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  1. Lustre
  2. LU-10946

add an interface to load ldiskfs block bitmaps

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Minor
    • Resolution: Won't Fix
    • Affects Version/s: None
    • Fix Version/s: None
    • Labels:
    • Rank (Obsolete):
      9223372036854775807

      Description

      During our benchmarking/testing, we found sometimes write performances are not stable enough and there are some small read during write which could drop thoughoutput of write performances.

      It turned out that block bitmaps load make some latency here, also for a heavy fragment filesystem, we might need load many bitmaps to find some free blocks.

      To improve above situation, we had a patch to load block bitmaps to memory and pin those bitmaps memory until unmount or we release the memory on purpose, this could stable write performances and improve performances of a heavy fragment filesystem.

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              • Assignee:
                wshilong Wang Shilong
                Reporter:
                wangshilong Wang Shilong (Inactive)
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                • Created:
                  Updated:
                  Resolved: