def get(self, id, exports=None):
if exports is None:
exports = self._scan_exports()
for v in exports:
if v.get('volume') == id:
v['sessions'] = self._sessions(id)
return v
raise NotFound("No exports named '%s'" % id)
def get(self, volume, backup_id):
running = self._backup_is_running(volume['id'], backup_id)
if not running:
raise NotFound("no active backup running on '%s' called '%s'" %
(volume['id'], backup_id))
stats_file = self._stats_file(volume['id'])
with ResourceFile(stats_file) as lock:
stats = lock.read()
return {
'lock': self._resource_file(volume['id']),
'status': 'RUNNING',
'stats': stats
}
def delete(self, id, force=False, initiator=None):
exports = self._get_exports(id)
if not exports:
raise NotFound("No export for volume '%s'" % id)
# we hope there will only ever be one export, and try to ensure with
# syncronization in create
for export in exports:
tid = export['tid']
try:
out = self.ietadm(op='delete', tid=tid)
except DeviceBusy, e:
if force:
for i in range(3):
try:
return self.force_delete(id)
except IscsitargetError:
logger.exception('force delete attempt %s failed' %
(i + 1))
sleep(1 + i**2)
# try one more time and let it die
return self.force_delete(id)
sessions = self._sessions(id)
if initiator:
for session in sessions:
if (initiator == session['initiator']
and session['connected']):
raise ResourceBusy(
"Volume '%s' is currently attached "
"to '%s' for initiator: %s" %
(id, session['ip'], initiator))
# Fall through, our initiator didn't match, someone else
# is attached. Delay "failure" until delete.
return
else:
for session in sessions:
if session['connected']:
raise ResourceBusy(
"Volume '%s' is currently attached "
"to '%s'" % (id, session['ip']))
logger.exception("Unable to remove target for '%s' "
"because it was busy" % id)
raise ResourceBusy("Volume '%s' is currently attached" % id)
self.rewrite_config()
def create(self, id, ip=None):
with lock.ResourceFile(self._build_lock_path(id)):
try:
# see if an export was created while we were locking
self.get(id)
except NotFound:
pass
else:
raise AlreadyExists("An export already exists for "
"volume '%s'" % id)
# create target
params = {'Name': self._generate_target_name(id)}
try:
out = self.ietadm(op='new', tid='auto', params=params)
except InvalidArgument:
logger.exception("Unable to create target for '%s'" % id)
raise ServiceUnavailable("Invalid argument while trying to "
"create export for '%s'" % id)
# lookup tid
tid = self._get_tid(id)
# add lun
path = self._lun_path(id)
params = {'Path': path, 'Type': 'blockio'}
try:
out += self.ietadm(op='new', tid=tid, lun=0, params=params)
except (NoSuchFile, NotPermitted):
# clean up the target
self.delete(id)
if not os.path.exists(path):
raise NotFound("No volume named '%s'" % id)
logger.exception('Unable to create export for %s' % id)
raise ServiceUnavailable("Invalid param trying to create "
"export for '%s'" % id)
# Write the new exports to the iet config
exports = self.rewrite_config()
if ip:
self.add_initiator_allow(id, ip)
return self.get(id, exports=exports)
def _get_tid(self, volume):
try:
export = self._get_exports(volume)[0]
except IndexError:
raise NotFound("No export for volume '%s'" % volume)
return export['tid']
def mock_delete(*args, **kwargs):
raise NotFound('you are too late')
def delete(self, id):
try:
del self.exports[id]
except KeyError:
raise NotFound()
return 'deleted'
def get(self, id):
try:
return dict(self.exports[id])
except KeyError:
raise NotFound()
def delete(self, id, callback=None, lock=None):
try:
del self.volumes[id]
except KeyError:
raise NotFound()
return 'deleted'
def get(self, volume_id):
try:
volume = self._get_volume(volume_id)
except ProcessError, e:
raise NotFound('No volume named %s.' % volume_id, id=volume_id)