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  1. Lustre
  2. LU-16049

configuration option to sync data on file close

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    • Improvement
    • Resolution: Unresolved
    • Minor
    • None
    • None
    • None
    • 9223372036854775807

    Description

      For applications that expect NFS-like behavior with data flush on file close, and do not call fsync() on the file, it would be useful to provide a per-mountpoint tunable parameter and mount option that forces file data to be sync'd to the target, something like "llite.*.sync_on_close" and "-o sync_on_close", or similar. Better would be a per-directory flag that is inherited by files created therein, so that applications or administrators can set this for specific apps/users that need such semantics.

      This would have a potentially large impact for workloads that are writing a large number of small files (e.g. tar), so it should default to "off", and only be enabled specifically for workloads that expect it.

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          is related to

          New Feature - A new feature of the product, which has yet to be developed. LU-17329 Relaxed POSIX Consistency for Lustre

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

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              wc-triage WC Triage
              adilger Andreas Dilger
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              Dates

                Created:
                Updated: