def valid_disk(ceph_iscsi_config, logger, **kwargs):
"""
determine whether the given image info is valid for a disk operation
:param ceph_iscsi_config: Config object
:param logger: logger object
:param image_id: (str) <pool>.<image> format
:return: (str) either 'ok' or an error description
"""
# create can also pass optional controls dict
mode_vars = {
"create": ['pool', 'image', 'size', 'count'],
"resize": ['pool', 'image', 'size'],
"reconfigure": ['pool', 'image', 'controls'],
"delete": ['pool', 'image']
}
if 'mode' in kwargs.keys():
mode = kwargs['mode']
else:
mode = None
backstore = kwargs['backstore']
if backstore not in LUN.BACKSTORES:
return "Invalid '{}' backstore - Supported backstores: " \
"{}".format(backstore, ','.join(LUN.BACKSTORES))
if mode in mode_vars:
if not all(x in kwargs for x in mode_vars[mode]):
return ("{} request must contain the following "
"variables: ".format(mode, ','.join(mode_vars[mode])))
else:
return "disk operation mode '{}' is invalid".format(mode)
config = ceph_iscsi_config.config
disk_key = "{}.{}".format(kwargs['pool'], kwargs['image'])
if mode in ['create', 'resize']:
if kwargs['pool'] not in get_pools():
return "pool name is invalid"
if mode == 'create':
if kwargs['size'] and not valid_size(kwargs['size']):
return "Size is invalid"
if len(config['disks']) >= 256:
return "Disk limit of 256 reached."
disk_regex = re.compile(r"^[a-zA-Z0-9\-_]+$")
if not disk_regex.search(kwargs['pool']):
return "Invalid pool name (use alphanumeric, '_', or '-' characters)"
if not disk_regex.search(kwargs['image']):
return "Invalid image name (use alphanumeric, '_', or '-' characters)"
if kwargs['count'].isdigit():
if not 1 <= int(kwargs['count']) <= 10:
return "invalid count specified, must be an integer (1-10)"
else:
return "invalid count specified, must be an integer (1-10)"
if kwargs['count'] == '1':
new_disks = {disk_key}
else:
limit = int(kwargs['count']) + 1
new_disks = set(
['{}{}'.format(disk_key, ctr) for ctr in range(1, limit)])
if any(new_disk in config['disks'] for new_disk in new_disks):
return ("at least one rbd image(s) with that name/prefix is "
"already defined")
if mode in ["resize", "delete", "reconfigure"]:
# disk must exist in the config
if disk_key not in config['disks']:
return ("rbd {}/{} is not defined to the "
"configuration".format(kwargs['pool'],
kwargs['image']))
if mode == 'resize':
if not valid_size(kwargs['size']):
return "Size is invalid"
size = kwargs['size'].upper()
current_size = get_rbd_size(kwargs['pool'], kwargs['image'])
if convert_2_bytes(size) <= current_size:
return ("resize value must be larger than the "
"current size ({}/{})".format(human_size(current_size),
current_size))
if mode in ['create', 'reconfigure']:
try:
settings.Settings.normalize_controls(kwargs['controls'],
LUN.SETTINGS[backstore])
except ValueError as err:
return (err)
if mode == 'delete':
# disk must *not* be allocated to a client in the config
mapped_list = []
allocation_list = []
for target_iqn, target in config['targets'].items():
if disk_key in target['disks']:
mapped_list.append(target_iqn)
for client_iqn in target['clients']:
client_metadata = target['clients'][client_iqn]
if disk_key in client_metadata['luns']:
allocation_list.append(client_iqn)
if allocation_list:
return ("Unable to delete {}. Allocated "
"to: {}".format(disk_key, ','.join(allocation_list)))
if mapped_list:
return ("Unable to delete {}. Mapped "
"to: {}".format(disk_key, ','.join(mapped_list)))
return 'ok'
def valid_disk(ceph_iscsi_config, logger, **kwargs):
"""
