A database server's ext4 filesystem is running out of space because the reserved block percentage is too high for the workload. The admin wants to reduce the reserved blocks from 5% to 1% to reclaim space for the database. Which command should be used?

debugfs -w -R 'set_super_value reserved_blocks 1' /dev/sdb1

An XFS filesystem is corrupted and xfs_repair fails with an error about the log being dirty. The admin has a recent backup. What is the best course of action?

Run xfs_repair -L /dev/sdb1 to clear the log and retry.

Restore from the backup immediately.

Mount the filesystem read-only and copy data off.

Run xfs_repair -n /dev/sdb1 to check without modifying.

Why is it important to have a backup before performing filesystem repairs?

Backups speed up the repair process

Repair tools can sometimes cause data loss

Backups prevent the filesystem from becoming dirty

LPI LPIC-2:Linux Engineer (201-450)

Domain 4Objective 2

203.2 Maintaining a Linux Filesystem (weight: 3) LPIC-2 Practice Questions (Page 1)

Part of the Topic 203: Filesystem and Devices domain, which makes up ~10% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 36 practice questions to prepare you well beyond it. (estimate)

36questions here

8free pages

13concepts

13 Concepts in This Objective

Filesystem maintenance overview
Checking filesystem integrity with fsck
Understanding filesystem states and dirty flags
Forcing filesystem checks
Using tune2fs to adjust filesystem parameters
Using dumpe2fs to display filesystem information
Using debugfs for interactive filesystem debugging
Checking and repairing XFS filesystems
Checking and repairing btrfs filesystems
Monitoring filesystem health and errors
Managing filesystem journaling
Handling filesystem full and inode exhaustion
Performing filesystem maintenance safely

Questions 1–5

1application · medium
A database server's ext4 filesystem is running out of space because the reserved block percentage is too high for the workload. The admin wants to reduce the reserved blocks from 5% to 1% to reclaim space for the database. Which command should be used?
Select an answer first
2foundation · easy
Which tune2fs option sets the maximum number of mounts before a filesystem check is forced?
Select an answer first
3expert · hard
An XFS filesystem is corrupted and xfs_repair fails with an error about the log being dirty. The admin has a recent backup. What is the best course of action?
Select an answer first
4foundation · easy
Why is it important to have a backup before performing filesystem repairs?
Select an answer first
5foundation · easy
Which command forces a filesystem check on an ext4 filesystem regardless of its state?
Select an answer first

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203.2 Maintaining a Linux Filesystem (weight: 3) LPIC-2 Practice Questions (Page 1)

Questions 1–5

A database server's ext4 filesystem is running out of space because the reserved block percentage is too high for the workload. The admin wants to reduce the reserved blocks from 5% to 1% to reclaim space for the database. Which command should be used?

Which tune2fs option sets the maximum number of mounts before a filesystem check is forced?

An XFS filesystem is corrupted and xfs_repair fails with an error about the log being dirty. The admin has a recent backup. What is the best course of action?

Why is it important to have a backup before performing filesystem repairs?

Which command forces a filesystem check on an ext4 filesystem regardless of its state?

Keep studying — Topic 203: Filesystem and Devices