def show_target(self, tid, iqn):
if iqn is None:
raise exception.InvalidParameterValue(
err=_('valid iqn needed for show_target'))
tid = self._get_target(iqn)
if tid is None:
raise exception.ISCSITargetHelperCommandFailed(
error_message="Target not found")
def remove_iscsi_target(self, tid, lun, vol_id, vol_name, **kwargs):
disk_id = "%s%s" % (lun, vol_id.split('-')[-1])
vol_uuid_file = vol_name
if self.target_name is None:
iqn = '%s%s' % (self.iscsi_target_prefix, vol_uuid_file)
else:
iqn = self.target_name
if self.target_name is None:
try:
self.scst_execute('-noprompt', '-rem_target', iqn, '-driver',
'iscsi')
except putils.ProcessExecutionError as e:
LOG.error(
"Failed to remove iscsi target for volume "
"id:%(vol_id)s: %(e)s", {
'vol_id': vol_id,
'e': e
})
raise exception.ISCSITargetRemoveFailed(volume_id=vol_id)
try:
self.scst_execute('-noprompt', '-close_dev', "disk%s" % tid,
'-handler', 'vdisk_fileio')
except putils.ProcessExecutionError as e:
LOG.error("Failed to close disk device %s", e)
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to close disk device for "
"SCST handler.")
if self._get_target(iqn):
try:
self.scst_execute('-noprompt', '-rem_target', iqn,
'-driver', self.target_driver)
except putils.ProcessExecutionError as e:
LOG.error(
"Failed to remove iscsi target for "
"volume id:%(vol_id)s: %(e)s", {
'vol_id': vol_id,
'e': e
})
raise exception.ISCSITargetRemoveFailed(volume_id=vol_id)
else:
if not int(lun) in self._get_luns_info():
raise exception.ISCSITargetRemoveFailed(volume_id=vol_id)
try:
scst_group = "%s%s" % (self.remove_initiator_iqn,
self.target_name)
self.scst_execute('-noprompt', '-rem_lun', lun, '-driver',
self.target_driver, '-target', iqn, '-group',
scst_group)
except putils.ProcessExecutionError as e:
LOG.error("Failed to remove LUN %s", e)
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to remove LUN for SCST Target.")
try:
self.scst_execute('-noprompt', '-close_dev', disk_id,
'-handler', 'vdisk_fileio')
except putils.ProcessExecutionError as e:
LOG.error("Failed to close disk device %s", e)
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to close disk device for "
"SCST handler.")
self.scst_execute('-write_config', '/etc/scst.conf')
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("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(
"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(
"Failed to set 'enable' attribute for "
"SCST target %s", e)
raise exception.ISCSITargetHelperCommandFailed(
error_message="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_message=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("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(
"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("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(
"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("Failed to write in /etc/scst.conf.")
raise exception.ISCSITargetHelperCommandFailed(
error_message="Failed to write in /etc/scst.conf.")
return tid
