WO2017045437A1

WO2017045437A1 - Block storage service method and apparatus

Info

Publication number: WO2017045437A1
Application number: PCT/CN2016/084322
Authority: WO
Inventors: 张恒生
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-09-17
Filing date: 2016-06-01
Publication date: 2017-03-23
Also published as: CN106549986A

Abstract

A block storage service method and apparatus. The method comprises: determining a first virtual machine (VM) on a first cloud system, and mounting a block device used for providing a block storage service in the first cloud system on the first VM; outputting the block device mounted on the first VM, to the Internet by using a block storage transmission protocol deployed on the first VM; and running a block storage transmission protocol deployed on a second VM, and mounting, after obtaining the block device mounted on the first VM from the Internet, the block device on the second VM.

Description

Block storage service method and device

Technical field

This document relates to, but is not limited to, the field of cloud computing technology, and more particularly to a block storage service method and apparatus.

Background technique

With the development of cloud computing technology, Infrastructure as a Service (IAAS) has gradually become an important way to provide cloud computing services to users. At present, cloud computing operators that can provide IAAS services at home and abroad are, for example, Amazon Web Services (AWS), domestic Alibaba Cloud, Shanda Cloud, etc., which provide cloud-based computing to users. Services typically include providing virtual machines, block storage services, and networks.

Among the cloud computing services provided by the current operators, the block storage service has the following two problems: First, the block device created by the block storage service provided by the operator, for example, a disk volume, at the same time It can only be mounted on a virtual machine (VM) in the cloud system. It cannot be mounted on multiple VMs at the same time. Secondly, the block storage service provided by the cloud vendor can only provide the block storage service for the VMs in the cloud system, that is, the block devices applied by the user in the cloud computing service provided by an operator can only be mounted to the same cloud system. On the VM inside, the block storage service is provided on the VM that cannot be mounted to other cloud systems.

In summary, in the cloud computing service provided by the related art, since the block storage service is limited to providing services to one VM in the same cloud system, the limitation of the block storage service mode is large, and it is not suitable for widespread use.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Embodiments of the present invention provide a block storage service method and apparatus, which are capable of mounting a block device for providing a block storage service on a plurality of VMs.

An embodiment of the present invention provides a block storage service method, including:

Determining the first virtual machine VM in the first cloud system, and using the first cloud system for providing the block storage a block device of the storage service is mounted on the first VM;

Outputting the block device mounted on the first VM to the Internet by using a block storage transfer protocol deployed on the first VM;

The block storage transport protocol deployed on the second VM is executed, and after the block device mounted on the first VM is obtained from the Internet, the block device is mounted on the second VM.

Optionally, the number of the second VMs is multiple, and the running a block storage transport protocol deployed on the second VM, after acquiring the block device mounted on the first VM from the Internet, The block device is mounted on the second VM, including:

Running the block storage transfer protocol deployed on each of the second VMs in sequence, and acquiring the block devices mounted on the first VM from the Internet, respectively, and mounting the block devices to each of the first On the second VM.

Optionally, the second VM is a VM in the first cloud system; or

The second VM is a VM in the second cloud system; or

A part of the VMs in the second VM is a VM in the first cloud system, and another part of the VMs in the second VM is a VM in the second cloud system.

Optionally, the determining, by the first cloud system, the first virtual machine VM includes:

Selecting an applied VM as the first VM in the first cloud system; or

Applying a VM as the first VM in the first cloud system.

Optionally, the block storage transport protocol comprises: a small computer system interface iSCSI protocol or a network device block NBD protocol.

An embodiment of the present invention provides a block storage service device, including:

a mounting module, configured to determine a first virtual machine VM in the first cloud system, and mount a block device in the first cloud system for providing a block storage service on the first VM;

An output module, configured to output, by using a block storage transfer protocol deployed on the first VM, a block device mounted on the first VM to the Internet;

The mounting module is further configured to run a block storage transfer protocol deployed on the second VM, and after the block device mounted on the first VM is obtained from the Internet, the block device is mounted to the On the second VM.

Optionally, the number of the second VMs is multiple, and the mounting module includes: a mounting unit configured to sequentially run a block storage transport protocol deployed on each of the second VMs, from the Internet. After acquiring the block devices mounted on the first VM, the block devices are respectively mounted on each of the second VMs.

Optionally, the second VM is a VM in the first cloud system; or

The second VM is a VM in the second cloud system; or

Optionally, the mounting module further includes at least one of a selecting unit and an application unit;

The selecting unit is configured to select an applied VM as the first VM in the first cloud system;

The application unit is configured to apply for one VM as the first VM in the first cloud system.

Optionally, the block storage transport protocol comprises: a small computer system interface iSCSI protocol or a network device block NBD protocol. .

The block storage service method and apparatus provided by the embodiment of the present invention, by determining the first VM in the first cloud system, and mounting the block device provided by the operator in the first cloud system to the first VM, thereby passing the The block storage transport protocol deployed on the first VM outputs the block device mounted on the first VM to the Internet, and then the block device mounted on the first VM by running the block storage transfer protocol deployed on the second VM Mounted on the second VM, the embodiment of the present invention converts the manner of mounting the block device in the related technology into the block storage transfer protocol by using the first VM, thereby implementing the mounting of the block device provided by the operator. The method provided by the embodiment of the present invention solves the limitation of the block storage service mode in the cloud computing service provided by the prior art, because the block storage service is limited to providing services to one VM in the same cloud system. Larger, not suitable for widespread use.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

FIG. 1 is a flowchart of a block storage service method according to an embodiment of the present invention;

2 is a schematic diagram of an application scenario of a block storage service method provided by the embodiment shown in FIG. 1;

FIG. 3 is a schematic diagram of another application scenario of the block storage service method provided by the embodiment shown in FIG. 1;

4 is a flowchart of another method for storing a block storage service according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an application scenario of a block storage service method provided by the embodiment shown in FIG. 4;

FIG. 6 is a schematic structural diagram of a block storage service device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another block storage service device according to an embodiment of the present invention.

Embodiments of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The steps illustrated in the flowchart of the figures may be executed in a computer system such as a set of computer executable instructions. Also, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

The technical solution of the present invention is described in detail below by using a specific embodiment. The first cloud system in the following multiple embodiments may be a public cloud or a private cloud, and the second cloud system may also be a public cloud or a private cloud. The first VM and the second VM are both cloud hosts in the cloud system. The following specific embodiments of the present invention may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

FIG. 1 is a flowchart of a method for storing a block storage service according to an embodiment of the present invention. The block storage service method provided in this embodiment is applicable to a case where a block storage service is provided in a cloud system, and the method may be implemented by a block storage service device, where the block storage service device is implemented by a combination of hardware and software, and the device may be implemented by Integrated in the processor of the terminal device for use by the processor. As shown in FIG. 1, the method in this embodiment may include:

S110. Determine a first VM in the first cloud system, and mount a block device in the first cloud system for providing a block storage service on the first VM.

FIG. 2 is a schematic diagram of an application scenario of the block storage service method provided in the embodiment shown in FIG. In this embodiment, the first cloud system is a cloud system that provides a block storage service. In this embodiment, the first cloud system is used as a public cloud AWS as an example, and the AWS elastic computing cloud (Elastic Compute Cloud, referred to as : EC2) Applying a VM, as the first VM, may also select an applied VM from the first cloud system as the first VM. The first VM determined in this embodiment is responsible for mounting the block device created by the block storage service provided by the operator, specifically the disk volume in FIG. 2.

Optionally, before the method of mounting the block device on the first VM, the method provided by the embodiment further includes: creating, in the first cloud system, a block device for providing a block storage service.

Optionally, the block device is created by using AWS Elastic Block Store (EBS). The first cloud system in this embodiment provides a single block device. The disk volume in FIG. 2 is a block device created in the first cloud system. After determining the first VM and creating the block device, the block device can be mounted on the first VM. The embodiment does not limit the execution of determining the first VM in the first cloud system, and the sequence of executing the block device for providing the block storage service in the first cloud system, as long as it is executed before the block device is mounted. can.

