{"action":"opened","number":11,"pull_request":{"url":"https://api.github.com/repos/ceph/ceph-client/pulls/11","id":35895272,"html_url":"https://github.com/ceph/ceph-client/pull/11","diff_url":"https://github.com/ceph/ceph-client/pull/11.diff","patch_url":"https://github.com/ceph/ceph-client/pull/11.patch","issue_url":"https://api.github.com/repos/ceph/ceph-client/issues/11","number":11,"state":"open","locked":false,"title":"Wip krbd copy-on-read","user":{"login":"dragonylffly","id":4452507,"avatar_url":"https://avatars.githubusercontent.com/u/4452507?v=3","gravatar_id":"","url":"https://api.github.com/users/dragonylffly","html_url":"https://github.com/dragonylffly","followers_url":"https://api.github.com/users/dragonylffly/followers","following_url":"https://api.github.com/users/dragonylffly/following{/other_user}","gists_url":"https://api.github.com/users/dragonylffly/gists{/gist_id}","starred_url":"https://api.github.com/users/dragonylffly/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dragonylffly/subscriptions","organizations_url":"https://api.github.com/users/dragonylffly/orgs","repos_url":"https://api.github.com/users/dragonylffly/repos","events_url":"https://api.github.com/users/dragonylffly/events{/privacy}","received_events_url":"https://api.github.com/users/dragonylffly/received_events","type":"User","site_admin":false},"body":"This is a new feature of rbd layering, when reading an object from child, if not exist, the kernel rbd client will not only request parent for the object, but also write it to child, and the jobs are done in an asynchronous way. Therefore, the subsequent accesses on this object will hit child without bothering parent. This feature could avoid longer latency incurred during accessing parent, especially when child and parent are geographically isolated, and it also could potentially avoid overloading parent.","created_at":"2015-05-21T02:42:10Z","updated_at":"2015-05-21T02:42:10Z","closed_at":null,"merged_at":null,"merge_commit_sha":null,"assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/ceph/ceph-client/pulls/11/commits","review_comments_url":"https://api.github.com/repos/ceph/ceph-client/pulls/11/comments","review_comment_url":"https://api.github.com/repos/ceph/ceph-client/pulls/comments{/number}","comments_url":"https://api.github.com/repos/ceph/ceph-client/issues/11/comments","statuses_url":"https://api.github.com/repos/ceph/ceph-client/statuses/447c0db42cc71e92b1c2209f80e0e419628c3a9c","head":{"label":"kylinstorage:wip-krbd-cor","ref":"wip-krbd-cor","sha":"447c0db42cc71e92b1c2209f80e0e419628c3a9c","user":{"login":"kylinstorage","id":6038492,"avatar_url":"https://avatars.githubusercontent.com/u/6038492?v=3","gravatar_id":"","url":"https://api.github.com/users/kylinstorage","html_url":"https://github.com/kylinstorage","followers_url":"https://api.github.com/users/kylinstorage/followers","following_url":"https://api.github.com/users/kylinstorage/following{/other_user}","gists_url":"https://api.github.com/users/kylinstorage/gists{/gist_id}","starred_url":"https://api.github.com/users/kylinstorage/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kylinstorage/subscriptions","organizations_url":"https://api.github.com/users/kylinstorage/orgs","repos_url":"https://api.github.com/users/kylinstorage/repos","events_url":"https://api.github.com/users/kylinstorage/events{/privacy}","received_events_url":"https://api.github.com/users/kylinstorage/received_events","type":"Organization","site_admin":false},"repo":{"id":15299945,"name":"ceph-client","full_name":"kylinstorage/ceph-client","owner":{"login":"kylinstorage","id":6038492,"avatar_url":"https://avatars.githubusercontent.com/u/6038492?v=3","gravatar_id":"","url":"https://api.github.com/users/kylinstorage","html_url":"https://github.com/kylinstorage","followers_url":"https://api.github.com/users/kylinstorage/followers","following_url":"https://api.github.com/users/kylinstorage/following{/other_user}","gists_url":"https://api.github.com/users/kylinstorage/gists{/gist_id}","starred_url":"https://api.github.com/users/kylinstorage/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kylinstorage/subscriptions","organizations_url":"https://api.github.com/users/kylinstorage/orgs","repos_url":"https://api.github.com/users/kylinstorage/repos","events_url":"https://api.github.com/users/kylinstorage/events{/privacy}","received_events_url":"https://api.github.com/users/kylinstorage/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/kylinstorage/ceph-client","description":"Ceph kernel client","fork":true,"url":"https://api.github.com/repos/kylinstorage/ceph-client","forks_url":"https://api.github.com/repos/kylinstorage/ceph-client/forks","keys_url":"https://api.github.com/repos/kylinstorage/ceph-client/keys{/key_id}","collaborators_url":"https://api.github.com/repos/kylinstorage/ceph-client/collaborators{/collaborator}","teams_url":"https://api.github.com/repos/kylinstorage/ceph-client/teams","hooks_url":"https://api.github.com/repos/kylinstorage/ceph-client/hooks","issue_events_url":"https://api.github.com/repos/kylinstorage/ceph-client/issues/events{/number}","events_url":"https://api.github.com/repos/kylinstorage/ceph-client/events","assignees_url":"https://api.github.com/repos/kylinstorage/ceph-client/assignees{/user}","branches_url":"https://api.github.com/repos/kylinstorage/ceph-client/branches{/branch}","tags_url":"https://api.github.com/repos/kylinstorage/ceph-client/tags","blobs_url":"https://api.github.com/repos/kylinstorage/ceph-client/git/blobs{/sha}","git_tags_url":"https://api.github.com/repos/kylinstorage/ceph-client/git/tags{/sha}","git_refs_url":"https://api.github.com/repos/kylinstorage/ceph-client/git/refs{/sha}","trees_url":"https://api.github.com/repos/kylinstorage/ceph-client/git/trees{/sha}","statuses_url":"https://api.github.com/repos/kylinstorage/ceph-client/statuses/{sha}","languages_url":"https://api.github.com/repos/kylinstorage/ceph-client/languages","stargazers_url":"https://api.github.com/repos/kylinstorage/ceph-client/stargazers","contributors_url":"https://api.github.com/repos/kylinstorage/ceph-client/contributors","subscribers_url":"https://api.github.com/repos/kylinstorage/ceph-client/subscribers","subscription_url":"https://api.github.com/repos/kylinstorage/ceph-client/subscription","commits_url":"https://api.github.com/repos/kylinstorage/ceph-client/commits{/sha}","git_commits_url":"https://api.github.com/repos/kylinstorage/ceph-client/git/commits{/sha}","comments_url":"https://api.github.com/repos/kylinstorage/ceph-client/comments{/number}","issue_comment_url":"https://api.github.com/repos/kylinstorage/ceph-client/issues/comments{/number}","contents_url":"https://api.github.com/repos/kylinstorage/ceph-client/contents/{+path}","compare_url":"https://api.github.com/repos/kylinstorage/ceph-client/compare/{base}...{head}","merges_url":"https://api.github.com/repos/kylinstorage/ceph-client/merges","archive_url":"https://api.github.com/repos/kylinstorage/ceph-client/{archive_format}{/ref}","downloads_url":"https://api.github.com/repos/kylinstorage/ceph-client/downloads","issues_url":"https://api.github.com/repos/kylinstorage/ceph-client/issues{/number}","pulls_url":"https://api.github.com/repos/kylinstorage/ceph-client/pulls{/number}","milestones_url":"https://api.github.com/repos/kylinstorage/ceph-client/milestones{/number}","notifications_url":"https://api.github.com/repos/kylinstorage/ceph-client/notifications{?since,all,participating}","labels_url":"https://api.github.com/repos/kylinstorage/ceph-client/labels{/name}","releases_url":"https://api.github.com/repos/kylinstorage/ceph-client/releases{/id}","created_at":"2013-12-19T02:08:36Z","updated_at":"2013-12-30T02:19:38Z","pushed_at":"2015-05-21T02:36:45Z","git_url":"git://github.com/kylinstorage/ceph-client.git","ssh_url":"git@github.com:kylinstorage/ceph-client.git","clone_url":"https://github.com/kylinstorage/ceph-client.git","svn_url":"https://github.com/kylinstorage/ceph-client","homepage":"http://ceph.newdream.net/","size":1074924,"stargazers_count":0,"watchers_count":0,"language":"C","has_issues":false,"has_downloads":true,"has_wiki":true,"has_pages":false,"forks_count":0,"mirror_url":null,"open_issues_count":0,"forks":0,"open_issues":0,"watchers":0,"default_branch":"master"}},"base":{"label":"ceph:for-linus","ref":"for-linus","sha":"521a04d06a729e5971cdee7f84080387ed320527","user":{"login":"ceph","id":1015767,"avatar_url":"https://avatars.githubusercontent.com/u/1015767?v=3","gravatar_id":"","url":"https://api.github.com/users/ceph","html_url":"https://github.com/ceph","followers_url":"https://api.github.com/users/ceph/followers","following_url":"https://api.github.com/users/ceph/following{/other_user}","gists_url":"https://api.github.com/users/ceph/gists{/gist_id}","starred_url":"https://api.github.com/users/ceph/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ceph/subscriptions","organizations_url":"https://api.github.com/users/ceph/orgs","repos_url":"https://api.github.com/users/ceph/repos","events_url":"https://api.github.com/users/ceph/events{/privacy}","received_events_url":"https://api.github.com/users/ceph/received_events","type":"Organization","site_admin":false},"repo":{"id":2343211,"name":"ceph-client","full_name":"ceph/ceph-client","owner":{"login":"ceph","id":1015767,"avatar_url":"https://avatars.githubusercontent.com/u/1015767?v=3","gravatar_id":"","url":"https://api.github.com/users/ceph","html_url":"https://github.com/ceph","followers_url":"https://api.github.com/users/ceph/followers","following_url":"https://api.github.com/users/ceph/following{/other_user}","gists_url":"https://api.github.com/users/ceph/gists{/gist_id}","starred_url":"https://api.github.com/users/ceph/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ceph/subscriptions","organizations_url":"https://api.github.com/users/ceph/orgs","repos_url":"https://api.github.com/users/ceph/repos","events_url":"https://api.github.com/users/ceph/events{/privacy}","received_events_url":"https://api.github.com/users/ceph/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/ceph/ceph-client","description":"Ceph kernel client","fork":false,"url":"https://api.github.com/repos/ceph/ceph-client","forks_url":"https://api.github.com/repos/ceph/ceph-client/forks","keys_url":"https://api.github.com/repos/ceph/ceph-client/keys{/key_id}","collaborators_url":"https://api.github.com/repos/ceph/ceph-client/collaborators{/collaborator}","teams_url":"https://api.github.com/repos/ceph/ceph-client/teams","hooks_url":"https://api.github.com/repos/ceph/ceph-client/hooks","issue_events_url":"https://api.github.com/repos/ceph/ceph-client/issues/events{/number}","events_url":"https://api.github.com/repos/ceph/ceph-client/events","assignees_url":"https://api.github.com/repos/ceph/ceph-client/assignees{/user}","branches_url":