Stortools Message Monitoring; Component Manager Status Indicator; Manual Examination Of The Syslog File - Sun Microsystems StorEdge T3 Service Manual

8.3.3

StorTools Message Monitoring

If StorTools message monitoring is installed and running, it sends email messages
indicating problems. For example, in the case of the performance impact illustrated
above, the email might have the following data in it:
CODE EXAMPLE 8-10
Mar 07 18:33:22 T3a ISR1[1]: W: u1d9 SVD_PATH_FAILOVER: path_id = 0
Mar 07 18:33:22 T3a ISR1[1]: W: u1d8 SVD_PATH_FAILOVER: path_id = 0
Mar 07 18:33:22 T3a ISR1[1]: W: u1d7 SVD_PATH_FAILOVER: path_id = 0
Mar 07 18:33:22 T3a ISR1[1]: W: u1d6 SVD_PATH_FAILOVER: path_id = 0
Mar 07 18:33:22 T3a ISR1[1]: W: u1d5 SVD_PATH_FAILOVER: path_id = 0
Mar 07 18:33:22 T3a ISR1[1]: W: u1d4 SVD_PATH_FAILOVER: path_id = 0
In this example, this data was pulled by StorTools message monitoring from the
remote host log file that the Sun StorEdge T3 array sent syslog entries to. StorTools
message monitoring was run on that host and scanned the log looking for array log
file messages of a warning or error class. The data in the example above indicates
that drives u1d4-9 in the u1ctr controller completed a path failover from loop 1 (path
0) to loop 2 (path 1). This means that a hard failure or a threshold count was
exceeded on the u1l1 loop. At this time, drives u1d4-9 are being serviced by the
u1ctr only through the u1l2 loop. This is a good indication that there has been some
kind of failure in the u1l1 interconnect card, the u1ctr controller, or one of the u1d1-
9 drives.
8.3.4

Component Manager Status Indicator

Component Manager only changes its state if there has been a change of status for a
FRU in a partner group. Unless a FRU has been marked as failed, missing or
disabled by the array firmware, no red highlighted FRU appears in the GUI display.
Most back-end loop problems do not change FRU status. The example failure
illustrated in Section 8.3.3 does not change the normal status displayed by the GUI.
If the array marks a FRU as failed, Component Manager displays that change in
status. That FRU becomes the first choice for removal and replacement.
8.3.5

Manual Examination of the syslog File

If neither StorTools message monitoring nor Component Manager are running, the
Sun StorEdge T3 and T3+ array CLI interface can be used to examine the unit's
syslog. Use either the cat or more command on the log file. Either command
outputs the complete log to the Telnet or Tip session screen. Alternatively, you can
Example StorTools Message Monitoring Email Message Data
Chapter 8 Diagnosing and Correcting FC-AL Loop Problems 8-13