The switchrcrelationship command reverses the roles of primary and secondary virtual disks in a stand-alone Metro Mirror or Global Mirror relationship when that relationship is in a consistent state.
Syntax
>>- svctask -- -- switchrcrelationship -- ----------------------> >-- -primary --+- master -+--+- rc_rel_id ---+----------------->< '- aux ----' '- rc_rel_name -'
Parameters
- -primary master | aux
- (Required) Specifies whether the master disk or the auxiliary disk is to be the primary.
- rc_rel_id | rc_rel_name
- (Required) Specifies the ID or the name of the relationship to switch.
Description
The switchrcrelationship command applies to a stand-alone relationship. It is rejected
if it is used to try to switch a relationship that is part of a consistency
group. It is normally issued to reverse the roles of the primary and secondary
virtual disk in a relationship perhaps as part of a failover process during
a disaster recovery event. Write access to the old primary disk is lost and
write access to the new primary disk is acquired. This command is successful
when the relationship is in a connected, consistent state, and when reversing
the direction of the relationship does not lead to a loss of consistency;
that is, when the relationship is consistent and synchronized. The relationship
must be in one of the following states in order for the switchrcrelationship command
to process correctly:
- ConsistentSynchronized
- ConsistentStopped and Synchronized
- Idling and Synchronized
An invocation example
svctask switchrcrelationship -primary master rccopy2
The resulting output
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