It should be noted that the manner in which the block device is mounted on the first VM is the same as the method of mounting the block device in the related art, and is all mounted by an attach process. It should be noted that the technology of the attach process is described. The protocol used in the implementation is a black box, that is, a specific protocol used for the user not to publicly mount; however, the role of the first VM in the first cloud system in this embodiment is different from the related technology, and related technologies will After the block device is mounted on the first VM, the block device can be mounted on the other VMs. In this embodiment, the device provided by the operator is mounted on multiple VMs in the following manner.

S120. Output, by using a block storage transport protocol deployed on the first VM, the block device mounted on the first VM to the Internet.

In this embodiment, after the block device provided by the operator is mounted on the first VM, the block device name is generated in the first VM, and the name of the block device can be expressed as /dev/sdb, /dev/sdc, for example. And /dev/sdd, etc., all the embodiments of the present invention and all application scenarios are shown by the name of the block device as /dev/sdb, and the block name is used to refer to the block mounted on the first VM. device. In addition, this embodiment may be implemented by deploying a block storage transfer protocol on the first VM. A block device mounted on a VM is output to the Internet for external service. Specifically, the block storage transfer protocol in this embodiment may be a small computer system interface (i.e., iSCSI) protocol, or may be a network block device (NBD) protocol; In this embodiment, the iSCSI protocol is taken as an example to illustrate that the block device mounted on the first VM is output to the Internet through an iSCSI server (iSCSI target), and the block device transmitted to the Internet can provide external services, that is, the first The block device on the VM is exposed to the Internet, that is, the first VM is the server of the block storage service. In this embodiment, the block device outputted to the Internet through the iSCSI target may be referred to as a target, and /dev/sdb is a target. one of the.

The iSCSI server includes a server of a SCSI protocol installed on the first VM.

S130. Run the block storage transport protocol deployed on the second VM, and obtain the block device mounted on the first VM from the Internet, and then mount the block device to the second VM.

In this embodiment, not only the device-provided block device can be mounted on the first VM, but also the iSCSI client (iSCSI initiator) deployed on the second VM can be used to obtain the above-mentioned transmission to the Internet. The block device (target), and the obtained block device is mounted on the second VM, that is, the requirement to mount the block device (volume) provided by the operator on the second VM is completed. The second VM is the client of the block storage service.

It should be noted that the number of the second VMs in this embodiment may be multiple. According to the relationship between the first VM and the second VM in the cloud system in this embodiment, the first VM is provided as a server. Block storage service, and converts the block device to the block device through the block storage transfer protocol by attaching the block device in the related art, and when the block device is exposed to the Internet by the block storage transfer protocol, The number of VMs that the block device can be mounted is not limited, that is, the block device provided by the operator is mounted on multiple VMs.

It should also be noted that if real-time application clusters (Oracle Real Application Clusters, Oracle RAC) need to be deployed on the cloud system, the block devices provided by the operators need to be shared among multiple VMs. However, the related technologies provide The method of the block storage service provided by the present embodiment can be implemented in the manner that the block device provided by the operator can be mounted on only one VM in the cloud system at the same time. Originally limited to block devices can only serve one VM in the cloud system, extended to be able to mount block devices concurrently to multiple On the VM, applications that share block devices can be provided for Oracle RAC and similar requirements to Oracle RAC. In addition, the terminal device that performs the block storage service method provided by each embodiment of the present invention may be a client that has the right to manage the cloud system by logging in to the cloud account in the first cloud system to execute each Item operation.

The block storage service method provided by the embodiment, by determining the first VM in the first cloud system, and mounting the block device provided by the operator to the first VM, thereby passing the block deployed on the first VM The storage transfer protocol outputs the block device mounted on the first VM to the Internet, and then mounts the block device mounted on the first VM to the second VM by running a block storage transfer protocol deployed on the second VM. In this embodiment, the manner in which the block device is mounted in the related art is converted to the block storage transfer protocol by using the first VM, thereby implementing the requirement that the block device provided by the operator is mounted on multiple VMs; The method provided by the example implements mounting a block device for providing a block storage service on a plurality of VMs.

