A Linux administrator is provisioning a new server that requires integrated volume management, filesystem-level snapshots, and data checksums for integrity, all without relying on separate tools like LVM or mdadm. Which filesystem format should the administrator choose to meet all these requirements natively?
btrfs
tmpfs
ext4
xfs
The correct answer is btrfs. Btrfs (B-tree File System) is a modern filesystem that includes integrated features like volume management (allowing it to span multiple devices), copy-on-write snapshots, and data/metadata checksums for self-healing and data integrity. XFS and ext4 are robust, high-performance journaling filesystems, but they do not have these specific features built-in; they would rely on external tools like LVM for volume management and snapshots, and mdadm for software RAID. Tmpfs is a temporary, RAM-based filesystem and is not suitable for persistent data storage, nor does it offer these advanced features.
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