CN107222363A - One kind storage protocol conformance test method and system - Google Patents

Abstract

The invention provides a method for testing the consistency of the storage protocol. When the consistency of the storage protocol needs to be tested, the protocol model is first constructed based on the general protocol packet structure layer, then the protocol model is converted into a specific protocol, and then the storage protocol is tested. Consistency is tested, and the present invention converts the protocol model into a specific protocol by constructing a protocol model, which can effectively improve the test efficiency of storage protocol consistency.

Description

Method and system for testing storage protocol consistency

technical field

The present invention relates to the technical field of storage systems, and more specifically, to a storage protocol consistency testing method and system.

Background technique

There are many storage protocols, such as interface layer protocols SATA (Serial Advanced Technology Attachment, Serial Advanced Technology Attachment), SCSI (Small Computer System Interface, small computer system interface), SAS (Statistical Analysis System, system analysis software), etc., management Such protocols include SNMP (Simple Network Management Protocol, Simple Network Management Protocol), SMI-S (Storage Management Initiative specification, cutting-edge storage management interface standard), RestAPI (Representational State Transfer Application Programming Interface, representational state transfer application programming interface), File sharing protocols include NFS (Network File System, network file system), CIFS (Common Internet File System, common network file system), FTP (File Transfer Protocol, file transfer protocol) and the like. Although the protocol definitions are different, similar protocols have great similarity in core semantics, such as SMI-S and RestAPI. From the perspective of testing, there are two major difficulties. One is to test the support of different manufacturers for the same protocol; the other is to write independent test cases for similar protocols, which requires a lot of work and many repetitive actions during test execution. Therefore, how to improve the test efficiency of storage protocol consistency is an urgent problem to be solved.

Contents of the invention

In view of this, the object of the present invention is to provide a storage protocol conformance testing method, which can effectively improve the testing efficiency of storage protocol conformance.

To achieve the above object, the present invention provides the following technical solutions:

A storage protocol conformance testing method, comprising:

Build a protocol model based on the general protocol packet structure layer;

Converting the protocol model into a specific protocol;

Test the conformance of the storage protocol.

Preferably, the construction of the protocol model based on the general protocol packet structure layer includes:

Initializing the protocol model;

Structurally defining the protocol model;

Define the frame format of the protocol model.

Preferably, the initialization of the protocol model is specifically:

Before the test case is executed, complete the authentication, handshake and data initialization with the device.

Preferably, the structural definition of the protocol model is specifically:

Define the layered protocol and protocol message format.

Preferably, the definition of the frame format of the protocol model is specifically:

Encapsulate the structured definition content in the protocol model into a format transmitted on the hardware platform to complete the verification of the protocol content.

A storage protocol conformance testing system, comprising:

A building block for building a protocol model based on a general protocol packet structure layer;

A conversion module, configured to convert the protocol model into a specific protocol;

The test module is used to test the consistency of the storage protocol.

Preferably, the building blocks include:

an initialization unit, configured to initialize the protocol model;

a structural definition unit, configured to structurally define the protocol model;

The frame format definition unit is configured to define the frame format of the protocol model.

Preferably, the initialization unit is specifically configured to: complete authentication with the device, handshake and data initialization before the test case is executed.

Preferably, the structural definition unit is specifically used for: defining protocol layers and protocol message formats.

Preferably, the frame format definition unit is specifically configured to: encapsulate the structured definition content in the protocol model into a format transmitted on the hardware platform, and complete the verification of the protocol content.

