Dell PowerVault 51F (8P Fibre Channel Switch) - Manual (Page 146)

A-8 Installation and Troubleshooting Guide
Figure A-2. MQ-QWRITE Error Example
The most notable parameters are:
•
The ID of the task that attempted to send the message ( tTimers in Figure A-2)
•
The queue ID ( 0x103d1d20 in Figure A-2)
•
The message pointer ( 0x103fd3d0 in Figure A-2)
The following commands should be executed, and their output, together with the
complete message log should be used when analyzing the error.
NOTE: Some of these commands can only be run from the root account.
Table A-3 describes MQ-QWRITE commands for gathering errors.
Dell_FC_Switch# 0x103fce60 (tTimers): Oct 14 11:07:43
Error MQ-QWRITE, 1, mqWrite failed,
queue = 0x103d1d20, msg = 0x103fd3d0,
errno = 0x3d0002
Traceback:
_mqWrite+0x44 (0x10065864)
_mPathAllShow+0x1158 (0x10078498)
Table A-3. Commands to Gather MQ-QWRITE
Error Information
Command Description
i Lists all the current tasks in the system. Most tasks
should be in "READY" or "PEND" state. If any task is in
"SUSPEND" state, then a task trace of that task
should be run using the
tt command.
tt <task name> Shows the stack trace of the task.
show <queue ID> Shows information about the queue that overflowed.
d <msg
pointer>,2,4
Shows the content of the message.
fspfShow Shows FSPF task’s queue ID.
portSemShow Shows tasks waiting on port semaphores.
spy 5 Shows per-task microprocessor utilization. This com-
mand displays a report every five seconds. At least
two reports should be printed, since the first one will
indicate that all the microprocessor is used by the
shell.