openstack/manila
Code Issues Proposed changes

HPE3PAR: Handle exceptions on deleted shares

Browse Source 
Fix to ensure that an attempt to delete a manila share will not
fail because the 3PAR filestore does not exist. When the filestore
does not exist, that means the share is already gone (or never was
created). Avoid the delete and all filestore use in this case to
prevent failures during delete.

Also catch and log exceptions during the post-delete cleanup.

Change-Id: I0e477d3dae5706547354bd029b40e3308349fabb
Closes-Bug: #1597940
This commit is contained in:
mark.sturdevant 2016-06-30 16:04:44 -07:00 committed by Mark Sturdevant
parent e50114897c
commit 6f506a8705
4 changed files with 141 additions and 142 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
manila/share/drivers/hpe/hpe_3par_mediator.py
View File

@ -662,24 +662,35 @@ class HPE3ParMediator(object):
if fstore:
self._delete_share(share_name_ro, protocol, fpg, vfs, fstore)
if not self.hpe3par_fstore_per_share:
# Attempt to remove file tree on delete when using nested shares.
# If the file tree cannot be removed for whatever reason, we will
# not treat this as an error_deleting issue. We will allow the
# delete to continue as requested.
self._delete_file_tree(share_name, protocol, fpg, vfs, fstore)
if fstore:
# reduce the fsquota by share size when a share is deleted.
self._update_capacity_quotas(fstore, 0, share_size, fpg, vfs)
if fstore == share_name:
try:
self._client.removefstore(vfs, fstore, fpg=fpg)
except Exception as e:
msg = (_('Failed to remove fstore %(fstore)s: %(e)s') %
{'fstore': fstore, 'e': six.text_type(e)})
LOG.exception(msg)
raise exception.ShareBackendException(msg=msg)
if fstore == share_name:
try:
self._client.removefstore(vfs, fstore, fpg=fpg)
except Exception as e:
msg = (_('Failed to remove fstore %(fstore)s: %(e)s') %
{'fstore': fstore, 'e': six.text_type(e)})
LOG.exception(msg)
raise exception.ShareBackendException(msg=msg)
else:
try:
# Attempt to remove file tree on delete when using nested
# shares. If the file tree cannot be removed for whatever
# reason, we will not treat this as an error_deleting
# issue. We will allow the delete to continue as requested.
self._delete_file_tree(
share_name, protocol, fpg, vfs, fstore)
# reduce the fsquota by share size when a tree is deleted.
self._update_capacity_quotas(
fstore, 0, share_size, fpg, vfs)
except Exception as e:
msg = _LW('Exception during cleanup of deleted '
'share %(share)s in filestore %(fstore)s: %(e)s')
data = {
'fstore': fstore,
'share': share_name,
'e': six.text_type(e),
}
LOG.warning(msg, data)
def _delete_file_tree(self, share_name, protocol, fpg, vfs, fstore):
# If the share protocol is CIFS, we need to make sure the admin

2
manila/tests/share/drivers/hpe/test_hpe_3par_constants.py
View File

@ -40,7 +40,9 @@ EXPECTED_VLAN_TYPE = 'vlan'
EXPECTED_VLAN_TAG = '101'
EXPECTED_SERVER_ID = '1a1a1a1a-2b2b-3c3c-4d4d-5e5e5e5e5e5e'
EXPECTED_PROJECT_ID = 'osf-nfs-project-id'
SHARE_ID = 'share-id'
EXPECTED_SHARE_ID = 'osf-share-id'
EXPECTED_SHARE_ID_RO = 'osf-ro-share-id'
EXPECTED_SHARE_NAME = 'share-name'
EXPECTED_HOST = 'hostname@backend#pool'
EXPECTED_SHARE_PATH = '/anyfpg/anyvfs/anyfstore'

233
manila/tests/share/drivers/hpe/test_hpe_3par_mediator.py
View File

@ -599,21 +599,8 @@ class HPE3ParMediatorTestCase(test.TestCase):
self.mock_object(self.mediator,
'_find_fstore',
mock.Mock(return_value=fstore))
self.mock_object(self.mediator,
'_create_mount_directory',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_mount_super_share',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_delete_share_directory',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_unmount_super_share',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_update_capacity_quotas',
mock.Mock(return_value={}))
self.mock_object(self.mediator, '_delete_file_tree')
self.mock_object(self.mediator, '_update_capacity_quotas')
self.mediator.delete_share(constants.EXPECTED_PROJECT_ID,
share_id,
@ -633,35 +620,14 @@ class HPE3ParMediatorTestCase(test.TestCase):
osf_ro_share_id,
fpg=constants.EXPECTED_FPG,
fstore=fstore),
mock.call.createfshare(constants.NFS_LOWER,
constants.EXPECTED_VFS,
constants.EXPECTED_SUPER_SHARE,
clientip=None,
comment=(
constants.EXPECTED_SUPER_SHARE_COMMENT),
fpg=constants.EXPECTED_FPG,
fstore=fstore,
options='rw,no_root_squash,insecure',
sharedir=''),
mock.call.removefstore(constants.EXPECTED_VFS,
fstore,
fpg=constants.EXPECTED_FPG),
]
self.mock_client.assert_has_calls(expected_calls)
expected_mount_path = constants.EXPECTED_MOUNT_PATH + osf_share_id
self.mediator._create_mount_directory.assert_called_with(
expected_mount_path)
self.mediator._mount_super_share.assert_called_with(
constants.NFS_LOWER, expected_mount_path, constants.EXPECTED_FPG,
constants.EXPECTED_VFS, fstore)
self.mediator._delete_share_directory.assert_called_with(
expected_mount_path)
self.mediator._unmount_super_share.assert_called_with(
expected_mount_path)
self.mediator._update_capacity_quotas.assert_called_with(
fstore, 0, constants.EXPECTED_SIZE_1,
constants.EXPECTED_FPG, constants.EXPECTED_VFS)
self.assertFalse(self.mediator._delete_file_tree.called)
self.assertFalse(self.mediator._update_capacity_quotas.called)
def test_mediator_delete_share_not_found(self):
self.init_mediator()
@ -669,18 +635,8 @@ class HPE3ParMediatorTestCase(test.TestCase):
self.mock_object(self.mediator,
'_find_fstore',
mock.Mock(return_value=None))
self.mock_object(self.mediator,
'_create_mount_directory',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_mount_super_share',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_delete_share_directory',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_unmount_super_share',
mock.Mock(return_value={}))
self.mock_object(self.mediator, '_delete_file_tree')
self.mock_object(self.mediator, '_update_capacity_quotas')
self.mediator.delete_share(constants.EXPECTED_PROJECT_ID,
constants.EXPECTED_SHARE_ID,
@ -691,17 +647,8 @@ class HPE3ParMediatorTestCase(test.TestCase):
self.assertFalse(self.mock_client.removefshare.called)
expected_mount_path = constants.EXPECTED_MOUNT_PATH + (
constants.EXPECTED_SHARE_ID)
self.mediator._create_mount_directory.assert_called_with(
expected_mount_path)
self.mediator._mount_super_share.assert_called_with(
constants.SMB_LOWER, expected_mount_path, constants.EXPECTED_FPG,
constants.EXPECTED_VFS, None)
self.mediator._delete_share_directory.assert_called_with(
expected_mount_path)
self.mediator._unmount_super_share.assert_called_with(
expected_mount_path)
self.assertFalse(self.mediator._delete_file_tree.called)
self.assertFalse(self.mediator._update_capacity_quotas.called)
def test_mediator_delete_nfs_share_only_readonly(self):
self.init_mediator()
@ -779,28 +726,15 @@ class HPE3ParMediatorTestCase(test.TestCase):
self.mock_object(self.mediator,
'_find_fstore',
mock.Mock(return_value=constants.EXPECTED_SHARE_ID))
self.mock_object(self.mediator,
'_create_mount_directory',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_mount_super_share',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_delete_share_directory',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_unmount_super_share',
mock.Mock(return_value={}))
self.mock_object(self.mediator,
'_update_capacity_quotas',
mock.Mock(return_value={}))
self.mock_object(self.mediator, '_delete_file_tree')
self.mock_object(self.mediator, '_update_capacity_quotas')
self.mock_client.removefstore.side_effect = Exception(
'removefstore fail.')
self.assertRaises(exception.ShareBackendException,
self.mediator.delete_share,
constants.EXPECTED_PROJECT_ID,
constants.EXPECTED_SHARE_ID,
constants.SHARE_ID,
constants.EXPECTED_SIZE_1,
constants.CIFS,
constants.EXPECTED_FPG,
@ -812,51 +746,62 @@ class HPE3ParMediatorTestCase(test.TestCase):
constants.EXPECTED_SHARE_ID,
fpg=constants.EXPECTED_FPG,
fstore=constants.EXPECTED_SHARE_ID),
mock.call.createfshare(constants.SMB_LOWER,
mock.call.removefshare(constants.SMB_LOWER,
constants.EXPECTED_VFS,
constants.EXPECTED_SUPER_SHARE,
allowip=None,
comment=(
constants.EXPECTED_SUPER_SHARE_COMMENT),
constants.EXPECTED_SHARE_ID_RO,
fpg=constants.EXPECTED_FPG,
fstore=constants.EXPECTED_SHARE_ID,
sharedir=''),
mock.call.setfshare(constants.SMB_LOWER,
constants.EXPECTED_VFS,
constants.EXPECTED_SUPER_SHARE,
comment=(
constants.EXPECTED_SUPER_SHARE_COMMENT),
allowperm=(
'+' + constants.USERNAME + ':fullcontrol'),
fpg=constants.EXPECTED_FPG,
fstore=constants.EXPECTED_SHARE_ID),
fstore=constants.EXPECTED_SHARE_ID),
mock.call.removefstore(constants.EXPECTED_VFS,
constants.EXPECTED_SHARE_ID,
fpg=constants.EXPECTED_FPG),
]
self.mock_client.assert_has_calls(expected_calls)
expected_mount_path = constants.EXPECTED_MOUNT_PATH + (
constants.EXPECTED_SHARE_ID)
self.mediator._create_mount_directory.assert_called_with(
expected_mount_path)
self.mediator._mount_super_share.assert_called_with(
constants.SMB_LOWER, expected_mount_path, constants.EXPECTED_FPG,
constants.EXPECTED_VFS, constants.EXPECTED_SHARE_ID)
self.mediator._delete_share_directory.assert_called_with(
expected_mount_path)
self.mediator._unmount_super_share.assert_called_with(
expected_mount_path)
self.mediator._update_capacity_quotas.assert_called_with(
constants.EXPECTED_SHARE_ID, 0, constants.EXPECTED_SIZE_1,
constants.EXPECTED_FPG, constants.EXPECTED_VFS)
self.assertFalse(self.mediator._delete_file_tree.called)
self.assertFalse(self.mediator._update_capacity_quotas.called)
def test_mediator_delete_file_tree_exception(self):
self.init_mediator()
mock_log = self.mock_object(hpe3parmediator, 'LOG')
self.mock_object(self.mediator,
'_find_fstore',
mock.Mock(return_value=constants.EXPECTED_FSTORE))
self.mock_object(self.mediator,
'_delete_file_tree',
mock.Mock(side_effect=Exception('test')))
self.mock_object(self.mediator, '_update_capacity_quotas')
self.mediator.delete_share(constants.EXPECTED_PROJECT_ID,
constants.SHARE_ID,
constants.EXPECTED_SIZE_1,
constants.CIFS,
constants.EXPECTED_FPG,
constants.EXPECTED_VFS)
expected_calls = [
mock.call.removefshare(constants.SMB_LOWER,
constants.EXPECTED_VFS,
constants.EXPECTED_SHARE_ID,
fpg=constants.EXPECTED_FPG,
fstore=constants.EXPECTED_FSTORE),
mock.call.removefshare(constants.SMB_LOWER,
constants.EXPECTED_VFS,
constants.EXPECTED_SHARE_ID_RO,
fpg=constants.EXPECTED_FPG,
fstore=constants.EXPECTED_FSTORE),
]
self.mock_client.assert_has_calls(expected_calls)
self.assertTrue(self.mediator._delete_file_tree.called)
self.assertFalse(self.mediator._update_capacity_quotas.called)
mock_log.warning.assert_called_once_with(mock.ANY, mock.ANY)
def test_mediator_delete_cifs_share(self):
self.init_mediator()
self.mock_object(self.mediator,
'_find_fstore',
