def change_wt_disk_status(self, wtd_name, enabled):
try:
wt_disk = self._get_wt_disk(wtd_name)
wt_disk.Enabled = enabled
wt_disk.put()
except exceptions.x_wmi as wmi_exc:
err_msg = _('Could not change disk status. WT Disk name: %s')
raise exceptions.ISCSITargetWMIException(err_msg % wtd_name,
wmi_exc=wmi_exc)
def remove_wt_disk(self, wtd_name):
try:
wt_disk = self._get_wt_disk(wtd_name, fail_if_not_found=False)
if wt_disk:
wt_disk.Delete_()
except exceptions.x_wmi as wmi_exc:
err_msg = _("Failed to remove WT disk: %s.")
raise exceptions.ISCSITargetWMIException(err_msg % wtd_name,
wmi_exc=wmi_exc)
def import_wt_disk(self, vhd_path, wtd_name):
"""Import a vhd/x image to be used by Windows iSCSI targets."""
try:
self._conn_wmi.WT_Disk.ImportWTDisk(DevicePath=vhd_path,
Description=wtd_name)
except exceptions.x_wmi as wmi_exc:
err_msg = _("Failed to import WT disk: %s.")
raise exceptions.ISCSITargetWMIException(err_msg % vhd_path,
wmi_exc=wmi_exc)
def extend_wt_disk(self, wtd_name, additional_mb):
try:
wt_disk = self._get_wt_disk(wtd_name)
wt_disk.Extend(additional_mb)
except exceptions.x_wmi as wmi_exc:
err_msg = _('Could not extend WT Disk %(wtd_name)s '
'with additional %(additional_mb)s MB.')
raise exceptions.ISCSITargetWMIException(
err_msg % dict(wtd_name=wtd_name, additional_mb=additional_mb),
wmi_exc=wmi_exc)
def delete_snapshot(self, snapshot_name):
"""Driver entry point for deleting a snapshot."""
try:
wt_snapshot = self._get_wt_snapshot(snapshot_name,
fail_if_not_found=False)
if wt_snapshot:
wt_snapshot.Delete_()
except exceptions.x_wmi as wmi_exc:
err_msg = _('Failed delete snapshot %s.')
raise exceptions.ISCSITargetWMIException(err_msg % snapshot_name,
wmi_exc=wmi_exc)
def set_chap_credentials(self, target_name, chap_username, chap_password):
try:
wt_host = self._get_wt_host(target_name)
wt_host.EnableCHAP = True
wt_host.CHAPUserName = chap_username
wt_host.CHAPSecret = chap_password
wt_host.put()
except exceptions.x_wmi as wmi_exc:
err_msg = _('Failed to set CHAP credentials on target %s.')
raise exceptions.ISCSITargetWMIException(err_msg % target_name,
wmi_exc=wmi_exc)
def deassociate_initiator(self, initiator, target_name):
try:
wt_idmethod = self._get_wt_idmethod(initiator, target_name)
if wt_idmethod:
wt_idmethod.Delete_()
except exceptions.x_wmi as wmi_exc:
err_msg = _('Could not deassociate initiator %(initiator)s from '
'iSCSI target: %(target_name)s.')
raise exceptions.ISCSITargetWMIException(
err_msg % dict(initiator=initiator, target_name=target_name),
wmi_exc=wmi_exc)
def set_chap_credentials(self, target_name, chap_username, chap_password):
try:
wt_host = self._get_wt_host(target_name)
self._wmi_obj_set_attr(wt_host, 'EnableCHAP', True)
self._wmi_obj_set_attr(wt_host, 'CHAPUserName', chap_username)
self._wmi_obj_set_attr(wt_host, 'CHAPSecret', chap_password)
wt_host.put()
except wmi.x_wmi as wmi_exc:
err_msg = _('Failed to set CHAP credentials on target %s.')
raise exceptions.ISCSITargetWMIException(err_msg % target_name,
wmi_exc=wmi_exc)
def add_disk_to_target(self, wtd_name, target_name):
"""Adds the disk to the target."""
try:
wt_disk = self._get_wt_disk(wtd_name)
wt_host = self._get_wt_host(target_name)
wt_host.AddWTDisk(wt_disk.WTD)
except exceptions.x_wmi as wmi_exc:
err_msg = _('Could not add WTD Disk %(wtd_name)s to '
'iSCSI target %(target_name)s.')
