NILFS will make snapshotting or versioning of the POSIX filesystem much familiar to you.

NILFS使得制作POSIX文件系统的快照或版本控制变得熟悉的多。

NILFS is a new implementation of a log-structured file system (LFS) supporting continuous snapshotting.

NILFS是日志结构文件系统(log - structured file system)的一个新的实现，其支持连续快照。

You may be familiar with snapshotting from Linux LVM; using snapshots, you can create an unchanging "view" of an existing filesystem, which comes in handy for backups.

您可能熟悉 Linux LVM 的快照；使用快照，您可以创建现有文件系统的不变“视图”，这对于备份很方便。