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  1. Lustre
  2. LU-8683

readahead: update ras window correctly

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: Lustre 2.9.0
    • Fix Version/s: Lustre 2.9.0
    • Labels:
      None
    • Severity:
      3
    • Rank (Obsolete):
      9223372036854775807

      Description

      When stride-RA hit case miss, we only reset normal sequential read-ahead window, but not reset the stride IO to avoid the overhead of re-detecting stride IO. While when the normal RA window is set to not insect with the stride-RA window, when we try to increase the stride-RA window length later, the presumption does not hold.

      This patch resets the stride IO as well in this case.

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            • Assignee:
              bobijam Zhenyu Xu
              Reporter:
              bobijam Zhenyu Xu
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              Dates

              • Created:
                Updated:
                Resolved: