Oracle International Corporation

Symantec Operating Corporation

Veritas Operating Corporation

Ankur Kemkar

John Colgrove

Ronald S Karr

Juan R Loaiza

Oleg Kiselev

Wei-Ming Hu

Prasad V Bagal

William Havinden Bridge, Jr

J William Lee

Steven Michael Umbehocker

Harish Nandyala

Neil J S MacNaughton

Allen Unueco

Samarjeet Singh Tomar

Adam Y Lee

Vipin Gokhale

Vishvesh Mohanarangam Selvakumaar

Sivaram Prasad Soma

Rajesh Bhalerao

Shaloo K Chaudhary

Jr William H Bridge

Neil JS Macnaughton

Techniques herein store database blocks (DBBs) in byte-addressable persistent memory (PMEM) and prevent tearing without deadlocking or waiting. In an embodiment, a computer hosts a DBMS. A reader process of the DBMS obtains, without locking and from metadata in PMEM, a first memory address for directly accessing a current version, which is a particular version, of a DBB in PMEM. Concurrently and without locking: a) the reader process reads the particular version of the DBB in PMEM, and b) a writer process of the DBMS replaces, in the metadata in PMEM, the first memory address with a second memory address for directly accessing a new version of the DBB in PMEM. In an embodiment, a computer performs without locking: a) storing, in PMEM, a DBB, b) copying into volatile memory, or reading, an image of the DBB, and c) detecting whether the image of the DBB is torn.

Persistent memory file store for directly mapped persistent memory database

Systems, methods, and other embodiments associated with separating executables and working data of an application between separate images are described. In one embodiment, a method includes mounting an application image together with a working image to create an application directory for an application. The application image is read-only and includes at least an executable of the application and the working image includes working data modified by the application. The application directory provides files and paths of the files for the application together within a single unified directory while separating the executable in the application image from the working data in the working image. The method includes in response to receiving a write request to the application directory, arbitrating access to the application directory by controlling the processor to write data for the write request to the working image to maintain the working data separate from the executable of the application.

Computerized system and method for patching an application by separating executables and working data using different images

Systems, methods, apparatus and software can make use of standard input/output (I/O) interface commands to make information about virtual storage devices available to clients of those virtual storage devices. Where the storage virtualization is carried out using a switch, router, or other storage network appliance, the information about virtual devices is stored (and in many cases determined and/or processed) local to the device. Applications operating on the storage clients can conveniently access the information using I/O interface commands and need not have access to some or all of the software or functionality that virtualizes the storage.

System and method for maintaining and accessing information regarding virtual storage devices

A system, method, and medium provide communication between a volume server and a volume owner in a distributed storage management system. A volume server may manage configuration information for a particular volume of storage. A volume owner may manage input/output (I/O) for the volume. The volume server may lease the configuration information to the volume owner using a communications protocol. The communications protocol comprises a plurality of operations for management of the lease. The volume owner may use the configuration information to manage the I/O for the volume.

Volume server and volume owner communication protocol in a distributed storage management system

Storage services and systems are provided. Virtual disks include a number of storage states and are associated with storage operations that are provided with the virtual disks. Moreover, a storage management set of executable instructions is configured based on values assigned to the states when the storage operations are performed against the virtual disks. In some embodiments, a selection set of executable instructions permits the selective execution of the storage operations.

Storage services and systems

Growing community of inventors

San Jose, CA, United States of America

Ankur Kemkar