Oracle International Corporation

International Business Machines Corporation

Jeffrey Anderson Smith

William Eugene Baker

Piyush Shivam

Bret Ronald Olszewski

David Blair Whitworth

Implementations of the present disclosure involve a system and/or method for gracelessly rebooting a storage appliance. The method and system includes a storage appliance in association with an event that will result in the loss of a state table from volatile memory that halts changes to at least one state table of the storage appliance. The state tables describe a plurality of file system states of one or more clients connected to the first storage appliance. The state information is written to a persistent memory of the storage appliance. The state table may then be repopulated using the state table information stored in persistent memory.

Method and apparatus for restoring an instance of a storage server

Implementations of the present disclosure involve a system and method for simulating a storage cluster testing system. The method and system includes a processor configured to instructions stored on a memory to produce a simulation interface. The simulation interface includes an abstraction layer that receives verbs from a test driver and passes the verbs to one of two or more plugins. The plugins may include a synthetic plugin configured to translate the verbs into one or more command and send commands to a simulated storage appliance that is a computing device with relatively lower performance than an actual storage appliance. The simulated storage appliance may act in place of two storage appliances clustered to form a storage cluster. The simulated storage appliance forms a simulated storage cluster. The simulated storage cluster simulates the performance of the verb on by the storage cluster.

Method and apparatus for simulated failover testing

Initially, data is copied from a disk to a page frame and then to a read buffer, for instance. Next, a check is made to determine whether the percent of real memory occupied by file pages is less than a preset maximum volume. If so, no space is allocated for additional file page and no page frames are returned to the free list. If not, the VMM selects the best candidate file pages in real memory and returns them to the free list. Ideal candidates are a thread's memory pages, from a thread doing sequential I/O the file system. In so doing, the page frames are added to the free list as soon as the I/O is complete.

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Hutto, TX, United States of America

Jeffrey Anderson Smith