docker -/var/lib/docker/中docker目录结构的功能

Question

当我启动一个新的 docker daemon 时，docker 目录是这样的:

/var/lib/docker/├── aufs│   ├── diff│   ├── layers│   └── mnt├── containers├── graph├── init│   └── dockerinit-0.7.3├── linkgraph.db├── lxc-start-unconfined -> /usr/bin/lxc-start├── repositories-aufs└── volumes

正如标题所说，这个结构中每个目录的作用是什么？

Answer 1

我不知道所有文件的确切作用，所以我就从这个开始，让其他人添加自己的贡献，或者完善我的:

/var/lib/docker/
├── aufs                                       # Storage area for AUFS driver
│   ├── diff                                   # Branch directory of layer
│   ├── layers                                 # Infomation about docker layer
│   └── mnt                                    # Mount point of aufs, root of containers
├── containers                                 # Container configurations
│                                                (both LXC and Docker-specific)
├── graph                                      # Storage for the images
├── init
│   └── dockerinit-0.7.3                       # Used as /sbin/init in containers
├── linkgraph.db                               # SQLite database storing links
│                                                and names.
├── lxc-start-unconfined -> /usr/bin/lxc-start # When starting a privileged
│                                                container, this is used in
│                                                lieu of lxc-start, to evade
│                                                AppArmor confinement (which
│                                                matches by exact path).
├── repositories-aufs                          # repository infomation
└── volumes                                    # Storage for "anonymous" volumes
                                                 (those which are not bind-mounts)