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Verifying the system ID change on an HA system
You must confirm the system ID change when you boot the replacement controller and then verify that the
change was implemented.
About this task
This procedure applies only to systems running ONTAP in an HA pair.
Step 1.
If the replacement controller is in Maintenance mode (showing the
mode and go to the LOADER prompt:
Step 2.
From the LOADER prompt on the replacement controller, boot the controller, entering
prompted to override the system ID due to a system ID mismatch:
Step 3.
Wait until the Waiting for giveback... message is displayed on the replacement controller console
and then, from the healthy controller, verify that the new partner system ID has been automatically
assigned.
Example
storage failover show
node1>
Node
------------
node1
node2
Step 4.
From the healthy controller, verify that any coredumps are saved:
a.
Change to the advanced privilege level:
You can respond
prompt appears (*>).
b.
Save any coredumps:
c.
Wait for savecore command to complete before issuing the giveback.You can enter the
following command to monitor the progress of the savecore command:
local-node-name partner savecore -s
d.
Return to the admin privilege level:
Step 5.
Give back the controller:
a.
From the healthy controller, give back the replaced controller's storage:
-ofnode replacement_node_name
The replacement controller takes back its storage and completes booting.
If you are prompted to override the system ID due to a system ID mismatch, you should enter
.
y
Note: If the giveback is vetoed, you can consider overriding the vetoes.
If giveback is vetoed
b.
After the giveback has been completed, confirm that the HA pair is healthy and that takeover is
possible:
The output from the
changed on partner message.
Step 6.
Verify that the expected volumes are present for each controller:
ThinkSystem DM3000x and DM5000x Hardware Installation and Maintenance Guide
62
Takeover
Partner
Possible
------------
--------
node2
false
node1
-
when prompted to continue into advanced mode. The advanced mode
Y
system node run -node local-node-name partner savecore
storage failover show
storage failover show
halt
State Description
-------------------------------------
System ID changed on partner (Old:
151759755, New: 151759706), In takeover
Waiting for giveback (HA mailboxes)
set -privilege advanced
set -privilege admin
command should not include the System ID
prompt, exit Maintenance
� >
if you are
y
boot_ontap
system node run -node
storage failover giveback
vol show -node node-name
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