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  1. Lustre
  2. LU-19967

take extent tree depth and sb into account for credits calculation

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    • Icon: Bug Bug
    • Resolution: Fixed
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    • Lustre 2.18.0
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    • 3
    • 9223372036854775807

      current logic is not correct

                      depth = inode != NULL ? ext_depth(inode) : 0;
                depth = min(max(depth, 1) + 3, LDISKFS_MAX_EXTENT_DEPTH);
                credits = depth;

      depth can't grow by 3 in a single transaction.
      rather it should be like:

                      depth = inode != NULL ? ext_depth(inode) : 0;
                depth = min(max(depth, 1) + 1, LDISKFS_MAX_EXTENT_DEPTH);
                credits = (depth-1) * 2;

            bzzz Alex Zhuravlev
            bzzz Alex Zhuravlev
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              Created:
              Updated:
              Resolved: