{"html_url": "https://github.com/simonw/datasette/pull/1870#issuecomment-1295667649", "issue_url": "https://api.github.com/repos/simonw/datasette/issues/1870", "id": 1295667649, "node_id": "IC_kwDOBm6k_c5NOlHB", "user": {"value": 536941, "label": "fgregg"}, "created_at": "2022-10-29T00:52:43Z", "updated_at": "2022-10-29T00:53:43Z", "author_association": "CONTRIBUTOR", "body": "> Are you saying that I can build a container, but then when I run it and it does `datasette serve -i data.db ...` it will somehow modify the image, or create a new modified filesystem layer in the runtime environment, as a result of running that `serve` command?\r\n\r\nSomehow, `datasette serve -i data.db` will lead to the `data.db` being modified, which will trigger a [copy-on-write](https://docs.docker.com/storage/storagedriver/#the-copy-on-write-cow-strategy) of `data.db` into the read-write layer of the container.\r\n\r\nI don't understand **how** that happens.\r\n\r\nit kind of feels like a bug in sqlite, but i can't quite follow the sqlite code.", "reactions": "{\"total_count\": 0, \"+1\": 0, \"-1\": 0, \"laugh\": 0, \"hooray\": 0, \"confused\": 0, \"heart\": 0, \"rocket\": 0, \"eyes\": 0}", "issue": {"value": 1426379903, "label": "don't use immutable=1, only mode=ro"}, "performed_via_github_app": null}
{"html_url": "https://github.com/simonw/datasette/pull/1870#issuecomment-1294285471", "issue_url": "https://api.github.com/repos/simonw/datasette/issues/1870", "id": 1294285471, "node_id": "IC_kwDOBm6k_c5NJTqf", "user": {"value": 536941, "label": "fgregg"}, "created_at": "2022-10-28T01:06:03Z", "updated_at": "2022-10-28T01:06:03Z", "author_association": "CONTRIBUTOR", "body": "as far as i can tell, [this is where the \"immutable\" argument is used](https://github.com/sqlite/sqlite/blob/c97bb14fab566f6fa8d967c8fd1e90f3702d5b73/src/pager.c#L4926-L4931) in sqlite:\r\n\r\n```c\r\n      pPager->noLock = sqlite3_uri_boolean(pPager->zFilename, \"nolock\", 0);\r\n      if( (iDc & SQLITE_IOCAP_IMMUTABLE)!=0\r\n       || sqlite3_uri_boolean(pPager->zFilename, \"immutable\", 0) ){\r\n          vfsFlags |= SQLITE_OPEN_READONLY;\r\n          goto act_like_temp_file;\r\n      }\r\n```\r\n\r\nso it does set the read only flag, but then has a goto.", "reactions": "{\"total_count\": 0, \"+1\": 0, \"-1\": 0, \"laugh\": 0, \"hooray\": 0, \"confused\": 0, \"heart\": 0, \"rocket\": 0, \"eyes\": 0}", "issue": {"value": 1426379903, "label": "don't use immutable=1, only mode=ro"}, "performed_via_github_app": null}
{"html_url": "https://github.com/simonw/datasette/pull/1870#issuecomment-1294237783", "issue_url": "https://api.github.com/repos/simonw/datasette/issues/1870", "id": 1294237783, "node_id": "IC_kwDOBm6k_c5NJIBX", "user": {"value": 536941, "label": "fgregg"}, "created_at": "2022-10-27T23:42:18Z", "updated_at": "2022-10-27T23:42:18Z", "author_association": "CONTRIBUTOR", "body": "Relevant sqlite forum thread: https://www.sqlite.org/forum/forumpost/02f7bda329f41e30451472421cf9ce7f715b768ce3db02797db1768e47950d48", "reactions": "{\"total_count\": 0, \"+1\": 0, \"-1\": 0, \"laugh\": 0, \"hooray\": 0, \"confused\": 0, \"heart\": 0, \"rocket\": 0, \"eyes\": 0}", "issue": {"value": 1426379903, "label": "don't use immutable=1, only mode=ro"}, "performed_via_github_app": null}