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:
Apr. 16, 2019
Filed:
Dec. 10, 2015
International Business Machines Corporation, Armonk, NY (US);
Gaurav Batra, Cedar Park, TX (US);
Anil Kumar K. Damodaran, Cedar Park, TX (US);
Douglas Griffith, Spicewood, TX (US);
Amarendar N. Sulu, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Sharing read-only data among virtual machines (VM) using an attached coherent accelerator processor interface (CAPI) enabled flash storage (CeFS) is provided. The method includes mapping a file, by a virtual machine monitor, from the CeFS into a range of common memory in the virtual machine monitor. The VM shares the mapped file with at least one other VM at a range of common memory in their address spaces. A redirect-on-write filesystem (RoWFS) is created on the VM and the at least one other VM, whereby the RoWFS includes a read-only copy and a private copy of a linear memory map of the mapped file. A data page is read using the copy of the linear memory map, and the data page is modified using the private copy of the linear memory map.