** Description changed: [Impact] On Ubuntu Core we recently hit the a race in daemon-reload and systemctl twice. This race is fixed in systemd upstream: "fix race between daemon-reload and other commands #8803". + + Note that this is a general problem in systemd with daemon-reload and + systemctl commands, we just happen to hit it more often on Ubuntu Core + but the test-case below explodes just fine on a normal Ubuntu release + like 16.04 or 18.04 (not on 18.10+ as its fixed there). [TEST CASE] To reproduce its enough to run: for i in $(seq 50); do systemctl daemon-reload & systemctl start ssh & done This will result in "systemctl start ssh" hanging in ppoll. With the patch applied the hangs go away. [REGRESSION POTENTIAL] Low, this change is already in the systemd upstream and in use cosmic and later. The upstream fix is https://github.com/systemd/systemd/pull/8803 + Full spread run with the fixed systemd in the "core" snap and a regression test: https://github.com/snapcore/snapd/pull/6595
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1819728 Title: Please backport "fix race between daemon-reload and other commands #8803" to 16.04 (for UC16) and 18.04 (for UC18) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1819728/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
