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

be applied. For example, specify the auto failback as off after specifying the
checking interval to five minutes and executing. Then, when executing after
specifying the auto failback as on without specifying the checking interval, the
five minutes that were specified previously will be applied again.

Setting Up Intermittent Error Monitoring

You can set the intermittent error monitoring only when automatic failback 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 30. 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 in the number of error occurrence,
make sure that the condition shown in
Function on page 3-122
error is occurring in a path, you can use the execution results of the dlnkmgr
command's view operation.
The following shows an example of executing the command to set
intermittent error monitoring.
# /opt/DynamicLinkManager/bin/dlnkmgr set -iem on -intvl 20 -iemnum 2
To enable intermittent error monitoring, set it to on. Otherwise, set it to off.
When on is specified, you can use the -intvl and -iemnum parameters to
specify intermittent error conditions (the conditions used by the system to
determine whether an intermittent error is occurring). 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 30 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 3-25 Values for the error log collection level setting on page 3-124
and describes the values for the error log collection level setting.
is satisfied. To determine whether an intermittent
Creating an HDLM Environment
Hitachi Dynamic Link Manager User Guide (for Solaris(R))
Setting Up the Automatic Failback
lists
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