Open SCSI Integrator's Manual for NonStop S-Series Servers
The Open SCSI I/O Process (IOP)
Open SCSI Integrator’s Manual for NonStop Servers—422988-002
4-17
File-System (FESTATUS) Error-Code Values
28 FETOOMANY The IOP cannot process the I/O request at this time. 
When an application receives this error code in response 
to an operation, it should wait a small amount of time 
and retry the operation. The maximum number of I/O 
operations the IOP can process at any one time is 
specified by the NUMIO attribute of the SCF SCSI 
subsystem, and this error occurs if the current operation 
would cause the IOP to exceed that number.
32 FENOPOOLSPACE Check for one of the following causes:
•
The IOP encountered an error in allocating a needed 
memory segment.
•
A memory pool was not set up correctly.
•
The IOP could not initialize some control structures.
33 FENOIOBUFSPACE Check for one of the following causes:
•
The IOP could not obtain access to buffer memory.
•
Buffer memory could not be locked.
35 FENOIOCBSPACE Check for one of the following causes:
•
Could not obtain access to IOP control-block 
memory.
•
IOP control-block memory could not be locked.
66 FEDEVDOWN An operation was attempted on a device that is down.
104 FENORESPONSE This error code is returned if the controller or device is 
not responding to an I/O operation.
120 FEDATAPARITY A data transfer caused a parity error.
136 FEUNITOWN The operation finished with a status that indicates an 
ownership problem with the controller. The IOP should 
normally correct this problem and retry the operation. If 
this error code is returned, there might be an error with 
the controller.
156 FEIOPROTOCOLERR A SCSI protocol error occurred during an attempt to 
communicate with a device.
157 FEIOPROCERR The IOP detected an internal error or inconsistency.
160 FEINVALIDSTATE SCF attempted to stop an IOP that is kept open while 
handling another process.
179 FEBADFORMAT Check for one of the following causes:
•
The format of the WRITEREAD buffer header 
block is incorrect.
•
The format of the CCB is incorrect.
Table 4-6. File-System Error Codes and Their Meanings (page 2 of 3)
Error 
Code
Corresponding
FESTATUS Literal
Meaning or Error Cause










