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11:27:50.000000000","message":"Done","commit_id":"d9698c025c5fc572bca2325d69cf38e78fc8983f"},{"author":{"_account_id":20873,"name":"Laszlo Hegedus","email":"hegedues.laszlo@gmail.com","username":"laszloh"},"change_message_id":"a340802373aed537af9fbc7189fd8b51db54038c","unresolved":false,"context_lines":[{"line_number":19,"context_line":""},{"line_number":20,"context_line":"Supporting for direct downloads of glance locations is already"},{"line_number":21,"context_line":"added by plug-in modules.[1]"},{"line_number":22,"context_line":"And this feature only can support file not rbd images."},{"line_number":23,"context_line":""},{"line_number":24,"context_line":"Added new rbd download scheme for Nova."},{"line_number":25,"context_line":"With that change Nova can download RBD images directly from Ceph"}],"source_content_type":"text/x-rst","patch_set":8,"id":"dab17558_6904eec5","line":22,"range":{"start_line":22,"start_character":17,"end_line":22,"end_character":25},"updated":"2016-05-13 07:39:58.000000000","message":"can only","commit_id":"cdc279883570a0b7cb2557461de8909075f138fa"},{"author":{"_account_id":8347,"name":"Hahyun","email":"hfamily15@naver.com","username":"Hahyun"},"change_message_id":"faeb84abdca8f454feaaddf8d66ca145bb2b74e9","unresolved":false,"context_lines":[{"line_number":19,"context_line":""},{"line_number":20,"context_line":"Supporting for direct downloads of glance locations is already"},{"line_number":21,"context_line":"added by plug-in modules.[1]"},{"line_number":22,"context_line":"And this feature only can support file not rbd images."},{"line_number":23,"context_line":""},{"line_number":24,"context_line":"Added new rbd download scheme for Nova."},{"line_number":25,"context_line":"With that change Nova can download RBD images directly from 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vm."},{"line_number":35,"context_line":""}],"source_content_type":"text/x-rst","patch_set":9,"id":"dab17558_383c3b2e","line":32,"updated":"2016-05-17 20:58:01.000000000","message":"You can leave this line out.","commit_id":"1e3fc0c736234c804d09f46ff4a1dab0256ec418"},{"author":{"_account_id":5441,"name":"Andrew Laski","email":"andrew@lascii.com","username":"alaski"},"change_message_id":"21f0e0247fa73e1b90023378f210c268a1630aed","unresolved":false,"context_lines":[{"line_number":31,"context_line":""},{"line_number":32,"context_line":"No changes to a typical end-user\u0027s request for \"nova boot\"."},{"line_number":33,"context_line":"Nova service just uses rbd direct_url for downloading glance images"},{"line_number":34,"context_line":"directly to boot vm."},{"line_number":35,"context_line":""},{"line_number":36,"context_line":"Proposed change"},{"line_number":37,"context_line":"\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d"}],"source_content_type":"text/x-rst","patch_set":9,"id":"dab17558_f8d113cd","line":34,"updated":"2016-05-17 20:58:01.000000000","message":"A use case should indicate a desire of a user or deployer that is addressed. In this case the use case might be that deployer uses ceph for an image backend and wants to take advantage of fast exports.","commit_id":"1e3fc0c736234c804d09f46ff4a1dab0256ec418"},{"author":{"_account_id":5441,"name":"Andrew Laski","email":"andrew@lascii.com","username":"alaski"},"change_message_id":"21f0e0247fa73e1b90023378f210c268a1630aed","unresolved":false,"context_lines":[{"line_number":36,"context_line":"Proposed change"},{"line_number":37,"context_line":"\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d"},{"line_number":38,"context_line":""},{"line_number":39,"context_line":"Instead of copying through glance node, nova-compute service can directly"},{"line_number":40,"context_line":"download image from ceph to compute node."},{"line_number":41,"context_line":""},{"line_number":42,"context_line":"The workflow is simple as follows:"},{"line_number":43,"context_line":""},{"line_number":44,"context_line":"    1. Create an image with ceph glance backend."},{"line_number":45,"context_line":"    2. nova boot with the image created above."},{"line_number":46,"context_line":""},{"line_number":47,"context_line":"Failures will be reported in the form of stack traces"},{"line_number":48,"context_line":"in the nova compute and glance logs."}],"source_content_type":"text/x-rst","patch_set":9,"id":"dab17558_d8bd2f69","line":45,"range":{"start_line":39,"start_character":0,"end_line":45,"end_character":46},"updated":"2016-05-17 20:58:01.000000000","message":"This section should focus on the Nova changes needed to make this work. Which python modules will be updated? Provide a brief description of the changes that will be made. Where will Nova check to see if it can download directly? How will the direct download affect image caching?","commit_id":"1e3fc0c736234c804d09f46ff4a1dab0256ec418"},{"author":{"_account_id":5441,"name":"Andrew Laski","email":"andrew@lascii.com","username":"alaski"},"change_message_id":"21f0e0247fa73e1b90023378f210c268a1630aed","unresolved":false,"context_lines":[{"line_number":67,"context_line":""},{"line_number":68,"context_line":"Glance will need to be configured with direct_url support enabled in order for"},{"line_number":69,"context_line":"Nova to determine what and where to export the image from,"},{"line_number":70,"context_line":"depending on system configurations,this could leak backend credentials [2]."},{"line_number":71,"context_line":"Devstack has already been updated to switch behaviors when"},{"line_number":72,"context_line":"Ceph support is requested [3]."},{"line_number":73,"context_line":""}],"source_content_type":"text/x-rst","patch_set":9,"id":"dab17558_787a43bb","line":70,"updated":"2016-05-17 20:58:01.000000000","message":"This really limits the usefulness of this feature.","commit_id":"1e3fc0c736234c804d09f46ff4a1dab0256ec418"},{"author":{"_account_id":5441,"name":"Andrew Laski","email":"andrew@lascii.com","username":"alaski"},"change_message_id":"21f0e0247fa73e1b90023378f210c268a1630aed","unresolved":false,"context_lines":[{"line_number":116,"context_line":"Dependencies"},{"line_number":117,"context_line":"\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d"},{"line_number":118,"context_line":""},{"line_number":119,"context_line":"You need to use the Glance v2 API as direct URL was added."},{"line_number":120,"context_line":""},{"line_number":121,"context_line":"Testing"},{"line_number":122,"context_line":"\u003d\u003d\u003d\u003d\u003d\u003d\u003d"}],"source_content_type":"text/x-rst","patch_set":9,"id":"dab17558_58277fc9","line":119,"updated":"2016-05-17 20:58:01.000000000","message":"What will happen if this is not true? How will Nova operate in that case?","commit_id":"1e3fc0c736234c804d09f46ff4a1dab0256ec418"},{"author":{"_account_id":5441,"name":"Andrew Laski","email":"andrew@lascii.com","username":"alaski"},"change_message_id":"21f0e0247fa73e1b90023378f210c268a1630aed","unresolved":false,"context_lines":[{"line_number":130,"context_line":"\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d"},{"line_number":131,"context_line":""},{"line_number":132,"context_line":"Some configuration options for nova.conf  should be added as below."},{"line_number":133,"context_line":" 1. allowed_direct_url_schemes \u003d [file,rbd]"},{"line_number":134,"context_line":" 2. Timeout value used when connecting ceph cluster : rados_connect_timeout \u003d 0"},{"line_number":135,"context_line":""},{"line_number":136,"context_line":"References"}],"source_content_type":"text/x-rst","patch_set":9,"id":"dab17558_8c1b6872","line":133,"updated":"2016-05-17 20:58:01.000000000","message":"Why is this configuration needed? It would be better if Nova just knew to do a direct download if it is possible to do.","commit_id":"1e3fc0c736234c804d09f46ff4a1dab0256ec418"},{"author":{"_account_id":5441,"name":"Andrew Laski","email":"andrew@lascii.com","username":"alaski"},"change_message_id":"21f0e0247fa73e1b90023378f210c268a1630aed","unresolved":false,"context_lines":[{"line_number":131,"context_line":""},{"line_number":132,"context_line":"Some configuration options for nova.conf  should be added as below."},{"line_number":133,"context_line":" 1. allowed_direct_url_schemes \u003d [file,rbd]"},{"line_number":134,"context_line":" 2. Timeout value used when connecting ceph cluster : rados_connect_timeout \u003d 0"},{"line_number":135,"context_line":""},{"line_number":136,"context_line":"References"},{"line_number":137,"context_line":"\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d"}],"source_content_type":"text/x-rst","patch_set":9,"id":"dab17558_ccd1f058","line":134,"updated":"2016-05-17 20:58:01.000000000","message":"Is it possible to use the os-brick library for the direct download? This configuration option is not something I would like to see in Nova. It would be better in a library for image transfers.","commit_id":"1e3fc0c736234c804d09f46ff4a1dab0256ec418"}]}