Separate root and home logically inside one Btrfs filesystem.
Allow each tree to be mounted and snapshotted independently without adding fixed-size partitions.
Which Btrfs feature is most appropriate?
A Btrfs subvolume is an independent file tree within one filesystem and can be used as a separate mount and snapshot unit.
Detailed explanation
Correct. Subvolumes provide independent logical trees inside one Btrfs filesystem.
Incorrect. An MBR extended partition is a disk-partitioning construct.
Incorrect. VFAT long names are unrelated to Btrfs subvolumes.
Incorrect. A swap header identifies swap space.
Try it yourself
An example you can run in a temporary verification environment.
btrfs subvolume --helpExpected result
サブボリューム操作の一覧。作成や削除は行わないKey points
- Logical trees in one Btrfs filesystem
- They can be mounted separately
- They are snapshot units
Notes
- Environment: Btrfs公式ツールの一般仕様
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Read the scope first
Check whether the command acts on the current shell, a new process, an existing process, or a file.
Verify the observable result
Use the supplied command and compare the output with the expected result.