Adding or removing LLT links without restarting LLT

[해리]

https://www.veritas.com/support/en_US/article.000038668

Problem

Adding or removing LLT links without restarting LLT or editing /etc/llttab

Cause

By default, VCS interconnect requires at least 2 primary LLT links configured. Before replacing any existing LLT link, make sure all the primary LLT links are online and connected.

# lltconfig -a list

Solution

Adding and then removing an existing LLT link without restarting LLT or editing /etc/llttab.

 

To add a Device to existing LLT config:

# lltconfig -t <device tag> -d <device>

 

To remove a LLT device from a running node:

# lltconfig -u <devicetag>

  

The following example replaces bge2 LLT interface with bge3 on a Solaris 10 node running VCS 5.0:

# lltconfig -t bge3 -d /dev/bge:3

# lltconfig -u bge2

 

If bge2 is the only LLT link or the last LLT link in the cluster, then lltconfig -u would fail with the following error:

# lltconfig -u bge2

LLT lltconfig ERROR V-14-2-15020 PUNLINK bge1 failed: Device busy

 

Note: unconfiguring one LLT link can put the node into “Jeopardy membership” when the cluster use 2 LLT links. Service groups running on the node are placed in autodisabled state and cannot fail over if the node faults until the Jeopardy membership is cleared or autodisabled state is cleared.

 

To make the LLT link change permanent, edit the VCS LLT table /etc/llttab on all corresponding nodes.