def _get_wt_snapshot(self, description, fail_if_not_found=True):
wt_snapshots = self._conn_wmi.WT_Snapshot(Description=description)
if wt_snapshots:
return wt_snapshots[0]
elif fail_if_not_found:
err_msg = _('Could not find WT Snapshot: %s')
raise exceptions.ISCSITargetException(err_msg % description)
def _get_wt_disk(self, description, fail_if_not_found=True):
# We can retrieve WT Disks only by description.
wt_disks = self._conn_wmi.WT_Disk(Description=description)
if wt_disks:
return wt_disks[0]
elif fail_if_not_found:
err_msg = _('Could not find WT Disk: %s')
raise exceptions.ISCSITargetException(err_msg % description)
def _get_wt_host(self, target_name, fail_if_not_found=True):
hosts = self._conn_wmi.WT_Host(HostName=target_name)
if hosts:
return hosts[0]
elif fail_if_not_found:
err_msg = _('Could not find iSCSI target %s')
raise exceptions.ISCSITargetException(err_msg % target_name)
def get_portal_locations(self, available_only=True,
fail_if_none_found=True):
wt_portals = self._conn_wmi.WT_Portal()
if available_only:
wt_portals = list(filter(lambda portal: portal.Listen, wt_portals))
if not wt_portals and fail_if_none_found:
err_msg = _("No valid iSCSI portal was found.")
raise exceptions.ISCSITargetException(err_msg)
portal_locations = [self._get_portal_location(portal)
for portal in wt_portals]
return portal_locations
def _ensure_wt_provider_available(self):
try:
self._conn_wmi.WT_Portal
except AttributeError:
err_msg = _("The Windows iSCSI target provider is not available.")
raise exceptions.ISCSITargetException(err_msg)
