RDMA copy-on-write

Details RDMA copy-on-write RDMA copy-on-write

2006-10-31

2010-11-23

Kim, Hong (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S161000, C711S162000, C714S005110, C714S006130

Reexamination Certificate

active

07840765

ABSTRACT:
In an embodiment of the invention, an apparatus and method for Remote Direct Access Memory (RDMA) copy-on-write perform the steps including: marking a page of a first application as copy-on-write when the first application and a second application share the page, and exposing the page via RDMA protocol to a remote application; in response to a write access message to the page from the remote application, dropping the write access message; and stalling the first application while a copy-on-write processing is pending, in response to the write access message to the page from the remote application.

REFERENCES:
patent: 6487645 (2002-11-01), Clark et al.
patent: 2005/0004925 (2005-01-01), Stahl et al.

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