determine whether the given image info is valid for a disk operation
:param ceph_iscsi_config: Config object
:param logger: logger object
:param image_id: (str) <pool>.<image> format
:return: (str) either 'ok' or an error description
"""
# create can also pass optional controls dict
mode_vars = {
"create": ['pool', 'image', 'size', 'count'],
"resize": ['pool', 'image', 'size'],
"reconfigure": ['pool', 'image', 'controls'],
"delete": ['pool', 'image']
}
if 'mode' in kwargs.keys():
mode = kwargs['mode']
else:
mode = None
if mode in mode_vars:
if not all(x in kwargs for x in mode_vars[mode]):
return ("{} request must contain the following "
"variables: ".format(mode, ','.join(mode_vars[mode])))
else:
return "disk operation mode '{}' is invalid".format(mode)
config = ceph_iscsi_config.config
disk_key = "{}.{}".format(kwargs['pool'], kwargs['image'])
if mode in ['create', 'resize']:
if not valid_size(kwargs['size']):
return "Size is invalid"
elif kwargs['pool'] not in get_pools():
return "pool name is invalid"
if mode == 'create':
if len(config['disks']) >= 256:
return "Disk limit of 256 reached."
disk_regex = re.compile(r"^[a-zA-Z0-9\-_]+$")
if not disk_regex.search(kwargs['pool']):
return "Invalid pool name (use alphanumeric, '_', or '-' characters)"
if not disk_regex.search(kwargs['image']):
return "Invalid image name (use alphanumeric, '_', or '-' characters)"
if kwargs['count'].isdigit():
if not 1 <= int(kwargs['count']) <= 10:
return "invalid count specified, must be an integer (1-10)"
else:
return "invalid count specified, must be an integer (1-10)"
if kwargs['count'] == '1':
new_disks = {disk_key}
else:
limit = int(kwargs['count']) + 1
new_disks = set(
['{}{}'.format(disk_key, ctr) for ctr in range(1, limit)])
if any(new_disk in config['disks'] for new_disk in new_disks):
return ("at least one rbd image(s) with that name/prefix is "
"already defined")
gateways_defined = len([
key for key in config['gateways']
if isinstance(config['gateways'][key], dict)
])
if gateways_defined < settings.config.minimum_gateways:
return ("disks can not be added until at least {} gateways "
"are defined".format(settings.config.minimum_gateways))
if mode in ["resize", "delete", "reconfigure"]:
# disk must exist in the config
if disk_key not in config['disks']:
return ("rbd {}/{} is not defined to the "
"configuration".format(kwargs['pool'],
kwargs['image']))
if mode == 'resize':
size = kwargs['size'].upper()
current_size = get_rbd_size(kwargs['pool'], kwargs['image'])
if convert_2_bytes(size) <= current_size:
return ("resize value must be larger than the "
"current size ({}/{})".format(human_size(current_size),
current_size))
if mode in ['create', 'reconfigure']:
try:
settings.Settings.normalize_controls(kwargs['controls'],
LUN.SETTINGS)
except ValueError as err:
return (err)
if mode == 'delete':
# disk must *not* be allocated to a client in the config
allocation_list = []
for client_iqn in config['clients']:
client_metadata = config['clients'][client_iqn]
if disk_key in client_metadata['luns']:
allocation_list.append(client_iqn)
if allocation_list:
return ("Unable to delete {}. Allocated "
"to: {}".format(disk_key, ','.join(allocation_list)))
try:
with rados.Rados(conffile=settings.config.cephconf) as cluster:
with cluster.open_ioctx(kwargs['pool']) as ioctx:
with rbd.Image(ioctx, kwargs['image']) as rbd_image:
if list(rbd_image.list_snaps()):
return ("Unable to delete {}. Snapshots must "
"be removed first.".format(disk_key))
except rbd.ImageNotFound:
pass
except Exception as e:
return "Unable to query {}: {}".format(disk_key, e)
return 'ok'