Use
the chrcconsistgrp command to modify attributes
of an existing Metro Mirror, Global Mirror, or active-active consistency
group, such as changing the name of a consistency group.
Syntax
chrcconsistgrp [ { [ -namenew_name_arg ] | [ -cycleperiodsecondsperiod ] | [ -cyclingmode { none | multi } ] } ] [ { -global | -metro } ] { rc_consist_group_name | rc_consist_group_id }
Parameters
- -namenew_name_arg
- (Optional) Specifies the new name to assign
to the consistency group.
- -cycleperiodsecondsperiod
- (Optional) Specifies the cycle period in seconds. The minimum
cycle period value is 60 seconds, and the default is 300 seconds.
- This defines an optional cycle period that applies
to Global Mirror relationships with a cycling mode of multi.
A Global Mirror relationship using the multicycling_mode performs
a complete cycle each period. It might be provided for any relationship,
but cannot be used for none when considering Metro
or Global Mirror relationships.
- -cyclingmodenone | multi
- (Optional) Specifies the behavior of Global Mirror for this relationship.
- Specifying none, the default, gives identical behavior to Global Mirror in
previous versions of Lenovo Storage V7000.
- Specifying multi uses the cycling protocol.
To start a relationship with cycling_mode set to multi, change volumes must
be defined for the relationship. Note: The cycling_mode can only be changed when
the relationship is stopped and in consistent_stopped or
inconsistent_stopped states.
- -metro
- (Optional) Specifies the change in the consistency group's copy type and converts a Global
Mirror (with or without change volumes) relationship to a Metro Mirror relationship.
Remember: To use this parameter the consistency group must be stopped
(inconsistent_stopped, consistent_stopped, or
idling)
- -global
- (Optional) Specifies the change in the consistency group's copy type and converts a Metro Mirror
relationship to a Global Mirror relationship. This parameter is not mutually-exclusive with
-cyclingmode. If you do not specify -cyclingmode and the
relationship is Metro Mirror, the cycling_mode value is
none.
Remember: To use this parameter the
consistency group must be stopped (inconsistent_stopped,
consistent_stopped, or idling)
- rc_consist_group_name | rc_consist_group_id
- (Required) Specifies the ID or existing name of the consistency
group that you want to modify.
Description
This command modifies the specified attributes of the
supplied consistency group, one attribute at a time.
All parameters
are mutually-exclusive with the exception of the -cyclingmode,
which is mutually-exclusive with all parameters but -global.
Note: One of the optional parameters
must be specified.
A Global Mirror consistency group
with cycling mode set to multi requires that change
volumes are defined for the primary and secondary volumes of each
relationship in the group before it can be started.
For intersystem
relationships the;
- -cycleperiodseconds and -cyclingmode parameters
can only be specified when the two systems are connected. If the two
systems become disconnected while the command is being processed,
then the command might be completed with the change having been performed
at the system that received the task invocation only (and the other
system is updated upon re-connection).
For consistency groups that are
active-active,
you cannot change the copy type or cycling mode. This means you cannot
specify these parameters:
- -global
- -metro
- -cyclingmode
An invocation example to change a consistency group
name from called rc_testgrp to rctestone.
chrcconsistgrp -name rctestone rc_testgrp
The
resulting output:
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