James Peach created MESOS-9418:
----------------------------------
Summary: CgroupsIsolatorTest.ROOT_CGROUPS_BlkioUsage fails on 4.19
kernels
Key: MESOS-9418
URL: https://issues.apache.org/jira/browse/MESOS-9418
Project: Mesos
Issue Type: Bug
Components: containerization, test
Reporter: James Peach
The {{CgroupsIsolatorTest.ROOT_CGROUPS_BlkioUsage}} test fails on Linux 4.19
kernels.
{noformat}
[jpeach@jpeach mesos]$ uname -r
4.19.3-300.fc29.x86_64
[jpeach@jpeach build]$ sudo env GLOG_v=1 ./src/mesos-tests --verbose
--gtest_filter=CgroupsIsolatorTest.ROOT_CGROUPS_BlkioUsage
...
W1126 10:45:44.941278 30021 cgroups.cpp:895] Skipping resource statistic for
container 8f67e5f9-ebf0-436c-a1d2-f30c69883a27 because: Failed to parse blkio
value '8:0 Discard 0' from 'blkio.io_service_bytes': Invalid major:minor device
number: 'Discard'
../../../src/tests/containerizer/cgroups_isolator_tests.cpp:1890: Failure
Value of: usage->has_blkio_statistics()
Actual: false
Expected: true
../../../src/tests/containerizer/cgroups_isolator_tests.cpp:1891: Failure
Expected: (2) <= (usage->blkio_statistics().throttling_size()), actual: 2 vs 0
../../../src/tests/containerizer/cgroups_isolator_tests.cpp:1902: Failure
totalThrottling is NONE
mesos-tests: ../../../3rdparty/stout/include/stout/option.hpp:119: T
&Option<mesos::CgroupInfo_Blkio_Throttling_Statistics>::get() & [T =
mesos::CgroupInfo_Blkio_Throttling_Statistics]: Assertion `isSome()' failed.
...
{noformat}
The actual cgroup format is:
{noformat}
[jpeach@jpeach blkio]$ pwd
/sys/fs/cgroup/blkio
[jpeach@jpeach blkio]$ cat
mesos_test_e9c8e0aa-3172-4d8d-b216-c8f5286a7efc/blkio.io_service_bytes
8:0 Read 0
8:0 Write 0
8:0 Sync 0
8:0 Async 0
8:0 Discard 0
8:0 Total 0
Total 0
{noformat}
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