WO2016188373A1

WO2016188373A1 - Method and apparatus for fusing san and nas storage architectures in storage system

Info

Publication number: WO2016188373A1
Application number: PCT/CN2016/082806
Authority: WO
Inventors: 张鹏; 张国彬; 叶茂
Original assignee: 华为技术有限公司
Priority date: 2015-05-25
Filing date: 2016-05-20
Publication date: 2016-12-01
Also published as: CN104994135A; CN104994135B

Abstract

Provided in an embodiment of the present invention are a method and apparatus for fusing SAN (Storage Area Network) and NAS (Network Attached Storage) storage architectures in a storage system. The method for fusing SAN and NAS storage architectures in a storage system comprises: receiving a first data writing request sent by a network host connected by means of SAN physical connection; the first data writing request comprising first data to be written and a first logic address corresponding to the first data to be written; determining a physical address corresponding to the first logic address according to a corresponding relationship between the first logic address and the physical address; and storing the first data to be written according to the physical address corresponding to the first logic address. The present invention solves the problem in the prior art that there is a relatively low storage efficiency of the SAN storage architecture in the storage system.

Description

Method and device for integrating SAN and NAS storage architecture in storage system

Technical field

Embodiments of the present invention relate to a storage technology, and in particular, to a method and an apparatus for converging a SAN and a NAS storage architecture in a storage system.

Background technique

At present, network storage storage (NAS: Network Attached Storage) and storage area network (SAN: Storage Area Network) storage architecture have been integrated. In this way, the same storage system can realize a SAN storage architecture based on high-speed data transmission and a NAS storage architecture for file sharing between multiple network hosts.

In the prior art, for a storage system that combines two SAN and NAS storage architectures, when the storage system receives a data write request sent by a network host connected by a physical connection manner of a NAS or a SAN (the write request includes data to be written and When the logical address corresponding to the data to be written is): the storage system first allocates a corresponding physical address for the logical address corresponding to the data to be written; and then determines whether the allocated physical address is previously assigned to another logical address, and if so, Then, the space corresponding to the physical address is released; finally, the data to be written is stored in the physical address corresponding to the logical address corresponding to the data to be written.

However, in the prior art, when the SAN storage architecture performs storage, it is required to allocate a physical address and release the space corresponding to the physical address; therefore, there is a problem that the storage efficiency of the SAN storage architecture in the storage system is low.

Summary of the invention

The embodiment of the invention provides a method and a device for converging a SAN and a NAS storage architecture in a storage system, which are used to solve the SAN storage architecture in the storage system existing in the prior art. The problem of low storage efficiency.

In a first aspect, the present invention provides a method for converging a SAN and a NAS storage architecture in a storage system, the storage system being configured to provide a service to a network host, the method comprising:

Receiving a first data write request sent by a network host connected by a physical connection manner of the SAN; the first data write request includes a first to-be-written data and a first logical address corresponding to the first to-be-written data;

Determining, according to the correspondence between the first logical address and the physical address, a physical address corresponding to the first logical address;

And storing the first to-be-written data according to the physical address corresponding to the first logical address.

With reference to the first aspect, in a first possible implementation manner of the first aspect, after the storing the first to-be-written data according to the physical address corresponding to the first logical address, the method further includes:

Receiving a second data write request sent by the network host connected by the physical connection mode of the NAS; the second data write request includes the second to-be-written data and the second logical address corresponding to the second to-be-written data;

Allocating a corresponding physical address to the second logical address;

The second to-be-written data is stored according to a physical address allocated for the second logical address.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the second to be written according to the physical address allocated for the second logical address Before the data is stored, it also includes:

Determining whether a physical address assigned to the second logical address is assigned to another logical address;

If yes, after the space corresponding to the physical address allocated for the second logical address is released, the second to-be-written data is stored according to the physical address allocated for the second logical address. step;

Otherwise, the step of storing the second data to be written is performed according to the physical address assigned to the second logical address.

In a second aspect, the present invention provides a method for converging a SAN and a NAS storage architecture in a storage system, the storage system being configured to provide a service to a network host, the method comprising:

Receiving a data write request, where the data write request includes a data to be written and a logical address corresponding to the data to be written;

Determining whether the data write request is sent by a network host connected by a physical connection manner of the SAN or by a network host connected by using a physical connection manner of the NAS;

If the data write request is sent by a network host connected by a physical connection mode of the SAN, determining a physical address corresponding to the logical address according to the correspondence between the logical address and the physical address, and according to the logic a physical address corresponding to the address, and storing the data to be written;

If the data write request is sent by a network host connected by using a physical connection mode of the NAS, assign a corresponding physical address to the logical address, and write the to-be-written according to the physical address assigned to the logical address. Into the data for storage.

With reference to the second aspect, in a first possible implementation manner of the second aspect, before the storing the data to be written according to the physical address allocated for the logical address, the method further includes:

Determining whether a physical address assigned to the logical address is assigned to another logical address;

If yes, after the space corresponding to the physical address allocated to the logical address is released, the step of storing the data to be written according to the physical address allocated for the logical address is performed;

Otherwise, the step of storing the data to be written according to the physical address assigned to the logical address is directly performed.

In a third aspect, the present invention provides a device for converging a SAN and a NAS storage architecture in a storage system, the storage system is configured to provide a service to a network host, and the device is a storage system, and the device includes:

a SAN module, configured to receive a first data write request sent by a network host connected by a physical connection manner of the SAN, where the first data write request includes the first data to be written and a first logical address corresponding to the first to-be-written data;

The copy-on-write COW module is configured to determine a physical address corresponding to the first logical address according to the correspondence between the first logical address and the physical address;

And a writing module, configured to store the first to-be-written data according to a physical address corresponding to the first logical address.

In conjunction with the third aspect, in a first possible implementation manner of the third aspect, the device further includes:

a NAS module, configured to receive a second data write request sent by a network host connected by a physical connection manner of the NAS; the second data write request includes a second to-be-written data and a second corresponding to the second to-be-written data Two logical addresses;

Redirecting a write ROW module, configured to allocate a corresponding physical address to the second logical address;

The writing module is further configured to store the second to-be-written data according to a physical address allocated for the second logical address.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation manner of the third aspect, the ROW module is further configured to:

If yes, the space corresponding to the physical address allocated for the second logical address is released.

In a fourth aspect, the present invention provides an apparatus for converging a SAN and a NAS storage architecture, the storage system for providing a service to a network host, the apparatus comprising:

a receiving module, configured to receive a data write request, where the data write request includes a data to be written and a logical address corresponding to the data to be written;

a processing module, configured to determine whether the data write request is sent by a network host connected by a physical connection manner of the SAN or by a network host connected by using a physical connection manner of the NAS; if the data write request is by using a SAN When the network host connected to the physical connection is sent, the physical address corresponding to the logical address is determined according to the correspondence between the logical address and the physical address, and corresponding to the logical address. a physical address, the data to be written is stored; if the data write request is sent by a network host connected by a physical connection mode of the NAS, the logical address is assigned a corresponding physical address, and The physical address assigned by the logical address stores the data to be written.

In conjunction with the fourth aspect, in a first possible implementation manner of the fourth aspect, the processing module is further configured to:

If so, the space corresponding to the physical address assigned to the logical address is released.

In a fifth aspect, the present invention provides an apparatus for converging a SAN and a NAS storage architecture in a storage system, where the storage system is configured to provide a service to a network host, and the apparatus includes:

a communication interface, configured to receive a first data write request sent by a network host connected by a physical connection manner of the SAN; the first data write request includes a first to-be-written data and a first corresponding to the first to-be-written data a logical address;

a processor, configured to determine, according to the correspondence between the first logical address and the physical address, a physical address corresponding to the first logical address, and according to the physical address corresponding to the first logical address, to the first The data to be written is stored.

