[jira] [Created] (MESOS-6478) "filesystem/linux" isolator leaks (phantom) mounts in `mount` output

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

Yan Xu created MESOS-6478:
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             Summary: "filesystem/linux" isolator leaks (phantom) mounts in `mount` output
                 Key: MESOS-6478
                 URL: https://issues.apache.org/jira/browse/MESOS-6478
             Project: Mesos
          Issue Type: Bug
          Components: containerization
            Reporter: Yan Xu
            Priority: Minor


After running the tests I can find these with {{mount}}:

{noformat:title=sample errors, there are many more}
/tmp/LinuxFilesystemIsolatorTest_ROOT_Metrics_jHFTIO on /tmp/LinuxFilesystemIsolatorTest_ROOT_Metrics_jHFTIO type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_VolumeFromHost_W0T33m on /tmp/LinuxFilesystemIsolatorTest_ROOT_VolumeFromHost_W0T33m type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_VolumeFromHostSandboxMountPoint_mGd8ff on /tmp/LinuxFilesystemIsolatorTest_ROOT_VolumeFromHostSandboxMountPoint_mGd8ff type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_ChangeRootFilesystem_uMlTqr on /tmp/LinuxFilesystemIsolatorTest_ROOT_ChangeRootFilesystem_uMlTqr type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_FileVolumeFromHostSandboxMountPoint_tU9FqX on /tmp/LinuxFilesystemIsolatorTest_ROOT_FileVolumeFromHostSandboxMountPoint_tU9FqX type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_PersistentVolumeWithoutRootFilesystem_94nMdN on /tmp/LinuxFilesystemIsolatorTest_ROOT_PersistentVolumeWithoutRootFilesystem_94nMdN type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_PersistentVolumeWithRootFilesystem_cy8INw on /tmp/LinuxFilesystemIsolatorTest_ROOT_PersistentVolumeWithRootFilesystem_cy8INw type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_MultipleContainers_ot2j9R on /tmp/LinuxFilesystemIsolatorTest_ROOT_MultipleContainers_ot2j9R type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_WorkDirMountNotNeeded_S0frNw on /tmp/LinuxFilesystemIsolatorTest_ROOT_WorkDirMountNotNeeded_S0frNw type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_WorkDirMountNeeded_OH3VdQ on /tmp/LinuxFilesystemIsolatorTest_ROOT_WorkDirMountNeeded_OH3VdQ type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_WorkDirMountNeeded_OH3VdQ/slave on /tmp/LinuxFilesystemIsolatorTest_ROOT_WorkDirMountNeeded_OH3VdQ/slave type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_VolumeFromSandbox_1ILVSa on /tmp/LinuxFilesystemIsolatorTest_ROOT_VolumeFromSandbox_1ILVSa type none (rw,bind)
/tmp/LinuxFilesystemIsolatorTest_ROOT_FileVolumeFromHost_PKSGpm on /tmp/LinuxFilesystemIsolatorTest_ROOT_FileVolumeFromHost_PKSGpm type none (rw,bind)
{noformat}

Of course these don't exist and they are gone from {{/proc/mounts}} but I imagine these could look scary when after running the agent for a while. Perhaps we can improve the Mesos mount utility to take care of these so they don't leave these traces?



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