)]}'
{"nova/virt/driver.py":[{"author":{"_account_id":1779,"name":"Daniel Berrange","email":"berrange@redhat.com","username":"berrange"},"change_message_id":"f6d817d7abac6e81b695a23f60ae7986db88ffda","unresolved":false,"context_lines":[{"line_number":45,"context_line":"                    \u0027\"none\" \u003d\u003e no storage provisioning is done up front, \u0027"},{"line_number":46,"context_line":"                    \u0027\"space\" \u003d\u003e storage is fully allocated at instance start, \u0027"},{"line_number":47,"context_line":"                    \u0027\"performance\" \u003d\u003e extra processing is done at startup \u0027"},{"line_number":48,"context_line":"                    \u0027to further improve run time performance\u0027),"},{"line_number":49,"context_line":"    cfg.BoolOpt(\u0027use_cow_images\u0027,"},{"line_number":50,"context_line":"                default\u003dTrue,"},{"line_number":51,"context_line":"                help\u003d\u0027Whether to use cow images\u0027),"}],"source_content_type":"text/x-python","patch_set":3,"id":"AAAAM3%2F%2ByHk%3D","line":48,"updated":"2013-02-19 11:25:25.000000000","message":"I\u0027m finding it hard to understand the difference between \"space\" and \"performance\" from these descriptions. Without looking at the code, these descriptions make me think both options do the same thing.","commit_id":"653d9685f89a8d2581acc989bc949985f5b6f5b2"},{"author":{"_account_id":1812,"name":"p-draigbrady","email":"P@draigBrady.com","username":"p-draigbrady"},"change_message_id":"49a50f27c9fa579ba7e058ceab9b4b858e2a1464","unresolved":false,"context_lines":[{"line_number":45,"context_line":"                    \u0027\"none\" \u003d\u003e no storage provisioning is done up front, \u0027"},{"line_number":46,"context_line":"                    \u0027\"space\" \u003d\u003e storage is fully allocated at instance start, \u0027"},{"line_number":47,"context_line":"                    \u0027\"performance\" \u003d\u003e extra processing is done at startup \u0027"},{"line_number":48,"context_line":"                    \u0027to further improve run time performance\u0027),"},{"line_number":49,"context_line":"    cfg.BoolOpt(\u0027use_cow_images\u0027,"},{"line_number":50,"context_line":"                default\u003dTrue,"},{"line_number":51,"context_line":"                help\u003d\u0027Whether to use cow images\u0027),"}],"source_content_type":"text/x-python","patch_set":3,"id":"AAAAM3%2F%2Bx%2Fg%3D","line":48,"in_reply_to":"AAAAM3%2F%2ByHk%3D","updated":"2013-02-19 13:03:28.000000000","message":"Awkard to be concise and complete here.\nAlso I\u0027m trying to have as general values as\ncan be used in future for new/existing backends.\n\nHow about:\n\n\"space\" \u003d\u003e storage is fully allocated at instance start,\nwhich guarantees run time storage allocation and may\nimprove run time I/O performance.\n\n\"performance\" \u003d\u003e Trade instance start up latency for\nallow for pre processing that may improve run time I/O performance.\n\nMaybe I should keep \"performance\" as a separate patch,\nsince it\u0027s related but separate. There are also a few questions\nregarding implementation.\n\nOk patch coming up...","commit_id":"653d9685f89a8d2581acc989bc949985f5b6f5b2"}]}