355 lines
12 KiB
Python
355 lines
12 KiB
Python
# Copyright 2013 IBM Corp
|
|
# All Rights Reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
#
|
|
"""
|
|
Tests for volume backup to IBM Tivoli Storage Manager (TSM).
|
|
"""
|
|
|
|
import datetime
|
|
import json
|
|
import os
|
|
import posix
|
|
|
|
from oslo_concurrency import processutils as putils
|
|
|
|
from cinder.backup.drivers import tsm
|
|
from cinder import context
|
|
from cinder import db
|
|
from cinder import exception
|
|
from cinder.openstack.common import log as logging
|
|
from cinder import test
|
|
from cinder import utils
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
SIM = None
|
|
VOLUME_PATH = '/dev/null'
|
|
|
|
|
|
class TSMBackupSimulator:
|
|
"""Simulates TSM dsmc command.
|
|
|
|
The simulator simulates the execution of the 'dsmc' command.
|
|
This allows the TSM backup test to succeed even if TSM is not installed.
|
|
"""
|
|
def __init__(self):
|
|
self._backup_list = {}
|
|
self._hardlinks = []
|
|
self._next_cmd_error = {
|
|
'backup': '',
|
|
}
|
|
self._intro_msg = ('IBM Tivoli Storage Manager\n'
|
|
'Command Line Backup-Archive Client Interface\n'
|
|
'...\n\n')
|
|
|
|
def _cmd_backup(self, **kwargs):
|
|
# simulates the execution of the dsmc backup command
|
|
ret_msg = self._intro_msg
|
|
path = kwargs['path']
|
|
|
|
ret_msg += ('Image backup of volume \'%s\'\n\n'
|
|
'Total number of objects inspected: 1\n'
|
|
% path)
|
|
|
|
if self._next_cmd_error['backup'] == 'fail':
|
|
ret_msg += ('ANS1228E Sending of object \'%s\' '
|
|
'failed\n' % path)
|
|
ret_msg += ('ANS1063E The specified path is not a valid file '
|
|
'system or logical volume name.')
|
|
self._next_cmd_error['backup'] = ''
|
|
retcode = 12
|
|
else:
|
|
ret_msg += 'Total number of objects backed up: 1'
|
|
if path not in self._backup_list:
|
|
self._backup_list[path] = []
|
|
else:
|
|
self._backup_list[path][-1]['active'] = False
|
|
date = datetime.datetime.now()
|
|
datestr = date.strftime("%m/%d/%Y %H:%M:%S")
|
|
self._backup_list[path].append({'date': datestr, 'active': True})
|
|
retcode = 0
|
|
|
|
return (ret_msg, '', retcode)
|
|
|
|
def _backup_exists(self, path):
|
|
if path not in self._backup_list:
|
|
return ('ANS4000E Error processing \'%s\': file space does '
|
|
'not exist.' % path)
|
|
|
|
return 'OK'
|
|
|
|
def _cmd_restore(self, **kwargs):
|
|
|
|
ret_msg = self._intro_msg
|
|
path = kwargs['path']
|
|
exists = self._backup_exists(path)
|
|
|
|
if exists == 'OK':
|
|
ret_msg += ('Total number of objects restored: 1\n'
|
|
'Total number of objects failed: 0')
|
|
retcode = 0
|
|
else:
|
|
ret_msg += exists
|
|
retcode = 12
|
|
|
|
return (ret_msg, '', retcode)
|
|
|
|
def _cmd_delete(self, **kwargs):
|
|
# simulates the execution of the dsmc delete command
|
|
ret_msg = self._intro_msg
|
|
path = kwargs['path']
|
|
exists = self._backup_exists(path)
|
|
|
|
if exists == 'OK':
|
|
ret_msg += ('Total number of objects deleted: 1\n'
|
|
'Total number of objects failed: 0')
|
|
retcode = 0
|
|
index = len(self._backup_list[path]) - 1
|
|
del self._backup_list[path][index]
|
|
if not len(self._backup_list[path]):
|
|
del self._backup_list[path]
|
|
else:
|
|
ret_msg += exists
|
|
retcode = 12
|
|
|
|
return (ret_msg, '', retcode)
|
|
|
|
def _cmd_to_dict(self, arg_list):
|
|
"""Convert command for kwargs (assumes a properly formed command)."""
|
|
ret = {'cmd': arg_list[0],
|
|
'type': arg_list[1],
|
|
'path': arg_list[-1]}
|
|
|
|
for i in range(2, len(arg_list) - 1):
|
|
arg = arg_list[i].split('=')
|
|
if len(arg) == 1:
|
|
ret[arg[0]] = True
|
|
else:
|
|
ret[arg[0]] = arg[1]
|
|
|
|
return ret
|
|
|
|
def _exec_dsmc_cmd(self, cmd):
|
|
"""Simulates the execution of the dsmc command."""
|
|
cmd_switch = {'backup': self._cmd_backup,
|
|
'restore': self._cmd_restore,
|
|
'delete': self._cmd_delete}
|
|
|
|
kwargs = self._cmd_to_dict(cmd)
|
|
if kwargs['cmd'] != 'dsmc' or kwargs['type'] not in cmd_switch:
|
|
raise putils.ProcessExecutionError(exit_code=1,
|
|
stdout='',
|
|
stderr='Not dsmc command',
|
|
cmd=' '.join(cmd))
|
|
out, err, ret = cmd_switch[kwargs['type']](**kwargs)
|
|
return (out, err, ret)
|
|
|
|
def exec_cmd(self, cmd):
|
|
"""Simulates the execution of dsmc, rm, and ln commands."""
|
|
if cmd[0] == 'dsmc':
|
|
out, err, ret = self._exec_dsmc_cmd(cmd)
|
|
elif cmd[0] == 'ln':
|
|
dest = cmd[2]
|
|
out = ''
|
|
if dest in self._hardlinks:
|
|
err = ('ln: failed to create hard link `%s\': '
|
|
'File exists' % dest)
|
|
ret = 1
|
|
else:
|
|
self._hardlinks.append(dest)
|
|
err = ''
|
|
ret = 0
|
|
elif cmd[0] == 'rm':
|
|
dest = cmd[2]
|
|
out = ''
|
|
if dest not in self._hardlinks:
|
|
err = ('rm: cannot remove `%s\': No such file or '
|
|
'directory' % dest)
|
|
ret = 1
|
|
else:
|
|
index = self._hardlinks.index(dest)
|
|
del self._hardlinks[index]
|
|
err = ''
|
|
ret = 0
|
|
else:
|
|
raise putils.ProcessExecutionError(exit_code=1,
|
|
stdout='',
|
|
stderr='Unsupported command',
|
|
cmd=' '.join(cmd))
|
|
return (out, err, ret)
|
|
|
|
def error_injection(self, cmd, error):
|
|
self._next_cmd_error[cmd] = error
|
|
|
|
|
|
def fake_exec(*cmd, **kwargs):
|
|
# Support only bool
|
|
check_exit_code = kwargs.pop('check_exit_code', True)
|
|
global SIM
|
|
|
|
out, err, ret = SIM.exec_cmd(cmd)
|
|
if ret and check_exit_code:
|
|
raise putils.ProcessExecutionError(
|
|
exit_code=-1,
|
|
stdout=out,
|
|
stderr=err,
|
|
cmd=' '.join(cmd))
|
|
return (out, err)
|
|
|
|
|
|
def fake_stat_image(path):
|
|
# Simulate stat to return the mode of a block device
|
|
# make sure that st_mode (the first in the sequence(
|
|
# matches the mode of a block device
|
|
return posix.stat_result((25008, 5753, 5L, 1, 0, 6, 0,
|
|
1375881199, 1375881197, 1375881197))
|
|
|
|
|
|
def fake_stat_file(path):
|
|
# Simulate stat to return the mode of a block device
|
|
# make sure that st_mode (the first in the sequence(
|
|
# matches the mode of a block device
|
|
return posix.stat_result((33188, 5753, 5L, 1, 0, 6, 0,
|
|
1375881199, 1375881197, 1375881197))
|
|
|
|
|
|
def fake_stat_illegal(path):
|
|
# Simulate stat to return the mode of a block device
|
|
# make sure that st_mode (the first in the sequence(
|
|
# matches the mode of a block device
|
|
return posix.stat_result((17407, 5753, 5L, 1, 0, 6, 0,
|
|
1375881199, 1375881197, 1375881197))
|
|
|
|
|
|
class BackupTSMTestCase(test.TestCase):
|
|
def setUp(self):
|
|
super(BackupTSMTestCase, self).setUp()
|
|
global SIM
|
|
SIM = TSMBackupSimulator()
|
|
self.sim = SIM
|
|
self.ctxt = context.get_admin_context()
|
|
self.driver = tsm.TSMBackupDriver(self.ctxt)
|
|
self.stubs.Set(utils, 'execute', fake_exec)
|
|
self.stubs.Set(os, 'stat', fake_stat_image)
|
|
|
|
def _create_volume_db_entry(self, volume_id):
|
|
vol = {'id': volume_id,
|
|
'size': 1,
|
|
'status': 'available'}
|
|
return db.volume_create(self.ctxt, vol)['id']
|
|
|
|
def _create_backup_db_entry(self, backup_id, mode):
|
|
if mode == 'file':
|
|
backup_path = VOLUME_PATH
|
|
else:
|
|
backup_path = '/dev/backup-%s' % backup_id
|
|
service_metadata = json.dumps({'backup_mode': mode,
|
|
'backup_path': backup_path})
|
|
backup = {'id': backup_id,
|
|
'size': 1,
|
|
'container': 'test-container',
|
|
'volume_id': '1234-5678-1234-8888',
|
|
'service_metadata': service_metadata}
|
|
return db.backup_create(self.ctxt, backup)['id']
|
|
|
|
def test_backup_image(self):
|
|
volume_id = '1234-5678-1234-7777'
|
|
mode = 'image'
|
|
self._create_volume_db_entry(volume_id)
|
|
|
|
backup_id1 = 123
|
|
backup_id2 = 456
|
|
backup_id3 = 666
|
|
self._create_backup_db_entry(backup_id1, mode)
|
|
self._create_backup_db_entry(backup_id2, mode)
|
|
self._create_backup_db_entry(backup_id3, mode)
|
|
|
|
with open(VOLUME_PATH, 'rw') as volume_file:
|
|
# Create two backups of the volume
|
|
backup1 = db.backup_get(self.ctxt, backup_id1)
|
|
self.driver.backup(backup1, volume_file)
|
|
backup2 = db.backup_get(self.ctxt, backup_id2)
|
|
self.driver.backup(backup2, volume_file)
|
|
|
|
# Create a backup that fails
|
|
fail_back = db.backup_get(self.ctxt, backup_id3)
|
|
self.sim.error_injection('backup', 'fail')
|
|
self.assertRaises(exception.InvalidBackup,
|
|
self.driver.backup, fail_back, volume_file)
|
|
|
|
# Try to restore one, then the other
|
|
self.driver.restore(backup1, volume_id, volume_file)
|
|
self.driver.restore(backup2, volume_id, volume_file)
|
|
|
|
# Delete both backups
|
|
self.driver.delete(backup2)
|
|
self.driver.delete(backup1)
|
|
|
|
def test_backup_file(self):
|
|
volume_id = '1234-5678-1234-8888'
|
|
mode = 'file'
|
|
self.stubs.Set(os, 'stat', fake_stat_file)
|
|
self._create_volume_db_entry(volume_id)
|
|
|
|
backup_id1 = 123
|
|
backup_id2 = 456
|
|
self._create_backup_db_entry(backup_id1, mode)
|
|
self._create_backup_db_entry(backup_id2, mode)
|
|
|
|
with open(VOLUME_PATH, 'rw') as volume_file:
|
|
# Create two backups of the volume
|
|
backup1 = db.backup_get(self.ctxt, 123)
|
|
self.driver.backup(backup1, volume_file)
|
|
backup2 = db.backup_get(self.ctxt, 456)
|
|
self.driver.backup(backup2, volume_file)
|
|
|
|
# Create a backup that fails
|
|
self._create_backup_db_entry(666, mode)
|
|
fail_back = db.backup_get(self.ctxt, 666)
|
|
self.sim.error_injection('backup', 'fail')
|
|
self.assertRaises(exception.InvalidBackup,
|
|
self.driver.backup, fail_back, volume_file)
|
|
|
|
# Try to restore one, then the other
|
|
self.driver.restore(backup1, volume_id, volume_file)
|
|
self.driver.restore(backup2, volume_id, volume_file)
|
|
|
|
# Delete both backups
|
|
self.driver.delete(backup1)
|
|
self.driver.delete(backup2)
|
|
|
|
def test_backup_invalid_mode(self):
|
|
volume_id = '1234-5678-1234-9999'
|
|
mode = 'illegal'
|
|
self.stubs.Set(os, 'stat', fake_stat_illegal)
|
|
self._create_volume_db_entry(volume_id)
|
|
|
|
backup_id1 = 123
|
|
self._create_backup_db_entry(backup_id1, mode)
|
|
|
|
with open(VOLUME_PATH, 'rw') as volume_file:
|
|
# Create two backups of the volume
|
|
backup1 = db.backup_get(self.ctxt, 123)
|
|
self.assertRaises(exception.InvalidBackup,
|
|
self.driver.backup, backup1, volume_file)
|
|
|
|
self.assertRaises(exception.InvalidBackup,
|
|
self.driver.restore,
|
|
backup1,
|
|
volume_id,
|
|
volume_file)
|
|
|
|
self.assertRaises(exception.InvalidBackup,
|
|
self.driver.delete, backup1)
|