Skip to main content
ONTAP MetroCluster

Reassign the root aggregate disks to the new MetroCluster IP controller module

Contributors netapp-aoife
PDFs

Reassign the root aggregate disks to the new controller module using the system IDs that you gathered earlier.

About this task

The old system IDs were identified in Gather information before the upgrade.

You perform the steps in Maintenance mode.

Note Root aggregate disks are the only disks that must be reassigned during the controller upgrade process. Disk ownership of data aggregates is handled as part of the switchover/switchback operation.
Steps

  1. Boot the system to Maintenance mode:

    boot_ontap maint

  2. Display the disks on node_B_1-new from the Maintenance mode prompt:

    disk show -a

    Caution Before you proceed with disk reassignment, verify that the pool0 and pool1 disks that belong to the node's root aggregate are displayed in the disk show output. In the following example, the output lists the pool0 and pool1 disks owned by node_B_1-old.

    The command output shows the system ID of the new controller module (1574774970). However, the old system ID (537403322) still owns the root aggregate disks. This example doesn't show drives owned by other nodes in the MetroCluster configuration.

    *> disk show -a
Local System ID: 1574774970
DISK                  OWNER                 POOL   SERIAL NUMBER   HOME                  DR HOME
------------          ---------             -----  -------------   -------------         -------------
prod3-rk18:9.126L44   node_B_1-old(537403322)  Pool1  PZHYN0MD     node_B_1-old(537403322)  node_B_1-old(537403322)
prod4-rk18:9.126L49   node_B_1-old(537403322)  Pool1  PPG3J5HA     node_B_1-old(537403322)  node_B_1-old(537403322)
prod4-rk18:8.126L21   node_B_1-old(537403322)  Pool1  PZHTDSZD     node_B_1-old(537403322)  node_B_1-old(537403322)
prod2-rk18:8.126L2    node_B_1-old(537403322)  Pool0  S0M1J2CF     node_B_1-old(537403322)  node_B_1-old(537403322)
prod2-rk18:8.126L3    node_B_1-old(537403322)  Pool0  S0M0CQM5     node_B_1-old(537403322)  node_B_1-old(537403322)
prod1-rk18:9.126L27   node_B_1-old(537403322)  Pool0  S0M1PSDW     node_B_1-old(537403322)  node_B_1-old(537403322)
.
.
.

  3. Reassign the root aggregate disks on the drive shelves to the new controllers.

    If you are using ADP…​

    Then use this command…​

    Yes

    disk reassign -s <old-sysid> -d <new-sysid> -r <dr-partner-sysid>

    No

    disk reassign -s <old-sysid> -d <new-sysid>

  4. Reassign the root aggregate disks on the drive shelves to the new controllers:

    disk reassign -s <old-sysid> -d <new-sysid>

    The following example shows reassignment of drives in a non-ADP configuration:

    *> disk reassign -s 537403322 -d 1574774970
Partner node must not be in Takeover mode during disk reassignment from maintenance mode.
Serious problems could result!!
Do not proceed with reassignment if the partner is in takeover mode. Abort reassignment (y/n)? n

After the node becomes operational, you must perform a takeover and giveback of the HA partner node to ensure disk reassignment is successful.
Do you want to continue (y/n)? y
Disk ownership will be updated on all disks previously belonging to Filer with sysid 537403322.
Do you want to continue (y/n)? y

  5. Verify that the disks of the root aggregate are correctly reassigned:

    disk show

    storage aggr status

    *> disk show
Local System ID: 537097247

  DISK                    OWNER                    POOL   SERIAL NUMBER   HOME                     DR HOME
------------              -------------            -----  -------------   -------------            -------------
prod03-rk18:8.126L18 node_B_1-new(537097247)  Pool1  PZHYN0MD        node_B_1-new(537097247)   node_B_1-new(537097247)
prod04-rk18:9.126L49 node_B_1-new(537097247)  Pool1  PPG3J5HA        node_B_1-new(537097247)   node_B_1-new(537097247)
prod04-rk18:8.126L21 node_B_1-new(537097247)  Pool1  PZHTDSZD        node_B_1-new(537097247)   node_B_1-new(537097247)
prod02-rk18:8.126L2  node_B_1-new(537097247)  Pool0  S0M1J2CF        node_B_1-new(537097247)   node_B_1-new(537097247)
prod02-rk18:9.126L29 node_B_1-new(537097247)  Pool0  S0M0CQM5        node_B_1-new(537097247)   node_B_1-new(537097247)
prod01-rk18:8.126L1  node_B_1-new(537097247)  Pool0  S0M1PSDW        node_B_1-new(537097247)   node_B_1-new(537097247)
::>
::> aggr status
           Aggr          State           Status                Options
aggr0_node_B_1           online          raid_dp, aggr         root, nosnap=on,
                                         mirrored              mirror_resync_priority=high(fixed)
                                         fast zeroed
                                         64-bit
What's next?

Boot the new controllers and restore LIF configuration.