0

删除容器时出现“设备上没有剩余空间”错误。

# docker rm orientdb1
Error response from daemon: Driver devicemapper failed to remove root filesystem ba18ea8014b6024eb738502612130244ff363b433f146102c64eb2eb0f3a321c: devmapper: Error saving transaction metadata: devmapper: Error creating metadata file: open /var/lib/docker/devicemapper/metadata/.tmp636968871: no space left on device

这是“df -kh”输出的一个片段。

Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root  3.8T  3.8T   20K 100% /

这是“du -ksh”输出的一个片段。这表明使用了3.8TB。

3.8T    /var/lib/docker

这是“码头工人信息”输出。

# docker info
Containers: 56
 Running: 8
 Paused: 0
 Stopped: 48
Images: 18
Server Version: 1.12.0
Storage Driver: devicemapper
 Pool Name: docker-253:0-1196768-pool
 Pool Blocksize: 65.54 kB
 Base Device Size: 10.74 GB
 Backing Filesystem: xfs
 Data file: /dev/loop0
 Metadata file: /dev/loop1
 Data Space Used: 24.51 GB
 Data Space Total: 107.4 GB
 Data Space Available: 20.48 kB
 Metadata Space Used: 29.18 MB
 Metadata Space Total: 2.147 GB
 Metadata Space Available: 20.48 kB
 Thin Pool Minimum Free Space: 10.74 GB
 Udev Sync Supported: true
 Deferred Removal Enabled: false
 Deferred Deletion Enabled: false
 Deferred Deleted Device Count: 0
 Data loop file: /var/lib/docker/devicemapper/devicemapper/data
 WARNING: Usage of loopback devices is strongly discouraged for 
 production use. Use `--storage-opt dm.thinpooldev` to specify a custom 
 block storage device.
 Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
  Library Version: 1.02.107-RHEL7 (2016-06-09)
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host overlay null
 Swarm: inactive
 Runtimes: runc
Default Runtime: runc
Security Options: seccomp
Kernel Version: 3.10.0-327.22.2.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 12
Total Memory: 251.7 GiB
Name: my-host1
ID: KTTY:PSTQ:YQSP:9KZJ:VSVU:DFUZ:CEMF:DYWQ:CA3I:6KUB:6J2J:D4NG
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
WARNING: bridge-nf-call-ip6tables is disabled
Insecure Registries:
 127.0.0.0/8

想从以下内容中了解 3.8 TB 是如何计算的（来自“docker info”的片段）

 Data Space Used: 24.51 GB
 Data Space Total: 107.4 GB
 Data Space Available: 20.48 kB
 Metadata Space Used: 29.18 MB
 Metadata Space Total: 2.147 GB
 Metadata Space Available: 20.48 kB
 Thin Pool Minimum Free Space: 10.74 GB

另外，我如何清理 /var/lib/docker 以获得一些可用空间。

4

2 回答 2

3

我相信磁盘空间数字适用于环回驱动程序和设备映射器在环回模式下使用的文件 /var/lib/docker/devicemapper/devicemapper/data。

要清理 docker，您可以docker system prune在较新的版本上运行。旧版本可以使用以下命令：

docker ps -aqf status=exited | xargs docker rm
docker images -qf dangling=true | xargs docker rmi

除此之外，您将需要遍历容器和图像docker stop，docker rm然后在容器docker rmi上和图像上。

于 2017-06-16T16:30:25.973 回答
0

要添加到 BMitch 的答案，您还可以使用类似的方法删除悬空卷以释放空间docker volume ls -f dangling=true | xargs docker volume rm

于 2020-09-29T19:13:03.190 回答