def iter_targets(self):
"""
Return a generator over all FS targets.
"""
for target_type in ['mgt', 'mdt', 'ost']:
if target_type not in self._fs.model:
continue
tgt_cf_list = self._fs.get(target_type)
for t in tgt_cf_list:
yield Target(target_type, t)
def unregister_targets(self, targets=None):
"""
Set filesystem targets as available in the backend.
If `targets' is not specified, all managed targets from the
filesystem will be used.
These targets could be now reuse.
"""
if not targets:
targets = []
for tgttype in ('mgt', 'mdt', 'ost'):
if tgttype not in self._fs.model:
continue
for target in self._fs.get(tgttype):
if target.get('mode') == 'managed':
targets.append(Target(tgttype, target))
for target in targets:
self._fs.unregister_target(target)
def register_targets(self, targets=None):
"""
Set filesystem targets as 'in use'.
If `targets' is not specified, all managed targets from the
filesystem will be used.
These targets could not be use anymore for other filesystems.
"""
if not targets:
targets = []
for tgttype in ('mgt', 'mdt', 'ost'):
if tgttype not in self._fs.model:
continue
for target in self._fs.get(tgttype):
if target.get('mode') == 'managed':
targets.append(Target(tgttype, target))
for target in targets:
self._fs.register_target(target)
def iter_targets_ost(self):
tgt_cf_list = self._fs.get('ost')
for t in tgt_cf_list:
yield Target('OST', t)
def get_target_mdt(self):
tgt_cf_list = self._fs.get('mdt')
return Target('MDT', tgt_cf_list[0])
def get_target_mgt(self):
tgt_cf_list = self._fs.get('mgt')
return Target('MGT', tgt_cf_list[0])