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公开(公告)号：US12141042B2
公开(公告)日：2024-11-12
申请号：US18116413
申请日：2023-03-02
Applicant: Nutanix, Inc.
Inventor： Praveen Kumar Padia , Deepak Narayan , Kamalneet Singh , Monil Devang Shah , Pradeep Kashyap Ramaswamy , Prakash Narayanasamy , Vinayak Hindurao Khot , Vivek Venkatesan
Abstract: A technique utilizes grafting and differential based (diff-based) data seeding to hydrate a special virtual disk (vdisk) on a multi-node cluster with data changes (differences) between a reference vdisk stored on the cluster and a snapshot stored in an external repository to enable failover (including failback) recovery of an application workload in a disaster recovery environment. The application workload is stored as a workload vdisk on local storage of the cluster and snapshots of the workload vdisk are generated and organized as a vdisk chain on the cluster. One or more snapshots of the vdisk chain may be replicated to the external repository using a long-term snapshot service. Each replicated snapshot may be backed up from the cluster to the external repository at the granularity of a vdisk, referred to herein as an external datasource disk. The special vdisk is a thinly provisioned, datasource-backed vdisk that is grafted onto the vdisk chain, e.g., as a child vdisk of the reference vdisk. The differences between the reference vdisk and datasource disk are seeded from the datasource disk to hydrate the datasource-backed vdisk.
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Patent Agency Ranking
公开(公告)号：US11580013B2
公开(公告)日：2023-02-14
申请号：US17161518
申请日：2021-01-28
Applicant: NUTANIX, INC.
Inventor： Rohit Jain , Pradeep Kashyap Ramaswamy
IPC: G06F12/02 , G06F16/901 , G06F16/22 , G06F3/06
Abstract: Various embodiments set forth techniques for free space management in a block store. The techniques include receiving a request to allocate one or more blocks in a block store, accessing a sparse hierarchical data structure to identify an allocator page identifying a region of a backing store having a greatest number of free blocks, and allocating the one or more blocks.
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公开(公告)号：US20240297786A1
公开(公告)日：2024-09-05
申请号：US18237315
申请日：2023-08-23
Applicant: Nutanix, Inc.
Inventor： Angshuman Bezbaruah , Brajesh Kumar Shrivastava , Nikhil Loya , Abhishek Gupta , Pradeep Kashyap Ramaswamy
CPC classification number: H04L9/088 , G06F16/128
Abstract: A bypassing technique bypasses an indexing service and provides a bypass data path for transferring/retrieving snapshots from a production cluster to an object store. In an embodiment, the production cluster may determine how extents of the snapshots are packed into objects of the object store and transfers the snapshots directly to the object store over the bypass data path. Once the snapshot transfer is completed, the production cluster provides location metadata as to how the snapshot extents are packed into objects to the indexing service. The indexing service is invoked to create an index of the location metadata and is not involved in the data transfer of the snapshots. In another embodiment, the production cluster identifies a snapshot to restore and queries the indexing service to compute the deltas between the snapshot to be restored and a reference snapshot. The indexing service returns a set of segments that indicates the changed delta regions between the two snapshots. The production cluster then issues a direct read to the object store over the bypass data path to read the changed delta segments.
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公开(公告)号：US11620214B2
公开(公告)日：2023-04-04
申请号：US17161323
申请日：2021-01-28
Applicant: NUTANIX, INC.
Inventor： Rohit Jain , Tabrez Parvez Memon , Pradeep Kashyap Ramaswamy
IPC: G06F12/02 , G06F11/14 , G06F12/0868
Abstract: Various embodiments set forth techniques for transactional allocation and deallocation of blocks in a block store. A first technique includes sending a first request that causes a non-persistent allocation of a block. The first technique also includes adding a first entry in a log recording the allocation as tentative, sending a second request that causes persistence of the allocation, and adding a second entry in a log recording the allocation as finalized. A second technique includes adding a first entry in a log recording a deallocation of a block, sending a first request that causes the deallocation of the block and causes the block to be unavailable for reallocation in a non-persistent manner, adding a second entry in the log recording that the deallocation is finalized, and sending a second request that causes the block to be made available for reallocation.
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公开(公告)号：US20240168854A1
公开(公告)日：2024-05-23
申请号：US18116413
申请日：2023-03-02
Applicant: Nutanix, Inc.
Inventor： Praveen Kumar Padia , Deepak Narayan , Kamalneet Singh , Monil Devang Shah , Pradeep Kashyap Ramaswamy , Prakash Narayanasamy , Vinayak Hindurao Khot , Vivek Venkatesan
CPC classification number: G06F11/2046 , G06F9/45558 , G06F11/1662 , G06F11/2023 , G06F2009/45583 , G06F2201/85
Abstract: A technique utilizes grafting and differential based (diff-based) data seeding to hydrate a special virtual disk (vdisk) on a multi-node cluster with data changes (differences) between a reference vdisk stored on the cluster and a snapshot stored in an external repository to enable failover (including failback) recovery of an application workload in a disaster recovery environment. The application workload is stored as a workload vdisk on local storage of the cluster and snapshots of the workload vdisk are generated and organized as a vdisk chain on the cluster. One or more snapshots of the vdisk chain may be replicated to the external repository using a long-term snapshot service. Each replicated snapshot may be backed up from the cluster to the external repository at the granularity of a vdisk, referred to herein as an external datasource disk. The special vdisk is a thinly provisioned, datasource-backed vdisk that is grafted onto the vdisk chain, e.g., as a child vdisk of the reference vdisk. The differences between the reference vdisk and datasource disk are seeded from the datasource disk to hydrate the datasource-backed vdisk.
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公开(公告)号：US20220138095A1
公开(公告)日：2022-05-05
申请号：US17161518
申请日：2021-01-28
Applicant: NUTANIX, INC.
Inventor： Rohit Jain , Pradeep Kashyap Ramaswamy
IPC: G06F12/02
Abstract: Various embodiments set forth techniques for free space management in a block store. The techniques include receiving a request to allocate one or more blocks in a block store, accessing a sparse hierarchical data structure to identify an allocator page identifying a region of a backing store having a greatest number of free blocks, and allocating the one or more blocks.
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