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  1. Lustre
  2. LU-8410

fiemap vs walk race

Details

    • Bug
    • Resolution: Fixed
    • Major
    • Lustre 2.9.0
    • None
    • 3
    • 9223372036854775807

    Description

      Alexey Lyashkov have troubles with accessing this jira and asked my to create this issue. Here is problem description from him:

      RHEL6.5 have a backported a upstream commit 91dd8c114499e9818f2d5919ef0b9eee61810220, which broke a lustre extent handing on OFD. But Intel have a copy-paste unfixed code and use with RHEL 6.5 and up code. It's looks wrong as it have don't fixed a fiemap vs walk race while fiemap used in lustre code now (lustre commit - 144b5a65c16f1bca81ae76010528a592c821308b)
      it may produce an predictable results with memory corruption.

      attached patch backport a new api from kernel upstream already supported in lustre.

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            wc-triage WC Triage
            artem_blagodarenko Artem Blagodarenko (Inactive)
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            Dates

              Created:
              Updated:
              Resolved: