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公开(公告)号：US11755233B2
公开(公告)日：2023-09-12
申请号：US17239243
申请日：2021-04-23
CPC分类号： G06F3/0652 , G06F3/0604 , G06F3/0679 , G06F12/023
摘要： A method, computer program product, and computing system for identifying a first memory device source that includes first content; identifying a second memory device source that include second content; and initiating a first iteration of a memory device cleansing procedure wherein first content and at least a first portion of the second content are moved to a first unused memory device.
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公开(公告)号：US11068299B1
公开(公告)日：2021-07-20
申请号：US15669364
申请日：2017-08-04
发明人： Philippe Armangau , Christopher A. Seibel , John Gillono , Bruce E. Caram , Yubing Wang , Jean-Pierre Bono
摘要： A technique for managing metadata in a data storage system includes receiving a set of data to be stored in a file system of the data storage system and calculating values of metadata blocks that the file system will use to organize the set of data in the file system. The technique aggregates values of the metadata blocks and sends them in a single, atomic transaction to a persistent cache. The transaction either succeeds, in which case the persistent cache stores the values of all of the metadata blocks, or it fails, in which case the persistent cache stores none of the values of the metadata blocks. Over time, the persistent cache flushes the values of the metadata blocks to a set of non-volatile storage devices that back the metadata blocks in the data storage system.
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公开(公告)号：US20220357871A1
公开(公告)日：2022-11-10
申请号：US17239243
申请日：2021-04-23
IPC分类号： G06F3/06
摘要： A method, computer program product, and computing system for identifying a first memory device source that includes first content; identifying a second memory device source that include second content; and initiating a first iteration of a memory device cleansing procedure wherein first content and at least a first portion of the second content are moved to a first unused memory device.
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公开(公告)号：US11216195B1
公开(公告)日：2022-01-04
申请号：US16945383
申请日：2020-07-31
IPC分类号： G06F3/06 , G06F12/0871 , G06F12/0804
摘要： An allocation history is maintained for each node in a multi-node data storage system. The allocation history for each node indicates sets of physical blocks previously allocated to the node to store dirty pages of user data flushed from a cache of the node. The allocation history indicates non-quarantined sets of physical blocks that are currently being used to provide non-volatile data storage to cache flush operations, and quarantined sets of physical blocks not currently being used to provide non-volatile data storage to cache flush operations. Allocation is prevented to any node of any set of physical blocks that is indicated as non-quarantined by any of the allocation histories, and of any set of physical blocks that is indicated as quarantined by any of the allocation histories.
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5.发明授权公开(公告)号：US10203880B1
公开(公告)日：2019-02-12
申请号：US15279783
申请日：2016-09-29
IPC分类号： G06F3/06
摘要： A technique writes data to a storage array. The technique involves operating storage circuitry in a “FILL HOLE” mode in which the circuitry writes a stream of first data portions within storage portions of used storage stripes of the array. The technique further involves, after operating the circuitry in the “FILL HOLE” mode and in response to a first event, transitioning the circuitry from the “FILL HOLE” mode to a “STRIPE WRITE” mode in which the circuitry writes a stream of second data portions within unused storage stripes of the array. The technique further involves, after operating the circuitry in the “STRIPE WRITE” mode and in response to a second event, transitioning the circuitry from the “STRIPE WRITE” mode back to the “FILL HOLE” mode in which the circuitry writes a stream of third data portions within storage portions of used storage stripes of the array.
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公开(公告)号：US20210133156A1
公开(公告)日：2021-05-06
申请号：US16674555
申请日：2019-11-05
摘要： A method, computer program product, and computing system for maintaining a first cursor pointer for a memory system, wherein the first cursor pointer concerns a first search criteria and identifies an initial first cursor starting location; receiving a first search request for the memory system that satisfies the first search criteria; executing the first search request within an initial first search window starting at the initial first cursor starting location; and updating the first cursor pointer to identify an updated first cursor starting location based, at least in part, upon the initial first search window.
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公开(公告)号：US20190129970A1
公开(公告)日：2019-05-02
申请号：US15799117
申请日：2017-10-31
IPC分类号： G06F17/30
摘要： Embodiments are directed to techniques for performing deduplication. A method includes (a) obtaining a digest of a data block logically-positioned within a filesystem, the digest providing a hash value of data of the data block, (b) searching a Most Wanted Digest Cache (MWDC) within system memory for the digest, (c) locating an entry in the MWDC using the digest, wherein this locating indicates that the data block has the same data as another data block located elsewhere within the filesystem, the other data block having been previously persistently-stored, the entry having been added to the MWDC in response to the other data block having been deduplicated at least a plurality number of times, (d) locating a mapping structure referenced by the entry located from the MWDC, the mapping structure providing metadata about the other data block, and (e) deduplicating the data block and the other data block with reference to the located mapping structure.
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8.发明申请公开(公告)号：US20190129623A1
公开(公告)日：2019-05-02
申请号：US15798580
申请日：2017-10-31
IPC分类号： G06F3/06
摘要： A storage technique includes selectively tagging a set of write requests by applying tags to write requests that are pursuant to copy operations and not applying tags to at least some write requests that are not pursuant to copy operations. For each of the set of write requests, the technique further includes performing a decision operation configured to (i) direct the write request down a first processing path that supports inline deduplication in response to the write request satisfying a set of criteria and (ii) direct the write request down a second processing path that does not support inline deduplication in response to the write request failing to satisfy the set of criteria. The set of criteria include whether the write request has a tag applied, such that the decision operation preferentially directs write requests down the first processing path in response to the write requests being tagged.
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9.发明授权公开(公告)号：US10268381B1
公开(公告)日：2019-04-23
申请号：US15798580
申请日：2017-10-31
摘要： A storage technique includes selectively tagging a set of write requests by applying tags to write requests that are pursuant to copy operations and not applying tags to at least some write requests that are not pursuant to copy operations. For each of the set of write requests, the technique further includes performing a decision operation configured to (i) direct the write request down a first processing path that supports inline deduplication in response to the write request satisfying a set of criteria and (ii) direct the write request down a second processing path that does not support inline deduplication in response to the write request failing to satisfy the set of criteria. The set of criteria include whether the write request has a tag applied, such that the decision operation preferentially directs write requests down the first processing path in response to the write requests being tagged.
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公开(公告)号：US12050807B2
公开(公告)日：2024-07-30
申请号：US17239281
申请日：2021-04-23
CPC分类号： G06F3/0659 , G06F3/0614 , G06F3/0635 , G06F3/0653 , G06F3/067
摘要： A method, computer program product, and computing system for defining a quantity of discrete storage portions within a storage system; entering an expansion mode during which the discrete storage portions are incrementally assigned to at least one processing node until a first assignment level target is achieved; once the first assignment level target is achieved, entering a utilization mode during which the utilization of the assigned discrete portions is increased until a first utilization level target is achieved; and once the first utilization level target is achieved, reentering the expansion mode during which additional discrete storage portions are incrementally assigned to the at least one processing node until a second assignment level target is achieved.
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