The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2018
Filed:
Jul. 29, 2015
Netapp, Inc., Sunnyvale, CA (US);
Indranil Bhattacharya, Bangalore, IN;
NetApp, Inc., Sunnyvale, CA (US);
Abstract
A technique uses file system indirection to manage solid state devices (SSDs). Based on relocation of data on the SSDs from a first SSD storage block to a second SSD storage block, a flash translation layer (FTL) driver may update a per-volume indirection file to reference the second SSD storage block and no longer reference the first SSD storage block. Based on a mismatch between the per-volume indirection file and a buffer tree, the buffer tree is updated to reference the second SSD storage block. Alternatively, the FTL driver may create and insert an entry into a mapping table, wherein the entry may reference the first SSD storage block and also reference the second SSD storage block. The buffer tree may then be updated to reference the second SSD storage block based on the new entry, and the new entry may then be deleted after the buffer tree is updated.