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  1. Lustre
  2. LU-15011

implement lod pool spilling

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    • Improvement
    • Resolution: Fixed
    • Minor
    • Lustre 2.15.0
    • None
    • None
    • 9223372036854775807

    Description

      If an OST pool becomes full, allow configuring a global default spill target to hold files that could not be written due to the pool running out of space. This is similar to SEL, but implemented at the pool selection level, rather than on a per-write basis. While SEL is probably flexible (essentially it implements pool spill on a per-component basis), very few users know enough about SEL to use it effectively, and any changes to the SEL configuration would require updating every file that is using a particualr SEL layout. In contrast, pool spill is a tunable on the MDS (for each source pool) and affects all existing layouts using that pool if there is a spill target pool and used space threshold specified.

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              bzzz Alex Zhuravlev
              adilger Andreas Dilger
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