def perform_unit_remove_for_s390(device_number, target_wwn, lun): """Write the LUN to the port's unit_remove attribute.""" # If LUN scanning is turned off on systems following the s390, or s390x # architecture LUNs need to be removed from the configuration using the # unit_remove call. The unit_remove call may fail if the LUN is not # part of the configuration anymore. This may be an expected situation. # For exmple, if LUN scanning is turned on. # This method will thus only log a warning message in case the # unit_remove call fails. LOG.debug( "perform unit_remove for s390: device_number=(%(device_num)s) " "target_wwn=(%(target_wwn)s) target_lun=(%(target_lun)s)", { 'device_num': device_number, 'target_wwn': target_wwn, 'target_lun': lun }) zfcp_device_command = ("/sys/bus/ccw/drivers/zfcp/%s/%s/unit_remove" % (device_number, target_wwn)) try: linuxscsi.echo_scsi_command(zfcp_device_command, lun) except processutils.ProcessExecutionError as exc: LOG.warn( _LW("unit_remove call failed; exit code (%(code)s), " "stderr (%(stderr)s)"), { 'code': exc.exit_code, 'stderr': exc.stderr })
def perform_unit_add_for_s390(device_number, target_wwn, lun): """Write the LUN to the port's unit_add attribute.""" # NOTE If LUN scanning is turned off on systems following the s390, # or s390x architecture LUNs need to be added to the configuration # using the unit_add call. The unit_add call may fail if a target_wwn # is not accessible for the HBA specified by the device_number. # This can be an expected situation in multipath configurations. # This method will thus only log a warning message in case the # unit_add call fails. LOG.debug( "perform unit_add for s390: device_number=(%(device_num)s) " "target_wwn=(%(target_wwn)s) target_lun=(%(target_lun)s)", { 'device_num': device_number, 'target_wwn': target_wwn, 'target_lun': lun }) zfcp_device_command = ("/sys/bus/ccw/drivers/zfcp/%s/%s/unit_add" % (device_number, target_wwn)) try: linuxscsi.echo_scsi_command(zfcp_device_command, lun) except processutils.ProcessExecutionError as exc: LOG.warn( _LW("unit_add call failed; exit code (%(code)s), " "stderr (%(stderr)s)"), { 'code': exc.exit_code, 'stderr': exc.stderr })
def perform_unit_remove_for_s390(device_number, target_wwn, lun): """Write the LUN to the port's unit_remove attribute.""" # If LUN scanning is turned off on systems following the s390, or s390x # architecture LUNs need to be removed from the configuration using the # unit_remove call. The unit_remove call may fail if the LUN is not # part of the configuration anymore. This may be an expected situation. # For exmple, if LUN scanning is turned on. # This method will thus only log a warning message in case the # unit_remove call fails. LOG.debug("perform unit_remove for s390: device_number=(%(device_num)s) " "target_wwn=(%(target_wwn)s) target_lun=(%(target_lun)s)", {'device_num': device_number, 'target_wwn': target_wwn, 'target_lun': lun}) zfcp_device_command = ("/sys/bus/ccw/drivers/zfcp/%s/%s/unit_remove" % (device_number, target_wwn)) try: linuxscsi.echo_scsi_command(zfcp_device_command, lun) except processutils.ProcessExecutionError as exc: LOG.warn(_LW("unit_remove call failed; exit code (%(code)s), " "stderr (%(stderr)s)"), {'code': exc.exit_code, 'stderr': exc.stderr})
def perform_unit_add_for_s390(device_number, target_wwn, lun): """Write the LUN to the port's unit_add attribute.""" # NOTE If LUN scanning is turned off on systems following the s390, # or s390x architecture LUNs need to be added to the configuration # using the unit_add call. The unit_add call may fail if a target_wwn # is not accessible for the HBA specified by the device_number. # This can be an expected situation in multipath configurations. # This method will thus only log a warning message in case the # unit_add call fails. LOG.debug("perform unit_add for s390: device_number=(%(device_num)s) " "target_wwn=(%(target_wwn)s) target_lun=(%(target_lun)s)", {'device_num': device_number, 'target_wwn': target_wwn, 'target_lun': lun}) zfcp_device_command = ("/sys/bus/ccw/drivers/zfcp/%s/%s/unit_add" % (device_number, target_wwn)) try: linuxscsi.echo_scsi_command(zfcp_device_command, lun) except processutils.ProcessExecutionError as exc: LOG.warn(_LW("unit_add call failed; exit code (%(code)s), " "stderr (%(stderr)s)"), {'code': exc.exit_code, 'stderr': exc.stderr})