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This creates a window when the pinned executor binary will fail to\nexecute. There are two factors which make the issue easier to hit:\n\n- when the distribution uses a finely-grained shared-lib-tag. E.g. Fedora\n  uses version-release as the tag, which means that the issue occurs on\n  every package upgrade. This is the right thing to do, because the\n  ABI of our internal libraries is not stable at all, so replacing the\n  library from a different version in place creates a window where our\n  programs may crash or misbehave.\n\n- when the distribution doesn't immediately reexec all the managers after\n  upgrade. In early versions of systemd, we used to hammer the machine during\n  upgrade, doing daemon-reexecs repeatedly. This works, but is ugly and\n  wasteful. Doing the reexecs while the upgrade is in progres also creates a\n  window where a mix of old and new configs or both is loaded. Users are\n  particularly annoyed by those reloads if there is some issue in the\n  configuration causing us to emit warnings on every reexec. Doing the\n  reexecs once after the new configuration and libraries have been put\n  in place is nicer.\n\nThe pinning of the executor binary breaks upgrades and in particular\nit penalizes the distributions which make use of the features which\nwere previously added to avoid bugs and inefficiency during upgrades.\n\nWhen the executor is linked statically, there is a smaller chance that it'll\nfail to load libraries. The issue can still occur because other libraries, not\nour own, are linked dynamically.\n\n(cherry picked from commit d59cae6cebd0fc25a16a020bd28e5303901f1b19)","shortMessageHtmlLink":"meson: add option to build systemd-executor \"statically\""}},{"before":"d59cae6cebd0fc25a16a020bd28e5303901f1b19","after":null,"ref":"refs/heads/link-executor-statically","pushedAt":"2024-07-08T10:46:44.000Z","pushType":"branch_deletion","commitsCount":0,"pusher":{"login":"keszybz","name":"Zbigniew Jędrzejewski-Szmek","path":"/keszybz","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/349618?s=80&v=4"}},{"before":null,"after":"d59cae6cebd0fc25a16a020bd28e5303901f1b19","ref":"refs/heads/link-executor-statically","pushedAt":"2024-07-03T15:29:59.000Z","pushType":"branch_creation","commitsCount":0,"pusher":{"login":"keszybz","name":"Zbigniew Jędrzejewski-Szmek","path":"/keszybz","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/349618?s=80&v=4"},"commit":{"message":"meson: add option to build systemd-executor \"statically\"\n\nThe new link-executor-shared option is similar to the existing\nlink-udev-shared: when set to false, we link to the static versions of our\ninternal libraries.\n\nThe resulting exuctor binary is fairly large, about as large as libsystemd-core\n(14 MB without lto, 8 with lto).\n\nThis is intended as a workaround for the fuckup with the pinned executor\nbinary:\nwhen an upgrade is performed, the package manager will install new version of\nthe libraries and new version of the code, and some time later reexecute the\nmanagers. This creates a window when the pinned executor binary will fail to\nexecute. There are two factors which make the issue easier to hit:\n\n- when the distribution uses a finely-grained shared-lib-tag. E.g. Fedora\n  uses version-release as the tag, which means that the issue occurs on\n  every package upgrade. This is the right thing to do, because the\n  ABI of our internal libraries is not stable at all, so replacing the\n  library from a different version in place creates a window where our\n  programs may crash or misbehave.\n\n- when the distribution doesn't immediately reexec all the managers after\n  upgrade. In early versions of systemd, we used to hammer the machine during\n  upgrade, doing daemon-reexecs repeatedly. This works, but is ugly and\n  wasteful. Doing the reexecs while the upgrade is in progres also creates a\n  window where a mix of old and new configs or both is loaded. Users are\n  particularly annoyed by those reloads if there is some issue in the\n  configuration causing us to emit warnings on every reexec. Doing the\n  reexecs once after the new configuration and libraries have been put\n  in place is nicer.\n\nThe pinning of the executor binary breaks upgrades and in particular\nit penalizes the distributions which make use of the features which\nwere previously added to avoid bugs and inefficiency during upgrades.\n\nWhen the executor is linked statically, there is a smaller chance that it'll\nfail to load libraries. The issue can still occur because other libraries, not\nour own, are linked dynamically.","shortMessageHtmlLink":"meson: add option to build systemd-executor \"statically\""}},{"before":null,"after":"39b20faa1b558d1a349b67b9c1c3b44b67af9659","ref":"refs/heads/fetch-distro","pushedAt":"2024-07-03T14:24:45.000Z","pushType":"branch_creation","commitsCount":0,"pusher":{"login":"keszybz","name":"Zbigniew Jędrzejewski-Szmek","path":"/keszybz","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/349618?s=80&v=4"},"commit":{"message":"tools/fetch-distro: switch to the target branch\n\nWe switch opensuse from \"factory\" to \"devel\". I had an old checkout that was\nusing the stale branch.","shortMessageHtmlLink":"tools/fetch-distro: switch to the target branch"}}],"hasNextPage":true,"hasPreviousPage":false,"activityType":"all","actor":null,"timePeriod":"all","sort":"DESC","perPage":30,"startCursor":"Y3Vyc29yOnYyOpK7MjAyNC0wOS0yN1QxODoyMzo1MS4wMDAwMDBazwAAAATC6I03","endCursor":"Y3Vyc29yOnYyOpK7MjAyNC0wNy0wM1QxNDoyNDo0NS4wMDAwMDBazwAAAAR1-xL0"}},"title":"Activity · keszybz/systemd"}