Extending an LV | LinuC Level 1 101 Exam original practice question

1.05.1Basic

Add 10 GiB from free vgdata space to /dev/vgdata/lvlogs.

Filesystem expansion is a separate step in this question.

Which command extends the LV itself?

Hint 1: Focus on the requirement

Choose the namespace containing special files through which programs open devices.

Hint 2: Key terms

Review the short hardware and kernel-interface definitions before comparing the choices.

/dev: The directory containing character and block device nodes.
Device node: A special file identifying a kernel device with major and minor numbers.
udev: A system that creates and updates device nodes from events.

Detailed explanation

Incorrect/sys

Incorrect. lvreduce shrinks an LV.

Correct/dev

Incorrect. vgextend adds PVs to a VG and does not resize an LV directly.

Incorrect/proc

Incorrect. resize2fs changes an ext filesystem, not the LV allocation.

Incorrect/var

Correct. lvextend -L +10G adds 10 GiB to the LV.

An example you can run in a temporary verification environment.

stat -c '%F %n' /dev/null /dev/zero

character special file /dev/nullと/dev/zero

Environment: Linux /dev / 読み取り操作
Prefer read-only inspection or a disposable system when testing hardware commands.
Device visibility and module behavior depend on the host and virtualization environment.

Foundation review

The access node in /dev differs from descriptive attributes in sysfs.

Inspect node type and permissions before opening a device.

Question IDKL-101-555

EnvironmentLinux /dev / 読み取り操作

Last technical review2026-08-13

More practice in this area