NON-DISRUPTIVE FILE SYSTEM ELEMENT RECONFIGURATION ON DISK EXPANSION
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Abstract
An apparatus is operable with a host and a data storage component for controlling expansion of storage, and comprises: an allocating component responsive to a user input for allocating an expanded target storage space to a file system element to thereby make an expanded file system element; a file system metadata component for maintaining file system metadata including metadata for said expanded file system element; a file system I/O component responsive to said file system metadata component for controlling file system I/O between said host and said storage component; and a synchronizing component responsive to said file system metadata component for synchronizing data between a source storage space and said expanded target storage space; wherein said file system I/O component is operable to use said file system metadata component to access said expanded file system element prior to completion of action of said synchronizing component.
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Citations
25 Claims
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1-10. -10. (canceled)
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11. An apparatus operable with a host and a data storage component, comprising:
a computational device, comprising; an allocating component responsive to a user input to allocate an expanded target storage space to a file system element to make an expanded file system element; a file system metadata component to maintain file system metadata including metadata for said expanded file system element; a file system Input/Output (I/O) component responsive to said file system metadata component to control file system I/O between said host and said data storage component; and a synchronizing component responsive to said file system metadata component to synchronize data between a source storage space and said expanded target storage space, wherein said file system I/O component is operable to use said file system metadata component to access said expanded file system element prior to completion of action of said synchronizing component, wherein said source storage space stores a file system that is to be migrated to said expanded target storage space having an additional space beyond that provided by said source storage space, wherein said source storage space is provided by a source storage device and said expanded target storage space is provided by a target storage device, said synchronizing data further comprising; sending, any selected write that is addressed to a block of said file system stored in said source storage device, to both said source storage device and said target storage device, wherein said selected write is not completed until writing of said selected write to both said source storage device and said target storage device is complete. - View Dependent Claims (12, 13, 14, 15)
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16. A method, comprising:
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allocating, responsive to a user input, an expanded target storage space to a file system element to make an expanded file system element; maintaining file system metadata including metadata for said expanded file system element; responsive to said file system metadata, controlling file system I/O between a host and a storage component; and responsive to said file system metadata, synchronizing data between a source storage space and said expanded target storage space, wherein controlling said file system I/O comprises using said file system metadata to access said expanded file system element prior to completion of the synchronizing of the data, wherein said source storage space stores a file system that is to be migrated to said expanded target storage space having an additional space beyond that provided by said source storage space, wherein said source storage space is provided by a source storage device and said expanded target storage space is provided by a target storage device, said synchronizing data further comprising; sending, any selected write that is addressed to a block of said file system stored in said source storage device, to both said source storage device and said target storage device, wherein said selected write is not completed until writing of said selected write to both said source storage device and said target storage device is complete. - View Dependent Claims (17, 18, 19, 20)
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21. A tangible computer readable medium having stored therein computer program code, wherein the computer program code when loaded into a computer system and executed thereon, cause said computer system to perform:
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allocating, responsive to a user input, an expanded target storage space to a file system element to make an expanded file system element; maintaining file system metadata including metadata for said expanded file system element; responsive to said file system metadata, controlling file system I/O between a host and a storage component; and responsive to said file system metadata, synchronizing data between a source storage space and said expanded target storage space, wherein controlling said file system I/O comprises using said file system metadata to access said expanded file system element prior to completion of the synchronizing of the data, wherein said source storage space stores a file system that is to be migrated to said expanded target storage space having an additional space beyond that provided by said source storage space, wherein said source storage space is provided by a source storage device and said expanded target storage space is provided by a target storage device, said synchronizing data further comprising; sending, any selected write that is addressed to a block of said file system stored in said source storage device, to both said source storage device and said target storage device, wherein said selected write is not completed until writing of said selected write to both said source storage device and said target storage device is complete. - View Dependent Claims (22, 23, 24, 25)
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Specification