LIF migration is the ability to dynamically move logical interfaces from one physical port to another in a cluster, allowing you to migrate them to higher performing network ports or take nodes offline for maintenance while preserving data access. SAN LIFs do not support migrate in normal operation, as iSCSI and Fibre Channel instead use multipathing and ALUA to protect against network path failure. LIF migration is non-disruptive for NFS and for newer SMB protocol versions.
Step1: cluster1 > Configuration > Network -> select network interfaces
LIF1 - svm1_cifs_nfs_lif1 (cluster1-01 node, port e0c)
LIF2 - svm1_cifs_nfs_lif2 (cluster1-02 node, port e0c)
Now we are going to migrate lif "svm1_cifs_nfs_lif1 to cluster1-02,port e0d"
Svm1 uses DNS load balancing for it’s NAS LIFs, so we cannot predict in advance which of those two LIFs the host running,so in CLI we can determine which LIF is handling that traffic using lif statistics command,
Step 2: In the “Network” pane of System Manager, locate in the interface list the LIF which we want to migrate and note the current port assignment.
select the migrate option,
Select the destination node port, here it would be cluster1-02, port e0d
notice the Migrate Permanently check box in this window. If you check this box it indicates that the LIF’s home port should also be set to this new port value.
Migration is completed. Now we can check in the system manager, network interface tab,
The “Current Port” value shown for the LIF in the Network Interfaces list has changed to reflect the nodes’ new port assignment. The small red X next to the current port entry indicates that the LIF does not currently reside on it’s configured home port.
now send the LIF back to it’s home port,
The LIF migrates back to it’s home port, once again without disrupting IO's.
The “Current Port” value for the LIF returns to it’s original value in the Network Interfaces list, and the red X disappears to indicate that the LIF is back on it’s home port.
LIF Migration in CLI:
Step:1 Using the migrate command, migrate the LIF1 to cluster1-02, port e0d,
LIf1 is migrated to cluster1-02, port e0d,
Now revert back to it's home port using revert command,
Now LIF1 is back to it's home port.
That's it :)
Step1: cluster1 > Configuration > Network -> select network interfaces
LIF1 - svm1_cifs_nfs_lif1 (cluster1-01 node, port e0c)
LIF2 - svm1_cifs_nfs_lif2 (cluster1-02 node, port e0c)
Now we are going to migrate lif "svm1_cifs_nfs_lif1 to cluster1-02,port e0d"
Svm1 uses DNS load balancing for it’s NAS LIFs, so we cannot predict in advance which of those two LIFs the host running,so in CLI we can determine which LIF is handling that traffic using lif statistics command,
Step 2: In the “Network” pane of System Manager, locate in the interface list the LIF which we want to migrate and note the current port assignment.
select the migrate option,
now send the LIF back to it’s home port,
LIF Migration in CLI:
Step:1 Using the migrate command, migrate the LIF1 to cluster1-02, port e0d,
LIf1 is migrated to cluster1-02, port e0d,
Now revert back to it's home port using revert command,
That's it :)
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