When you create a new replica, its replica object is mastered
by the replica at which you enter the mkreplica –export command.
You can change the mastership of the replica object using the chmaster command.
About this task
Mastership
of the replica object affects replica-modification activities (renaming
the replica, changing its properties, or deleting it). You must perform
these activities at the replica that masters the replica object.
A self-mastering replica masters its own replica object. A replica must be self-mastering for you
to perform some administrative operations on it (for example, raising the feature level). If each
site has its own administrator for DevOps Code ClearCase®
MultiSite, self-mastering replicas simplify
replica maintenance because each one can be maintained at its own site. However, you may want to
master all replica objects at a hub replica. In this case, you can transfer mastership to individual
sites at the request of the site administrator, and transfer mastership back to the hub replica
after the administrative operation has been completed.
Procedure
- Determine which replica masters the replica object, and
the host name of the replica's VOB server:
multitool describe replica:sanfran_hub@/vobs/dev
replica "sanfran_hub"
created 16-Aug-00.09:49:36 by Susan Goechs (susan.user@minuteman)
replica type: unfiltered
master replica: boston_hub@/vobs/dev
owner: susan
group: user
host: "goldengate"
...
- At the master replica, enter a chmaster command:
MINUTEMAN% multitool chmaster -c "make sanfran_hub replica self-mastering" sanfran_hub@/vobs/dev replica:sanfran_hub@/vobs/dev
Changed mastership of replica "sanfran_hub" to "sanfran_hub@/vobs/dev"
- At the old master replica, export an update packet to the
new master replica:
MINUTEMAN% multitool syncreplica –export –fship sanfran_hub@/vobs/dev
Generating synchronization packet
/opt/devops/clearcase/shipping/ms_ship/outgoing/sync_boston_hub_1 6-Aug-00.16.15.57_6389_1
- shipping order file is
/opt/devops/clearcase/shipping/ms_ship/outgoing/sh_o_sync_boston_ hub_16-Aug-00.16.15.57_6389_1
Attempting to forward/deliver generated packets...
-- Forwarded/delivered packet
/opt/devops/clearcase/shipping/ms_ship/outgoing/sync_boston_hub_1 6-Aug-00.16.15.57_6389_1
- At the new master replica, import the packet:
GOLDENGATE% multitool syncreplica –import –receive
Applied sync. packet
/opt/devops/clearcase/shipping/ms_ship/incoming/sync_boston_hub_1 6-Aug-00.16.15.57_6389_1 to VOB /net/goldengate/vobstg/dev.vbs
- At the new master replica, verify that mastership has been
received:
GOLDENGATE% multitool describe replica:sanfran_hub@/vobs/dev
replica "sanfran_hub"
created 16-Aug-00.09:49:36 by Susan Goechs (susan.user@minuteman)
replica type: unfiltered
master replica: sanfran_hub@/vobs/dev
...