In conjunction with the fifth aspect, in a first possible implementation manner of the fifth aspect, the communication interface is further configured to:

The processor is further configured to:

Allocating a corresponding physical address for the second logical address, and storing the second to-be-written data according to the physical address allocated for the second logical address.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the processor is further configured to:

Determining whether the physical address assigned to the second logical address is assigned to another Logical address

In a sixth aspect, the present invention provides an apparatus for converging a SAN and a NAS storage architecture in a storage system, where the storage system is configured to provide a service to a network host, and the apparatus includes:

The communication interface is connected to the network through a physical connection manner of the SAN and a physical connection manner of the NAS, and is configured to receive a data write request, where the data write request includes a to-be-written data and a logical address corresponding to the to-be-written data; And determining whether the data write request is sent by a network host connected by a physical connection manner of the SAN or by a network host connected by using a physical connection manner of the NAS; if the data write request is by using a SAN When the network host connected to the physical connection is sent, the physical address corresponding to the logical address is determined according to the correspondence between the logical address and the physical address, and the to-be-written is performed according to the physical address corresponding to the logical address. Entering data for storage; if the data write request is sent by a network host connected by a physical connection mode of the NAS, assigning a corresponding physical address to the logical address, and according to the physical address allocated for the logical address, The data to be written is stored.

In conjunction with the sixth aspect, in a first possible implementation manner of the sixth aspect, the processor is further configured to:

The present invention provides a method and an apparatus for converging a SAN and a NAS storage architecture in a storage system, by determining a physical address corresponding to the first logical address according to a correspondence between the first logical address and a physical address; The write request is mainly a SAN storage architecture for the data write request of the "overwrite write" mode. When the storage system receives the first data write request sent by the network host connected by the physical connection mode of the SAN, the storage system can directly pass the first logic. Corresponding relationship between the address and the physical address, determining a physical address corresponding to the first logical address; avoiding the first logic when receiving the first data write request The physical address corresponding to the address allocation, and the process of releasing the space corresponding to the physical address allocated for the first logical address; improving the storage efficiency of the SAN storage architecture.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic diagram of an application scenario of a method for converging a SAN and a NAS storage architecture in a storage system according to the present invention;

2A is a schematic structural view 1 of a storage system of the present invention;

2B is a second schematic structural diagram of a storage system according to the present invention;

3 is a flowchart of Embodiment 1 of a method for converging a SAN and a NAS storage architecture in a storage system according to the present invention;

4 is a flowchart of Embodiment 2 of a method for converging a SAN and a NAS storage architecture in a storage system according to the present invention;

5 is a flowchart of Embodiment 3 of a method for converging a SAN and a NAS storage architecture in a storage system according to the present invention;

6 is a schematic structural diagram of Embodiment 1 of an apparatus for converging a SAN and a NAS storage architecture in a storage system according to the present invention;

7 is a schematic structural diagram of Embodiment 2 of an apparatus for converging a SAN and a NAS storage architecture in a storage system according to the present invention;

8 is a schematic structural diagram of Embodiment 3 of an apparatus for converging a SAN and a NAS storage architecture in a storage system according to the present invention;

FIG. 9 is a schematic structural diagram of Embodiment 4 of an apparatus for converging a SAN and a NAS storage architecture in a storage system according to the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a schematic diagram of an application scenario of a method for converging a SAN and a NAS storage architecture in a storage system according to the present invention; as shown in FIG. 1 , a storage system and a network host 1 are connected by a physical connection manner of a NAS storage architecture; a storage system and a network; Host 2 is connected by a physical connection of the SAN storage architecture. In this way, the same storage system can implement a SAN storage architecture based on high-speed data transmission and a NAS storage architecture for file sharing between multiple hosts. In the SAN storage architecture, the network host 2 and the storage system can be interconnected through an Internet Protocol (IP) network or a Fibre Channel (FC) network, and based on the Internet Small Computer Interface (iSCSI, Internet SCSI). Protocol or FC protocol interaction; in the NAS architecture, the network host 1 and the storage system are connected by an IP network, and based on a Common Internet File System (CIFS) protocol or a Network File System (NFS) protocol. Interact.

When the storage system receives the data write request sent by the network host 1 or the network host 2 (the write request includes the data to be written and the logical address corresponding to the data to be written), the processing method adopted by the storage system is: firstly The logical address corresponding to the data to be written is assigned a corresponding physical address; then, it is determined whether the allocated physical address is previously allocated to another logical address, and if so, the space corresponding to the physical address is released; The write data is stored in the physical address corresponding to the logical address corresponding to the data to be written. However, if the physical address corresponding to the logical address is first allocated, and then the space corresponding to the physical address is released, the processing method of storing the data to be written has a problem that the storage efficiency of the SAN storage architecture is low. .

