-
公开(公告)号：US11334482B2
公开(公告)日：2022-05-17
申请号：US16933162
申请日：2020-07-20
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Vamsi Gunturu
IPC: G06F12/06
Abstract: A logical map represents fragments from separate versions of a data object. Migration of data from a first (old) version to the second (new) version happens gradually, where write operations go to the new version of the data object. The logical map initially points to the old data object, but is updated to point to the portions of the new data object as write operations are performed on the new data object. A background migration copies data from the old data object to the new data object.
-
公开(公告)号：US11334276B2
公开(公告)日：2022-05-17
申请号：US16842635
申请日：2020-04-07
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Vamsi Gunturu
IPC: G06F3/06
Abstract: Techniques for supporting large segments when issuing writes to an erasure coded storage object in a distributed storage system are provided. In one set of embodiments, a node of the system can pre-allocate a segment of space in a capacity object of the storage object, receive a write request for updating a logical data block of the storage object, write data/metadata for the block to a record in a data log of a metadata object of the storage object, place the block in an in-memory bank, and determine whether the in-memory bank has become full. If so, the node can compute/fill-in one or more parity blocks for each stripe of the storage object in the in-memory bank and write, based on a next sub-segment pointer pointing to a free sub-segment of the pre-allocated segment, the contents of the in-memory bank via a full stripe write to the free sub-segment.
-
公开(公告)号：US11307932B2
公开(公告)日：2022-04-19
申请号：US16925145
申请日：2020-07-09
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Vamsi Gunturu , Eric Knauft
Abstract: Writing to a storage system with data striping includes storing blocks of data in local memory until one or more full-stripe write operations can be performed, thus reducing write amplification on the data striped storage system. Crash recovery information includes storing the data associated metadata to respective persistent storage devices. Metadata associated with data from several clients is combined into fixed-size data blocks and stored on the respective persistent storage device.
-
公开(公告)号：US11288129B2
公开(公告)日：2022-03-29
申请号：US17002577
申请日：2020-08-25
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Vamsi Gunturu , Junlong Gao , Petr Vandrovec , Ilya Languev , Maxime Austruy , Ilia Sokolinski , Satish Pudi
Abstract: Techniques for tiering data to a cold storage tier of a cloud object storage platform are provided. In one set of embodiments, a computer system can identify one or more old snapshots of a data set that reside in a first storage tier of the cloud object storage platform, where the one or more old snapshots are snapshots that are unlikely to be deleted from the cloud object storage platform within a period of N days. The computer system can further, for each snapshot in the one or more old snapshots: identify one or more data blocks in the snapshot that are superseded by a more recent snapshot in the one or more old snapshots; write the one or more data blocks to a second (i.e., cold) storage tier of the cloud object storage platform that has a lower storage cost than the first storage tier; and cause the one or more data blocks to be deleted from the first storage tier.
-
公开(公告)号：US20220092033A1
公开(公告)日：2022-03-24
申请号：US17028405
申请日：2020-09-22
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Vamsi Gunturu , Junlong Gao , Maxime Austruy , Petr Vandrovec , Ilya Languev , Ilia Sokolinski , Satish Pudi
IPC: G06F16/174 , G06F16/13 , G06F16/14
Abstract: The present disclosure is related to methods, systems, and machine-readable media for supporting deduplication in file storage using file chunk hashes. A hash of a chunk of a log segment can be received from a software defined data center. A chunk identifier can be associated with the hash in a hash map that stores associations between sequentially-allocated chunk identifiers and hashes. The chunk identifier can be associated with a logical address corresponding to the chunk of the log segment in a logical map that stores associations between the sequentially-allocated chunk identifiers and logical addresses. A search of the hash map can be performed to determine if the chunk is a duplicate, and the chunk can be deduplicated responsive to a determination that the chunk is a duplicate.
-
Patent Agency Ranking
公开(公告)号：US20220027185A1
公开(公告)日：2022-01-27
申请号：US16936846
申请日：2020-07-23
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Matt Amdur , Vamsi Gunturu
Abstract: The present disclosure is related to methods, systems, and machine-readable media for cloneless snapshot reversion. A request can be received to revert to a past snapshot of a virtual computing instance in a snapshot chain of a snapshot tree provided by a software defined data center. A live snapshot can be created at an end of the snapshot chain comprising the past snapshot. An intervening snapshot in the snapshot chain can be indicated as abandoned in a snapshot map associated with the snapshot tree based on the reversion.
-
公开(公告)号：US20220012131A1
公开(公告)日：2022-01-13
申请号：US16925145
申请日：2020-07-09
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Vamsi Gunturu , Eric Knauft
Abstract: Writing to a storage system with data striping includes storing blocks of data in local memory until one or more full-stripe write operations can be performed, thus reducing write amplification on the data striped storage system. Crash recovery information includes storing the data associated metadata to respective persistent storage devices. Metadata associated with data from several clients is combined into fixed-size data blocks and stored on the respective persistent storage device
-
公开(公告)号：US20210365365A1
公开(公告)日：2021-11-25
申请号：US16882327
申请日：2020-05-22
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Vamsi Gunturu , Junlong Gao
Abstract: Techniques for using data mirroring across regions to reduce the likelihood of losing objects in a cloud object storage platform are provided. In one set of embodiments, a computer system can upload first and second copies of a data object to first and second regions of the cloud object storage platform respectively, where the first and second copies are identical. The computer system can then attempt to read the first copy of the data object from the first region. If the read attempt fails, the computer system can retrieve the second copy of the data object from the second region.
-
公开(公告)号：US20210311652A1
公开(公告)日：2021-10-07
申请号：US16842635
申请日：2020-04-07
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Vamsi Gunturu
IPC: G06F3/06
Abstract: Techniques for supporting large segments when issuing writes to an erasure coded storage object in a distributed storage system are provided. In one set of embodiments, a node of the system can pre-allocate a segment of space in a capacity object of the storage object, receive a write request for updating a logical data block of the storage object, write data/metadata for the block to a record in a data log of a metadata object of the storage object, place the block in an in-memory bank, and determine whether the in-memory bank has become full. If so, the node can compute/fill-in one or more parity blocks for each stripe of the storage object in the in-memory bank and write, based on a next sub-segment pointer pointing to a free sub-segment of the pre-allocated segment, the contents of the in-memory bank via a full stripe write to the free sub-segment.
-
公开(公告)号：US11822950B2
公开(公告)日：2023-11-21
申请号：US16936846
申请日：2020-07-23
Applicant: VMware, Inc.
Inventor： Wenguang Wang , Matt Amdur , Vamsi Gunturu
CPC classification number: G06F9/45558 , G06F11/1469 , G06F16/128 , G06F2009/45562 , G06F2201/84
Abstract: The present disclosure is related to methods, systems, and machine-readable media for cloneless snapshot reversion. A request can be received to revert to a past snapshot of a virtual computing instance in a snapshot chain of a snapshot tree provided by a software defined data center. A live snapshot can be created at an end of the snapshot chain comprising the past snapshot. An intervening snapshot in the snapshot chain can be indicated as abandoned in a snapshot map associated with the snapshot tree based on the reversion.
-
-
-
-
-
-
-
-
-
Search Results
58
records
(took 0.022 seconds)
