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A method and system for online expansion of LUN

A capacity, host-side technology, applied in the storage field, can solve problems such as inability to stop business, discarding old data, redundant configuration, etc.

Active Publication Date: 2020-09-22
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the increasing data, the capacity of the LUN planned at the initial implementation may not meet the requirements of the data increase, so the old data can only be deleted or a LUN is remapped to redeploy the environment, which will lead to the discarding of old data or redundant configuration Work
Moreover, due to the continuity of the business, the storage system cannot stop the business and expand the capacity before going online

Method used

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  • A method and system for online expansion of LUN
  • A method and system for online expansion of LUN
  • A method and system for online expansion of LUN

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see figure 1 A method for online LUN expansion provided by Embodiment 1 of the present invention and figure 2 A schematic structural diagram of an online LUN expansion system provided in Embodiment 1 of the present invention, the method is applicable to the online LUN expansion system, and the system includes a host terminal 1 and a storage terminal 2, wherein the host terminal communicates with the storage area network through a storage area network The storage end establishes a connection, the host end includes an initiator 11, the storage end includes a virtual volume module 21 and a target end 22, and the LUN online expansion method includes the following steps:

[0046] S11. The storage terminal sends the mapping corresponding to the LUN to the host terminal through storage configuration;

[0047] S12. The host side sets the LUN as a corresponding block device for management through the mapping corresponding to the LUN;

[0048] S13. The virtual volume module expa...

Embodiment 2

[0056] Referring to embodiment one of the present invention and figure 1 The specific process of steps S11 to S15 described in , and see figure 2 The structure schematic diagram of the LUN online expansion system provided in Embodiment 2 of the present invention, after the host end and the storage end are divided into specific modules, the host end 1 includes a device management module 12 in addition to the initiator end 11, so The online LUN expansion method also includes:

[0057] The device management module 12 manages the block device on the host side to obtain the updated capacity of the LUN, and identifies the newly added capacity of the LUN.

[0058] Specifically, the main purpose of identifying the newly added capacity of the LUN by the device management module is to manage it as a block device and implement specific application services on the block device.

[0059] Correspondingly, the storage terminal 2 also includes a storage pool module 20, and the method furth...

Embodiment 3

[0071] Corresponding to the LUN online expansion method disclosed in the first and second embodiments of the present invention, the third embodiment of the present invention also provides an online LUN expansion system, see image 3 , the system includes: a host end 1 and a storage end 2, the host end 1 establishes a connection with the storage end 2 through a storage area network, the host end 1 includes an initiator 11, and the storage end 2 includes a virtual volume module 21 and target end 22, wherein,

[0072] The storage terminal 2 is configured to send the mapping corresponding to the LUN to the host terminal through storage configuration;

[0073] The host terminal 1 is configured to set the LUN as a corresponding block device for management through the mapping corresponding to the LUN;

[0074] The virtual volume module 21 is configured to expand the capacity of the virtual volume corresponding to the LUN, and send an instruction of successful expansion to the target...

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Abstract

The invention discloses a LUN online capacity expansion method and system. The method is suitable for the LUN online capacity expansion system which comprises a host end composed of an initiating end and a storage end composed of a virtual volume module and a target end, the storage end sends mapping corresponding to LUN to the host end, the host end manages LUN setting block equipment, the virtual volume module expands capacity of a virtual volume corresponding to the LUN, the target end updates capacity of the LUN in a data structure, creates unit attention messages of LUN capacity change and stores the same into a unit attention chain table; when the initiating end initiates a business request to the target end, whether the capacity of the virtual volume corresponding to the LUN is changed or not is judged according to the unit attention chain table, if yes, the capacity of the LUN is updated. The objective of online capacity expansion of the LUN of the storage system is achieved without interruption of storage business.

Description

technical field [0001] The present invention relates to the field of storage technology, in particular to a storage system LUN online expansion method and system. Background technique [0002] Existing storage systems generally undertake core tasks and require uninterrupted data services. The SAN (Storage Area Network, storage area network) storage system provides the server (or the host) with LUN (Logical Unit Number, Logical Unit Number) one by one, which can be understood as a piece by piece The server can create a file system on the LUN or perform related operations such as running data on the bare disk. [0003] With the increase of data, the capacity of LUN planned at the initial implementation may not meet the requirements of data increase, so the old data can only be deleted or remapped to a LUN to redeploy the environment, which will lead to the discarding of old data or redundant configuration Work. Moreover, due to the continuity of the business, the storage sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/0631G06F3/0665G06F3/067
Inventor 唐金荣吴庆民施培任
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD