• Patent Title: USE OF CLUSTER-LEVEL REDUNDANCY WITHIN A CLUSTER OF A DISTRIBUTED STORAGE MANAGEMENT SYSTEM TO ADDRESS NODE-LEVEL ERRORS
  • Application No.: US17680631
    Application Date: 2022-02-25
  • Publication No.: US20230152986A1
    Publication Date: 2023-05-18
  • Inventor: Wei SunAnil Paul ThoppilAnne Maria Vasu
  • Applicant: NetApp, Inc.
  • Applicant Address: US CA San Jose
  • Assignee: NetApp, Inc.
  • Current Assignee: NetApp, Inc.
  • Current Assignee Address: US CA San Jose
  • Main IPC: G06F3/06
  • IPC: G06F3/06
USE OF CLUSTER-LEVEL REDUNDANCY WITHIN A CLUSTER OF A DISTRIBUTED STORAGE MANAGEMENT SYSTEM TO ADDRESS NODE-LEVEL ERRORS
Abstract:
Systems and methods that make use of cluster-level redundancy within a distributed storage management system to address various node-level error scenarios are provided. Rather than using a generalized one-size-fits-all approach to reduce complexity, an approach tailored to the node-level error scenario at issue may be performed to avoid doing more than necessary. According to one embodiment, responsive to identifying a missing branch of a tree implemented by a KV store of a first node of a cluster of a distributed storage management system, a branch resynchronization process may be performed, including, for each block ID in the range of block IDs of the missing branch (i) reading a data block corresponding to the block ID from a second node of the cluster that maintains redundant information relating to the block ID; and (ii) restoring the block ID within the KV store by writing the data block to the first node.
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