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  1. Lustre
  2. LU-1707

Add llapi_* function to return the OST/MDT count for a path.

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Details

    • Improvement
    • Resolution: Unresolved
    • Minor
    • None
    • None
    • 10514

    Description

      It would be valuable to programmatically discover the number of OSTs that are available. An llapi_* function would be a suitable place for this call.

      Use Case

      When writing HDF5 files one typically configures the number of writers as a fraction of the number of OSTs for best performance.

      Currently this information is only available by writing a file with stripe count set to -1 and then counting the number of stripes present. A programmatic interface to the OST count would simplify this task.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-2182 Add llapi_file_get_layout() function in liblustreapi

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. LU-5969 Create an LGPL version of liblustreapi

          • Major - Major loss of function.
          • Open

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              wc-triage WC Triage
              rhenwood Richard Henwood (Inactive)
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              Dates

                Created:
                Updated: