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Native snapshots in distributed file systems

  • US 10,262,004 B2
  • Filed: 02/29/2016
  • Issued: 04/16/2019
  • Est. Priority Date: 02/29/2016
  • Status: Active Grant
First Claim
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1. A method comprising:

  • generating, by a processing device, a first writeable sub-volume associated with a first snapshot of a volume distributed across a plurality of storage nodes of a distributed file system;

    identifying, by the processing device, a second writeable sub-volume associated with a second snapshot of the volume taken prior to the first snapshot;

    marking, by the processing device, the second writeable sub-volume of the distributed file system as read-only;

    initiating a reversion to a snapshot revert point of the volume;

    identifying a read-only sub-volume associated with the snapshot revert point;

    identifying a plurality of read-only sub-volumes associated with snapshots taken more recently than the snapshot revert point;

    removing the first writeable sub-volume and the plurality of read-only sub volumes; and

    marking the read-only volume associated with the snapshot revert point as writeable.

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