/usr/bin/targetd_lsmplugin is in libstoragemgmtd 0.0.20-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# Copyright (C) 2011-2013 Red Hat, Inc.
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Author: Andy Grover <agrover at redhat com>
import sys
import syslog
import copy
try:
from lsm.iplugin import IStorageAreaNetwork, INetworkAttachedStorage, INfs
from lsm.pluginrunner import PluginRunner
from lsm.data import (Pool, Volume, System, Capabilities, Initiator,
FileSystem, Snapshot, NfsExport)
from lsm.common import (LsmError, ErrorNumber, uri_parse, md5)
import urllib2
import json
import time
import urlparse
import socket
from lsm.version import VERSION
default_user = "admin"
default_port = 18700
path = "/targetrpc"
class TargetdStorage(IStorageAreaNetwork, INfs):
def startup(self, uri, password, timeout, flags=0):
self.uri = uri_parse(uri)
self.password = password
self.tmo = timeout
self.rpc_id = 1
user = self.uri.get('username', default_user)
port = self.uri.get('port', default_port)
self.host_with_port = "%s:%s" % (self.uri['host'], port)
if self.uri['scheme'].lower() == 'targetd+ssl':
self.scheme = 'https'
else:
self.scheme = 'http'
self.url = urlparse.urlunsplit(
(self.scheme, self.host_with_port, path, None, None))
auth = ('%s:%s' % (user, self.password)).encode('base64')[:-1]
self.headers = {'Content-Type': 'application/json',
'Authorization': 'Basic %s' % (auth,)}
self.system = System("targetd", "targetd storage appliance",
System.STATUS_UNKNOWN)
def set_time_out(self, ms, flags=0):
self.tmo = ms
def get_time_out(self, flags=0):
return self.tmo
def shutdown(self, flags=0):
pass
def capabilities(self, system, flags=0):
cap = Capabilities()
cap.set(Capabilities.BLOCK_SUPPORT)
cap.set(Capabilities.FS_SUPPORT)
cap.set(Capabilities.VOLUMES)
cap.set(Capabilities.VOLUME_CREATE)
cap.set(Capabilities.VOLUME_REPLICATE)
cap.set(Capabilities.VOLUME_REPLICATE_COPY)
cap.set(Capabilities.VOLUME_DELETE)
cap.set(Capabilities.VOLUME_OFFLINE)
cap.set(Capabilities.VOLUME_ONLINE)
cap.set(Capabilities.INITIATORS)
cap.set(Capabilities.VOLUME_INITIATOR_GRANT)
cap.set(Capabilities.VOLUME_INITIATOR_REVOKE)
cap.set(Capabilities.VOLUME_ACCESSIBLE_BY_INITIATOR)
cap.set(Capabilities.INITIATORS_GRANTED_TO_VOLUME)
cap.set(Capabilities.FS)
cap.set(Capabilities.FS_CREATE)
cap.set(Capabilities.FS_DELETE)
cap.set(Capabilities.FS_CLONE)
cap.set(Capabilities.FS_SNAPSHOT_CREATE)
cap.set(Capabilities.FS_SNAPSHOT_DELETE)
cap.set(Capabilities.FS_SNAPSHOTS)
return cap
def plugin_info(self, flags=0):
return "Linux LIO target support", VERSION
def systems(self, flags=0):
# verify we're online
self._jsonrequest("pool_list")
return [self.system]
def job_status(self, job_id, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def job_free(self, job_id, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def volumes(self, flags=0):
volumes = []
for p_name in (p['name'] for p in self._jsonrequest("pool_list") if
p['type'] == 'block'):
for vol in self._jsonrequest("vol_list", dict(pool=p_name)):
volumes.append(Volume(vol['uuid'], vol['name'], vol['uuid'],
512, vol['size'] / 512,
Volume.STATUS_OK,
self.system.id, p_name))
return volumes
def pools(self, flags=0):
pools = []
for pool in self._jsonrequest("pool_list"):
pools.append(Pool(pool['name'], pool['name'], pool['size'],
pool['free_size'], 'targetd'))
return pools
def initiators(self, flags=0):
inits = []
for init in set(i['initiator_wwn']
for i in self._jsonrequest("export_list")):
inits.append(Initiator(init, Initiator.TYPE_ISCSI, init))
return inits
def _get_volume(self, pool_id, volume_name):
vol = [v for v in self._jsonrequest("vol_list", dict(pool=pool_id))
if v['name'] == volume_name][0]
return Volume(vol['uuid'], vol['name'], vol['uuid'],
512, vol['size'] / 512, Volume.STATUS_OK,
self.system.id, pool_id)
def _get_fs(self, pool_id, fs_name):
fs = self.fs()
for f in fs:
if f.name == fs_name and f.pool_id == pool_id:
