OSI/AS SCF Reference Manual

OSI/AS Trace Facility
OSI/AS SCF Reference Manual—424121-001
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L5 PROV—L5 I/O Completion
Session ID
an internal field that shows a sequence number that is assigned to the connection by
this TAPS process.
File ID
an internal field that shows the TAPS file control block ID.
DCB Addr
shows the address of the buffer containing the data being written to a transport
subdevice.
FS Error
shows the Guardian file-system error returned initiating the write.
L5 PROV—L5 I/O Completion
This trace record is generated when session receives an I/O completion message. It
indicates that a write, writeread or read request to transport has completed.
If the completing I/O is a writeread (attach or connect), the count transferred will be 2.
If the completing I/O is a write, the count transferred is set to zero so that no data will be
included in the trace record. Note that write data also appears in an L5 Send TSDU. If
the data written was a fragment of a large TSDU, the next piece of data will be written
immediately following this I/O completion. Session will not reply to the original L5
request until the last piece has been written successfully.
If the completing I/O is a read, the incoming TSDU will be formatted and displayed
according to the SPDU types it contains. The format of L5 send TSDU and read
completion are the same.
If a read completes with a file-system error, the transport connection has been lost.
Normally, a provider abort is generated and sent to the L5 user. However, if the local
system closed transport, no error will be returned.
If a write completes with a file-system error, the error will be placed in the L5 reply to
the L5 user.
Subtype
L5 I/O Completion
SU Name
shows the name by which APS knows this connection.
08:20:07.550 >000.130 #72 TAPS L5 PROV
L5 I/O Completion Su Name #ZMF0021 Session ID 64
File ID %H00012278 Tag %H00000002 DCB Addr %H001ADEC6
Count Transferred 00002 FS Error 00000 MCW %HC000