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  1. MariaDB Server
  2. MDEV-26029

Sparse files are inefficient on thinly provisioned storage

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      The MariaDB implementation of page_compressed tables for InnoDB uses sparse files. In the worst case, in the data file, every data page will consist of some data followed by a hole. This may be extremely inefficient in some file systems.

      If the underlying storage device is thinly provisioned (can compress data on the fly), it would be good to write regular files (with sequences of NUL bytes at the end of each page_compressed block) and let the storage device take care of compressing the data.

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              Assignee:
              marko Marko Mäkelä
              Reporter:
              marko Marko Mäkelä
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