raise exceptions.ISCSITargetWMIException(
err_msg % dict(wtd_name=wtd_name, target_name=target_name),
wmi_exc=wmi_exc)
def create_wt_disk(self, vhd_path, wtd_name, size_mb=None):
try:
self._conn_wmi.WT_Disk.NewWTDisk(DevicePath=vhd_path,
Description=wtd_name,
SizeInMB=size_mb)
except exceptions.x_wmi as wmi_exc:
err_msg = _('Failed to create WT Disk. '
'VHD path: %(vhd_path)s '
'WT disk name: %(wtd_name)s')
raise exceptions.ISCSITargetWMIException(
err_msg % dict(vhd_path=vhd_path, wtd_name=wtd_name),
wmi_exc=wmi_exc)
def delete_iscsi_target(self, target_name):
"""Removes ISCSI target."""
try:
wt_host = self._get_wt_host(target_name, fail_if_not_found=False)
if not wt_host:
LOG.debug('Skipping deleting target %s as it does not '
'exist.', target_name)
return
wt_host.RemoveAllWTDisks()
wt_host.Delete_()
except exceptions.x_wmi as wmi_exc:
err_msg = _("Failed to delete ISCSI target %s")
raise exceptions.ISCSITargetWMIException(err_msg % target_name,
wmi_exc=wmi_exc)
def create_iscsi_target(self, target_name, fail_if_exists=False):
"""Creates ISCSI target."""
try:
self._conn_wmi.WT_Host.NewHost(HostName=target_name)
except exceptions.x_wmi as wmi_exc:
err_code = _utils.get_com_error_code(wmi_exc.com_error)
target_exists = err_code == self._ERR_FILE_EXISTS
if not target_exists or fail_if_exists:
err_msg = _('Failed to create iSCSI target: %s.')
raise exceptions.ISCSITargetWMIException(err_msg % target_name,
wmi_exc=wmi_exc)
else:
LOG.info('The iSCSI target %s already exists.', target_name)
def create_snapshot(self, wtd_name, snapshot_name):
"""Driver entry point for creating a snapshot."""
try:
wt_disk = self._get_wt_disk(wtd_name)
snap_id = self._conn_wmi.WT_Snapshot.Create(WTD=wt_disk.WTD)[0]
wt_snap = self._conn_wmi.WT_Snapshot(Id=snap_id)[0]
wt_snap.Description = snapshot_name
wt_snap.put()
except exceptions.x_wmi as wmi_exc:
err_msg = _('Failed to create snapshot. '
'WT Disk name: %(wtd_name)s '
'Snapshot name: %(snapshot_name)s')
raise exceptions.ISCSITargetWMIException(
err_msg % dict(wtd_name=wtd_name, snapshot_name=snapshot_name),
wmi_exc=wmi_exc)
def associate_initiator_with_iscsi_target(self, initiator,
target_name,
id_method=ID_METHOD_IQN):
wt_idmethod = self._get_wt_idmethod(initiator, target_name)
if wt_idmethod:
return
try:
wt_idmethod = self._conn_wmi.WT_IDMethod.new()
wt_idmethod.HostName = target_name
wt_idmethod.Method = id_method
wt_idmethod.Value = initiator
wt_idmethod.put()
except exceptions.x_wmi as wmi_exc:
err_msg = _('Could not associate initiator %(initiator)s to '
'iSCSI target: %(target_name)s.')
raise exceptions.ISCSITargetWMIException(
err_msg % dict(initiator=initiator,
target_name=target_name),
wmi_exc=wmi_exc)
def export_snapshot(self, snapshot_name, dest_path):
"""Driver entry point for exporting snapshots as volumes."""
try:
wt_snap = self._get_wt_snapshot(snapshot_name)
wt_disk_id = wt_snap.Export()[0]
# This export is a read-only shadow copy, needing to be copied
# to another disk.
wt_disk = self._conn_wmi.WT_Disk(WTD=wt_disk_id)[0]
wt_disk.Description = '%s-%s-temp' % (snapshot_name, wt_disk_id)
wt_disk.put()
src_path = wt_disk.DevicePath
self._pathutils.copy(src_path, dest_path)
wt_disk.Delete_()
except exceptions.x_wmi as wmi_exc:
err_msg = _('Failed to export snapshot %(snapshot_name)s '
'to %(dest_path)s.')
raise exceptions.ISCSITargetWMIException(
err_msg % dict(snapshot_name=snapshot_name,
dest_path=dest_path),
wmi_exc=wmi_exc)
