-
1.发明授权公开(公告)号：US10860254B2
公开(公告)日：2020-12-08
申请号：US16387433
申请日：2019-04-17
Applicant: VMware, Inc.
Inventor： Mansi Shah , Varun Shah , Vishnu Rajula
IPC: G06F3/06
Abstract: The disclosure herein describes throttling resynchronization operations in a cluster of distributed data stores based on I/O bandwidth limits. Resynchronization operations are added to a queue as they are received. A cluster resource manager accesses a resynchronization operation in the queue. A transient capacity value is determined and an available capacity value is obtained. A resynchronization limit of the cluster is identified, wherein the resynchronization limit indicates a maximum percentage of I/O bandwidth of the cluster that is for use by resynchronization operations. Based on a sum of the resynchronization capacity value and the transient capacity value being less than or equal to a product of the resynchronization limit and the available capacity value, the cluster resource manager initiates the accessed resynchronization operation on the cluster, whereby free space is maintained in the cluster for use by user operations.
-
2.发明授权公开(公告)号：US11663098B2
公开(公告)日：2023-05-30
申请号：US17377128
申请日：2021-07-15
Applicant: VMware, Inc.
Inventor： Yiqi Xu , Eric Knauft , Enning Xiang , Ojan Thornycroft , Asit Desai , Varun Shah
CPC classification number: G06F11/2094 , G06F3/065 , G06F3/0619 , G06F3/0659 , G06F3/0673 , G06F2201/82
Abstract: The disclosure herein describes enhancing data durability of a base component of a data object using an unplanned delta component during transient fault unavailability. A base component of a data object becoming unavailable due to a transient fault is detected. A delta component associated with the base component is generated, wherein the delta component includes unwritten storage space with an address space and a tracking bitmap including a plurality of bits associated with data blocks of the address space of the delta component. The stale LSN with which the base component is associated is assigned to the delta component and the delta component is synchronized with an active component of the data object based on the assigned stale LSN. The delta component records write I/O targeted for the base component and, based on detecting the base component becoming available, the base component is synchronized with the delta component.
-
公开(公告)号：US10346063B2
公开(公告)日：2019-07-09
申请号：US15356413
申请日：2016-11-18
Applicant: VMware, Inc.
Inventor： Jin Zhang , Radhika Vullikanti , Gopala Suryanarayana , Varun Shah
Abstract: Exemplary methods, apparatuses, and systems determine that quorum can be maintained for a storage object in a distributed storage system in the event a defined maximum number of first partitions in a first level of storage and a second partitions in a second level of storage fail. When it is determined that there are insufficient numbers of first partitions and/or second partitions, additional first partitions and/or second partitions are associated with the storage object in the distributed storage system. A number of votes is calculated for distribution and an allocation is defined for assigning the votes to each component and witness component of the storage object.
-
公开(公告)号：US11474719B1
公开(公告)日：2022-10-18
申请号：US17320023
申请日：2021-05-13
Applicant: VMware, Inc.
Inventor： Huseyin Sular , Wenguang Wang , Eric Knauft , Asit Desai , Varun Shah
IPC: G06F3/06
Abstract: Techniques for combining the metadata and data address spaces of a distributed storage object are provided. In one set of embodiments, a distributed storage system can receive a request to provision a storage object. In response, the distributed storage system can create, in accordance with an erasure coding scheme, one or more capacity components for holding data of the storage object; create, in accordance with a mirroring scheme having an equivalent level of fault tolerance as the erasure coding scheme, one or more metadata components for holding metadata of the storage object; and create a composite object configuration tree for the storage object that includes first and second subtrees, where the first subtree comprises an indication of the mirroring scheme and references to the one or more metadata components, and where the second subtree comprises an indication of the erasure coding scheme and references to the one or more capacity components.
-
Patent Agency Ranking
公开(公告)号：US11422904B2
公开(公告)日：2022-08-23
申请号：US17106004
申请日：2020-11-27
Applicant: VMware, Inc.
Inventor： Enning Xiang , Ojan Thornycroft , Varun Shah , Eric Knauft , Asit Desai , Yiqi Xu
Abstract: The disclosure herein describes placing delta components of a base component in target fault domains. One or more delta components are generated. When a first fault domain that lacks a sibling component of the base component is identified, the first fault domain is selected as a single delta target fault domain and a single delta component is placed on the single delta target fault domain. When a second fault domain that includes a first sibling component of the base component is identified and a third fault domain that includes a second sibling component of the base component is identified, the second fault domain and the third fault domain are selected as a first double delta target fault domain and a second double delta target fault domain, and a first double delta component and a second double delta component are placed on the first and second double delta target fault domains.
-
公开(公告)号：US10949089B2
公开(公告)日：2021-03-16
申请号：US16442889
申请日：2019-06-17
Applicant: VMware, Inc.
Inventor： Varun Shah , Mansi Shah , Vishnu Rajula
IPC: G06F3/06
Abstract: The disclosure herein describes reconfiguring a data object in a data store using batch portions of components of the data object. Instructions to reconfigure the data object to a target object layout are received, the data object including a concatenation layer that references a plurality of components. The components are grouped into batch portions and the batch portions are reconfigured in a series based on the received instructions. The reconfiguring for each batch portion includes allocating free storage space according to the target object layout as target components, copying the data stored in the batch portion to the target components, redirecting references in the concatenation layer from the components of the batch portion to the target components, and releasing storage space occupied by the components of the batch portion. As a result, storage space used as transient capacity during the reconfiguring is reduced to a size of the batch portions.
-
7.发明申请公开(公告)号：US20200333977A1
公开(公告)日：2020-10-22
申请号：US16387433
申请日：2019-04-17
Applicant: VMware, Inc.
Inventor： Mansi Shah , Varun Shah , Vishnu Rajula
IPC: G06F3/06
Abstract: The disclosure herein describes throttling resynchronization operations in a cluster of distributed data stores based on I/O bandwidth limits. Resynchronization operations are added to a queue as they are received. A cluster resource manager accesses a resynchronization operation in the queue. A transient capacity value is determined and an available capacity value is obtained. A resynchronization limit of the cluster is identified, wherein the resynchronization limit indicates a maximum percentage of I/O bandwidth of the cluster that is for use by resynchronization operations. Based on a sum of the resynchronization capacity value and the transient capacity value being less than or equal to a product of the resynchronization limit and the available capacity value, the cluster resource manager initiates the accessed resynchronization operation on the cluster, whereby free space is maintained in the cluster for use by user operations.
-
公开(公告)号：US11693559B2
公开(公告)日：2023-07-04
申请号：US17212125
申请日：2021-03-25
Applicant: VMware, Inc.
Inventor： Xiaoou Zhao , Peng Dai , Ye Zhang , Gourav Kumar Sakargayan , Asit Desai , Varun Shah , Wangping He
CPC classification number: G06F3/0604 , G06F3/067 , G06F3/0629
Abstract: A method for dynamic storage object configuration in a datacenter is provided. Embodiments include determining a number of fault domains in a storage cluster that have sufficient storage capacity for creating a storage object. Embodiments include applying a dynamic fault tolerance policy to the number of fault domains that have sufficient capacity for creating the storage object in order to determine a number of host failures to tolerate for the storage object, the dynamic fault tolerance policy specifying a manner of determining, for any respective storage object, a respective number of host failures to tolerate for storing the respective storage object in a respective storage cluster based on at least a respective number of fault domains of the respective storage cluster. Embodiments include implementing the storage object on the storage cluster based on the number of host failures to tolerate for the storage object.
-
公开(公告)号：US11182261B1
公开(公告)日：2021-11-23
申请号：US17106050
申请日：2020-11-27
Applicant: VMware, Inc.
Inventor： Eric Knauft , Enning Xiang , Ojan Thornycroft , Yiqi Xu , Asit Desai , Varun Shah
Abstract: The disclosure herein describes enhancing data durability of a base component using multiple delta components. A first and second delta component are generated based on the base component becoming unavailable. A write operation targeted for the base component is routed to the first delta component and to the second delta component. Based on routing the write operation targeted for the base component to the first delta component and to the second delta component, a bit associated with a data block affected by the write operation is changed in each of the tracking bitmaps of the first and second delta components. Based on detecting the base component becoming available, one delta component of the first and second delta components is selected, and the data block affected by the routed write operation is synchronized from the selected delta component to the base component. Later, the first and second delta components are removed.
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.013 seconds)
