Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-11190

LSOM size accounting histogram

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: Lustre 2.12.0
    • Fix Version/s: None
    • Labels:
      None
    • Rank (Obsolete):
      9223372036854775807

      Description

      With LSOM data being available on the MDT, it would be possible to automatically create a histogram of file sizes on the MDT. This would be useful for things like DoM planning, and other performance planning.

      As each file's size is recorded, a counter in the matching power-of-two histogram bucket would be incremented, and a flag set in the LMA xattr. When a file with the LMA flag is deleted or the LSOM size is changed to a new bucket, the appropriate histogram bucket would be decremented.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                wc-triage WC Triage
                Reporter:
                adilger Andreas Dilger
              • Votes:
                0 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                • Created:
                  Updated: