Dell Products Inc.

Emc IP Holding Company LLC

Mingyi Luo

Hongyuan Zeng

Ruiyang Zhang

Weilan Pu

Jian Kang

Jianfei Yang

Chenglin Li

Srinivasa Raju Chamarthy

Chaojun Zhao

Hao Wang

Jia Huang

Si Zhang

Lifeng Zheng

Embodiments of multi-host link aggregation are described for active-active cluster implementations. In one or more embodiments, a multi-host LAG bond in the cluster is created with a bond MAC address designated for the bond. Afterwards, a virtual IP address may be created for all hosts within the multi-host LAG bond. Compared with existing active-active cluster implementation, the presented multi-host link aggregation embodiments do not require extra entities, e.g., load balancer or DNS, which could be a failure point or performance bottleneck, thus makes the active-active cluster implementations more efficient and robust. With the Multi-Host LACP bond and virtual IP on all hosts, the cluster may have increased bandwidth to the cluster service and utilize computing capacity in a network switch for improved workload distribution.

Multi-host link aggregation for active-active cluster

An apparatus comprises at least one processing device configured to receive, by at least one network switch, a communication comprising a virtual logical device tag. The processing device is also configured, responsive to determining that the virtual logical device tag is a host-specific virtual logical device tag associated with a given host-specific virtual logical device of a given host device that is part of a multi-host link aggregation bond, to direct the communication to a given link for the given host device. The processing device is further configured, responsive to determining that the virtual logical device tag is a service-generic virtual logical device tag for a service provided by host devices which are part of the multi-host link aggregation bond) collectively, to select one of the host devices in accordance with a distribution algorithm and to direct the communication to a selected link for the selected host device.

Managing communications for host devices which are part of a multi-host link aggregation group

A method, an electronic device, and a computer program product for managing a file system are provided. For example, the method comprises causing multiple data blocks to be written to a storage space of the file system, the size of each of the multiple data blocks being not lower than a threshold size, and creating at least one space fragment in the storage space, the size of each of the at least one space fragment not exceeding the threshold size. Therefore, this solution can quickly and efficiently age a file system.

Method, electronic device, and computer program product for managing file system

Techniques involve: acquiring a first source snapshot for a source storage object stored in a source storage device; determining first difference data between the first source snapshot and the source storage object or a second source snapshot for the source storage object, creation time of the first source snapshot being associated with creation time of the second source snapshot; and sending the first difference data to a destination storage device to enable the destination storage device to create a first destination snapshot for a destination storage object stored in the destination storage device based on the first difference data. Such techniques can migrate snapshots more efficiently to improve storage management efficiency.

Method, electronic device and computer program product for storage management

A shared storage dynamic user quota system includes a storage management device coupled to a storage system having a shared storage space. The storage management device receives a data storage request from a user device to store data in the shared storage space. If the storage management device determines that the storage of the data in the shared storage space will exceed a user storage quota for a user associated with the user device, it determines whether the user qualifies to store the data in the shared storage space and exceed the user storage quota. In response to determining that the user qualifies to store the data in the shared storage space and exceed the user storage quota, the storage management device stored the data in the shared storage space.

Shared storage dynamic user quota system

Techniques for disk failure control involve determining the number of failed disks in a Redundant Array of Independent Disks (RAID). The techniques further involve comparing the number of failed disks with a predetermined threshold; and in accordance with a determination that the number of failed disks exceeds the predetermined threshold, setting at least one non-failing disk in the RAID into a protection mode to prevent the at least one non-failing disk from being disconnected. Such techniques facilitate prevention of the user data loss in the RAID.

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Chengdu, China

Mingyi Luo