Safety for volume operations
AssigneePure Storage, Inc.
InventorsJohn Colgrove, Ethan Miller, John Hayes, Cary Sandvig, Christopher Golden, Jianting Cao
Life of this patent
Estimating the term…
Abstract
A system and method for maintaining the safety of volume operations. A storage controller receives a request to delete a first volume. In response to this request, the storage controller can delete a link between the first volume and its anchor medium. The storage controller can also delay the deletion of the first volume's anchor medium. Later on, if the user wishes to restore the first volume, the storage controller can reconnect the first volume to its previous anchor medium, effectively restoring the first volume to its former state and undoing the deletion operation.
Claims20
A computer system comprising:
- one or more storage devices;
- and
- a storage controller coupled to the one or more storage devices, wherein the storage controller is configured to:
- receive a request to delete a first volume mapped to a first medium, wherein the first medium is a logical grouping of data;
- responsive to receiving the request to delete the first volume:
- determine the first medium is an anchor medium of the first volume;
- store an indication that the first volume was previously linked to the first medium;
- and
- remove any indication that the first volume is valid.
A method for use in a storage system, the method comprising:
- receiving a request to delete a first volume mapped to a first medium, wherein the first medium is a logical grouping of data;
- responsive to receiving the request to delete the first volume:
- determining the first medium is an anchor medium of the first volume;
- storing an indication that the first volume was previously linked to the first medium;
- and
- removing any indication that the first volume is valid.
A non-transitory computer readable storage medium storing program instructions, wherein the program instructions are executable by a processor to:
- receive a request to delete a first volume mapped to a first medium, wherein the first medium is a logical grouping of data;
- responsive to receiving the request to delete the first volume:
- determine the first medium is an anchor medium of the first volume;
- store an indication that the first volume was previously linked to the first medium;
- and
- remove any indication that the first volume is valid.
Dependencies are inferred from the claim text.