Docker aufs和devicemapper目录都存在

时间:2015-06-23 19:30:21

标签: docker diskspace device-mapper

我正在尝试清理服务器上的一些空间,发现/var/lib/docker/devicemapper Usage of /: 86.8% of 78.62GB Users logged in: 0 ncdu 1.10 ~ Use the arrow keys to navigate, press ? for help --- /var/lib/docker ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ /.. 35.3GiB [##########] /aufs 21.4GiB [###### ] /devicemapper 810.5MiB [ ] /tmp 188.3MiB [ ] /containers 96.3MiB [ ] /init 29.4MiB [ ] linkgraph.db 13.4MiB [ ] /graph 1.2MiB [ ] /execdriver 108.0KiB [ ] /volumes 36.0KiB [ ] /vfs 8.0KiB [ ] /trust 8.0KiB [ ] repositories-aufs 4.0KiB [ ] repositories-devicemapper 都存在。

docker info

由于您似乎只能同时启用一个,我有点困惑。当我运行root@bsc:/var/lib/docker/aufs# docker info Containers: 115 Images: 326 Storage Driver: devicemapper Pool Name: docker-253:1-1318913-pool Pool Blocksize: 65.54 kB Backing Filesystem: extfs Data file: /dev/loop0 Metadata file: /dev/loop1 Data Space Used: 15.67 GB Data Space Total: 107.4 GB Data Space Available: 10.96 GB Metadata Space Used: 25.83 MB Metadata Space Total: 2.147 GB Metadata Space Available: 2.122 GB Udev Sync Supported: false Data loop file: /var/lib/docker/devicemapper/devicemapper/data Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata Library Version: 1.02.82-git (2013-10-04) Execution Driver: native-0.2 Kernel Version: 3.13.0-36-generic Operating System: Ubuntu 14.04.2 LTS CPUs: 4 Total Memory: 7.798 GiB Name: bsc ID: HCND:CWXF:XVRP:OZ45:HDHS:LLNO:Z2T3:L4XZ:UE6N:AOTW:A5C5:PZ76 时,看起来我启用了devicemapper,而不是aufs:

/var/lib/docker/devicemapper

这是否意味着删除{{1}}目录是安全的?

1 个答案:

答案 0 :(得分:2)

看起来您的泊坞工曾经使用aufs作为存储后端,但切换到devicemapper。 (可能是升级docker包的结果)

如果您(或您的软件包管理器)更改了存储后端,则docker将不会转换现有容器和/或图像以使用新的存储后端。因此,您将看到一个空容器和图像列表。但文件将保留在那里。因此,只要您不需要其中的容器和图像,就可以安全地删除aufs目录。