Thank you, Dan.
The PPA build indeed fixes the test case in #8, for Xenial at the very least.
Sending SIGABRT to foo.service's process now causes services to restart, just
as intended. Here are the logs from the very same Xenial machine, as in #8:
$ sudo apt install systemd=229-4ubuntu21.28~next20200212b2
<...>
$ sudo systemctl daemon-reexec
$ sudo systemctl status foo bar
● foo.service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset:
enabled)
Active: active (running) since Thu 2020-02-13 11:04:06 MSK; 5min ago
Main PID: 4753 (sleep)
CGroup: /system.slice/foo.service
└─4753 /bin/sleep infinity
Feb 13 11:04:06 pono-mac systemd[1]: Started foo.service.
● bar.service
Loaded: loaded (/etc/systemd/system/bar.service; static; vendor preset:
enabled)
Active: active (running) since Thu 2020-02-13 11:04:06 MSK; 5min ago
Main PID: 4759 (sleep)
CGroup: /system.slice/bar.service
└─4759 /bin/sleep infinity
Feb 13 11:04:06 pono-mac systemd[1]: Started bar.service.
$ sudo kill -6 4753
$ sudo systemctl status foo bar
● foo.service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset:
enabled)
Active: active (running) since Thu 2020-02-13 11:12:05 MSK; 2s ago
Main PID: 11122 (sleep)
Tasks: 1
Memory: 200.0K
CPU: 1ms
CGroup: /system.slice/foo.service
└─11122 /bin/sleep infinity
Feb 13 11:12:05 pono-mac systemd[1]: Stopped foo.service.
Feb 13 11:12:05 pono-mac systemd[1]: Started foo.service.
● bar.service
Loaded: loaded (/etc/systemd/system/bar.service; static; vendor preset:
enabled)
Active: active (running) since Thu 2020-02-13 11:12:05 MSK; 2s ago
Main PID: 11123 (sleep)
Tasks: 1
Memory: 224.0K
CPU: 1ms
CGroup: /system.slice/bar.service
└─11123 /bin/sleep infinity
Feb 13 11:12:05 pono-mac systemd[1]: Started bar.service.
I'll test it with Bionic in a few hours.
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https://bugs.launchpad.net/bugs/1839290
Title:
systemd doesn't restart a service after crashes
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