A data processing method and related storage device

A storage device and data processing technology, which is applied in the storage field and can solve problems such as the inability to implement the reservation preemption method

Active Publication Date: 2019-07-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, existing technologies must rely on Fiber Channel (FC for short) switches to implement NPIV technology
In the networking scenario without FC switches, the above reservation preemption method cannot be implemented, which has great limitations

Method used

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  • A data processing method and related storage device
  • A data processing method and related storage device
  • A data processing method and related storage device

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Experimental program
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Embodiment Construction

[0029] Firstly, the application environment of the data processing method provided by the present invention is introduced below. The data processing system of the present invention can be a storage area network (Storage Area Network, referred to as SAN), or a direct-attached storage (Direct-Attached Storage, referred to as SAN). DAS) system. Taking SAN as an example, the data processing system of the present invention will be introduced in detail below. see image 3 , The SAN system includes: a host cluster, a SAN switching network, and a storage array.

[0030] A host cluster includes several hosts, each of which is also called a cluster node. Each host is connected to the storage device through the SAN switching network. Each host can include one or more ports, for example, host A includes P10, P11, host B includes P20, P21, etc., such as Figure 4 shown.

[0031] SAN switching network: It is a dedicated Fiber Channel network connecting storage devices and hosts, consis...

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Abstract

The invention discloses a data processing method, comprising: a first storage device receives a first reservation preemption command sent by a host through a target port, and the first reservation preemption command includes a port identifier of the target port and a reserved key to be verified and the LUN; determine the forwarding port corresponding to the target port according to the preset port mapping relationship, and encapsulate the reserved key to be verified, the LUN, the port ID of the target port, and the port ID of the forwarding port to obtain a second reserved preemption command, The second reservation preemption command is sent to the second storage device through the forwarding port, and the second storage device performs a reservation preemption operation according to the port identifier of the target port. The present invention also provides a related storage device capable of implementing the above data processing method. The present invention can ensure the consistency of data between different storage arrays when a split-brain occurs in the host cluster during the online data migration process of different storage arrays, and does not rely on fiber channel switches, and has wider applicable scenarios.

Description

technical field [0001] The present invention relates to the technical field of storage, in particular to a data processing method and a related storage device. Background technique [0002] In a data processing system composed of a host cluster and several storage arrays, if data migration is to be implemented between the new storage array (hereinafter referred to as the first storage array) and the original storage array (hereinafter referred to as the second storage array), then In the preparation stage of data migration, the following steps need to be performed: mapping the logical unit (LogicalUnit, LU for short) of the second storage array to the first storage array through the logical unit number (Logical Unit Number, LUN for short) mapping method; Create virtual LUs in the first storage array, and establish the corresponding relationship between the LUs to be migrated and the virtual LUs; after the LUs to be migrated are mapped to the host through the first storage ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06H04L45/74H04L49/111
CPCG06F3/061G06F3/0614G06F3/0647G06F3/067G06F3/0637G06F3/065G06F3/0659G06F3/0622H04L45/745H04L49/357H04L49/3009H04L2101/631
Inventor 曾海涛
Owner HUAWEI TECH CO LTD
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