"https://api.github.com/repos/ceph/ceph-client/branches{/branch}","tags_url":"https://api.github.com/repos/ceph/ceph-client/tags","blobs_url":"https://api.github.com/repos/ceph/ceph-client/git/blobs{/sha}","git_tags_url":"https://api.github.com/repos/ceph/ceph-client/git/tags{/sha}","git_refs_url":"https://api.github.com/repos/ceph/ceph-client/git/refs{/sha}","trees_url":"https://api.github.com/repos/ceph/ceph-client/git/trees{/sha}","statuses_url":"https://api.github.com/repos/ceph/ceph-client/statuses/{sha}","languages_url":"https://api.github.com/repos/ceph/ceph-client/languages","stargazers_url":"https://api.github.com/repos/ceph/ceph-client/stargazers","contributors_url":"https://api.github.com/repos/ceph/ceph-client/contributors","subscribers_url":"https://api.github.com/repos/ceph/ceph-client/subscribers","subscription_url":"https://api.github.com/repos/ceph/ceph-client/subscription","commits_url":"https://api.github.com/repos/ceph/ceph-client/commits{/sha}","git_commits_url":"https://api.github.com/repos/ceph/ceph-client/git/commits{/sha}","comments_url":"https://api.github.com/repos/ceph/ceph-client/comments{/number}","issue_comment_url":"https://api.github.com/repos/ceph/ceph-client/issues/comments{/number}","contents_url":"https://api.github.com/repos/ceph/ceph-client/contents/{+path}","compare_url":"https://api.github.com/repos/ceph/ceph-client/compare/{base}...{head}","merges_url":"https://api.github.com/repos/ceph/ceph-client/merges","archive_url":"https://api.github.com/repos/ceph/ceph-client/{archive_format}{/ref}","downloads_url":"https://api.github.com/repos/ceph/ceph-client/downloads","issues_url":"https://api.github.com/repos/ceph/ceph-client/issues{/number}","pulls_url":"https://api.github.com/repos/ceph/ceph-client/pulls{/number}","milestones_url":"https://api.github.com/repos/ceph/ceph-client/milestones{/number}","notifications_url":"https://api.github.com/repos/ceph/ceph-client/notifications{?since,all,participating}","labels_url":"https://api.github.com/repos/ceph/ceph-client/labels{/name}","releases_url":"https://api.github.com/repos/ceph/ceph-client/releases{/id}","created_at":"2011-09-07T17:26:50Z","updated_at":"2015-05-16T02:53:59Z","pushed_at":"2015-05-20T18:40:12Z","git_url":"git://github.com/ceph/ceph-client.git","ssh_url":"git@github.com:ceph/ceph-client.git","clone_url":"https://github.com/ceph/ceph-client.git","svn_url":"https://github.com/ceph/ceph-client","homepage":"http://ceph.newdream.net/","size":1791403,"stargazers_count":60,"watchers_count":60,"language":"C","has_issues":true,"has_downloads":true,"has_wiki":true,"has_pages":false,"forks_count":37,"mirror_url":null,"open_issues_count":3,"forks":37,"open_issues":3,"watchers":60,"default_branch":"for-linus"}},"_links":{"self":{"href":"https://api.github.com/repos/ceph/ceph-client/pulls/11"},"html":{"href":"https://github.com/ceph/ceph-client/pull/11"},"issue":{"href":"https://api.github.com/repos/ceph/ceph-client/issues/11"},"comments":{"href":"https://api.github.com/repos/ceph/ceph-client/issues/11/comments"},"review_comments":{"href":"https://api.github.com/repos/ceph/ceph-client/pulls/11/comments"},"review_comment":{"href":"https://api.github.com/repos/ceph/ceph-client/pulls/comments{/number}"},"commits":{"href":"https://api.github.com/repos/ceph/ceph-client/pulls/11/commits"},"statuses":{"href":"https://api.github.com/repos/ceph/ceph-client/statuses/447c0db42cc71e92b1c2209f80e0e419628c3a9c"}},"merged":false,"mergeable":null,"mergeable_state":"unknown","merged_by":null,"comments":0,"review_comments":0,"commits":4,"additions":382,"deletions":3,"changed_files":1}}