Optionally, the second VM in the foregoing embodiment of the present invention may be a VM in the first cloud system, and the second VM in the application scenario shown in FIG. 2 is in the same cloud system as the first VM, in the application scenario. The block device in the same cloud system is mounted on multiple VMs. In addition, the second VM may also be a VM in the second cloud system. As shown in FIG. 3, the block provided in the embodiment shown in FIG. A schematic diagram of another application scenario of the storage service method, in which the block device of the first cloud system is mounted on the VM outside the first cloud system, and when the block device resources in the second cloud system are tight The block storage service can be provided by the device in the first cloud system. The specific implementation is the same as that in the foregoing embodiment, and therefore is not described here.

It should be noted that, by applying the method provided in this embodiment to the application scenario shown in FIG. 3, the service for the VM to be mounted on the VM of the first cloud system may be limited to being provided by the VM in the first cloud system. The block storage service is extended to provide a block storage service for the VM outside the first cloud system, that is, the range in which the block storage service in the original first cloud system can provide services is extended, and the user purchases the cloud computing computing service in one operator. After that, the requirements of any use can be increased, and the compatibility of the block storage service is correspondingly improved. In the cloud computing service provided by the related technology, the block storage service provided by the first cloud system can only provide the block storage service for the VMs in the first cloud system, and cannot provide the blocks for the VMs in the second cloud system across the cloud. Storage service limitations.

Optionally, FIG. 4 is a flowchart of another method for storing a block storage service according to an embodiment of the present invention. In this embodiment, the number of the second VMs is multiple, and the S130 in the foregoing embodiment may be replaced by: sequentially running the block storage transport protocol deployed on each second VM, and acquiring the first VM from the Internet. After the block device, the block device is separately mounted to each of the second VMs. The manner of mounting a plurality of second VMs in this embodiment is similar to the manner in which a second VM is mounted in the foregoing embodiment. For example, the mounting may be performed by using an iSCSI client deployed on the second VM.

In a specific implementation, the application scenario shown in FIG. 2 and FIG. 3 can also be applied, that is, multiple second VMs exist in both FIG. 2 and FIG. 3. In addition, FIG. 5 is a schematic diagram of an application scenario of the block storage service method provided by the embodiment shown in FIG. 4, in which a plurality of second VMs of a block device provided by the first VM are mounted, which may be partially The second VM is in the first cloud system, and the other second VM is in the second cloud system.

It should be noted that, in the above-mentioned block storage service method provided by the present invention, in a specific implementation of the application scenario shown in FIG. 3, a public storage cloud may be used to provide a block storage service for another public cloud, where the first cloud system is, for example, public. Cloud AWS, the second cloud system is, for example, the public cloud Alibaba Cloud, which provides AWS for Alibaba Cloud to provide block storage services; in addition, the application scenario shown in Figure 3 can also provide a block storage service for a private cloud for a private cloud. A cloud system can also be a public cloud AWS. This scenario is typically used in a hybrid cloud scenario to achieve unified management of block storage services in a hybrid cloud. For example, if the resources of the private cloud storage service are insufficient, if private When the VM on the cloud needs additional block storage services, the hybrid cloud dispatch center needs to apply for the block storage service resources on the public cloud for the VMs in the private cloud to be mounted.

Each of the foregoing embodiments is specifically implemented by using the first cloud system as an AWS. Similarly, the first cloud system in each embodiment of the present invention may also be Alibaba Cloud, that is, the Alibaba Cloud block storage service may be implemented. The created block device is concurrently mounted on multiple VMs of Alibaba Cloud or mounted on multiple VMs of other cloud systems.

