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  1. Lustre
  2. LU-19568

increase llog chunk size as catalog becomes more full

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Details

    • Improvement
    • Resolution: Unresolved
    • Medium
    • None
    • Lustre 2.17.0
    • 3
    • 9223372036854775807

    Description

      It would be useful to dynamically increase (or decrease) the llog chunk size to allow more records to be stored in the Changelog (or other llog) if it is becoming full. On the one hand, having smaller llog chunk size allows faster llog file rotation, but imposes a limitation on the total number of records in the llog file.

      With the 8192-byte minimum llog chunk size there is a limit of 4.2B records. Increasing the chunk size linearly increases the number of records that can be stored in each llog file.

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            wc-triage WC Triage
            adilger Andreas Dilger
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              Created:
              Updated: