{"action":"created","issue":{"url":"https://api.github.com/repos/docker/docker.github.io/issues/6267","repository_url":"https://api.github.com/repos/docker/docker.github.io","labels_url":"https://api.github.com/repos/docker/docker.github.io/issues/6267/labels{/name}","comments_url":"https://api.github.com/repos/docker/docker.github.io/issues/6267/comments","events_url":"https://api.github.com/repos/docker/docker.github.io/issues/6267/events","html_url":"https://github.com/docker/docker.github.io/issues/6267","id":306924492,"number":6267,"title":"Include an explicit statement in the docs advising against moving /var/lib/docker to an NFS share","user":{"login":"anweiss","id":2326106,"avatar_url":"https://avatars0.githubusercontent.com/u/2326106?v=4","gravatar_id":"","url":"https://api.github.com/users/anweiss","html_url":"https://github.com/anweiss","followers_url":"https://api.github.com/users/anweiss/followers","following_url":"https://api.github.com/users/anweiss/following{/other_user}","gists_url":"https://api.github.com/users/anweiss/gists{/gist_id}","starred_url":"https://api.github.com/users/anweiss/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/anweiss/subscriptions","organizations_url":"https://api.github.com/users/anweiss/orgs","repos_url":"https://api.github.com/users/anweiss/repos","events_url":"https://api.github.com/users/anweiss/events{/privacy}","received_events_url":"https://api.github.com/users/anweiss/received_events","type":"User","site_admin":false},"labels":[{"id":576533653,"url":"https://api.github.com/repos/docker/docker.github.io/labels/area/engine","name":"area/engine","color":"1aa9d9","default":false},{"id":673425998,"url":"https://api.github.com/repos/docker/docker.github.io/labels/area/storage","name":"area/storage","color":"1aa9d9","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2018-03-20T15:47:24Z","updated_at":"2018-03-21T17:13:12Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"### Problem description\r\n\r\nPer [this](https://github.com/moby/moby/issues/22539#issuecomment-217316284) comment in the upstream (CC @thaJeztah), we should have an explicit statement in the documentation that tells users not to move `/var/lib/docker` to an NFS share; more specifically, telling users not to set the Docker daemon `--data-root` flag to an NFS share.\r\n\r\n### Problem location and fix suggestions\r\n\r\nWe should include a statement prohibiting this somewhere on the [About storage drivers](https://docs.docker.com/storage/storagedriver/) page along with an explanation as to why one shouldn't do so. We should also include a similar statement next to the `--data-root` daemon flag docs somewhere in [this](https://github.com/docker/cli/blob/master/docs/reference/commandline/dockerd.md#run-multiple-daemons) section."},"comment":{"url":"https://api.github.com/repos/docker/docker.github.io/issues/comments/375022838","html_url":"https://github.com/docker/docker.github.io/issues/6267#issuecomment-375022838","issue_url":"https://api.github.com/repos/docker/docker.github.io/issues/6267","id":375022838,"user":{"login":"thaJeztah","id":1804568,"avatar_url":"https://avatars2.githubusercontent.com/u/1804568?v=4","gravatar_id":"","url":"https://api.github.com/users/thaJeztah","html_url":"https://github.com/thaJeztah","followers_url":"https://api.github.com/users/thaJeztah/followers","following_url":"https://api.github.com/users/thaJeztah/following{/other_user}","gists_url":"https://api.github.com/users/thaJeztah/gists{/gist_id}","starred_url":"https://api.github.com/users/thaJeztah/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/thaJeztah/subscriptions","organizations_url":"https://api.github.com/users/thaJeztah/orgs","repos_url":"https://api.github.com/users/thaJeztah/repos","events_url":"https://api.github.com/users/thaJeztah/events{/privacy}","received_events_url":"https://api.github.com/users/thaJeztah/received_events","type":"User","site_admin":false},"created_at":"2018-03-21T17:13:11Z","updated_at":"2018-03-21T17:13:11Z","author_association":"MEMBER","body":"Adding @cpuguy83 as well, as he may have more detailed information\r\n\r\nThere's a couple of issues with using NFS shares;\r\n\r\n- nfs may not support all the things that the storage-drivers expect (causing odd failures)\r\n- I _think_ some directories inside `/var/lib/docker` _could_ work (image store? volumes?), but:\r\n- the `/var/lib/docker` directory, or any subdirectory in it, should be exclusive to a single daemon. If multiple daemons share that directory (which could be if multiple daemons use the same NFS share), [bad things can happen](http://jpetazzo.github.io/2015/09/03/do-not-use-docker-in-docker-for-ci/).\r\n"}}
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