Bug 883421
| Summary: | forking type service with BusName assigned stucks in "deactivating" state | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jan Vcelak <jvcelak> |
| Component: | systemd | Assignee: | Michal Schmidt <mschmidt> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 18 | CC: | alonbl, johannbg, jskarvad, lnykryn, metherid, mschmidt, msekleta, notting, plautrba, systemd-maint, tsmetana, vpavlin |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-02-05 22:54:13 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
I can reproduce this. Some observations so far: - systemd produces a warning "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", which is clearly incorrect, because the name is not ignored. The name is used as an indirect source to detect the main PID of the service. - The utility of this kind of detection is dubious. Its interaction with the detection from PIDFile is undocumented and racy. - It's also buggy: After a successful detection of the main PID it fails to add this PID to the set of PIDs watched by the manager. Consequently, when the SIGCHLD finally arrives for the PID, the service unit is not notified. - There is a fallback in manager_dispatch_sigchld() to map the PID to the unit using the cgroup. This does not seem to work. The task is a zombie by then and zombies lose their cgroup membership, I think. This message is a reminder that Fedora 18 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 18. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '18'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 18's end of life. Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 18 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior to Fedora 18's end of life. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 18 changed to end-of-life (EOL) status on 2014-01-14. Fedora 18 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. |
Description of problem: This is a content of a service file provided by tuned package: [Unit] Description=Dynamic System Tuning Daemon After=syslog.target [Service] Type=forking PIDFile=/run/tuned/tuned.pid BusName=com.redhat.tuned ExecStart=/usr/sbin/tuned -d [Install] WantedBy=multi-user.target Tuned is a forking service, but it also provides a DBus interface. (We do not use DBus activation yet.) Documentation recommends to set BusName= even if we are forking service. Version-Release number of selected component (if applicable): systemd-195-8.fc18.x86_64 tuned-2.1.0-1.fc18.noarch dbus-1.6.8-2.fc18.x86_64 How reproducible: with some luck Steps to Reproduce: 1. systemctl start tuned 2. systemctl stop tuned 3. systemctl start tuned 4. systemctl stop tuned 5. ... Actual results: After a few "rounds" 'systemctl stop tuned' will hang. $ systemctl status tuned # in other terminal tuned.service - Dynamic System Tuning Daemon Loaded: loaded (/usr/lib/systemd/system/tuned.service; disabled) Active: deactivating (stop-sigkill) (Result: timeout) since Tue, 2012-12-04 14:54:48 CET; 1min 34s ago Process: 3980 ExecStart=/usr/sbin/tuned -d (code=exited, status=0/SUCCESS) Main PID: 3982 CGroup: name=systemd:/system/tuned.service Now I have to wait till the internal timeout expires and tuned is considered as stopped. Expected results: Systemd considers tuned to be stopped after the tuned daemon terminates. Additional info: If I comment out BusName= in service file, everything seems to work fine.