Similarly, with the block storage service method provided by the present invention, any combination of block storage services between the public cloud or the private cloud can be implemented, for example, including: a public cloud service through a block storage service of the public cloud, through a public cloud The block storage service is the same as the above embodiment in the case of another private cloud service, the block storage service of the private cloud to another public cloud service, and the block storage service of the private cloud to the other private cloud service. I will not repeat them here.

Embodiments of the present invention also provide a computer readable storage medium storing a computer executable The instructions, computer executable instructions, are used to perform any of the methods described above.

FIG. 6 is a schematic structural diagram of a block storage service device according to an embodiment of the present invention. The block storage service device provided in this embodiment is applicable to a case where a block storage service is provided in a cloud system, and the block storage service device is implemented by a combination of hardware and software, and the device may be integrated in a processor of the terminal device for The processor calls are used. As shown in FIG. 6, the block storage service device of this embodiment specifically includes: a mounting module 11 and an output module 12.

The mounting module 11 is configured to determine the first virtual machine VM in the first cloud system, and mount the block device in the first cloud system for providing the block storage service on the first VM.

This embodiment is also applicable to the application scenario shown in FIG. 2, and the device provided in this embodiment may be used in the first cloud system before the mounting module 11 mounts the block device on the first VM. A block device that provides a block storage service, that is, a disk volume in FIG.

The output module 12 is configured to output the block device mounted on the first VM to the Internet through a block storage transfer protocol deployed on the first VM.

It should be noted that the block storage transport protocol in this embodiment may also be an iSCSI protocol, or may be an NBD protocol, and the iSCSI protocol is taken as an example. The device that is output to the internet through the iSCSI target may be referred to as a target, Dev/sdb is one of the targets.

The mounting module 11 is further configured to run a block storage transfer protocol deployed on the second VM, and after the block device mounted on the first VM is obtained from the Internet, the block device is mounted on the second VM.

It should be noted that the number of the second VMs in this embodiment may be multiple. According to the relationship between the first VM and the second VM in the cloud system in this embodiment, the present embodiment uses block storage transmission. When the protocol mounts the block device exposed to the Internet, it does not limit the number of VMs that the block device can mount, that is, the requirement to mount the block device provided by the operator on multiple VMs. . In addition, the effect of the plurality of VMs in the cloud system being installed by the operator-provided block device in the manner provided by the embodiment can be applied to the application scenario of deploying the Oracle RAC to the cloud system.

It should be noted that the terminal device to which the block storage service device is provided in each embodiment of the present invention may be a client, and the client has the right to manage the cloud system by logging in to the cloud account in the first cloud system. To perform various operations.

The block storage service device provided by the embodiment of the present invention is used to execute the block storage service method provided by the embodiment shown in FIG. 1 of the present invention, and has a corresponding function module, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

Optionally, the second VM in the foregoing embodiment of the present invention may be a VM in the first cloud system, and the second VM in the application scenario shown in FIG. 2 is in the same cloud system as the first VM, in the application scenario. The mounting of the block device in the same cloud system is implemented. In addition, the second VM can also be a VM in the second cloud system. The block storage service device provided by the present invention can also be applied to the foregoing three application scenarios. The module device of the first cloud system is mounted on the VM outside the first cloud system.

Optionally, FIG. 7 is a schematic structural diagram of another block storage service device according to an embodiment of the present invention. On the basis of the foregoing embodiment shown in FIG. 6, the mounting module 11 in this embodiment may include at least one of the selecting unit 13 and the application unit 14, and the selecting unit 13 is configured to select one of the first cloud systems. The VM is used as the first VM; the application unit 14 is configured to apply a VM as the first VM in the first cloud system; the embodiment shown in FIG. 7 shows the mounting module 11 including the selecting unit 13 and the application unit 14 as an example. .

On the basis of the embodiment shown in FIG. 7, the number of the second VMs in this embodiment may be multiple, and the mounting module 11 in this embodiment may further include a mounting unit 15 configured to sequentially run each The block storage transport protocol deployed on the second VM acquires the block device mounted on the first VM from the Internet, and then mounts the block device to each second VM. In this embodiment, the second VM may be a VM in the first cloud system, and may also be a VM in the second cloud system. In another implementation manner, as shown in FIG. 5, a part of the VMs in the second VM are The VM in the first cloud system, and another part of the VM in the second VM is a VM in the second cloud system.

