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  1. Lustre
  2. LU-10158

FLR2: improve mirror selection policy functions

Details

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

    Description

      For a mirrored file, when it is written at the first time, the policy to pick a replica as primary is primitive in current implementation, either it just chooses the first replica or a random one. A policy function should be defined for replica choosing. At least it should avoid the replicas with unavailable OSTs at this stage.

      Attachments

        Issue Links

          is related to

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. LU-12649 Tracker for ongoing FLR improvements

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

          Technical task - A technical task. LU-17973 FLR2: improve read mirror selection for many copies

          • 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-19066 FLR2: identify rack/PSU failure domains for servers

          • 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-10448 policy to pick a primary for mirrored write

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. LU-9007 Improved object allocator for FLR composite files

          • 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-15834 FLR: "lfs mirror extend" should take current OSTs into account

          • 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-7880 add OST/MDT performance statistics to obd_statfs

          • Major - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. LU-10282 'lfs mirror create|extend' should support mirror flags

          • 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-11963 Add nonrotational flag to obd_statfs

          • 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-12722 exclude local client mounted on MDS/OSS from recovery

          • 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-14996 select preferred mirror using non-rotational status

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

          Activity

            [LU-10158] FLR2: improve mirror selection policy functions
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-19066 [ LU-19066 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-17973 [ LU-17973 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to CAM-89 [ CAM-89 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-10282 [ LU-10282 ]
            adilger Andreas Dilger made changes -
            Summary Original: FLR: Define a replica choosing policy function New: FLR2: improve mirror selection policy functions
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-15834 [ LU-15834 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-7880 [ LU-7880 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-14996 [ LU-14996 ]
            adilger Andreas Dilger made changes -
            Link Original: This issue is related to EX-2787 [ EX-2787 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to EX-2787 [ EX-2787 ]

            People

              bobijam Zhenyu Xu
              jay Jinshan Xiong (Inactive)
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              Dates

                Created:
                Updated: