TWE (4) | Special files and drivers | Unix Manual Pages

twe%d: microcontroller not ready	The controller’s onboard CPU is not reporting that it is ready; this may be due to either a board or system failure. Initialisation has failed.
twe%d: no attention interrupt twe%d: can’t drain AEN queue twe%d: reset not reported twe%d: controller errors detected twe%d: can’t drain response queue twe%d: reset %d failed, trying again
	The controller is not responding correctly to the driver’s attempts to reset and initialise it. This process is retried several times.
twe%d: can’t initialise controller, giving up	Several attempts to reset and initialise the controller have failed; initialisation has failed and the driver will not attach to this controller.

twe%d: register window not available twe%d: can’t allocate register window twe%d: can’t allocate parent DMA tag twe%d: can’t allocate interrupt twe%d: can’t set up interrupt twe%d: can’t establish configuration hook
	A resource allocation error occurred while initialising the driver; initialisation has failed and the driver will not attach to this controller.
twe%d: can’t detect attached units	Fetching the list of attached units failed; initialisation has failed.
twe%d: error fetching capacity for unit %d twe%d: error fetching state for unit %d twe%d: error fetching descriptor size for unit %d twe%d: error fetching descriptor for unit %d twe%d: device_add_child failed twe%d: bus_generic_attach returned %d
	Creation of the disk devices failed, either due to communication problems with the adapter or due to resource shortage; attachment of one or more units may have been aborted.

A command was reported completed with a warning by the controller. The warning may be one of:

redundant/inconsequential request ignored failed to write zeroes to LBA 0 failed to profile TwinStor zones

A command was reported as failed by the controller. The failure message may be one of:

aborted due to system command or reconfiguration aborted access error access violation device failure controller error timed out invalid unit number unit not available undefined opcode request incompatible with unit invalid request firmware error, reset requested
	The command will be returned to the operating system after a fatal error.

twe%d: command failed submission - controller wedged	A command could not be delivered to the controller because the controller is unresponsive.
twe%d: AEN: <%s>

The controller has reported a change in status using an AEN (Asynchronous Event Notification). The following AENs may be reported:

queue empty soft reset degraded mirror controller error rebuild fail rebuild done incomplete unit initialisation done unclean shutdown detected drive timeout drive error rebuild started aen queue full
	AENs are also queued internally for use by management tools.

twe%d: error polling for signalled AENs	The controller has reported that one or more status messages are ready for the driver, but attempting to fetch one of these has returned an error.
twe%d: AEN queue overflow, lost AEN <%s>	A status message was retrieved from the controller, but there is no more room to queue it in the driver. The message is lost (but will be printed to the console).
twe%d: missing expected status bits %s twe%d: unexpected status bits %s
	A check of the controller’s status bits indicates an unexpected condition.
twe%d: host interrupt	The controller has signalled a host interrupt. This serves an unknown purpose and is ignored.
twe%d: command interrupt	The controller has signalled a command interrupt. This is not used, and will be disabled.
twe%d: controller reset in progress...	The controller is being reset by the driver. Typically this is done when the driver has determined that the controller is in an unrecoverable state.
twe%d: can’t reset controller, giving up	The driver has given up on resetting the controller. No further I/O will be handled.
controller reset done, %d commands restarted	The controller was successfully reset, and outstanding commands were restarted.