return f
return None
def _get_ss(self, fs, ss_name):
ss = self.fs_snapshots(fs)
for s in ss:
if s.name == ss_name:
return s
return None
def volume_create(self, pool, volume_name, size_bytes, provisioning,
flags=0):
self._jsonrequest("vol_create", dict(pool=pool.id,
name=volume_name,
size=size_bytes))
return None, self._get_volume(pool.id, volume_name)
def volume_delete(self, volume, flags=0):
self._jsonrequest("vol_destroy",
dict(pool=volume.pool_id, name=volume.name))
def volume_replicate(self, pool, rep_type, volume_src, name, flags=0):
if rep_type != Volume.REPLICATE_COPY:
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
#pool id is optional, use volume src as default
pool_id = volume_src.pool_id
if pool:
pool_id = pool.id
self._jsonrequest("vol_copy",
dict(pool=pool_id, vol_orig=volume_src.name,
vol_new=name))
return None, self._get_volume(pool_id, name)
def volume_replicate_range_block_size(self, system, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def volume_replicate_range(self, rep_type, volume_src, volume_dest,
ranges, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def volume_online(self, volume, flags=0):
vol_list = self._jsonrequest("vol_list", dict(pool=volume.pool_id))
return volume.name in [vol['name'] for vol in vol_list]
def volume_offline(self, volume, flags=0):
return not self.volume_online(volume)
def volume_resize(self, volume, new_size_bytes, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def access_group_grant(self, group, volume, access, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def access_group_revoke(self, group, volume, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def access_group_list(self, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def access_group_create(self, name, initiator_id, id_type, system_id,
flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def access_group_del(self, group, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def access_group_add_initiator(self, group, initiator_id, id_type,
flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def access_group_del_initiator(self, group, initiator, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def volumes_accessible_by_access_group(self, group, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def access_groups_granted_to_volume(self, volume, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def iscsi_chap_auth(self, initiator, in_user, in_password, out_user,
out_password, flags=0):
self._jsonrequest("initiator_set_auth",
dict(initiator_wwn=initiator.id,
in_user=in_user,
in_pass=in_password,
out_user=out_user,
out_pass=out_password))
return None
def initiator_grant(self, initiator_id, initiator_type, volume, access,
flags=0):
if initiator_type != Initiator.TYPE_ISCSI:
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
# find lowest unused lun and use that
used_luns = [x['lun'] for x in self._jsonrequest("export_list")]
lun = 0
while True:
if lun in used_luns:
lun += 1
else:
break
self._jsonrequest("export_create",
dict(pool=volume.pool_id,
vol=volume.name,
initiator_wwn=initiator_id, lun=lun))
def initiator_revoke(self, initiator, volume, flags=0):
self._jsonrequest("export_destroy",
dict(pool=volume.pool_id,
vol=volume.name,
initiator_wwn=initiator.id))
def volumes_accessible_by_initiator(self, initiator, flags=0):
exports = [x for x in self._jsonrequest("export_list")
if initiator.id == x['initiator_wwn']]
vols = []
for export in exports:
vols.append(Volume(export['vol_uuid'], export['vol_name'],
export['vol_uuid'], 512,
export['vol_size'] / 512,
Volume.STATUS_OK, self.system.id,
export['pool']))
return vols
def initiators_granted_to_volume(self, volume, flags=0):
exports = [x for x in self._jsonrequest("export_list")
if volume.id == x['vol_uuid']]
inits = []
for export in exports:
name = export['initiator_wwn']
inits.append(Initiator(name, Initiator.TYPE_ISCSI, name))
