HP Hitachi Dynamic Link Manager Software - Manual (Page 289)

# /opt/DynamicLinkManager/bin/dlnkmgr set -pchk on -intvl 10
To enable path health checking, specify on. Specify off otherwise. When you
specify on, you can use the -intvl parameter to specify the checking
interval. The value that was specified previously will be applied if the
checking interval is not specified. For example, specify the path health check
as off after specifying the checking interval as 15 minutes and executing.
Then, when executing after specifying the path health check as on without
specifying the checking interval, the 15 minutes that were specified
previously will be applied again.
Setting Up the Automatic Failback Function
When intermittent error monitoring is enabled and the number of error
occurrences is 2 or more, the following condition must be satisfied.
error-monitoring-interval >= checking-interval-for-automatic-
failbacks x number-of-times-an-error-is-to-occur-during-intermittent-
error-monitoring
If this condition is not satisfied, an error will occur and the warning message
KAPL01080-W will be output.
If this happens, change any of the following settings: the checking interval
for automatic failbacks, the intermittent error-monitoring interval, or the
number of times that the error needs to occur.
If you set the number of times that the error needs to occur to 1, the above
condition does not need to be satisfied.
The following is an example of using a command to enable automatic
failback:
# /opt/DynamicLinkManager/bin/dlnkmgr set -afb on -intvl 10
To enable automatic failback, specify on. Specify off otherwise. When you
specify on, you can use the -intvl parameter to specify the checking interval
can be specified with the -intvl parameter when on is specified. The value
that was specified previously will be applied if the checking interval is not
specified. For example, specify auto failback as off after specifying the
checking interval to five minutes and executing. Then, when executing after
specifying 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
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.
Creating an HDLM Environment
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Hitachi Dynamic Link Manager User Guide for Linux ®