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action #39893

closed

warning message about "Failed creating CGroup subtree 'mkdir /sys/fs/cgroup//var: Read-only file system at /usr/lib/perl5/vendor_perl/5.18.2/Mojo/File.pm line 72."

Added by okurz about 6 years ago. Updated about 6 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
-
Category:
Regressions/Crashes
Target version:
-
Start date:
2018-08-17
Due date:
% Done:

0%

Estimated time:

Description

E.g. observed in https://openqa.opensuse.org/tests/734376/file/worker-log.txt

If this "warning" is acceptable it should be phrased in a less severe way or maybe just fixed on o3


Related issues 2 (0 open2 closed)

Related to openQA Project - action #33037: dead children uncaught (again)ResolvedEDiGiacinto2018-03-10

Actions
Related to openQA Project - action #41102: Stale qemu processes are left againResolvedEDiGiacinto2018-09-15

Actions
Actions #1

Updated by EDiGiacinto about 6 years ago

Can you tell the systemd version installed in that host? Can you also confirm that the service file of that worker is containing the following line https://github.com/os-autoinst/openQA/blob/master/systemd/openqa-worker%40.service#L19 ?

Originally that message was a (non-fatal), but error.

That basically cames from when openQA tries to setup automatically cgroups (to avoid stale QEMU processes that could be left over from test execution runs). Imho it's needed on worker side to be sure that os-autoinst is not leaving anything behind; so i consider it pretty important feature, as otherwise will bring back things like: https://progress.opensuse.org/issues/6958

Actions #2

Updated by EDiGiacinto about 6 years ago

Actions #3

Updated by okurz about 6 years ago

EDiGiacinto wrote:

Can you tell the systemd version installed in that host?

The host is openqaworker1, openSUSE Leap 42.3 with systemd 228-47.1 from openSUSE-Leap-42.3-Update

Can you also confirm that the service file of that worker is containing the following line https://github.com/os-autoinst/openQA/blob/master/systemd/openqa-worker%40.service#L19 ?

Yes, the file /usr/lib/systemd/system/openqa-worker@.service includes Delegate=yes

Originally that message was a (non-fatal), but error.

That basically cames from when openQA tries to setup automatically cgroups (to avoid stale QEMU processes that could be left over from test execution runs). Imho it's needed on worker side to be sure that os-autoinst is not leaving anything behind; so i consider it pretty important feature, as otherwise will bring back things like: https://progress.opensuse.org/issues/6958

I see, make sense to have it warning then. Then however we should investigate why we have it on this host then?

Actions #4

Updated by EDiGiacinto about 6 years ago

okurz wrote:

EDiGiacinto wrote:

Can you tell the systemd version installed in that host?

The host is openqaworker1, openSUSE Leap 42.3 with systemd 228-47.1 from openSUSE-Leap-42.3-Update

Can you also confirm that the service file of that worker is containing the following line https://github.com/os-autoinst/openQA/blob/master/systemd/openqa-worker%40.service#L19 ?

Yes, the file /usr/lib/systemd/system/openqa-worker@.service includes Delegate=yes

Originally that message was a (non-fatal), but error.

That basically cames from when openQA tries to setup automatically cgroups (to avoid stale QEMU processes that could be left over from test execution runs). Imho it's needed on worker side to be sure that os-autoinst is not leaving anything behind; so i consider it pretty important feature, as otherwise will bring back things like: https://progress.opensuse.org/issues/6958

I see, make sense to have it warning then. Then however we should investigate why we have it on this host then?

Thanks for the detailed info, yes this definetly needs investigation, also in new systemd versions, Delegate is not a bool explictly anymore ( so we will have to adapt anyway, as there were changes upstream )

Actions #5

Updated by EDiGiacinto about 6 years ago

  • Related to action #41102: Stale qemu processes are left again added
Actions #6

Updated by EDiGiacinto about 6 years ago

  • Status changed from New to In Progress

Forgot to mark this one as solved, changes to address this were merged PR: https://github.com/os-autoinst/openQA/pull/1794

Actions #7

Updated by EDiGiacinto about 6 years ago

  • Status changed from In Progress to Resolved
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