return inits
def volume_child_dependency(self, volume, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def volume_child_dependency_rm(self, volume, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def fs(self, flags=0):
rc = []
for fs in self._jsonrequest("fs_list"):
#self, id, name, total_space, free_space, pool_id, system_id
rc.append(FileSystem(fs['uuid'], fs['name'], fs['total_space'],
fs['free_space'], fs['pool'],
self.system.id))
return rc
def fs_delete(self, fs, flags=0):
self._jsonrequest("fs_destroy", dict(uuid=fs.id))
def fs_resize(self, fs, new_size_bytes, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def fs_create(self, pool, name, size_bytes, flags=0):
self._jsonrequest("fs_create", dict(pool_name=pool.id, name=name,
size_bytes=size_bytes))
return None, self._get_fs(pool.name, name)
def fs_clone(self, src_fs, dest_fs_name, snapshot=None, flags=0):
ss_id = None
if snapshot:
ss_id = snapshot.id
self._jsonrequest("fs_clone", dict(fs_uuid=src_fs.id,
dest_fs_name=dest_fs_name,
snapshot_id=ss_id))
return None, self._get_fs(src_fs.pool_id, dest_fs_name)
def file_clone(self, fs, src_file_name, dest_file_name, snapshot=None,
flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def fs_snapshots(self, fs, flags=0):
rc = []
for ss in self._jsonrequest("ss_list", dict(fs_uuid=fs.id)):
#id, name, timestamp
rc.append(Snapshot(ss['uuid'], ss['name'], ss['timestamp']))
return rc
def fs_snapshot_create(self, fs, snapshot_name, files, flags=0):
self._jsonrequest("fs_snapshot", dict(fs_uuid=fs.id,
dest_ss_name=snapshot_name))
return None, self._get_ss(fs, snapshot_name)
def fs_snapshot_delete(self, fs, snapshot, flags=0):
self._jsonrequest("fs_snapshot_delete", dict(fs_uuid=fs.id,
ss_uuid=snapshot.id))
def fs_snapshot_revert(self, fs, snapshot, files, restore_files,
all_files=False, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def fs_child_dependency(self, fs, files, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def fs_child_dependency_rm(self, fs, files, flags=0):
raise LsmError(ErrorNumber.NO_SUPPORT, "Not supported")
def export_auth(self, flags=0):
exports = self._jsonrequest("nfs_export_auth_list")
return exports
def _get_value(self, options, key):
for o in options:
if '=' in o:
k, v = o.split('=')
if k == key:
return v
return None
def _option_string(self, nfs_options):
cpy = copy.copy(nfs_options)
if 'ro' in cpy:
cpy.remove('ro')
if 'rw' in cpy:
cpy.remove('rw')
if 'no_root_squash' in cpy:
cpy.remove('no_root_squash')
if 'root_squash' in cpy:
cpy.remove('root_squash')
cpy.sort()
s = ','.join(cpy)
return s
def _calculate_export_md5(self, path, options):
opts = self._option_string(options)
return md5(path + opts)
def exports(self, flags=0):
tmp_exports = {}
exports = []
fs_full_paths = {}
all_nfs_exports = self._jsonrequest("nfs_export_list")
nfs_exports = []
#Remove those that are not of FS origin
fs_list = self._jsonrequest("fs_list")
for f in fs_list:
fs_full_paths[f['full_path']] = f
for e in all_nfs_exports:
if e['path'] in fs_full_paths:
nfs_exports.append(e)
#Collect like exports to minimize results
for e in nfs_exports:
key = e['path'] + self._option_string(e['options'])
if key in tmp_exports:
tmp_exports[key].append(e)
else:
tmp_exports[key] = [e]
#Walk through the options
for le in tmp_exports.values():
export_id = ""
root = []
rw = []
ro = []
sec = None
anonuid = NfsExport.ANON_UID_GID_NA
anongid = NfsExport.ANON_UID_GID_NA
options = None
for e in le:
host = e['host']
export_id += host
export_id += e['path']
export_id += fs_full_paths[e['path']]['uuid']
options = e['options']
if 'rw' in options:
rw.append(host)
if 'ro' in options:
ro.append(host)
sec = self._get_value(options, 'sec')
if sec is None:
sec = 'sys'
if 'no_root_squash' in options:
root.append(host)
uid = self._get_value(options, 'anonuid')
if uid is not None:
anonuid = uid
gid = self._get_value(options, 'anongid')
