Systems and methods for storage management in a data processing device

A data processing device comprising:

• a processor;
• a mass storage device coupled to said processor, wherein said mass storage device comprises a first segment of data area and a second segment of data area;
• and
• a memory coupled with said processor, said memory having contained therein sequences of instructions which, when executed by said processor, cause said processor to perform a method, the method comprising:
• vending a first portion of the storage device to the another system while the data processing device is in a disk mode;
• retaining control, by the data processing device, over a second portion of the storage device while in the disk mode, wherein locking of blocks in the second portion, from access by the another system, is performed at a block level;
• and
• expanding a size of the second portion by taking part of the first portion while in the disk mode, said expanding being performed in response to a command from the another system, said command being a command to create a file in said second portion, wherein said file is marked to be unusable by an application on the another system;
• optionally optimizing data structures of said expanded second portion;
• the data processing device processing data autonomously when not in disk mode;
• the data processing device having control over said first portion and said second portion of the storage device when not in the disk mode.

A method, comprising:

• a first data processing system accessing a storage device, the storage device being coupled to a second data processing system, wherein the first data processing system is connected to the second data processing system through a communication interface, the accessing including:
• accessing a first portion of the storage device while the second data processing system is in a disk mode;
• giving control to the second data processing system over a second portion of the storage device when second data processing system is in the disk mode, wherein blocks in the second portion are locked at a block level, by the second data processing system, from access by the first data processing system;
• and
• expanding a size of the second portion by sending at least one command to the second data processing system through the communication interface, wherein said expanding is performed by the second data processing system by taking part of the first portion while in the disk mode, said at least one command to create a file in said second portion, wherein said file is marked to be unusable by an application on the first data processing system;
• said second data processing system optionally optimizing data structures of said expanded second portion;
• said second data processing system operating autonomously when not in disk mode;
• said second data processing having control over said first portion and said second portion of the storage device when not in the disk mode.

An apparatus, comprising:

• a first data processing system comprising:
• a first processor;
• and
• a first memory coupled with said first processor, said first memory having contained therein sequences of instructions which, when executed by said first processor, cause said first processor to perform a first method, the first method comprising:
• accessing a first portion of a storage device of a second data processing system while the second data processing system is in a disk mode;
• giving control to the second data processing system over a second portion of the storage device when second data processing system is in the disk mode, wherein blocks in the second portion are locked at a block level, by the second data processing system, from access by the first data processing system;
• and
• expanding a size of the second portion by sending at least one command to the second data processing system through a communication interface, wherein said expanding is performed by the second data processing system by taking part of the first portion while in the disk mode, said at least one command to create a file in said second portion, wherein said file is marked to be unusable by an application on the first data processing system;
• said second data processing system optionally optimizing data structures of said expanded second portion;
• said second data processing system operating autonomously when not in disk mode;
• said second data processing having control over said first portion and said second portion of the storage device when not in the disk mode.

A non-transitory machine readable medium containing executable instructions which when executed by a data processing device cause the data processing device to perform a method, the method comprising:

• controlling a storage device of the data processing device, the storage device having a communication interface through which another system is given access to the storage device, the controlling including:
• vending a first portion of the storage device to the another system while the data processing device is in a disk mode;
• retaining control, by the data processing device, over a second portion of the storage device while in the disk mode, wherein locking of blocks in the second portion, from access by the another system, is performed at a block level;
• and
• expanding a size of the second portion by taking part of the first portion while in the disk mode, said expanding being performed in response to a command from the another system, said command being a command to create a file in said second portion, wherein said file is marked to be unusable by an application on the another system;
• optionally optimizing data structures of said expanded second portion;
• the data processing device processing data autonomously when not in disk mode;
• the data processing device having control over said first portion and said second portion of the storage device when not in the disk mode.

A non-transitory machine readable medium containing executable instructions which when executed by a first data processing system cause the first data processing system to perform a method for the first data processing system to access a storage device, the storage device being coupled to a second data processing system, wherein the first data processing system is connected to the second data processing system through a communication interface, the method comprising:

• accessing a first portion of the storage device while the second data processing system is in a disk mode;
• giving control to the second data processing system over a second portion of the storage device when second data processing system is in the disk mode, wherein blocks in the second portion are locked at a block level, by the second data processing system, from access by the first data processing system;
• and
• expanding a size of the second portion by sending at least one command to the second data processing system through the communication interface, wherein said expanding is performed by the second data processing system by taking part of the first portion while in the disk mode, said at least one command to create a file in said second portion, wherein said file is marked to be unusable by an application on the first data processing system;
• a second non-transitory machine readable medium containing executable instructions which when executed by the second data processing system cause the second data processing system to perform the following method:
• optionally optimizing data structures of said expanded second portion;
• operating autonomously when not in disk mode;
• having control over said first portion and said second portion of the storage device when not in the disk mode.