2A is a schematic structural diagram 1 of a storage system according to the present invention. As shown in FIG. 2A, the storage system includes: an IP interface, a storage processor, and a serial SCSI. (SAS interface, Serial Attached SCSI) and hard disk. The IP interface is connected to the network through the physical connection mode of the SAN and the physical connection mode of the NAS, and is used for receiving a data write request; the hard disk is used to store data; and the storage processor is configured to receive a data write request according to the IP interface through the SAS. The interface writes data to the hard disk.

2B is a schematic structural diagram 2 of the storage system of the present invention. As shown in FIG. 2B, the storage system includes: an IP interface, an FC interface, a storage processor, a serial SCSI, and a hard disk. The IP interface is connected to the network through the physical connection mode of the NAS, and is used for receiving a data write request. The FC interface is used to connect to the network through a physical connection manner of the SAN, and is used for receiving a data write request; the hard disk is used for storing Data; the storage processor is configured to write data to the hard disk through the SAS interface according to the data write request received by the IP interface and the FC interface.

It should be noted that the hard disk in FIG. 2A and FIG. 2B is used as a storage unit for storing data; the hard disk in FIG. 2A and FIG. 2B may also be replaced with other storage devices; and the corresponding interface between the storage device and the storage processor is also A corresponding change should occur.

3 is a flowchart of Embodiment 1 of a method for merging a SAN and a NAS storage architecture in a storage system according to the present invention. As shown in FIG. 3, the method in this embodiment may include:

Step 301: The storage system receives a first data write request sent by a network host connected by a physical connection manner of the SAN, where the first data write request includes a first to-be-written data and a first corresponding to the first to-be-written data. a logical address;

Step 302: The storage system determines a physical address corresponding to the first logical address according to a correspondence between the first logical address and a physical address.

Step 303: The storage system stores the first to-be-written data according to a physical address corresponding to the first logical address.

It should be noted that, the storing, by the physical address corresponding to the first logical address, the first to-be-written data may be: the physics corresponding to the processor in the storage system according to the first logical address. An address that writes the first to-be-written data to a storage unit in the storage system.

In the prior art, when receiving a data write request sent by a network host connected by a physical connection mode of a SAN (or NAS), it is necessary to first assign a corresponding physical address to the logical address, and then determine the physical address assigned to the logical address. The corresponding space has been released On the premise, the write data is stored; since the SAN storage architecture is usually used to store structured data (for example, a database), its data write request is mainly a data write request of "overwrite write" mode, so it is stored for SAN. The architecture allocates a corresponding physical address to the logical address for each data write request, and the storage efficiency of the SAN storage architecture is low.

In the embodiment of the present invention, the first data write request sent by the network host connected by using the physical connection mode of the SAN, the first data write request includes the first data to be written and the first data to be written a first logical address; determining, according to a correspondence between the first logical address and the physical address, a physical address corresponding to the first logical address; and causing a SAN write request for a data write request that is mainly an "overwrite write" mode for a data write request The storage system can determine the first logical address corresponding to the first logical address by directly corresponding to the first logical address and the physical address when the storage system receives the first data write request sent by the network host connected by the physical connection mode of the SAN. The physical address processing is a data write request sent by a network host connected by a physical connection mode of the SAN (that is, the storage system adopts copy-on-write (COW); avoiding when receiving the first data write request The first logical address is assigned a corresponding physical address, and the space corresponding to the physical address assigned to the first logical address is released Processing of the release; improving the storage efficiency of the SAN storage architecture. At the same time, the content corresponding to the logical address in the data write request of the "overwrite write" mode is continuously updated; therefore, the present invention is based on the logical address and the physical address. The correspondence determines the physical address of the data to be stored, and improves the storage efficiency of the SAN storage architecture while ensuring proper storage of the data to be stored.

4 is a flowchart of Embodiment 2 of a method for merging a SAN and a NAS storage architecture in a storage system according to the present invention. As shown in FIG. 4, the embodiment may further include:

Step 401: The storage system receives a second data write request sent by a network host connected by a physical connection mode of the NAS, where the second data write request includes a second to-be-written data and the second to-be-written data. Second logical address;

It should be noted that there is no order between step 401 and step 301.

