def create_iscsi_target(self, name, vol_id, tid, lun, path,
chap_auth=None):
scst_group = "%s%s" % (self.initiator_iqn, self.target_name)
vol_name = path.split("/")[3]
try:
(out, _err) = self.scst_execute('-noprompt',
'-set_drv_attr',
self.target_driver,
'-attributes',
'enabled=1')
LOG.debug('StdOut from set driver attribute: %s', out)
except putils.ProcessExecutionError as e:
LOG.error(_LE("Failed to set attribute for enable target driver "
"%s"), e)
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to enable SCST Target driver.")
if self._get_target(name) is None:
try:
(out, _err) = self.scst_execute('-add_target', name,
'-driver', self.target_driver)
LOG.debug("StdOut from scstadmin create target: %s", out)
except putils.ProcessExecutionError as e:
LOG.error(_LE("Failed to create iscsi target for volume "
"id:%(vol_id)s: %(e)s"), {'vol_id': name, 'e': e})
raise exception.ISCSITargetCreateFailed(volume_id=vol_name)
try:
(out, _err) = self.scst_execute('-enable_target', name,
'-driver', self.target_driver)
LOG.debug("StdOut from scstadmin enable target: %s", out)
except putils.ProcessExecutionError as e:
LOG.error(_LE("Failed to set 'enable' attribute for "
"SCST target %s"), e)
raise exception.ISCSITargetHelperCommandFailed(
error_mesage="Failed to enable SCST Target.")
if chap_auth and self.target_name:
try:
chap_string = self._iscsi_authentication('IncomingUser='******'-noprompt',
'-set_tgt_attr', name,
'-driver',
self.target_driver,
'-attributes',
chap_string)
LOG.debug("StdOut from scstadmin set target attribute:"
" %s.", out)
except putils.ProcessExecutionError:
msg = _("Failed to set attribute 'Incoming user' for "
"SCST target.")
LOG.exception(msg)
raise exception.ISCSITargetHelperCommandFailed(
error_mesage=msg)
if self.target_name:
if self._get_group() is None:
try:
(out, _err) = self.scst_execute('-add_group', scst_group,
'-driver',
self.target_driver,
'-target', name)
LOG.debug("StdOut from scstadmin create group: %s", out)
except putils.ProcessExecutionError as e:
LOG.error(_LE("Failed to create group to SCST target "
"%s"), e)
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to create group to SCST target.")
try:
(out, _err) = self.scst_execute('-add_init',
self.initiator_iqn,
'-driver', self.target_driver,
'-target', name,
'-group', scst_group)
LOG.debug("StdOut from scstadmin add initiator: %s", out)
except putils.ProcessExecutionError as e:
LOG.error(_LE("Failed to add initiator to group "
" for SCST target %s"), e)
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to add Initiator to group for "
"SCST target.")
tid = self._get_target(name)
if self.target_name is None:
disk_id = "disk%s" % tid
else:
disk_id = "%s%s" % (lun, vol_id.split('-')[-1])
try:
self.scst_execute('-open_dev', disk_id,
'-handler', 'vdisk_fileio',
'-attributes', 'filename=%s' % path)
except putils.ProcessExecutionError as e:
LOG.error(_LE("Failed to add device to handler %s"), e)
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to add device to SCST handler.")
try:
if self.target_name:
self.scst_execute('-add_lun', lun,
'-driver', self.target_driver,
'-target', name,
'-device', disk_id,
'-group', scst_group)
else:
self.scst_execute('-add_lun', lun,
'-driver', self.target_driver,
'-target', name,
'-device', disk_id)
except putils.ProcessExecutionError as e:
LOG.error(_LE("Failed to add lun to SCST target "
"id:%(vol_id)s: %(e)s"), {'vol_id': name, 'e': e})
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to add LUN to SCST Target for "
"volume " + vol_name)
# SCST uses /etc/scst.conf as the default configuration when it
# starts
try:
self.scst_execute('-write_config', '/etc/scst.conf')
except putils.ProcessExecutionError as e:
LOG.error(_LE("Failed to write in /etc/scst.conf."))
