A GFS2 cluster is experiencing frequent lock timeouts. The administrator suspects that the DLM is not recovering properly after a node failure. Which action should be taken to diagnose the issue?

Use dlm_tool to dump lock states and check for stuck locks.

Reboot all nodes to reset the DLM.

Increase the journal size to reduce lock timeouts.

Run fsck.gfs2 to check for file system corruption.

An administrator is troubleshooting a GFS2 cluster where one node is repeatedly evicted from the cluster. The logs show DLM recovery events and 'dlm_scand' warnings. What is the most likely cause?

The node is using a different lock mode than the other nodes, causing a conflict that forces eviction.

The GFS2 journal is corrupted, so the DLM evicts the node to prevent data corruption.

The node is failing to respond to DLM heartbeats due to network latency or packet loss, causing the DLM to declare it dead and trigger recovery.

The file system is full, so the DLM cannot allocate lock resources and evicts nodes to free space.

LPI LPIC-3 High Availability and Storage Clusters

Domain 2Objective 3

362.3 Clustered File Systems (weight: 4) LPIC-3-HIGH-AVAILABILITY Practice Questions (Page 1)

Part of the Topic 362: High Availability Cluster Storage domain, which makes up ~26% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~9–16 in this domain), expect 3–5 from this objective — we provide 24 practice questions to prepare you well beyond it. (estimate)

24questions here

5free pages

6concepts

Questions 1–5

1foundation · easy
Which command is used to increase the size of an existing GFS2 file system after the underlying device has been expanded?
Select an answer first
2foundation · easy
Which file is the main configuration file for the O2CB cluster stack?
Select an answer first
3expert · medium
A GFS2 cluster is experiencing frequent lock timeouts. The administrator suspects that the DLM is not recovering properly after a node failure. Which action should be taken to diagnose the issue?
Select an answer first
4foundation · easy
Which service is responsible for starting and stopping the O2CB cluster stack on a node?
Select an answer first
5application · medium
An administrator is troubleshooting a GFS2 cluster where one node is repeatedly evicted from the cluster. The logs show DLM recovery events and 'dlm_scand' warnings. What is the most likely cause?
Select an answer first

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362.3 Clustered File Systems (weight: 4) LPIC-3-HIGH-AVAILABILITY Practice Questions (Page 1)

Questions 1–5

Which command is used to increase the size of an existing GFS2 file system after the underlying device has been expanded?

Which file is the main configuration file for the O2CB cluster stack?

A GFS2 cluster is experiencing frequent lock timeouts. The administrator suspects that the DLM is not recovering properly after a node failure. Which action should be taken to diagnose the issue?

Which service is responsible for starting and stopping the O2CB cluster stack on a node?

An administrator is troubleshooting a GFS2 cluster where one node is repeatedly evicted from the cluster. The logs show DLM recovery events and 'dlm_scand' warnings. What is the most likely cause?

Keep studying — Topic 362: High Availability Cluster Storage