OpenVMS Cluster Systems - OpenVMS Systems - HP

Entry Description
Cluster Troubleshooting
C.11 Analyzing Error-Log Entries for Port Devices
# The next two lines contain the entry type, the processor type (KA780), and the computer’s
SCS node name.
$ This line shows the name of the subsystem and the device that caused the entry and the
reason for the entry. The CI subsystem’s device PAA0 on MARS was powered down.
The next 15 lines contain the names of hardware registers in the port, their contents, and
interpretations of those contents. See the appropriate CI hardware manual for a description
of all the CI port registers.
% The UCB$B_ERTCNT field contains the number of reinitializations that the port driver can
still attempt. The difference between this value and UCB$B_ERTMAX is the number of
reinitializations already attempted.
& The UCB$B_ERTMAX field contains the maximum number of times the port can be
reinitialized by the port driver.
’ The UCB$W_ERRCNT field contains the total number of errors that have occurred on this
port since it was booted. This total includes both errors that caused reinitialization of the
port and errors that did not.
C.11.4 Error Recovery
The CI port can recover from many errors, but not all. When an error occurs from
which the CI cannot recover, the following process occurs:
Step Action
1 The port notifies the port driver.
2 The port driver logs the error and attempts to reinitialize the port.
3 If the port fails after 50 such initialization attempts, the driver takes it off line, unless the
system disk is connected to the failing port or unless this computer is supposed to be a
cluster member.
4 If the CI port is required for system disk access or cluster participation and all 50
reinitialization attempts have been used, then the computer bugchecks with a CIPORT-type
bugcheck.
Once a CI port is off line, you can put the port back on line only by rebooting the
computer.
C.11.5 LAN Device-Attention Entries
Example C–7 shows device-attention entries for the LAN. The left column gives
the name of a device register or a memory location. The center column gives
the value contained in that register or location, and the right column gives an
interpretation of that value.
Example C–7 LAN Device-Attention Entry
************************* ENTRY 80. **************************** !
ERROR SEQUENCE 26. LOGGED ON: SID 08000000
DATE/TIME 15-JAN-1994 11:30:53.07 SYS_TYPE 01010000 "
DEVICE ATTENTION KA630 #
SCS NODE: PHOBOS
NI-SCS SUB-SYSTEM, PHOBOS$PEA0: $
FATAL ERROR DETECTED BY DATALINK %
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Cluster Troubleshooting C–27