Docker:尽管在Ubuntu 19.01可启动USB

我对linux和docker还是很陌生,所以为这篇文章道歉!

我有一个带有Ubuntu 19.01持久数据存储的可启动USB。我使用官方docker安装指南中概述的步骤在此安装了docker。我在安装过程中遇到的问题与未安装推荐的软件包有关:

Recommended packages:
  aufs-tools cgroupfs-mount | cgroup-lite pigz

我尝试手动安装它们,但是收到以下消息:

sudo apt-get install aufs-tools
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package aufs-tools is not available,but is referred to by another package.
This may mean that the package is missing,has been obsoleted,or
is only available from another source

E: Package 'aufs-tools' has no installation candidate

无论如何,这些软件包不存在不会导致安装失败。此后,我运行了hello world示例,并看到以下错误:

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete 
Digest: sha256:8e3114318a995a1ee497790535e7b88365222a21771ae7e53687ad76563e8e76
Status: Downloaded newer image for hello-world:latest
docker: Error response from daemon: error creating aufs mount to /var/lib/docker/aufs/mnt/db076c46f5f437911f80b48a2a53b8be05759964c059ad2f6a1389c0de377627-init: mount target=/var/lib/docker/aufs/mnt/db076c46f5f437911f80b48a2a53b8be05759964c059ad2f6a1389c0de377627-init data=br:/var/lib/docker/aufs/diff/db076c46f5f437911f80b48a2a53b8be05759964c059ad2f6a1389c0de377627-init=rw:/var/lib/docker/aufs/diff/3292099914e3c5804fbc573e521b32204a3b0cfef49aa3988677539bbf490624=ro+wh,dio,xino=/dev/shm/aufs.xino: invalid argument.
See 'docker run --help'.

运行docker info时,得到以下输出(被截断):

 Storage Driver: aufs
  Root Dir: /var/lib/docker/aufs
  Backing Filesystem: overlayfs
  Dirs: 2
  Dirperm1 Supported: false

可以说基于上述输出,我的内核支持aufs吗?我试图通过运行grep aufs /proc/filesystems来确认这一点,并得到以下信息:

nodev aufs

当我在根目录上运行df -Th /var/lib/docker时,我得到:

Filesystem     Type     Size  Used Avail Use% Mounted on
/cow           overlay  227G  4.7G  211G   3% /

基于以上概述的所有内容,我不知道为什么会看到Error response from daemon: error creating aufs mount错误?

我只能通过将--storage-driver=devicemapper附加到/lib/systemd/system/docker.service文件中来使docker工作,例如:

ExecStart=/usr/bin/dockerd --storage-driver=devicemapper -H fd://

mingmingpi2009 回答:Docker:尽管在Ubuntu 19.01可启动USB

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