From 52c67fcdd6dadc4138ecad73e65599551804d445 Mon Sep 17 00:00:00 2001 From: Coly Li Date: Tue, 15 Feb 2022 21:34:15 +0800 Subject: [PATCH 012/120] mdadm/systemd: remove KillMode=none from service file For mdadm's systemd configuration, current systemd KillMode is "none" in following service files, - mdadm-grow-continue@.service - mdmon@.service This "none" mode is strongly againsted by systemd developers (see man 5 systemd.kill for "KillMode=" section), and is considering to remove in future systemd version. As systemd developer explained in disuccsion, the systemd kill process is, 1. send the signal specified by KillSignal= to the list of processes (if any), TERM is the default 2. wait until either the target of process(es) exit or a timeout expires 3. if the timeout expires send the signal specified by FinalKillSignal=, KILL is the default For "control-group", all remaining processes will receive the SIGTERM signal (by default) and if there are still processes after a period f time, they will get the SIGKILL signal. For "mixed", only the main process will receive the SIGTERM signal, and if there are still processes after a period of time, all remaining processes (including the main one) will receive the SIGKILL signal. From the above comment, currently KillMode=control-group is a proper kill mode. Since control-gropu is the default kill mode, the fix can be simply removing KillMode=none line from the service file, then the default mode will take effect. Signed-off-by: Coly Li Cc: Benjamin Brunner Cc: Franck Bui Cc: Jes Sorensen Cc: Mariusz Tkaczyk Cc: Neil Brown Cc: Xiao Ni Signed-off-by: Jes Sorensen --- systemd/mdadm-grow-continue@.service | 1 - systemd/mdmon@.service | 1 - 2 files changed, 2 deletions(-) diff --git a/systemd/mdadm-grow-continue@.service b/systemd/mdadm-grow-continue@.service index 5c667d2a..9fdc8ec7 100644 --- a/systemd/mdadm-grow-continue@.service +++ b/systemd/mdadm-grow-continue@.service @@ -14,4 +14,3 @@ ExecStart=BINDIR/mdadm --grow --continue /dev/%I StandardInput=null StandardOutput=null StandardError=null -KillMode=none diff --git a/systemd/mdmon@.service b/systemd/mdmon@.service index 85a3a7c5..77533958 100644 --- a/systemd/mdmon@.service +++ b/systemd/mdmon@.service @@ -25,4 +25,3 @@ Type=forking # it out) and systemd will remove it when transitioning from # initramfs to rootfs. #PIDFile=/run/mdadm/%I.pid -KillMode=none -- 2.38.1