Re: [systemd-devel] systemctl how to stop a service

[Reindl Harald]

Am 16.05.2016 um 12:53 schrieb Andrei Borzenkov:

16.05.2016 13:28, Reindl Harald пишет:

Am 16.05.2016 um 08:58 schrieb Andrei Borzenkov:

16.05.2016 09:01, liuxueping пишет:

Do you mean to say that systemctl will return a value when the process
is still at terminate gracefully?

By default systemctl should wait for stop job to complete. What may
happen - if it takes more time than JobTimeout, job is canceled while
systemd is still trying to terminate unit. At least so is my
understanding

IT DON'T RELIEABLE - my harddisks still making a lot of nosie by
suspending 3 VMware guests on a RAOD10 with 4 different disks and i have
observed similar behavior for single services too

[root@srv-rhsoft:~]$ time systemctl stop vmware-guest.target
real    0m2.484s
user    0m0.007s
sys     0m0.010s

[root@srv-rhsoft:~]$ systemctl status vmware-guest.target
vmware-guest.target - VMware Guest Group
   Loaded: loaded (/etc/systemd/system/vmware-guest.target; enabled;
vendor preset: disabled)
   Active: inactive (dead) since Mo 2016-05-16 12:25:18 CEST; 1min 19s ago

Mai 16 12:25:18 srv-rhsoft.rhsoft.net systemd[1]: Stopped target VMware
Guest Group.
Mai 16 12:25:18 srv-rhsoft.rhsoft.net systemd[1]: Stopping VMware Guest
Group.
Warning: Journal has been rotated since unit was started. Log output is
incomplete or unavailable.

I am not sure what this example illustrates. Targets do not start or
stop anything; so stopping *target* does indeed happen instantaneously.
Unless stopping target causes services to be stopped *and* target is
configured to be stopped *after* services

see also https://bugzilla.redhat.com/show_bug.cgi?id=1123557

[root@srv-rhsoft:~]$ cat /etc/systemd/system/vmware-guest.target
[Unit]
Description=VMware Guest Group

Requires=vmware.service vmware-modules.service vmware-vmnet.service
Wants=guest-buildserver64.service
Wants=guest-arrakis.service
Wants=guest-testserver.service
Wants=display-manager.service

[Install]
WantedBy=graphical.target

well, normally one would expect that he can rely on the the parts of the target (the services) are *really* stopped when it returns After=vmware.service vmware.target network-wan-bridge.service display-manager.service

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