The block storage service device provided by the embodiment of the present invention is used to execute the block storage service method provided by the embodiment shown in FIG. 4 of the present invention, and has a corresponding function module, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

One of ordinary skill in the art will appreciate that all or part of the steps in the above methods may be performed by a program to instruct related hardware, such as a processor, which may be stored in computer readable storage. In media, such as read-only memory, disk or optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program in a storage and a memory by a processor. / instruction to achieve its corresponding function. The invention is not limited to any specific form of combination of hardware and software.

While the embodiments of the present invention have been described above, the described embodiments are merely for the purpose of understanding the invention and are not intended to limit the invention. Any modification and variation in the form and details of the embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. The scope defined by the appended claims shall prevail.

Industrial applicability

The above technical solution implements mounting a block device for providing a block storage service on a plurality of VMs.

Claims

A block storage service method, comprising:

Determining, in the first cloud system, the first virtual machine VM, and mounting the block device in the first cloud system for providing the block storage service on the first VM;

Outputting the block device mounted on the first VM to the Internet by using a block storage transfer protocol deployed on the first VM;

The block storage transport protocol deployed on the second VM is executed, and after the block device mounted on the first VM is obtained from the Internet, the block device is mounted on the second VM.
The block storage service method according to claim 1, wherein the number of the second VMs is plural, the running a block storage transport protocol deployed on the second VM, acquiring the first VM from the Internet After the block device is mounted, the block device is mounted on the second VM, including:

Running the block storage transfer protocol deployed on each of the second VMs in sequence, and acquiring the block devices mounted on the first VM from the Internet, respectively, and mounting the block devices to each of the first On the second VM.
The block storage service method according to claim 1, wherein the second VM is a VM in the first cloud system; or

The second VM is a VM in the second cloud system; or

A part of the VMs in the second VM is a VM in the first cloud system, and another part of the VMs in the second VM is a VM in the second cloud system.
The block storage service method according to any one of claims 1 to 3, wherein the determining the first virtual machine VM in the first cloud system comprises:

Selecting an applied VM as the first VM in the first cloud system; or

Applying a VM as the first VM in the first cloud system.
The block storage service method according to any one of claims 1 to 3, wherein the block storage transfer protocol comprises: a small computer system interface iSCSI protocol or a network device block NBD protocol.
A block storage service device comprising:

a mounting module, configured to determine a first virtual machine VM in the first cloud system, and mount a block device in the first cloud system for providing a block storage service on the first VM;

An output module, configured to output, by using a block storage transfer protocol deployed on the first VM, a block device mounted on the first VM to the Internet;

The mounting module is further configured to run a block storage transfer protocol deployed on the second VM, and after the block device mounted on the first VM is obtained from the Internet, the block device is mounted to the On the second VM.
The block storage service device according to claim 6, wherein the number of the second VMs is plural, and the mounting module comprises: a mounting unit configured to sequentially run the deployment on each of the second VMs. a block storage transfer protocol, after acquiring the block device mounted on the first VM from the Internet, respectively mounting the block device to each of the second VMs.
The block storage service device of claim 7, wherein the second VM is a VM in the first cloud system; or

The second VM is a VM in the second cloud system; or

A part of the VMs in the second VM is a VM in the first cloud system, and another part of the VMs in the second VM is a VM in the second cloud system.
The block storage service device according to any one of claims 7 or 8, wherein the mounting module further comprises at least one of a selection unit and an application unit;

The selecting unit is configured to select an applied VM as the first VM in the first cloud system;

The application unit is configured to apply for one VM as the first VM in the first cloud system.
The block storage service device according to any one of claims 6 to 8, wherein the block storage transfer protocol comprises: a small computer system interface iSCSI protocol or a network device block NBD protocol.