Creating a fixed-size logical volume | LinuC Level 1 101 Exam original practice question

1.05.1Basic

Allocate 20 GiB from vgdata and create an LV named lvlogs.

Which command is appropriate?

Hint 1: Focus on the requirement

Select the virtual filesystem containing PID directories and runtime kernel information.

Hint 2: Key terms

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

Detailed explanation

Correct/proc

Incorrect. pvcreate initializes a PV.

Incorrect/dev

Incorrect. vgcreate creates a VG rather than an LV.

Incorrect/sys

Correct. lvcreate -L 20G -n lvlogs vgdata creates the requested LV.

Incorrect/media

Incorrect. lvs queries existing LVs and does not create one.

An example you can run in a temporary verification environment.

test -r /proc/cpuinfo -a -r /proc/meminfo -a -d /proc/$$ && printf 'procfs available
'

procfs available

Environment: Linux procfs / 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

procfs is dynamic runtime information, not a normal disk-backed directory.

Read cpuinfo or meminfo and avoid writes unless the setting is intentional.

Question IDKL-101-554

EnvironmentLinux procfs / 読み取り操作

Last technical review2026-08-13

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