Step 402: The storage system allocates a corresponding physical location to the second logical address. site;

Step 403: The storage system determines whether a physical address allocated by the second logical address is allocated to another logical address.

If yes, go to step 404; otherwise, go to step 405;

Step 404: The storage system releases a space corresponding to a physical address allocated for the second logical address.

It should be noted that after step 404 is performed, step 405 is performed.

Step 405: The storage system stores the second to-be-written data according to a physical address allocated for the second logical address.

In the prior art, the data write request of the NAS storage architecture is mainly a data write request of the “new write” mode; in this embodiment, the second data write request sent by the network host connected by using the physical connection mode of the NAS is received; The second data write request includes a second logical address to be written and a second logical address corresponding to the second to-be-written data; and a physical connection using the NAS is processed by assigning a corresponding physical address to the second logical address. The data write request sent by the connected network host (that is, the storage system adopts ROW (Redirect-on-write); the NAS storage architecture that makes the data write request mainly for the "rewrite" mode data write request. The storage system can allocate a corresponding physical address to the second logical address when receiving the second data write request sent by the network host connected by the physical connection mode of the NAS. For the storage system that integrates the storage architecture of the SAN and the NAS, The application scenarios corresponding to the SAN and the NAS are implemented, and the corresponding processing method is adopted (that is, the COW processing method adopted for the SAN is adopted for the NAS. ROW is handled).

FIG. 5 is a flowchart of Embodiment 3 of a method for merging a SAN and a NAS storage architecture in a storage system according to the present invention. As shown in FIG. 5, the method in this embodiment may include:

Step 501: The storage system receives a data write request, where the data write request includes a to-be-written data and a logical address corresponding to the to-be-written data.

Step 502: The storage system determines whether the data write request is sent by a network host connected by a physical connection mode of the SAN or by a network host connected by a physical connection mode of the NAS;

Step 503: If the data write request is sent by a network host connected by using a physical connection mode of the SAN, the storage system determines the physics corresponding to the logical address according to the correspondence between the logical address and the physical address. Addressing, and storing the data to be written according to the physical address corresponding to the logical address; if the data write request is sent by a network host connected by a physical connection mode of the NAS, the storage system is The logical address allocates a corresponding physical address, and stores the to-be-written data according to a physical address allocated for the logical address.

Optionally, the storing the data to be written according to the physical address allocated to the logical address may further include:

Determining whether a physical address allocated to the logical address is assigned to another logical address; if yes, releasing a space corresponding to the physical address allocated for the logical address, and then performing performing according to the logical address assigned a physical address, a step of storing the data to be written; otherwise, directly performing a step of storing the data to be written according to a physical address allocated for the logical address.

In the prior art, when receiving a data write request sent by a network host connected by a physical connection mode of a SAN (or NAS), it is necessary to first assign a corresponding physical address to the logical address, and then determine the physical address assigned to the logical address. On the premise that the corresponding space has been released, the data to be written is stored; since the SAN storage architecture is usually used to store structured data (for example, a database), the data write request is mainly written in the "overwrite write" mode. Request, therefore, for the SAN storage architecture, a logical address is assigned a corresponding physical address for each data write request, and there is a problem that the SAN storage architecture has low storage efficiency.

In the embodiment of the present invention, if the data write request is sent by a network host connected by using a physical connection mode of the SAN, determining the physics corresponding to the logical address according to the correspondence between the logical address and the physical address. Addressing, and storing the data to be written according to the physical address corresponding to the logical address; if the data write request is sent by a network host connected by a physical connection mode of the NAS, the logical address is Allocating a corresponding physical address, and storing the data to be written according to a physical address allocated for the logical address; so that the type of the data write request is mainly The SAN storage architecture is overwritten. When the storage system receives a data write request sent by a network host connected by a physical connection mode of the SAN, the storage system can directly determine the physical address corresponding to the logical address by the correspondence between the logical address and the physical address. The way to handle the data write request sent by the network host connected by the physical connection mode of the SAN (that is, the storage system adopts copy-on-write (COW); avoids the logical address when receiving the data write request. Allocating a corresponding physical address and releasing the space corresponding to the physical address allocated for the logical address; improving the storage efficiency of the SAN storage architecture; and simultaneously, corresponding to the logical address in the data write request of the "overwrite write" mode The content is continuously updated; therefore, the present invention determines the physical address of the data to be stored according to the correspondence between the logical address and the physical address, and can improve the storage efficiency of the SAN storage architecture while ensuring proper storage of the data to be stored. .

