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  1. Lustre
  2. LU-9347

Getting BLKSSZGET using ioctl

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Details

    • Question/Request
    • Resolution: Fixed
    • Minor
    • Lustre 2.10.1, Lustre 2.11.0
    • Lustre 2.7.0
    • None
    • 9223372036854775807

    Description

      According to my web searches, the approved way to find out the
      needed alignment for the i/o is the result of the BLKSSZGET ioctl:

      ioctl (fd, BLKSSZGET, &(align))

      However, on Lustre we get the error:

      Inappropriate ioctl for device

      Is this ioctl supported and I'm just doing it wrong?
      Or is this ioctl indeed not allowed on Lustre ? And if so,
      what is the approved way to find out the alignment ?

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            emoly.liu Emoly Liu
            mhanafi Mahmoud Hanafi
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              Created:
              Updated:
              Resolved: