openstack/os-brick
Code Issues Proposed changes

Merge "Make close on cryptsetup volumes idempotent"

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This commit is contained in:
Zuul 2017-11-29 20:57:04 +00:00 committed by Gerrit Code Review
commit a5c60d94d8
2 changed files with 8 additions and 6 deletions
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10
os_brick/encryptors/cryptsetup.py
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@ -169,11 +169,13 @@ class CryptsetupEncryptor(base.VolumeEncryptor):
def _close_volume(self, **kwargs):
"""Closes the device (effectively removes the dm-crypt mapping)."""
LOG.debug("closing encrypted volume %s", self.dev_path)
# cryptsetup returns 4 when attempting to destroy a non-active
# dm-crypt device. We are going to ignore this error code to make
# nova deleting that instance successfully.
# NOTE(mdbooth): remove will return 4 (wrong device specified) if
# the device doesn't exist. We assume here that the caller hasn't
# specified the wrong device, and that it doesn't exist because it
# isn't open. We don't fail in this case in order to make this
# operation idempotent.
self._execute('cryptsetup', 'remove', self.dev_name,
run_as_root=True, check_exit_code=True,
run_as_root=True, check_exit_code=[0, 4],
root_helper=self._root_helper)
def detach_volume(self, **kwargs):

4
os_brick/tests/encryptors/test_cryptsetup.py
View File

@ -88,7 +88,7 @@ class CryptsetupEncryptorTestCase(test_base.VolumeEncryptorTestCase):
mock_execute.assert_has_calls([
mock.call('cryptsetup', 'remove', self.dev_name,
root_helper=self.root_helper,
run_as_root=True, check_exit_code=True),
run_as_root=True, check_exit_code=[0, 4]),
])
@mock.patch('os_brick.executor.Executor._execute')
@ -98,7 +98,7 @@ class CryptsetupEncryptorTestCase(test_base.VolumeEncryptorTestCase):
mock_execute.assert_has_calls([
mock.call('cryptsetup', 'remove', self.dev_name,
root_helper=self.root_helper,
run_as_root=True, check_exit_code=True),
run_as_root=True, check_exit_code=[0, 4]),
])
def test_init_volume_encryption_not_supported(self):