FIG. 6 is a schematic structural diagram of Embodiment 1 of a device for merging a SAN and a NAS storage architecture in a storage system according to the present invention. As shown in FIG. 6, the device in this embodiment may include: a SAN module 601, a COW module 602, and a write module 603. The SAN module 601 is configured to receive a first data write request sent by a network host connected by using a physical connection manner of the SAN, where the first data write request includes the first data to be written and the first data to be written. Corresponding first logical address; the COW module 602 is configured to determine a physical address corresponding to the first logical address according to a correspondence between the first logical address and a physical address; and a writing module 603, configured to The physical address corresponding to the first logical address stores the first to-be-written data.

The device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 3, and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 7 is a schematic structural diagram of Embodiment 2 of an apparatus for merging a SAN and a NAS storage architecture in a storage system according to the present invention; as shown in FIG. 7, the apparatus of this embodiment is further based on the apparatus structure shown in FIG. Including: NAS module 604 and ROW module 605. The NAS module 604 is configured to receive a second data write request sent by a network host connected by using a physical connection manner of the NAS, where the second data write request includes second to-be-written data and the second to-be-written data. Corresponding second logical address; ROW module 605, configured to allocate a corresponding physical address for the second logical address; and write module 603, And for storing the second data to be written according to a physical address allocated for the second logical address.

Optionally, the ROW module 605 is further configured to: determine whether a physical address allocated to the second logical address is allocated to another logical address; if yes, corresponding to a physical address allocated for the second logical address Space is released.

The device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 8 is a schematic structural diagram of Embodiment 3 of a device for converging a SAN and a NAS storage architecture in a storage system according to the present invention. As shown in FIG. 8 , the device in this embodiment may include: a receiving module 801 and a processing module 802. The receiving module 801 is configured to receive a data write request, where the data write request includes a logical address corresponding to the data to be written and the data to be written, and the processing module 802 is configured to determine that the data write request is used. The network host connected to the physical connection mode of the SAN is sent by the network host connected by the physical connection mode of the NAS; if the data write request is sent by the network host connected by the physical connection mode of the SAN, Corresponding relationship between the logical address and the physical address, determining a physical address corresponding to the logical address, and storing the data to be written according to the physical address corresponding to the logical address; if the data write request is When the network host connected by the physical connection mode of the NAS is sent, the logical address is assigned a corresponding physical address, and the data to be written is stored according to the physical address allocated for the logical address.

Optionally, the processing module 802 is further configured to: determine whether a physical address allocated to the logical address is allocated to another logical address; if yes, release a space corresponding to the physical address allocated for the logical address.

The device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 5, and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 9 is a schematic structural diagram of Embodiment 4 of an apparatus for converging a SAN and a NAS storage architecture in a storage system according to the present invention. As shown in FIG. 9, the apparatus in this embodiment may include: a communication interface 901 and a processor 902. The communication interface 901 is configured to receive a first data write request sent by a network host connected by a physical connection manner of the SAN; the first data write The request includes a first to-be-written data and a first logical address corresponding to the first to-be-written data; the processor 902, configured to determine, according to the correspondence between the first logical address and the physical address, the first a physical address corresponding to the logical address; storing the first to-be-written data according to the physical address corresponding to the first logical address.

Optionally, the communication interface 901 is further configured to receive a second data write request sent by a network host connected by using a physical connection manner of the NAS; the second data write request includes a second to-be-written data and the second to-be-written request Write a second logical address corresponding to the data; the processor 902 is further configured to allocate a corresponding physical address to the second logical address; and to read the second to be written according to the physical address allocated for the second logical address Into the data for storage.

Optionally, the processor 902 is further configured to: determine whether a physical address allocated to the second logical address is assigned to another logical address; if yes, corresponding to a physical address allocated for the second logical address Space is released.

