Complete this task to modify the consistency group timeout value,
which determines the amount of time that I/O is withheld from updating a source
volume of a consistency group after an error occurs.
The consistency group timeout value (the
-extlongbusy timeout parameter)
is the time in seconds that a volume in a
Metro Mirror consistency
group stays unavailable after an error causes the suspension of a consistency
group operation if a consistency group is not received before the timeout
value. The consistency group timeout value enables automation software to
detect that an error has occurred and to issue a command to freeze all other
volumes of the consistency group. When an error is detected, a long-busy condition
occurs.
Perform the following step to modify the consistency group timeout
value. The example command in this task are shown in two formats. The first
format shows the type of information that the command requires. The second
format provides the command with declared values for the variables.
Issue the chlcu command to modify the consistency group
timeout value. Enter the chlcu command at the dscli command
prompt with the following parameters and variables: dscli>chlcu -dev storage_image_ID -extlongbusy timeout LCU_ID
Example
dscli>chlcu -dev IBM.1750-68FA120 -extlongbusy 3 00-0F