Veritas InfoScale™ 7.4.2 Virtualization Guide - Linux

To set the peerinact value dynamically using lltconfig command

1. Determine how long the migrating node is unresponsive in your environment.
2. If that time is less than the default LLT peer inactive timeout of 16 seconds, VCS operates normally.

   If not, increase the peer inactive timeout to an appropriate value on all the nodes in the cluster before beginning the migration.

   For example, to set the LLT peerinact timeout to 20 seconds, use the following command:

   # lltconfig -T peerinact:2000

   The value of the peerinact command is in .01 seconds.

3. Verify that peerinact has been set to 20 seconds:

   # lltconfig -T query

   Current LLT timer values (.01 sec units):
    heartbeat   = 50
    heartbeatlo = 100
    peertrouble = 200
    peerinact   = 2000
    oos         = 10
    retrans     = 10
    service     = 100
    arp         = 30000
    arpreq         = 3000
    Current LLT flow control values (in packets):
    lowwater  = 40

4. Repeat steps 2 to 3 on other cluster nodes.
5. Reset the value back to the default peerinact value using the lltconfig command after the migration is complete.

To make the LLT peerinact value persistent across reboots:

• Append the following line at the end of /etc/llttab file to set the LT peerinact value to 20 seconds:

  set-timer peerinact:2000

  After appending the above line, /etc/llttab file should appear similar to the following:

  # cat /etc/llttab
  set-node sys1
  set-cluster 1234
  link eth2 eth-00:15:17:48:b5:80 - ether - -
  link eth3 eth-00:15:17:48:b5:81 - ether - -
  set-timer peerinact:2000