Invention Grant
- Patent Title: Systems and methods of maintaining fault tolerance for new writes in degraded erasure coded distributed storage
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Application No.: US17033610Application Date: 2020-09-25
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Publication No.: US11494090B2Publication Date: 2022-11-08
- Inventor: Asit Desai , Wenguang Wang , Eric Knauft , Vamsi Gunturu
- Applicant: VMware Inc.
- Applicant Address: US CA Palo Alto
- Assignee: VMware Inc.
- Current Assignee: VMware Inc.
- Current Assignee Address: US CA Palo Alto
- Agency: Fish & Richardson P.C.
- Main IPC: G06F3/06
- IPC: G06F3/06 ; G06F11/10

Abstract:
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for maintaining fault tolerance for new writes in a storage system when one or more components of the storage system are unavailable. One of the methods includes determining that one or more first disks of a capacity object of a storage system are unavailable, wherein the storage system comprises a segment usage table identifying the plurality of segments of the capacity object; in response: identifying a plurality of available second disks, adding a plurality of new segments corresponding to the second disks to the capacity object, and adding data identifying the plurality of new segments to the segment usage table; and for each of one or more new write requests to the capacity object: identifying an available segment from the plurality of new segments, and writing data associated with the new write request to the identified available segment.
Public/Granted literature
Information query