A GFS2 file system is mounted on a 4-node cluster. One node crashes. After the node reboots, it attempts to mount the file system but fails. The administrator sees 'journal recovery' messages in the logs. What is the most likely reason for the mount failure?

The other nodes have not yet completed journal recovery for the crashed node.

The crashed node's journal is corrupted and needs to be recreated.

The DLM is not running on the rebooted node.

The file system is full, preventing the journal from being replayed.

A company is comparing Lustre and GFS2 for a new high-performance computing cluster. The cluster will have 1000 compute nodes accessing a shared file system. Which file system is more suitable and why?

Lustre, because it is designed for large-scale parallel I/O with many clients.

GFS2, because it requires no dedicated metadata servers.

Lustre, because it provides stronger cache coherence than GFS2.

GFS2, because it provides better cache coherence for many nodes.

A company is evaluating file systems for a cluster of 8 servers that need to share a large dataset with frequent reads and occasional writes. The storage is a SAN. The team is considering GFS2 and AFS. Which factor is most important in choosing GFS2 over AFS?

GFS2 supports offline operation better than AFS.

GFS2 offers stronger cache coherence because it uses a DLM on shared storage.

GFS2 provides better wide-area performance than AFS.

GFS2 is easier to administer than AFS because it requires no client software.

A cluster administrator is setting up O2CB for the first time. After creating /etc/ocfs2/cluster.conf, the administrator runs 'service o2cb load'. The command fails with 'Cluster not found'. What is the most likely cause?

The file system is not mounted.

The O2CB kernel modules are not loaded.

The cluster name in cluster.conf does not match the one used in the load command.

An administrator is setting up an OCFS2 file system on a 4-node cluster. The nodes are configured with the O2CB stack. After creating the file system with mkfs.ocfs2, the administrator mounts it on all nodes. One node fails to mount, reporting 'mount.ocfs2: error while mounting /dev/sdb1'. What should the administrator check first?

Verify that the O2CB cluster stack is running and the node is a member of the cluster.

Run fsck.ocfs2 on the file system to repair any corruption.

Check that the file system is formatted with the correct block size for this node.

Ensure the node has a unique node number in /etc/ocfs2/cluster.conf.

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 3)

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 11–15

11expert · medium
A GFS2 file system is mounted on a 4-node cluster. One node crashes. After the node reboots, it attempts to mount the file system but fails. The administrator sees 'journal recovery' messages in the logs. What is the most likely reason for the mount failure?
Select an answer first
12application · medium
A company is comparing Lustre and GFS2 for a new high-performance computing cluster. The cluster will have 1000 compute nodes accessing a shared file system. Which file system is more suitable and why?
Select an answer first
13expert · medium
A company is evaluating file systems for a cluster of 8 servers that need to share a large dataset with frequent reads and occasional writes. The storage is a SAN. The team is considering GFS2 and AFS. Which factor is most important in choosing GFS2 over AFS?
Select an answer first
14application · medium
A cluster administrator is setting up O2CB for the first time. After creating /etc/ocfs2/cluster.conf, the administrator runs 'service o2cb load'. The command fails with 'Cluster not found'. What is the most likely cause?
Select an answer first
15application · medium
An administrator is setting up an OCFS2 file system on a 4-node cluster. The nodes are configured with the O2CB stack. After creating the file system with mkfs.ocfs2, the administrator mounts it on all nodes. One node fails to mount, reporting 'mount.ocfs2: error while mounting /dev/sdb1'. What should the administrator check first?
Select an answer first

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