我在RHEL机器上也遇到了这个问题。在堆栈溢出和docker-hub社区中，我没有找到任何合适的解决方案。 如果您在执行以下命令后仍面临此问题:

Docker系统全部修剪

最终奏效的解决方案:

docker info To check current docker storage driver Mine was : Storage Driver: devicemapper; If you have storage driver as overlay2 nothing to worry about. Solution will still work for you. df -h This is to check the available file systems on machine and the path where they are mounted. Two mounted path to have a note: /dev/mapper/rootvg-var 7.6G 1.2G 6.1G 16% /var /dev/mapper/rootvg-apps 60G 9.2G 48G 17% /apps Note- By default docker storage path is /var/lib/docker. It has available space ~6 GB and hence all the space related issues. So basically, I have to move default storage to some other storage where available space is more. For me its File sysyem path '/dev/mapper/rootvg-apps' which is mounted on /apps. Now task is to move /var/lib/docker to something like /apps/newdocker/docker. mkdir /apps/newdocker/docker chmod -R 777 /apps/newdocker/docker Update docker.serive file on linux which resides under: /usr/lib/systemd/system vi /usr/lib/systemd/system/docker.service if storage device is devicemapper , comment existing ExecStart line and add below under [Service]: ExecStart= ExecStart=/usr/bin/dockerd -s devicemapper --storage-opt dm.fs=xfs --storage-opt dm.basesize=40GB -g /apps/newdocker/docker --exec-opt native.cgroupdriver=cgroupfs Or if storage device is overlay2: just add -g /apps/newdocker/docker in the existing ExexStart statement. Something like ExecStart=/usr/bin/dockerd -g /apps/newdocker/docker -H fd:// --containerd=/run/containerd/containerd.sock rm -rf /var/lib/docker (It will delete all existing docker data) systemctl stop docker ps aux | grep -i docker | grep -v grep If no output has been produced by the above command, reload systemd daemon by below command. systemctl daemon-reload systemctl start docker docker info Check out the Data Space Available: 62.15GB after mouting to docker to new File system. DONE

我在RHEL机器上也遇到了这个问题。在堆栈溢出和docker-hub社区中，我没有找到任何合适的解决方案。 如果您在执行以下命令后仍面临此问题:

Docker系统全部修剪

最终奏效的解决方案:

docker info To check current docker storage driver Mine was : Storage Driver: devicemapper; If you have storage driver as overlay2 nothing to worry about. Solution will still work for you. df -h This is to check the available file systems on machine and the path where they are mounted. Two mounted path to have a note: /dev/mapper/rootvg-var 7.6G 1.2G 6.1G 16% /var /dev/mapper/rootvg-apps 60G 9.2G 48G 17% /apps Note- By default docker storage path is /var/lib/docker. It has available space ~6 GB and hence all the space related issues. So basically, I have to move default storage to some other storage where available space is more. For me its File sysyem path '/dev/mapper/rootvg-apps' which is mounted on /apps. Now task is to move /var/lib/docker to something like /apps/newdocker/docker. mkdir /apps/newdocker/docker chmod -R 777 /apps/newdocker/docker Update docker.serive file on linux which resides under: /usr/lib/systemd/system vi /usr/lib/systemd/system/docker.service if storage device is devicemapper , comment existing ExecStart line and add below under [Service]: ExecStart= ExecStart=/usr/bin/dockerd -s devicemapper --storage-opt dm.fs=xfs --storage-opt dm.basesize=40GB -g /apps/newdocker/docker --exec-opt native.cgroupdriver=cgroupfs Or if storage device is overlay2: just add -g /apps/newdocker/docker in the existing ExexStart statement. Something like ExecStart=/usr/bin/dockerd -g /apps/newdocker/docker -H fd:// --containerd=/run/containerd/containerd.sock rm -rf /var/lib/docker (It will delete all existing docker data) systemctl stop docker ps aux | grep -i docker | grep -v grep If no output has been produced by the above command, reload systemd daemon by below command. systemctl daemon-reload systemctl start docker docker info Check out the Data Space Available: 62.15GB after mouting to docker to new File system. DONE

不要只运行docker prune命令。它将删除所有的docker网络、容器和映像。所以你可能最终也会丢失重要的数据。

错误显示“设备上没有剩余空间”，所以我们只需要释放一些空间。

腾出空间最简单的方法就是删除悬空的图像。

当旧创建的图像不被使用时，这些图像被称为悬空图像或有一些缓存图像，以及你可以删除。

使用下面的命令。 列出所有悬挂图像。

docker images -f "dangling=true" -q

按映像id删除映像。

docker rmi IMAGE_ID

这样你就可以腾出一些空间，重新开始使用docker了:)

目前的最佳实践是:

docker system prune

在接受结果之前，请注意该命令的输出:

WARNING! This will remove:
  - all stopped containers
  - all networks not used by at least one container
  - all dangling images
  - all dangling build cache

Are you sure you want to continue? [y/N]

换句话说，继续执行这个命令是永久的。请记住，最佳实践是将停止的容器视为短暂的，即您应该使用Docker设计您的工作，不要保留这些停止的容器。如果你不主动调试容器，你可以考虑在运行时使用——rm标志。

请务必阅读这个答案，回复:卷

如果docker系统修剪不适合你，你可能也会对这个答案感兴趣。

那么多关于修剪声明的帖子。因为这个命令确实会清理docker文件，如果实际存储空间被占用，它不会修复您的系统。对我来说，问题是服务器的存储空间太满了。因此，我有两个选择。

选项1:清理现有空间

运行别人说过的所有系统修剪命令。 df -H，剩下多少空间? 用du——block-size=M -a / | sort -n -r | head -n 20检查是什么占用了系统这么多的空间，这将显示20个最大的文件。 删除文件或将其移出系统。

选择2:获得更多空间

为硬盘驱动器增加更多空间，然后扩展。如果你像我一样只有一个HD，我必须挂载名为“gparted”的操作系统并扩展驱动器。

在我的案例中，安装ubuntu服务器18.04.1(出于某种奇怪的原因)创建了一个LVM逻辑卷，大小只有4gb，而不是750gb。 因此，当拉图像时，我会得到这个“设备上没有空间”错误。 解决方法很简单:

lvextend -l 100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv