)]}'
{"specs/ussuri/approved/expose-auto-converge-post-copy.rst":[{"author":{"_account_id":9555,"name":"Matthew Booth","email":"mbooth@redhat.com","username":"MatthewBooth"},"change_message_id":"6e5d4534209d155976b7dc1528c27c6da79644d8","unresolved":false,"context_lines":[{"line_number":24,"context_line":"Use Cases"},{"line_number":25,"context_line":"---------"},{"line_number":26,"context_line":""},{"line_number":27,"context_line":"* Some applications do not want increased risk of being rebooted due to a"},{"line_number":28,"context_line":"  network failure or memory page access failure during post-copy"},{"line_number":29,"context_line":"  live-migration."},{"line_number":30,"context_line":""},{"line_number":31,"context_line":"* Some applications are performance sensitive (such as some scientific"},{"line_number":32,"context_line":"  computing applications); such applications do not want performance throttled"}],"source_content_type":"text/x-rst","patch_set":2,"id":"3fa7e38b_2e80c8f7","line":29,"range":{"start_line":27,"start_character":0,"end_line":29,"end_character":17},"updated":"2019-11-06 02:29:02.000000000","message":"I don\u0027t believe this has ever been a realistic concern. Any failure which would cause this would also, in practice, cause the failure of the application in any case.\n\nAdditionally, the failure windows also tends to be very short in practise.","commit_id":"606f9550052f22aa26c573e78bc7061b308cf7b1"},{"author":{"_account_id":9555,"name":"Matthew Booth","email":"mbooth@redhat.com","username":"MatthewBooth"},"change_message_id":"6e5d4534209d155976b7dc1528c27c6da79644d8","unresolved":false,"context_lines":[{"line_number":38,"context_line":"  to reset the instance to make it available. Therefore such applications do"},{"line_number":39,"context_line":"  not want use both features during live-migration."},{"line_number":40,"context_line":""},{"line_number":41,"context_line":"* For the above problems, the operator wants to control whether a single"},{"line_number":42,"context_line":"  instance enables auto converge or post copy during live migration. But"},{"line_number":43,"context_line":"  currently the minimum unit that can be controlled is the compute node."},{"line_number":44,"context_line":""},{"line_number":45,"context_line":"Proposed change"},{"line_number":46,"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":2,"id":"3fa7e38b_aea83878","line":43,"range":{"start_line":41,"start_character":0,"end_line":43,"end_character":72},"updated":"2019-11-06 02:29:02.000000000","message":"1. Live migration without the above also involves a short pause.\n\n2. Auto-converge won\u0027t be used unless live migration is failing. Post-copy will also be very, very short unless live migration is failing. IOW, this spec amounts to: disable live migration for certain guests.\n\nGiven that live migration is an admin action, if the cloud operator doesn\u0027t want to live migrate a guest, what\u0027s stopping them from just not live migrating the guest?","commit_id":"606f9550052f22aa26c573e78bc7061b308cf7b1"}]}