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to write in /etc/scst.conf.")
return tid
def create_iscsi_target(self, name, tid, lun, path,
chap_auth=None, **kwargs):
(out, err) = utils.execute('iscsictl',
'-c',
'target=ALL',
run_as_root=True)
LOG.debug("Targets prior to update: %s", out)
volumes_dir = self._get_volumes_dir()
fileutils.ensure_tree(volumes_dir)
vol_id = name.split(':')[1]
if netutils.is_valid_ipv4(self.configuration.iscsi_ip_address):
portal = "%s:%s" % (self.configuration.iscsi_ip_address,
self.configuration.iscsi_port)
else:
# ipv6 addresses use [ip]:port format, ipv4 use ip:port
portal = "[%s]:%s" % (self.configuration.iscsi_ip_address,
self.configuration.iscsi_port)
if chap_auth is None:
volume_conf = self.TARGET_FMT % (name, path, portal)
else:
volume_conf = self.TARGET_FMT_WITH_CHAP % (name,
path, portal,
'"%s":"%s"' % chap_auth)
LOG.debug('Creating iscsi_target for: %s', vol_id)
volume_path = os.path.join(volumes_dir, vol_id)
if os.path.exists(volume_path):
LOG.warning(_LW('Persistence file already exists for volume, '
'found file at: %s'), volume_path)
f = open(volume_path, 'w+')
f.write(volume_conf)
f.close()
LOG.debug('Created volume path %(vp)s,\n'
'content: %(vc)s',
{'vp': volume_path, 'vc': volume_conf})
old_persist_file = None
old_name = kwargs.get('old_name', None)
if old_name:
LOG.debug('Detected old persistence file for volume '
'%{vol}s at %{old_name}s',
{'vol': vol_id, 'old_name': old_name})
old_persist_file = os.path.join(volumes_dir, old_name)
try:
# With the persistent tgts we create them
# by creating the entry in the persist file
# and then doing an update to get the target
# created.
(out, err) = utils.execute('iscsictl', '-S', 'target=%s' % name,
'-f', volume_path,
'-x', self.config,
run_as_root=True)
except putils.ProcessExecutionError as e:
LOG.error(_LE("Failed to create iscsi target for volume "
"id:%(vol_id)s: %(e)s"),
{'vol_id': vol_id, 'e': e})
# Don't forget to remove the persistent file we created
os.unlink(volume_path)
raise exception.ISCSITargetCreateFailed(volume_id=vol_id)
finally:
LOG.debug("StdOut from iscsictl -S: %s", out)
LOG.debug("StdErr from iscsictl -S: %s", err)
# Grab targets list for debug
(out, err) = utils.execute('iscsictl',
'-c',
'target=ALL',
run_as_root=True)
LOG.debug("Targets after update: %s", out)
iqn = '%s%s' % (self.iscsi_target_prefix, vol_id)
tid = self._get_target(iqn)
if tid is None:
LOG.error(_LE("Failed to create iscsi target for volume "
"id:%(vol_id)s. Please verify your configuration "
"in %(volumes_dir)'"), {
'vol_id': vol_id,
'volumes_dir': volumes_dir, })
raise exception.NotFound()
if old_persist_file is not None and os.path.exists(old_persist_file):
os.unlink(old_persist_file)
return tid
def create_iscsi_target(self,
name,
tid,
lun,
path,
chap_auth=None,
**kwargs):
# Note(jdg) tid and lun aren't used by TgtAdm but remain for
# compatibility
# NOTE(jdg): Remove this when we get to the bottom of bug: #1398078
# for now, since we intermittently hit target already exists we're
# adding some debug info to try and pinpoint what's going on
(out, err) = utils.execute('tgtadm',
'--lld',
'iscsi',
'--op',
'show',
'--mode',
'target',
run_as_root=True)
LOG.debug("Targets prior to update: %s", out)
fileutils.ensure_tree(self.volumes_dir)
vol_id = name.split(':')[1]
write_cache = self.configuration.get('iscsi_write_cache', 'on')
driver = self.iscsi_protocol
chap_str = ''
if chap_auth is not None:
chap_str = 'incominguser %s %s' % chap_auth
target_flags = self.configuration.get('iscsi_target_flags', '')
if target_flags:
target_flags = 'bsoflags ' + target_flags
volume_conf = self.VOLUME_CONF % {
'name': name,
'path': path,
'driver': driver,
'chap_auth': chap_str,
'target_flags': target_flags,
'write_cache': write_cache
}
LOG.debug('Creating iscsi_target for Volume ID: %s', vol_id)
volumes_dir = self.volumes_dir
volume_path = os.path.join(volumes_dir, vol_id)
if os.path.exists(volume_path):
LOG.warning(
_LW('Persistence file already exists for volume, '
'found file at: %s'), volume_path)
f = open(volume_path, 'w+')
f.write(volume_conf)
f.close()
LOG.debug(('Created volume path %(vp)s,\n'
'content: %(vc)s'), {
'vp': volume_path,
'vc': volume_conf
})
old_persist_file = None
old_name = kwargs.get('old_name', None)
if old_name is not None:
LOG.debug(
'Detected old persistence file for volume '
'%{vol}s at %{old_name}s', {
'vol': vol_id,
'old_name': old_name
})
old_persist_file = os.path.join(volumes_dir, old_name)
try:
