docker使用问题总结

docker报【Error response from daemon: Error running DeviceCreate (createSnapDevice) dm_task_run failed】错,解决办法:
# systemctl stop docker.service
# thin_check /var/lib/docker/devicemapper/devicemapper/metadata

If there were no errors then proceed with:

# thin_check --clear-needs-check-flag /var/lib/docker/devicemapper/devicemapper/metadata
# systemctl start docker.service

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