It can be seen from the above technical solution that the present invention provides a storage protocol consistency test method. When the consistency of the storage protocol needs to be tested, the protocol model is first constructed based on the general protocol packet structure layer, and then the protocol model is converted into a specific protocol, and then To test the consistency of the storage protocol, the present invention can effectively improve the test efficiency of the storage protocol consistency by constructing the protocol model and transforming the protocol model into a specific protocol.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the method flowchart of embodiment 1 of a kind of storage protocol conformance testing method disclosed by the present invention;

Fig. 2 is a method flow chart of embodiment 2 of a storage protocol consistency testing method method disclosed by the present invention;

Fig. 3 is a schematic structural diagram of Embodiment 1 of a storage protocol conformance testing system disclosed by the present invention;

Fig. 4 is a schematic structural diagram of Embodiment 2 of a storage protocol conformance testing system disclosed in the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

To more particularly emphasize implementation independence, the description refers to a number of modules or units. For example, a module or unit may be implemented by a hardware circuit comprising purpose-built VLSI circuits or gate arrays such as logic chips, transistors, or other components. Modules or units may also be implemented in programmable hardware devices, such as Field Effect Programmable Gate Arrays, Programmable Array Logic, Programmable Logic Devices, and the like.

Modules or units may also be implemented in software executed by various forms of processors. For example, a module of executable code may comprise one or more physical or logical blocks of computer instructions which may be formed, for example, as objects, procedures, or functions. However, the executable parts of an authentication module or unit need not be physically located together, but may consist of different instructions stored in different locations which, when logically grouped together, form the module or unit and achieve the requirements of that module or unit. the goal of.

Indeed, a module or unit of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, in different programs, and across several memory devices. Likewise, operational data may be identified and displayed within this module or unit, and may be implemented in any suitable form and organized within any suitable data structure form. Operational data may be aggregated into a single data set, or may be distributed in different locations with different storage devices, and exist at least in part only in the form of electronic signals in a system or network.

The "embodiment" or similar terms mentioned in this specification indicate that the characteristics, structures or characteristics related to the embodiment are included in at least one embodiment of the present invention. Thus, appearances of the terms "in one embodiment," "in an embodiment," and similar terms throughout this specification may, but do not necessarily, all refer to the same embodiment.

Furthermore, the described properties, structures or characteristics of the invention may be combined in any manner in one or more embodiments. The following description will provide many specific details, such as examples of programming, software modules, user selections, network transactions, database queries, database structures, hardware modules, hardware circuits, hardware chips, etc., to provide an understanding of the embodiments of the present invention. One of ordinary skill in the relevant art will recognize, however, that the invention may be practiced without one or more of these specific details, or with other methods, components, materials, and the like. In other instances, well-known structures, materials or operations are not described in detail to avoid obscuring the invention.

As shown in Figure 1, it is a flow chart of a kind of storage protocol conformance testing method embodiment 1 disclosed by the present invention, and the method comprises the following steps:

S101. Construct a protocol model based on the general protocol packet structure layer;

S102. Transform the protocol model into a specific protocol;

S103. Test the consistency of the storage protocol.

The general protocol stack structure includes: hardware interface, protocol coding rules, protocol packet format definition, protocol semantics, protocol internal layered structure, protocol state machine and behavior. Among them, hardware interface: deal with the relevant content of the hardware interface, for the network port, this is the transport layer; protocol encoding rules: generally text or binary encoding format, here only deal with the basic encoding format, such as bencode encoding, base64 encoding etc., has nothing to do with the specific protocol; protocol packet format definition: the protocol packet format definition based on a specific encoding rule, after software decoding, generally forms a protocol format tree, which exists in the memory. This protocol tree is very important for protocol processing and protocol similarity determination. Protocol semantics: protocol specifications, the specific meaning of each field; protocol internal layered structure: some protocols are also layered internally, such as transport layer, session layer, transaction layer, etc.; protocol state machine and behavior: protocol state machine is any protocol Both have, the protocol behavior is mainly the high-level interaction of the protocol, and it is also an indispensable part of the protocol.

