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  1. Lustre
  2. LU-4931

New feature of giving server/storage side advice of accessing file

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Details

    • New Feature
    • Resolution: Fixed
    • Major
    • Lustre 2.9.0
    • None
    • 13631

    Description

      We implement a new feature which provides new APIs and utils for senior users and smart applications to give advices about the access pattern of Lustre file so as to improve the data/metadata access peformance. It has a similar idea with fadvise64_64(2) or posix_fadvise(2), yet can pass specical advices directly through Lustre client to server/storage side.

      Some tests show that this feature might help us to get performance improvement for some application by giving proper advices in advance.

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          has to be finished together with

          Bug - A problem which impairs or prevents the functions of the product. LUDOC-327 documentation for ladvise feature

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

          Bug - A problem which impairs or prevents the functions of the product. LU-6254 Fix OFD/OSD prefetch for osd-ldiskfs and osd-zfs

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. LU-5561 Lustre random reads: 80% performance loss from 1.8 to 2.6

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-8565 sanity test 255a fails with ‘Speedup with willread is less than X%, got Y%’

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-6671 Wireshark: LDLM_ENQUEUE reply with undecoded buffer

          • 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-8591 allow specifying ZFS blocksize via ladvise

          • 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-8902 Add testing for the llapi_ladvise() API

          • 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-7225 change ladvise wire protocol for lockahead and future usage

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

          New Feature - A new feature of the product, which has yet to be developed. LU-137 ioctl passthrough mechanism for Lustre OST/MDT mountpoints

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

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              lixi Li Xi (Inactive)
              lixi Li Xi (Inactive)
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                Created:
                Updated:
                Resolved: