Identifying a driver that is an owner of an active mount point

Details Identifying a driver that is an owner of an active mount point Identifying a driver that is an owner of an active mount point

1998-01-21

2000-09-26

Vonbuhr, Maria N.

Data processing: database and file management or data structures

Database design

Data structure types

707100, G06F 1730

Patent

active

061253731

ABSTRACT:
The present invention allows arbitrary actions to be performed when grafting the namespace of one device into the namespace of the same or another device. Grafting of the namespace of one device into the namespace of the same or another device creates a logical namespace that can be presented to the user to allow the user to access information in a logically consistent manner. Active mount points are created by adding an active mount point attribute to a file or directory. When an I/O request processed by an I/O system encounters an active mount point, it turns control for processing the active mount point over to an active mount point driver. The active mount point driver assumes responsibility for processing the I/O request. In processing the I/O request, the active mount point driver decides what action should be taken to further processing of the I/O request. To further processing of the I/O request, the active mount point driver may utilize information from a variety of sources as well as make requests to other processes, drivers, systems, subsystems, devices, and so forth. Such actions may include those normally associated with an I/O request such as retrieving and mounting appropriate media as well as actions not normally associated with an I/O request.

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