lltstat shows the heartbeat status as offline in Veritas Storage Foundation HA for Windows
Article ID: 100019311
Updated On:
Description
Error Message
For a node with 2 LLT links, the engine_A.log at %VCS_HOME%/log would report the below error
VCS WARNING V-16-1-11141 LLT heartbeat link status changed. Previous status =UNKNOWN; Current status =Adapter0, DOWN, Adapter1, DOWN
OR
VCS WARNING V-16-1-11141 LLT heartbeat link status changed. Previous status =Adapter0, UP, Adapter1, UP; Current status =Adapter0, DOWN, Adapter1, DOWN
Cause
LLT (Low Latency Protocol) along with GAB (Global Atomic Broadcast) are the "heartbeat" protocols for Veritas Clustering.
lltstat, a command line tool is available to identify the status of the LLT/Heartbeat links.
If lltstat indicates that the other node is down, it may indicate one of the following:
- There is an error in llttab.txt.
- There is an error in llthosts.txt.
- There is a problem with the network connection between the heartbeat NICs. This is commonly due to a misconfiguration with the VLANs of the network switch.
Resolution
It is possible to test network connectivity between the heartbeat NICs by following these steps.
1. Assign an IP address to the heartbeat NICs on both nodes and attempt to ping the heartbeat NICs from each node.
2. Assign the heartbeat NICs to a different subnet from the public network and attempt to ping the heartbeat NICs from each node.
NOTE: The reason for using a different subnet mask is to prevent ICMP from travelling across the public network, invalidating the test.
If the pings fail, this indicates that there is a fundamental problem with network connectivity.
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