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https://issues.apache.org/jira/browse/MESOS-4053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15196968#comment-15196968
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haosdent commented on MESOS-4053:
---------------------------------
If this test failed because of
{code}
(cgroups::destroy(hierarchy, cgroup)).failure(): Failed to remove cgroup
'/sys/fs/cgroup/perf_event/mesos_test': Device or resource busy
{code}
It is not because of the error of this case. It is because of some test cases
like
{code}
CgroupsAnyHierarchyWithPerfEventTest.ROOT_CGROUPS_Perf
{code}
failed and the process still exists in cgroup so that the cgroup could not be
removed successfully. I have a patch maybe related to this which wait for the
process exited. https://reviews.apache.org/r/43284/
> MemoryPressureMesosTest tests fail on CentOS 6.6
> ------------------------------------------------
>
> Key: MESOS-4053
> URL: https://issues.apache.org/jira/browse/MESOS-4053
> Project: Mesos
> Issue Type: Bug
> Environment: CentOS 6.6
> Reporter: Greg Mann
> Assignee: Benjamin Hindman
> Labels: mesosphere, test-failure
>
> {{MemoryPressureMesosTest.CGROUPS_ROOT_Statistics}} and
> {{MemoryPressureMesosTest.CGROUPS_ROOT_SlaveRecovery}} fail on CentOS 6.6. It
> seems that mounted cgroups are not properly cleaned up after previous tests,
> so multiple hierarchies are detected and thus an error is produced:
> {code}
> [ RUN ] MemoryPressureMesosTest.CGROUPS_ROOT_Statistics
> ../../src/tests/mesos.cpp:849: Failure
> Value of: _baseHierarchy.get()
> Actual: "/cgroup"
> Expected: baseHierarchy
> Which is: "/tmp/mesos_test_cgroup"
> -------------------------------------------------------------
> Multiple cgroups base hierarchies detected:
> '/tmp/mesos_test_cgroup'
> '/cgroup'
> Mesos does not support multiple cgroups base hierarchies.
> Please unmount the corresponding (or all) subsystems.
> -------------------------------------------------------------
> ../../src/tests/mesos.cpp:932: Failure
> (cgroups::destroy(hierarchy, cgroup)).failure(): Failed to remove cgroup
> '/tmp/mesos_test_cgroup/perf_event/mesos_test': Device or resource busy
> [ FAILED ] MemoryPressureMesosTest.CGROUPS_ROOT_Statistics (12 ms)
> [ RUN ] MemoryPressureMesosTest.CGROUPS_ROOT_SlaveRecovery
> ../../src/tests/mesos.cpp:849: Failure
> Value of: _baseHierarchy.get()
> Actual: "/cgroup"
> Expected: baseHierarchy
> Which is: "/tmp/mesos_test_cgroup"
> -------------------------------------------------------------
> Multiple cgroups base hierarchies detected:
> '/tmp/mesos_test_cgroup'
> '/cgroup'
> Mesos does not support multiple cgroups base hierarchies.
> Please unmount the corresponding (or all) subsystems.
> -------------------------------------------------------------
> ../../src/tests/mesos.cpp:932: Failure
> (cgroups::destroy(hierarchy, cgroup)).failure(): Failed to remove cgroup
> '/tmp/mesos_test_cgroup/perf_event/mesos_test': Device or resource busy
> [ FAILED ] MemoryPressureMesosTest.CGROUPS_ROOT_SlaveRecovery (7 ms)
> {code}
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