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  1. Lustre
  2. LU-11347

Do not use pagecache for SSD I/O when read/write cache are disabled

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    • 9223372036854775807

    Description

      For SSD optimization, disable pagecache for IO when:

      • non-rotational storage is used
      • when both read and write caches are disabled

      Attachments

        1. ost_io.svg
          433 kB
          Andreas Dilger

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-5375 Failure on test suite sanity test_151 test_156: roc_hit is not safe to use

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

          Bug - A problem which impairs or prevents the functions of the product. LU-13680 large allocations in osd_bufs_get() failing

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

          Improvement - An improvement or enhancement to an existing feature or task. LU-12179 allocate continuous pages when disabled page caches

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

          Improvement - An improvement or enhancement to an existing feature or task. LU-9252 osd: Cannot really disable cache on OSS

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

          Improvement - An improvement or enhancement to an existing feature or task. LU-11164 lvbo_*() methods to reuse env

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

          Improvement - An improvement or enhancement to an existing feature or task. LU-12071 bypass pagecache for large files

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

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              bzzz Alex Zhuravlev
              jgmitter Joseph Gmitter (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: