{"action":"created","comment":{"url":"https://api.github.com/repos/docker/docker/pulls/comments/74804726","id":74804726,"diff_hunk":"@@ -413,3 +414,17 @@ performance. This is because they bypass the storage driver and do not incur\n any of the potential overheads introduced by thin provisioning and \n copy-on-write. For this reason, you should place heavy write workloads on data \n volumes.\n+\n+## OverlayFS compatibility\n+To summarize the OverlayFS's aspect which is incompatible with other\n+filesystems:\n+\n+- **RPMs and Yum**. OverlayFS only implements a subset of the POSIX standards. \n+This can result in certain OverlayFS operations breaking POSIX standards. One \n+such operation is the *copy-up* operation. Therefore, using `yum` inside of a \n+container on a Docker host using the `overlay`/`overlay2` storage drivers is \n+unlikely to work without implementing workarounds.","path":"docs/userguide/storagedriver/overlayfs-driver.md","position":40,"original_position":40,"commit_id":"80e775efe2a187f4623af757e8ab7042cadda070","original_commit_id":"80e775efe2a187f4623af757e8ab7042cadda070","user":{"login":"thaJeztah","id":1804568,"avatar_url":"https://avatars.githubusercontent.com/u/1804568?v=3","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},"body":"ping @vbatts could you help us out here?","created_at":"2016-08-15T18:04:35Z","updated_at":"2016-08-15T18:04:35Z","html_url":"https://github.com/docker/docker/pull/25705#discussion_r74804726","pull_request_url":"https://api.github.com/repos/docker/docker/pulls/25705","_links":{"self":{"href":"https://api.github.com/repos/docker/docker/pulls/comments/74804726"},"html":{"href":"https://github.com/docker/docker/pull/25705#discussion_r74804726"},"pull_request":{"href":"https://api.github.com/repos/docker/docker/pulls/25705"}}},"pull_request":{"url":"https://api.github.com/repos/docker/docker/pulls/25705","id":81290922,"html_url":"https://github.com/docker/docker/pull/25705","diff_url":"https://github.com/docker/docker/pull/25705.diff","patch_url":"https://github.com/docker/docker/pull/25705.patch","issue_url":"https://api.github.com/repos/docker/docker/issues/25705","number":25705,"state":"open","locked":false,"title":"Add a note about the rename(2) system call on AUFS and 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https://github.com/torvalds/linux/blob/v4.8-rc2/fs/overlayfs/copy_up.c#L318-L322\r\n- AUFS https://github.com/sfjro/aufs4-standalone/blob/29760abed58378541ec6b9fedb77310b5a012ef4/fs/aufs/i_op_ren.c#L452-L454\r\n","created_at":"2016-08-15T09:47:22Z","updated_at":"2016-08-15T18:04:35Z","closed_at":null,"merged_at":null,"merge_commit_sha":"6e9b71222ce8595c267a93210195eb13955d57e9","assignee":null,"assignees":[],"milestone":null,"commits_url":"https://api.github.com/repos/docker/docker/pulls/25705/commits","review_comments_url":"https://api.github.com/repos/docker/docker/pulls/25705/comments","review_comment_url":"https://api.github.com/repos/docker/docker/pulls/comments{/number}","comments_url":"https://api.github.com/repos/docker/docker/issues/25705/comments","statuses_url":"https://api.github.com/repos/docker/docker/statuses/80e775efe2a187f4623af757e8ab7042cadda070","head":{"label":"AkihiroSuda:noteRenameCOW","ref":"noteRenameCOW","sha":"80e775efe2a187f4623af757e8ab7042cadda070","user":{"login":"AkihiroSuda","id":9248427,"avatar_url":"https://avatars.githubusercontent.com/u/9248427?v=3","gravatar_id":"","url":"https://api.github.com/users/AkihiroSuda","html_url":"https://github.com/AkihiroSuda","followers_url":"https://api.github.com/users/AkihiroSuda/followers","following_url":"https://api.github.com/users/AkihiroSuda/following{/other_user}","gists_url":"https://api.github.com/users/AkihiroSuda/gists{/gist_id}","starred_url":"https://api.github.com/users/AkihiroSuda/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AkihiroSuda/subscriptions","organizations_url":"https://api.github.com/users/AkihiroSuda/orgs","repos_url":"https://api.github.com/users/AkihiroSuda/repos","events_url":"https://api.github.com/users/AkihiroSuda/events{/privacy}","received_events_url":"https://api.github.com/users/AkihiroSuda/received_events","type":"User","site_admin":false},"repo":{"id":51440731,"name":"docker","full_name":"AkihiroSuda/docker","owner":{"login":"AkihiroSuda","id":9248427,"avatar_url":"https://avatars.githubusercontent.com/u/9248427?v=3","gravatar_id":"","url":"https://api.github.com/users/AkihiroSuda","html_url":"https://github.com/AkihiroSuda","followers_url":"https://api.github.com/users/AkihiroSuda/followers","following_url":"https://api.github.com/users/AkihiroSuda/following{/other_user}","gists_url":"https://api.github.com/users/AkihiroSuda/gists{/gist_id}","starred_url":"https://api.github.com/users/AkihiroSuda/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AkihiroSuda/subscriptions","organizations_url":"https://api.github.com/users/AkihiroSuda/orgs","repos_url":"https://api.github.com/users/AkihiroSuda/repos","events_url":"https://api.github.com/users/AkihiroSuda/events{/privacy}","received_events_url":"https://api.github.com/users/AkihiroSuda/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/AkihiroSuda/docker","description":"Docker 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