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Status Delivered
Created by Guest
Created on Jul 10, 2019

Metadata Slowness when list files in Spectrum Scale snapshot of an independent fileset with many dependent filesets. (fileset scaling)

Please refer to IBM Support Case ID: TS002244951

Listing of files in a Snapshot with 961 filesets takes about 3 min for the first time. The subseqent runs of ls -ltr command run much faster.

In this case /ace/home is independent fileset with 961 dependent filesets for each user.

Idea priority Medium
  • Guest
    Reply
    |
    Sep 30, 2020

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - IBM Spectrum Scale
    Product - Spectrum Scale (formerly known as GPFS) - Public RFEs
    Component - Product functionality

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - IBM Spectrum Scale
    Product - Spectrum Scale (formerly known as GPFS) - Public RFEs
    Component - V4 Product functionality

  • Guest
    Reply
    |
    Jun 3, 2020

    Delivered in 5.0.5

  • Guest
    Reply
    |
    Jan 31, 2020

    Fix checked in for 5.0.5

  • Guest
    Reply
    |
    Jul 11, 2019

    Theoverall snapshot processing seems to be in need for a speedup in processing. Since this is a scale out system also functionalty need to scale with the capacity.
    Since this is not the only issue with snapshot processing, I suggest to rethink snapshot implementation in gpfs.

    By the way: I believe this ls -ltr command does not run mutch faster, if the metadata has not been cached before for the original directories.