NonStop Operating System Event Management Programming Manual

DBIOPROC Event Messages (ZDIO)
HP NonStop Operating System Event Management Programming Manual—520372-020
21-14
Messages
Conditional Token
Cause. The data read from the disk into the application buffer is inconsistent with the
expected overall checksum value of zero for structured blocks.
Effect. An error is returned to the client of the DBIOPROC, typically resulting in
recovery by the client file system by ending the Direct Bulk I/O session and reverting to
a normal I/O.
Recovery. Infrequent occurrence of this event does not need a recovery action. If the
underlying cause persists, an error is likely to occur during normal I/O and can result in
a more detailed error event generated by the input/output process (IOP). Frequent
occurrence of this event without corresponding IOP-generated error events could
indicate an improperly written application that affects its data buffer during a nowaited
I/O operation using the same buffer and might suggest that Direct Bulk I/O must be
disabled using SCF until the application problem is resolved.
7: ZDIO-EVT-STRUCTURED-RSN
A file-relative sector number within structured block data read from disk into the
application buffer was not as expected.
Token Description
ZEMS-TKN-XLDEV.NAME Primary subject token that specifies the logical device
name associated with the relevant I/O process.
Subject: ZEMS-TKN-XLDEVNAME and ZEMS-TKN-LDEVNUMBER
Potentially critical event: No
Action event: No
Message sender: DBIOPROC
TMDS collector: No
OSM/TSM collector: Yes
Unconditional Tokens
ZEMS-TKN-EVENTNUMBER token-type ZSPI-TYP-ENUM
ZEMS-TKN-LDEVNUMBER token-type ZSPI-TYP-INT2
ZDIO-TKN-EXPECTED-RSN token-type ZSPI-TYP-INT2
ZDIO-TKN-ACTUAL-RSN token-type ZSPI-TYP-INT2
ZDIO-TKN-INTERNAL-CALLER token-type ZSPI-TYP-INT
Conditional Token
ZEMS-TKN-XLDEVNAME token-type ZSPI-TYP-STRING
Event-Message Text
Structured RSN not as expected.