def get_lvm_info(backup_opt_dict):
"""
Take a file system path as argument as backup_opt_dict.path_to_backup
and return a dictionary containing dictionary['lvm_srcvol']
and dictionary['lvm_volgroup'] where the path is mounted on.
:param backup_opt_dict: backup_opt_dict.path_to_backup, the file system
path
:returns: the dictionary backup_opt_dict containing keys lvm_srcvol
and lvm_volgroup with respective values
"""
mount_point_path = get_mount_from_path(backup_opt_dict.lvm_auto_snap)
with open('/proc/mounts', 'r') as mount_fd:
mount_points = mount_fd.readlines()
for mount_line in mount_points:
device, mount_path = mount_line.split(' ')[0:2]
if mount_point_path.strip() == mount_path.strip():
mount_match = re.search(
r'/dev/mapper/(\w.+?\w)-(\w.+?\w)$', device)
if mount_match:
backup_opt_dict.__dict__['lvm_volgroup'] = \
mount_match.group(1).replace('--', '-')
lvm_srcvol = mount_match.group(2).replace('--', '-')
backup_opt_dict.__dict__['lvm_srcvol'] = \
u'/dev/{0}/{1}'.format(
backup_opt_dict.lvm_volgroup, lvm_srcvol)
return backup_opt_dict
raise Exception("Cannot find {0} in {1}".format(
mount_point_path, mount_points))
def get_lvm_info(backup_opt_dict):
"""
Take a file system path as argument as backup_opt_dict.src_file
and return a dictionary containing dictionary['lvm_srcvol']
and dictionary['lvm_volgroup'] where the path is mounted on.
:param backup_opt_dict: backup_opt_dict.src_file, the file system path
:returns: the dictionary backup_opt_dict containing keys lvm_srcvol
and lvm_volgroup with respective values
"""
mount_point_path = get_mount_from_path(backup_opt_dict.lvm_auto_snap)
with open('/proc/mounts', 'r') as mount_fd:
mount_points = mount_fd.readlines()
for mount_line in mount_points:
device, mount_path = mount_line.split(' ')[0:2]
if mount_point_path.strip() == mount_path.strip():
mount_match = re.search(
r'/dev/mapper/(\w.+?\w)-(\w.+?\w)$', device)
if mount_match:
backup_opt_dict.__dict__['lvm_volgroup'] = \
mount_match.group(1).replace('--', '-')
lvm_srcvol = mount_match.group(2).replace('--', '-')
backup_opt_dict.__dict__['lvm_srcvol'] = \
u'/dev/{0}/{1}'.format(
backup_opt_dict.lvm_volgroup, lvm_srcvol)
break
return backup_opt_dict
def get_lvm_info(lvm_auto_snap):
"""
Take a file system path as argument as backup_opt_dict.path_to_backup
and return a list containing lvm_srcvol, lvm_volgroup
where the path is mounted on.
:param lvm_auto_snap: the original file system path where backup needs
to be executed
:returns: a list containing the items lvm_volgroup, lvm_srcvol, lvm_device
"""
mount_point_path = get_mount_from_path(lvm_auto_snap)
with open("/proc/mounts", "r") as mount_fd:
mount_points = mount_fd.readlines()
lvm_volgroup, lvm_srcvol, lvm_device = lvm_guess(mount_point_path, mount_points, "/proc/mounts")
if not lvm_device:
mount_process = subprocess.Popen(["mount"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=os.environ)
mount_out, mount_err = mount_process.communicate()
mount_points = mount_out.split("\n")
lvm_volgroup, lvm_srcvol, lvm_device = lvm_guess(mount_point_path, mount_points, "mount")
if not lvm_device:
raise Exception(
"Cannot find {0} in {1}, please provide volume group and "
"volume name explicitly".format(mount_point_path, mount_points)
)
return lvm_volgroup, lvm_srcvol, lvm_device
def get_lvm_info(lvm_auto_snap):
"""
Take a file system path as argument as backup_opt_dict.path_to_backup
and return a list containing lvm_srcvol, lvm_volgroup
where the path is mounted on.
:param lvm_auto_snap: the original file system path where backup needs
to be executed
:returns: a dict containing the keys 'volgroup', 'srcvol' and 'snap_path'
"""
mount_point_path, snap_path = utils.get_mount_from_path(lvm_auto_snap)
with open('/proc/mounts', 'r') as mount_fd:
mount_points = mount_fd.readlines()
lvm_volgroup, lvm_srcvol, lvm_device = lvm_guess(
mount_point_path, mount_points, '/proc/mounts')
if not lvm_device:
mount_process = subprocess.Popen(
['mount'], stdout=subprocess.PIPE, stderr=subprocess.PIPE,
env=os.environ)
mount_out, mount_err = mount_process.communicate()
mount_points = mount_out.split('\n')
lvm_volgroup, lvm_srcvol, lvm_device = lvm_guess(
mount_point_path, mount_points, 'mount')
if not lvm_device:
raise Exception(
'Cannot find {0} in {1}, please provide volume group and '
'volume name explicitly'.format(mount_point_path, mount_points))
lvm_params = {'volgroup': lvm_volgroup,
'srcvol': lvm_device,
'snap_path': snap_path}
return lvm_params
def test_get_mount_from_path(self):
dir1 = '/tmp'
dir2 = '/tmp/nonexistentpathasdf'
assert type(utils.get_mount_from_path(dir1)[0]) is str
assert type(utils.get_mount_from_path(dir1)[1]) is str
self.assertRaises(Exception, utils.get_mount_from_path, dir2)
def test_get_mount_from_path(self):
dir1 = '/tmp'
dir2 = '/tmp/nonexistentpathasdf'
assert type(get_mount_from_path(dir1)) is str
pytest.raises(Exception, get_mount_from_path, dir2)