mock.Mock(return_value=constants.EXPECTED_SHARE_ID))
mock.Mock(return_value=constants.EXPECTED_FSTORE))
self.mock_object(self.mediator,
'_create_mount_directory',
mock.Mock(return_value={}))
@ -885,7 +830,7 @@ class HPE3ParMediatorTestCase(test.TestCase):
constants.EXPECTED_VFS,
constants.EXPECTED_SHARE_ID,
fpg=constants.EXPECTED_FPG,
fstore=constants.EXPECTED_SHARE_ID),
fstore=constants.EXPECTED_FSTORE),
mock.call.createfshare(constants.SMB_LOWER,
constants.EXPECTED_VFS,
constants.EXPECTED_SUPER_SHARE,
@ -893,7 +838,7 @@ class HPE3ParMediatorTestCase(test.TestCase):
comment=(
constants.EXPECTED_SUPER_SHARE_COMMENT),
fpg=constants.EXPECTED_FPG,
fstore=constants.EXPECTED_SHARE_ID,
fstore=constants.EXPECTED_FSTORE,
sharedir=''),
mock.call.setfshare(constants.SMB_LOWER,
constants.EXPECTED_VFS,
@ -903,27 +848,65 @@ class HPE3ParMediatorTestCase(test.TestCase):
allowperm=(
'+' + constants.USERNAME + ':fullcontrol'),
fpg=constants.EXPECTED_FPG,
fstore=constants.EXPECTED_SHARE_ID),
fstore=constants.EXPECTED_FSTORE),
]
self.mock_client.assert_has_calls(expected_calls)
expected_mount_path = constants.EXPECTED_MOUNT_PATH + (
constants.EXPECTED_SHARE_ID)
expected_share_path = '/'.join((expected_mount_path,
constants.EXPECTED_SHARE_ID))
self.mediator._create_mount_directory.assert_called_once_with(
expected_mount_path)
self.mediator._mount_super_share.assert_called_once_with(
constants.SMB_LOWER,
expected_mount_path,
constants.EXPECTED_FPG,
constants.EXPECTED_VFS,
constants.EXPECTED_FSTORE)
self.mediator._delete_share_directory.assert_has_calls([
mock.call(expected_share_path),
mock.call(expected_mount_path),
])
self.mediator._unmount_super_share.assert_called_once_with(
expected_mount_path)
self.mediator._update_capacity_quotas.assert_called_once_with(
constants.EXPECTED_FSTORE,
0,
constants.EXPECTED_SIZE_1,
constants.EXPECTED_FPG,
constants.EXPECTED_VFS)
def test_mediator_delete_cifs_share_and_fstore(self):
self.init_mediator()
self.mock_object(self.mediator,
'_find_fstore',
mock.Mock(return_value=constants.EXPECTED_SHARE_ID))
self.mock_object(self.mediator, '_delete_file_tree')
self.mock_object(self.mediator, '_update_capacity_quotas')
self.mediator.delete_share(constants.EXPECTED_PROJECT_ID,
constants.EXPECTED_SHARE_ID,
constants.EXPECTED_SIZE_1,
constants.CIFS,
constants.EXPECTED_FPG,
constants.EXPECTED_VFS)
expected_calls = [
mock.call.removefshare(constants.SMB_LOWER,
constants.EXPECTED_VFS,
constants.EXPECTED_SHARE_ID,
fpg=constants.EXPECTED_FPG,
fstore=constants.EXPECTED_SHARE_ID),
mock.call.removefstore(constants.EXPECTED_VFS,
constants.EXPECTED_SHARE_ID,
fpg=constants.EXPECTED_FPG),
]
self.mock_client.assert_has_calls(expected_calls)
expected_mount_path = constants.EXPECTED_MOUNT_PATH + (
constants.EXPECTED_SHARE_ID)
self.mediator._create_mount_directory.assert_called_with(
expected_mount_path)
self.mediator._mount_super_share.assert_called_with(
constants.SMB_LOWER, expected_mount_path, constants.EXPECTED_FPG,
constants.EXPECTED_VFS, constants.EXPECTED_SHARE_ID)
self.mediator._delete_share_directory.assert_called_with(
expected_mount_path)
self.mediator._unmount_super_share.assert_called_with(
expected_mount_path)
self.mediator._update_capacity_quotas.assert_called_with(
constants.EXPECTED_SHARE_ID, 0, constants.EXPECTED_SIZE_1,
constants.EXPECTED_FPG, constants.EXPECTED_VFS)
self.assertFalse(self.mediator._delete_file_tree.called)
self.assertFalse(self.mediator._update_capacity_quotas.called)
def test_mediator_delete_share_with_fstore_per_share_false(self):
self.init_mediator()

3
releasenotes/notes/bug-1597940-fix-hpe3par-delete-share-0daf75193f318c41.yaml Normal file
View File

@ -0,0 +1,3 @@
---
fixes:
- HPE3PAR driver fix to allow delete of a share that does not exist on the backend.