[jira] [Created] (MESOS-6541) Mesos test should mount cgroups_root

["Yan Xu (JIRA)" <ji...@apache.org>]

Yan Xu created MESOS-6541:
-----------------------------

             Summary: Mesos test should mount cgroups_root
                 Key: MESOS-6541
                 URL: https://issues.apache.org/jira/browse/MESOS-6541
             Project: Mesos
          Issue Type: Bug
          Components: test
            Reporter: Yan Xu


Currently on hosts without prior cgroups setup and sysfs is mounted at /sys, mesos tests would fail like this:

{noformat:title=}
[ RUN      ] HTTPCommandExecutorTest.TerminateWithACK
F1103 19:54:40.807538 439804 command_executor_tests.cpp:236] CHECK_SOME(_containerizer): Failed to create launcher: Failed to create Linux launcher: Failed to mount cgroups hierarchy at '/sys/fs/cgroup/fr
eezer': Failed to create directory '/sys/fs/cgroup/freezer': No such file or directory
{noformat}

This is because the agent chooses to use {{LinuxLauncher}} based on availability of the {{freezer}} subsystem alone. However for it to work, one needs to do the following

{noformat:title=}
mount -t tmpfs cgroup_root /sys/fs/cgroup
{noformat}

in order to make  {{/sys/fs/cgroup}} writable. 

I have always run the command manually in the past when this failure happens but this could be baffling especially to new developers. Mesos tests should just mount it if it's not already done.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)