US 2024/0403322 A1Published application

Techniques for adding and removing storage objects from groups

AssigneeDell Products L.P.

InventorsDmitry Nikolayevich Tylik, Vasudevan Subramanian, Girish Sheelvant

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Abstract

Techniques can include: establishing synchronous replication configurations between first and second sites for a group of stretched resources and a stretched resource; and performing processing that adds the stretched resource to the group. While both the group and stretched resource are in an active-active state and replicating data, existing replication session objects associated with stretched resource on both sites can be deleted while retaining remaining portions of layered services stacks corresponding to the stretched resource on both sites. A first remaining portion can be added to a first replication session object corresponding to the group on the first site. A second remaining portion can be added to a second replication session object corresponding to the group on the second site. Even though the existing replication session objects associated with the stretched resource may be deleted, the existing configuration corresponding to the stretched object can be retained.

Claims20

Dependent claims

One or more non-transitory computer readable media comprising code stored thereon that, when executed, performs a method comprising:

establishing a first synchronous replication configuration for a group of one or more existing stretched resources, wherein each of the existing stretched resources of the group is configured from a first local resource of a first site and a second local resource of a second site, wherein the first local resource of the first site and the second local resource of the second site for said each existing stretched resource are configured to have a same resource identity as presented to a host;
establishing a second synchronous replication configuration for a first stretched resource, wherein the first stretched resource is configured as an existing stretched resource from a third local resource of the first site and a fourth local resource of the second site, wherein the third local resource of the first site and the fourth local resource of the second site for said first stretched resource are configured to have a same first resource identity as presented to the host;
and
performing first processing that adds the first stretched resource to the group of one or more existing stretched resources, wherein the first stretched resource is configured as an existing stretched resource prior to performing said first processing, wherein said first processing includes:
while retaining a first remaining portion of a first layered services stack of the first site that corresponds to the first stretched resource, deleting a first replication session object of the first layered services stack of the first site;
while retaining a second remaining portion of a second layered services stack of the second site that corresponds to the first stretched resource, deleting a second replication session object of the second layered services stack of the second site;
associating the first remaining portion of the first layered services stack, corresponding to the first stretched resource, with a third replication session object of a third layered services stack of the first site corresponding to the group thereby adding the first remaining portion of the first layered services stack to the third layered services stack corresponding to the group on the first site;
and
associating the second remaining portion of the second layered services stack, corresponding to the first stretched resource, with a fourth replication session object of a fourth layered services stack of the second site corresponding to the group thereby adding the second remaining portion of the second layered services stack to the fourth layered services stack corresponding to the group on the second site.

6 more elements

A computer-implemented method comprising:

establishing a first synchronous replication configuration for a group of one or more existing stretched resources, wherein each of the existing stretched resources of the group is configured from a first local resource of a first site and a second local resource of a second site, wherein the first local resource of the first site and the second local resource of the second site for said each existing stretched resource are configured to have a same resource identity as presented to a host;
and
performing first processing that removes a first stretched resource from the group, wherein said first processing includes:
creating a first replication session object for the first stretched resource on the first site;
creating a second replication session object for the first stretched resource on the second site;
while all members of the group are in an active-active state and synchronously replicate data in accordance with the first synchronous replication configuration, removing the first stretched resource from the group on the first site and the second site while retaining a first current configuration of the first stretched resource, wherein the first current configuration retained includes a first portion of a first layered services stack of the first site, wherein the first portion corresponds to the first stretched resource, and wherein the first layered services stack corresponds to the group on the first site, and wherein the first current configuration retained includes a second portion of a second layered services stack of the second site, wherein the second portion corresponds to the first stretched resource, and wherein the second layered services stack corresponds to the group on the second site;
associating the first stretched resource with the first replication session object on the first site, wherein said associating the first stretched resource includes associating the first portion of the first layered services stack with the first replication object corresponding to the first stretched resource on the first site thereby forming a third layered services stack corresponding to the first stretched resource on the first site;
and
associating the first stretched resource with the second replication session object on the second site, wherein said associating the second stretched resource includes associating the second portion of the second layered services stack with the second replication object corresponding to the first stretched resource on the second site thereby forming a fourth layered services stack corresponding to the first stretched resource on the second site.

6 more elements

A system comprising:

one or more processors;
and
one or more memories comprising code stored therein that, when executed, performs a method comprising:
establishing a first synchronous replication configuration for a group of one or more existing stretched resources, wherein each of the existing stretched resources of the group is configured from a first local resource of a first site and a second local resource of a second site, wherein the first local resource of the first site and the second local resource of the second site for said each existing stretched resource are configured to have a same resource identity as presented to a host;
and
performing first processing that removes a first stretched resource from the group, wherein said first processing includes:
creating a first replication session object for the first stretched resource on the first site;
creating a second replication session object for the first stretched resource on the second site;
while all members of the group are in an active-active state and synchronously replicate data in accordance with the first synchronous replication configuration, removing the first stretched resource from the group on the first site and the second site while retaining a first current configuration of the first stretched resource, wherein the first current configuration retained includes a first portion of a first layered services stack of the first site, wherein the first portion corresponds to the first stretched resource, and wherein the first layered services stack corresponds to the group on the first site, and wherein the first current configuration retained includes a second portion of a second layered services stack of the second site, wherein the second portion corresponds to the first stretched resource, and wherein the second layered services stack corresponds to the group on the second site;
associating the first stretched resource with the first replication session object on the first site, wherein said associating the first stretched resource includes associating the first portion of the first layered services stack with the first replication object corresponding to the first stretched resource on the first site thereby forming a third layered services stack corresponding to the first stretched resource on the first site;
and
associating the first stretched resource with the second replication session object on the second site, wherein said associating the second stretched resource includes associating the second portion of the second layered services stack with the second replication object corresponding to the first stretched resource on the second site thereby forming a fourth layered services stack corresponding to the first stretched resource on the second site.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/802,574Filed 13 Aug 2024
Priority: 2 May 2023
Published: 5 Dec 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G06F 16/275
Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system…:…
G06F 3/065
Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems: replication mechanisms
G06F 3/067
Adopting a particular infrastructure: distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
G06F
Computing and data processing

Family

Application18/142,224Continuation · filed 2 May 2023
Application18/802,574Continuation
US 12,086,159 B1Related patent
US 12,436,972 B2Related patent
US 2024/0403322 A1This patent

From the US filing history. Foreign family members aren’t listed.