Electrical computers and digital processing systems: memory – Storage accessing and control – Access timing
Reexamination Certificate
2011-06-28
2011-06-28
Bataille, Pierre-Michel (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Access timing
C711SE12002, C718S100000
Reexamination Certificate
active
07971021
ABSTRACT:
Embodiments relate to systems and methods for managing stalled storage devices of a storage system. In one embodiment, a method for managing access to storage devices includes determining that a first storage device, which stores a first resource, is stalled and transitioning the first storage device to a stalled state. The method also includes receiving an access request for at least a portion of the first resource while the first storage device is in the stalled state and attempting to provide access to a representation of the portion of the first resource from at least a second storage device that is not in a stalled state. In another embodiment, a method of managing access requests by a thread for a resource stored on a storage device includes initializing a thread access level for an access request by a thread for the resource. The method also includes determining whether the storage device, which has a device access level, is accessible based at least in part on the thread access level and the device access level and selecting a thread operation based at least in part on the determination of whether the storage device is accessible. The thread operation may be selected from attempting the thread access request if the device is accessible and determining whether to restart the thread access request if the device is not accessible.
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Akidau Tyler A.
Daud Asif
Maykov Ilya
Passey Aaron J.
Bataille Pierre-Michel
EMC Corporation
Knobbe Martens Olson & Bear LLP
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