It should be noted that the communication interface 901 can be the IP interface in FIG. 2A, and the processor 902 can be the storage processor in FIG. 2A; or the communication interface 901 can be the IP interface and the FC interface in FIG. 2B, and the processor 902 It can be the memory processor in Figure 2B.

The device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 3 and FIG. 4, and the implementation principle and the technical effect are similar, and details are not described herein again.

Embodiment 5 of device for converging SAN and NAS storage architecture in storage system of the present invention

The structure of the apparatus of this embodiment is the same as that shown in FIG. 9, and also includes a communication interface and a processor. The communication interface is connected to the network through a physical connection manner of the SAN and a physical connection manner of the NAS, and is configured to receive a data write request, where the data write request includes a to-be-written data and a logical address corresponding to the to-be-written data. a processor, configured to determine whether the data write request is sent by a network host connected by a physical connection manner of the SAN or by a network host connected by using a physical connection manner of the NAS; if the data write request is adopted by When the network host connected to the physical connection mode of the SAN is sent, the physical address corresponding to the logical address is determined according to the correspondence between the logical address and the physical address, and the physical address corresponding to the logical address is used. Wait Write data for storage; if the data write request is sent by a network host connected by a physical connection mode of the NAS, assign a corresponding physical address to the logical address, and according to the physical address allocated for the logical address And storing the data to be written.

Optionally, the processor is further configured to: determine whether a physical address allocated to the logical address is allocated to another logical address; if yes, release a space corresponding to the physical address allocated for the logical address.

One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above may be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A method for converging a storage area network SAN and a network attached storage NAS storage architecture in a storage system, the storage system is configured to provide a service to a network host, and the method includes:

Receiving a first data write request sent by a network host connected by a physical connection manner of the SAN; the first data write request includes a first to-be-written data and a first logical address corresponding to the first to-be-written data;

Determining, according to the correspondence between the first logical address and the physical address, a physical address corresponding to the first logical address;

And storing the first to-be-written data according to the physical address corresponding to the first logical address.
The method according to claim 1, wherein the method further comprises:

Receiving a second data write request sent by the network host connected by the physical connection mode of the NAS; the second data write request includes the second to-be-written data and the second logical address corresponding to the second to-be-written data;

Allocating a corresponding physical address to the second logical address;

The second to-be-written data is stored according to a physical address allocated for the second logical address.
The method according to claim 2, wherein the storing the second to-be-written data according to the physical address assigned to the second logical address further comprises:

Determining whether a physical address assigned to the second logical address is assigned to another logical address;

If yes, after the space corresponding to the physical address allocated for the second logical address is released, the second to-be-written data is stored according to the physical address allocated for the second logical address. step;

Otherwise, directly executing the physical address according to the second logical address, The second step of writing data to be stored is described.
A method for converging a storage area network SAN and a network attached storage NAS storage architecture in a storage system, the storage system is configured to provide a service to a network host, and the method includes:

Receiving a data write request, where the data write request includes a data to be written and a logical address corresponding to the data to be written;

Determining whether the data write request is sent by a network host connected by a physical connection manner of the SAN or by a network host connected by using a physical connection manner of the NAS;

If the data write request is sent by a network host connected by a physical connection mode of the SAN, determining a physical address corresponding to the logical address according to the correspondence between the logical address and the physical address, and according to the logic a physical address corresponding to the address, and storing the data to be written;

If the data write request is sent by a network host connected by using a physical connection mode of the NAS, assign a corresponding physical address to the logical address, and write the to-be-written according to the physical address assigned to the logical address. Into the data for storage.
The method according to claim 4, wherein the storing the data to be written according to the physical address assigned to the logical address further comprises:

Determining whether a physical address assigned to the logical address is assigned to another logical address;

If yes, after the space corresponding to the physical address allocated to the logical address is released, the step of storing the data to be written according to the physical address allocated for the logical address is performed;

Otherwise, the step of storing the data to be written according to the physical address assigned to the logical address is directly performed.
An apparatus for converging a storage area network SAN and a network attached storage NAS storage architecture in a storage system, the storage system is configured to provide a service to a network host, and the device includes:

A SAN module for receiving network hosts connected by a physical connection of a SAN Sending a first data write request; the first data write request includes a first to-be-written data and a first logical address corresponding to the first to-be-written data;

The copy-on-write COW module is configured to determine a physical address corresponding to the first logical address according to the correspondence between the first logical address and the physical address;

And a writing module, configured to store the first to-be-written data according to a physical address corresponding to the first logical address.
The device according to claim 6, wherein the device further comprises:

a NAS module, configured to receive a second data write request sent by a network host connected by a physical connection manner of the NAS; the second data write request includes a second to-be-written data and a second corresponding to the second to-be-written data Two logical addresses;

Redirecting a write ROW module, configured to allocate a corresponding physical address to the second logical address;

The writing module is further configured to store the second to-be-written data according to a physical address allocated for the second logical address.
The device according to claim 7, wherein the ROW module is further configured to:

Determining whether a physical address assigned to the second logical address is assigned to another logical address;

If yes, the space corresponding to the physical address allocated for the second logical address is released.
An apparatus for converging a storage area network SAN and a network attached storage NAS storage architecture in a storage system, the storage system is configured to provide a service to a network host, and the device includes:

a receiving module, configured to receive a data write request, where the data write request includes a data to be written and a logical address corresponding to the data to be written;

a processing module, configured to determine whether the data write request is sent by a network host connected by a physical connection manner of the SAN or by a network host connected by using a physical connection manner of the NAS; if the data write request is by using a SAN When the network host connected to the physical connection is sent, according to the correspondence between the logical address and the physical address Determining, by the physical address corresponding to the logical address, the data to be written according to the physical address corresponding to the logical address; if the data write request is connected by using a physical connection manner of the NAS When the network host sends, the logical address is assigned a corresponding physical address, and the data to be written is stored according to the physical address allocated for the logical address.
The device according to claim 9, wherein the processing module is further configured to:

Determining whether a physical address assigned to the logical address is assigned to another logical address;

If so, the space corresponding to the physical address assigned to the logical address is released.
An apparatus for converging a storage area network SAN and a network attached storage NAS storage architecture in a storage system, the storage system is configured to provide a service to a network host, and the device includes:

a communication interface, configured to receive a first data write request sent by a network host connected by a physical connection manner of the SAN; the first data write request includes a first to-be-written data and a first corresponding to the first to-be-written data a logical address;

a processor, configured to determine, according to the correspondence between the first logical address and the physical address, a physical address corresponding to the first logical address, and according to the physical address corresponding to the first logical address, to the first The data to be written is stored.
The device according to claim 11, wherein the communication interface is further configured to:

Receiving a second data write request sent by the network host connected by the physical connection mode of the NAS; the second data write request includes the second to-be-written data and the second logical address corresponding to the second to-be-written data;

The processor is further configured to:

Allocating a corresponding physical address for the second logical address, and storing the second to-be-written data according to the physical address allocated for the second logical address.
The device according to claim 12, wherein said processor further Used for:

Determining whether a physical address assigned to the second logical address is assigned to another logical address;

If yes, the space corresponding to the physical address allocated for the second logical address is released.
An apparatus for converging a storage area network SAN and a network attached storage NAS storage architecture in a storage system, the storage system is configured to provide a service to a network host, and the device includes:

The communication interface is connected to the network through a physical connection manner of the SAN and a physical connection manner of the NAS, and is configured to receive a data write request, where the data write request includes a to-be-written data and a logical address corresponding to the to-be-written data; And determining whether the data write request is sent by a network host connected by a physical connection manner of the SAN or by a network host connected by using a physical connection manner of the NAS; if the data write request is by using a SAN When the network host connected to the physical connection is sent, the physical address corresponding to the logical address is determined according to the correspondence between the logical address and the physical address, and the to-be-written is performed according to the physical address corresponding to the logical address. Entering data for storage; if the data write request is sent by a network host connected by a physical connection mode of the NAS, assigning a corresponding physical address to the logical address, and according to the physical address allocated for the logical address, The data to be written is stored.
The device according to claim 14, wherein the processor is further configured to:

Determining whether a physical address assigned to the logical address is assigned to another logical address;

If so, the space corresponding to the physical address assigned to the logical address is released.