openstack/cinder
Code Issues Proposed changes

PureISCSIDriver:Handle delete called on already deleted volume

Browse Source 
If the delete_volume method gets an error from Purity
saying volume does not exist, don't proceed with attempt
at deletion

Change-Id: I2a830e43c876433da4cdb50eabe4fb66b7eb6faf
Closes-Bug: #1395826
This commit is contained in:
Mudassir Latif 2014-11-24 19:00:47 -08:00
parent e629d1a5ca
commit 0d47799bea
2 changed files with 26 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
cinder/tests/test_pure.py
View File

@ -199,6 +199,24 @@ class PureISCSIDriverTestCase(test.TestCase):
self.driver.create_cloned_volume, VOLUME, SRC_VOL)
SRC_VOL["size"] = 2 # reset size
def test_delete_volume_already_deleted(self):
self.array.list_volume_hosts.side_effect = exception.PureAPIException(
code=400, reason="Volume does not exist")
self.driver.delete_volume(VOLUME)
self.assertFalse(self.array.destroy_volume.called)
self.array.list_volume_hosts.side_effect = None
self.assert_error_propagates([self.array.destroy_volume],
self.driver.delete_volume, VOLUME)
# Testing case where array.destroy_volume returns an exception
# because volume already deleted
self.array.destroy_volume.side_effect = exception.PureAPIException(
code=400, reason="Volume does not exist")
self.driver.delete_volume(VOLUME)
self.assertTrue(self.array.destroy_volume.called)
self.array.destroy_volume.side_effect = None
self.assert_error_propagates([self.array.destroy_volume],
self.driver.delete_volume, VOLUME)
def test_delete_volume(self):
vol_name = VOLUME["name"] + "-cinder"
self.driver.delete_volume(VOLUME)

17
cinder/volume/drivers/pure.py
View File

@ -133,21 +133,20 @@ class PureISCSIDriver(san.SanISCSIDriver):
"""Disconnect all hosts and delete the volume"""
LOG.debug("Enter PureISCSIDriver.delete_volume.")
vol_name = _get_vol_name(volume)
connected_hosts = self._array.list_volume_hosts(vol_name)
for host_info in connected_hosts:
host_name = host_info["host"]
self._disconnect_host(host_name, vol_name)
try:
connected_hosts = self._array.list_volume_hosts(vol_name)
for host_info in connected_hosts:
host_name = host_info["host"]
self._disconnect_host(host_name, vol_name)
self._array.destroy_volume(vol_name)
except exception.PureAPIException as err:
with excutils.save_and_reraise_exception() as ctxt:
if err.kwargs["code"] == 400:
if err.kwargs["code"] == 400 and \
"Volume does not exist" in err.msg:
# Happens if the volume does not exist.
ctxt.reraise = False
LOG.error(_LE("Volume deletion failed with message: %s") %
err.msg)
LOG.warn(_LW("Volume deletion failed with message: %s")
% err.msg)
LOG.debug("Leave PureISCSIDriver.delete_volume.")
def create_snapshot(self, snapshot):