The switchrcconsistgrp command reverses the roles of the primary and secondary virtual disks (VDisks) in a Metro Mirror or Global Mirror consistency group when that consistency group is in a consistent state. All the relationships in the consistency group are affected by this change.
Syntax
>>- svctask -- -- switchrcconsistgrp -- ------------------------> >-- -primary --+- master -+--+- rc_consist_group_id ---+------->< '- aux ----' '- rc_consist_group_name -'
Parameters
- -primary master | aux
- (Required) Specifies whether the master or auxiliary side of the relationships in the group will become the primary VDisks.
- rc_consist_group_id | rc_consist_group_name
- (Required) Specifies the ID or name of the consistency group to switch.
Description
This
command applies to a consistency group. It is normally issued to reverse the
roles of the primary and secondary virtual disks in a consistency group, perhaps
as part of a failover process that is associated with a disaster
recovery event. Write access to the former primary VDisks is lost and write
access to the new primary VDisks is acquired. This command is successful when
the consistency group is in a connected, consistent state, and when reversing
the direction of the relationships would not lead to a loss of consistency,
for example, when the consistency group is consistent and synchronized. The
consistency group must be in one of the following states in order for the switchrcconsistgrp command
to process correctly:
- ConsistentSynchronized
- ConsistentStopped and Synchronized
- Idling and Synchronized
An invocation example
svctask switchrcconsistgrp -primary aux rccopy2
The resulting output
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