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Status Delivered
Workspace Storage Scale (formerly known as GPFS)
Created by Guest
Created on Sep 18, 2019

RELATED IDEAS

Spectrum Scale (ESS) AFM-DR Role Reversal Performance Enhancement

AFM (or AFM DR) uses the file handles (FH) for the replication. FH uniquely identifies the target path (DR) for the local file (primary). For NFS , NFSv3 file handle which is stored in the inode. NFSv3 FH can be directly used for the IO. When the failover happens, DR site does not have file handles of the old primary site. During the role reversal process, FH is built for all the files before replicating any changes made after the failover. This FH building might take time (may be some days) based on the number of files and the latency between the sites. If the disaster happens while building the FH, users might loose the data modified after the failover. File handles at the DR site should be built automatically during the replication from the primary to secondary site so that role reversal does not have build the file handles and the replication can start immediately.

Idea priority High
  • Guest
    Reply
    |     Apr 14, 2022

    Thank you for submitting this Spectrum Scale enhancement request. This item was delivered in 5.1.2 with the afmResyncVer2 feature.


    Sincerely,

    Spectrum Scale team

  • 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 - Technical Foundation

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