Setting Up Intermittent Error Monitoring; Setting The Error Log Collection Level - Hitachi XP P9500 User Manual

Setting Up Intermittent Error Monitoring

Intermittent error monitoring is specifiable only when the automatic failback
function is enabled. To prevent an intermittent error from reducing I/O
performance, we recommend that you monitor intermittent errors when
automatic failback is enabled.
When intermittent error monitoring is enabled, you can specify intermittent
error conditions. The default value for the intermittent error-monitoring
interval is 210. The default value for the number of error occurrences is 3.
The system assumes that an intermittent error has occurred if the specified
number of times that the error needs to occur is reached during the specified
monitoring interval. A path that is assumed to have an intermittent error is
excluded from performing an automatic failback. Intermittent error
monitoring starts right when the path is recovered from the error by
performing an automatic failback. Monitoring is performed on each, individual
path.
When a value of 2 or more is specified for the number of times an error
needs to occur, make sure that the condition shown in
Automatic Failback Function on page 3-71
To determine whether a path is invalid for an automatic failback, you can use
the results of the dlnkmgr command's view operation.
The following is an example of setting up intermittent error monitoring by
using a command:
# /usr/DynamicLinkManager/bin/dlnkmgr set -iem on -intvl 20 -iemnum 2
on specifies that intermittent error monitoring is to be used. To disable
intermittent error monitoring, specify off. When you set this parameter to
on, you can specify intermittent error conditions by using the -intvl and -
iemnum parameters. Specify the monitoring interval for an intermittent error
in the -intvl parameter, and the number of times that the error needs to
occur in the -iemnum parameter. When these parameters are omitted, the
default values of 210 and 3 are used, respectively.

Setting the Error Log Collection Level

The error log (the HDLM manager log (dlmmgrn.log (n indicates a file
number from 1 to 16)) collection level can be set.
Table 3-15 Values for the Error Log Collection Level Setting on page 3-72
lists and describes values for the error log collection level setting.
0
1
3-72
Table 3-15 Values for the Error Log Collection Level Setting
Value
No error logs are collected.
All information for errors of the "Error" level or higher is
collected.
Creating an HDLM Environment
Hitachi Dynamic Link Manager User Guide (for AIX(R))
Setting Up the
is satisfied.
Description