[Bugs] [Bug 1375959] Files not being opened with o_direct flag during random read operation ( Glusterfs 3.8.2)

bugzilla at redhat.com bugzilla at redhat.com
Thu Sep 15 18:30:27 UTC 2016


Shekhar Berry <shberry at redhat.com> changed:

           What    |Removed                     |Added
              Flags|needinfo?(shberry at redhat.co |
                   |m)                          |

--- Comment #10 from Shekhar Berry <shberry at redhat.com> ---

Thanks for looking into the bug.

Here are couple of my comments:

1) did you invoke the fio command when your current working directory was the
glusterfs mount point itself?

No, I am using pbench_fio for my testing and it stores run logs under
/var/lib/pbench-agent. Just FYI, I am not invoking pbench_fio from gluster
mount point itself :)

2) I redid the test with performance.open-behind: off and
performance.strict-o-direct: on option. The results are no different in my
setup.I am still seeing full cache utilization. 

I have not captured strace under this setting. I can capture and share that
with you if required.


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