# With the persistent tgts we create them
# by creating the entry in the persist file
# and then doing an update to get the target
# created.
self._do_tgt_update(name)
except putils.ProcessExecutionError as e:
if "target already exists" in e.stderr:
# Adding the additional Warning message below for a clear
# ER marker (Ref bug: #1398078).
LOG.warning(
_LW('Could not create target because '
'it already exists for volume: %s'), vol_id)
LOG.debug('Exception was: %s', e)
else:
LOG.error(
_LE("Failed to create iscsi target for Volume "
"ID: %(vol_id)s: %(e)s"), {
'vol_id': vol_id,
'e': e
})
# Don't forget to remove the persistent file we created
os.unlink(volume_path)
raise exception.ISCSITargetCreateFailed(volume_id=vol_id)
# Grab targets list for debug
# Consider adding a check for lun 0 and 1 for tgtadm
# before considering this as valid
(out, err) = utils.execute('tgtadm',
'--lld',
'iscsi',
'--op',
'show',
'--mode',
'target',
run_as_root=True)
LOG.debug("Targets after update: %s", out)
iqn = '%s%s' % (self.iscsi_target_prefix, vol_id)
tid = self._get_target(iqn)
if tid is None:
LOG.error(
_LE("Failed to create iscsi target for Volume "
"ID: %(vol_id)s. Please ensure your tgtd config "
"file contains 'include %(volumes_dir)s/*'"), {
'vol_id': vol_id,
'volumes_dir': volumes_dir,
})
raise exception.NotFound()
# NOTE(jdg): Sometimes we have some issues with the backing lun
# not being created, believe this is due to a device busy
# or something related, so we're going to add some code
# here that verifies the backing lun (lun 1) was created
# and we'll try and recreate it if it's not there
if not self._verify_backing_lun(iqn, tid):
try:
self._recreate_backing_lun(iqn, tid, name, path)
except putils.ProcessExecutionError:
os.unlink(volume_path)
raise exception.ISCSITargetCreateFailed(volume_id=vol_id)
# Finally check once more and if no go, fail and punt
if not self._verify_backing_lun(iqn, tid):
os.unlink(volume_path)
raise exception.ISCSITargetCreateFailed(volume_id=vol_id)
if old_persist_file is not None and os.path.exists(old_persist_file):
os.unlink(old_persist_file)
return tid
def create_iscsi_target(self,
name,
tid,
lun,
path,
chap_auth=None,
**kwargs):
# Note(jdg) tid and lun aren't used by TgtAdm but remain for
# compatibility
utils.ensure_tree(FLAGS.volumes_dir)
vol_id = name.split(':')[1]
if chap_auth is None:
volume_conf = """
<target %s>
backing-store %s
</target>
""" % (name, path)
else:
volume_conf = """
<target %s>
backing-store %s
%s
</target>
""" % (name, path, chap_auth)
LOG.info(_('Creating iscsi_target for: %s') % vol_id)
volumes_dir = FLAGS.volumes_dir
volume_path = os.path.join(volumes_dir, vol_id)
f = open(volume_path, 'w+')
f.write(volume_conf)
f.close()
old_persist_file = None
old_name = kwargs.get('old_name', None)
if old_name is not None:
old_persist_file = os.path.join(volumes_dir, old_name)
try:
(out, err) = self._execute('tgt-admin',
'--update',
name,
run_as_root=True)
except exception.ProcessExecutionError as e:
LOG.error(
_("Failed to create iscsi target for volume "
"id:%(vol_id)s: %(e)s") % {
'vol_id': vol_id,
'e': str(e)
})
#Don't forget to remove the persistent file we created
os.unlink(volume_path)
raise exception.ISCSITargetCreateFailed(volume_id=vol_id)
iqn = '%s%s' % (FLAGS.iscsi_target_prefix, vol_id)
tid = self._get_target(iqn)
if tid is None:
LOG.error(
_("Failed to create iscsi target for volume "
"id:%(vol_id)s. Please ensure your tgtd config file "
"contains 'include %(volumes_dir)s/*'") % locals())
raise exception.NotFound()
if old_persist_file is not None and os.path.exists(old_persist_file):
os.unlink(old_persist_file)
return tid
def create_iscsi_target(self, name, tid, lun, path,
chap_auth=None, **kwargs):
# Note(jdg) tid and lun aren't used by TgtAdm but remain for
# compatibility
fileutils.ensure_tree(self.volumes_dir)
vol_id = name.split(':')[1]
if chap_auth is None:
volume_conf = self.VOLUME_CONF % (name, path)
else:
volume_conf = self.VOLUME_CONF_WITH_CHAP_AUTH % (name,
path, chap_auth)
LOG.info(_('Creating iscsi_target for: %s') % vol_id)
volumes_dir = self.volumes_dir
volume_path = os.path.join(volumes_dir, vol_id)
f = open(volume_path, 'w+')
f.write(volume_conf)
f.close()
LOG.debug(('Created volume path %(vp)s,\n'
'content: %(vc)s')
% {'vp': volume_path, 'vc': volume_conf})
old_persist_file = None
old_name = kwargs.get('old_name', None)
if old_name is not None:
old_persist_file = os.path.join(volumes_dir, old_name)
try:
# with the persistent tgts we create them
# by creating the entry in the persist file
# and then doing an update to get the target
# created.
(out, err) = self._execute('tgt-admin', '--update', name,
run_as_root=True)
LOG.debug("StdOut from tgt-admin --update: %s", out)
LOG.debug("StdErr from tgt-admin --update: %s", err)
# Grab targets list for debug
# Consider adding a check for lun 0 and 1 for tgtadm
# before considering this as valid
(out, err) = self._execute('tgtadm',
'--lld',
'iscsi',
'--op',
'show',
'--mode',
'target',
run_as_root=True)
LOG.debug("Targets after update: %s" % out)
except putils.ProcessExecutionError as e:
LOG.warning(_("Failed to create iscsi target for volume "
"id:%(vol_id)s: %(e)s")
% {'vol_id': vol_id, 'e': e})
#Don't forget to remove the persistent file we created
os.unlink(volume_path)
raise exception.ISCSITargetCreateFailed(volume_id=vol_id)
iqn = '%s%s' % (self.iscsi_target_prefix, vol_id)
tid = self._get_target(iqn)
if tid is None:
LOG.error(_("Failed to create iscsi target for volume "
"id:%(vol_id)s. Please ensure your tgtd config file "
"contains 'include %(volumes_dir)s/*'") % {
'vol_id': vol_id,
'volumes_dir': volumes_dir, })
raise exception.NotFound()
# NOTE(jdg): Sometimes we have some issues with the backing lun
# not being created, believe this is due to a device busy
# or something related, so we're going to add some code
# here that verifies the backing lun (lun 1) was created
# and we'll try and recreate it if it's not there
if not self._verify_backing_lun(iqn, tid):
try:
self._recreate_backing_lun(iqn, tid, name, path)
except putils.ProcessExecutionError:
os.unlink(volume_path)
raise exception.ISCSITargetCreateFailed(volume_id=vol_id)
# Finally check once more and if no go, fail and punt
if not self._verify_backing_lun(iqn, tid):
os.unlink(volume_path)
raise exception.ISCSITargetCreateFailed(volume_id=vol_id)
if old_persist_file is not None and os.path.exists(old_persist_file):
os.unlink(old_persist_file)
return tid