if gid is not None:
anongid = gid
exports.append(NfsExport(
self._calculate_export_md5(e['path'], options),
fs_full_paths[e['path']]['uuid'],
e['path'], sec, root, rw, ro, anonuid,
anongid, self._option_string(options)))
return exports
def _get_fs_path(self, fs_id):
for fs in self._jsonrequest("fs_list"):
if fs_id == fs['uuid']:
return fs['full_path']
return None
def export_fs(self, fs_id, export_path, root_list, rw_list, ro_list,
anon_uid=NfsExport.ANON_UID_GID_NA,
anon_gid=NfsExport.ANON_UID_GID_NA,
auth_type=None, options=None, flags=0):
if export_path is not None:
raise LsmError(ErrorNumber.INVALID_ARGUMENT,
'export_path required to be None')
base_opts = []
if anon_uid is not None:
base_opts.append('anonuid=%s' % str(anon_uid))
if anon_gid is not None:
base_opts.append('anongid=%s' % str(anon_gid))
if auth_type is not None:
base_opts.append('sec=%s' % str(auth_type))
fs_path = self._get_fs_path(fs_id)
if fs_path is None:
raise LsmError(ErrorNumber.INVALID_FS, "File system not found")
for e in rw_list:
tmp_opts = copy.copy(base_opts)
if e in root_list:
tmp_opts.append('no_root_squash')
tmp_opts.append('rw')
self._jsonrequest("nfs_export_add",
dict(host=e, path=fs_path,
export_path=None, options=tmp_opts))
for e in ro_list:
tmp_opts = copy.copy(base_opts)
if e in root_list:
tmp_opts.append('no_root_squash')
tmp_opts.append('ro')
self._jsonrequest("nfs_export_add",
dict(host=e, path=fs_path,
export_path=None, options=tmp_opts))
#Kind of a pain to determine which export was newly created as it
#could get merged into an existing record, doh!
#Make sure fs_id's match and that one of the hosts is in the
#record.
exports = self.exports()
h = []
h.extend(rw_list)
h.extend(ro_list)
for e in exports:
if e.fs_id == fs_id:
l = []
l.extend(e.ro)
l.extend(e.rw)
for host in h:
if host in l:
return e
raise LsmError(ErrorNumber.PLUGIN_ERROR, "Failed to create export")
def export_remove(self, export, flags=0):
for e in export.rw:
params = dict(host=e, path=export.export_path)
self._jsonrequest("nfs_export_remove", params)
for e in export.ro:
params = dict(host=e, path=export.export_path)
self._jsonrequest("nfs_export_remove", params)
def _jsonrequest(self, method, params=None):
data = json.dumps(dict(id=self.rpc_id, method=method,
params=params, jsonrpc="2.0"))
self.rpc_id += 1
try:
request = urllib2.Request(self.url, data, self.headers)
response_obj = urllib2.urlopen(request)
except socket.error:
if self.scheme == 'https':
raise
print "socket error, retrying with SSL"
url = urlparse.urlunsplit(
("https", self.host_with_port, path, None, None))
request = urllib2.Request(url, data, self.headers)
response_obj = urllib2.urlopen(request)
response_data = response_obj.read()
response = json.loads(response_data)
if response.get('error', None) is None:
return response.get('result')
else:
if response['error']['code'] <= 0:
#error_text = "%s:%s" % (str(response['error']['code']),
# response['error'].get('message', ''))
raise LsmError(abs(int(response['error']['code'])),
response['error'].get('message', ''))
else: # +code is async execution id
print "Async completion, polling for results"
async_code = response['error']['code']
while True:
time.sleep(1)
results = self._jsonrequest('async_list')
status = results.get(str(async_code), None)
if status:
if status[0]:
print "%d has error %d" % \
(async_code, status[0])
break
else:
print "%d still going, %d%% complete" % \
(async_code, status[1])
else:
print "%s done" % async_code
break
if __name__ == '__main__':
PluginRunner(TargetdStorage, sys.argv).run()
except Exception as e:
#This should be quite rare, but when it does happen this is pretty
#key in understanding what happened, especially when it happens when running
#from the daemon.
msg = "Exception: %s\n" % str(e)
syslog.syslog(syslog.LOG_ERR, msg)
sys.stderr.write(msg)
sys.exit(1)
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