('message'))
raise exceptions.VolumeNotMapped("Volume '%s' is not mapped"
% volume_id)
else:
raise exceptions.Error("Error unmapping volume '%s': %s"
% (volume_id, req.json().get('message')))