When the consistency test of the storage protocol is required, the similar model definition is carried out at the general protocol packet structure layer. A protocol packet is a tree in structure, and the detailed packet structure is standardized on this layer. Each new protocol The arrival of all needs to be adapted to the general protocol packet structure (mainly mapping protocol packets one by one). The specific method of mapping is the operation of the tree: adding new nodes, deleting nodes, and merging nodes. Among them, the addition of new nodes: mainly the expansion of protocol capabilities, or new functions brought about by protocol version upgrades. If the RestAPI protocol 1.1 adds a targetVolume field to the createSnapShot message compared to 1.0, a targetVolume field is added to the structure tree of the createSnapShot message.

Deletion of nodes: Some protocols discard certain fields when they are extended, and the operation of deleting nodes is reflected in the protocol packet structure tree.

Merging of nodes: some protocols will not change the structure of the original binary package when some fields are discarded. For example, in protocol 1.0, the length of field 1 is 4 bytes, and the length of field 2 is 2 bytes. In protocol 1.1, field 2 is deleted, but in order to ensure the compatibility of the protocol, the length of field 1 becomes 6 bytes. In this case we perform the merge operation of the nodes.

Then convert the similar protocol model into a specific protocol. Specifically, the adapter is used to complete the adaptation process. The adapter can be an independent node or a software module. After the protocol package is generated, it is modified according to the rules before sending, and finally sent to the tested storage device. This method is similar to the black-box testing method, which realizes the generation of new test cases by modifying the output results. If there is an inheritance relationship between the protocols, then there is an adapted protocol stack, which requires layer-by-layer adaptation from protocol 1 to protocol 1.1, and then to protocol 1.1.1.

To sum up, in the above embodiment, when the consistency of the storage protocol needs to be tested, the protocol model is first constructed based on the general protocol packet structure layer, and then the protocol model is converted into a specific protocol, and then the consistency of the storage protocol is tested. For testing, the present invention converts the protocol model into a specific protocol by constructing the protocol model, and can effectively improve the test efficiency of the consistency of the storage protocol.

As shown in Figure 2, it is a flow chart of a kind of storage protocol conformance testing method embodiment 2 disclosed by the present invention, and the method comprises the following steps:

S201. Initialize the protocol model;

S202. Structurally defining the protocol model;

S203. Define the frame format of the protocol model;

When it is necessary to conduct a consistency test on the storage protocol, the protocol model should be designed first. When designing the protocol model, it includes: model initialization, structural definition and frame format definition. Among them, protocol model initialization: before the test case is executed, complete basic work such as authentication with the device, handshake, data initialization, etc. The purpose is to make the device reach a stable state to ensure the stability of the protocol test state and protocol test results accuracy.

Structural definition: It is used to describe the generalized characteristics of the protocol and complete the abstract definition of similar protocols. The structural definition of the protocol model mainly includes: protocol layer definition and protocol message format definition.

Frame format definition: It is used to encapsulate the structured definition content in the protocol model into a format that can be transmitted on the hardware platform, and at the same time complete the verification of the protocol content.

S204. Transform the protocol model into a specific protocol;

The instantiation function of the protocol is responsible for converting the protocol model into a specific protocol. Specific functions include: protocol format reorganization and encoding. The protocol format reorganization function is responsible for deleting unsupported fields and adding fields that are not in the protocol model. The protocol encoding function is responsible for encoding the protocol packet into binary or text format according to the requirements of the specific protocol. Only the instantiated test protocol can run the test case.

S205. Test the consistency of the storage protocol.

The input of the system is a test case, and a test case is generally a test process, which should at least include a request, a response, and two messages. After system conversion, one test case can be automatically converted into two sets of test cases for storage protocol 1.0 and 1.1, which are used to test two sets of different test equipment. The process is as follows: (1) The input is a test case; (2) The system executes the test case, and finds the protocol package of the device under test from the test case, the initial minimum version is 1.0; (3) Using the instantiation method, the protocol Packets are converted into a protocol tree in memory; (4) decide whether to convert into protocol packets of version 1.1 or test 1.0 according to different target devices; (5) modify the steps ( 4) convert the protocol tree structure into protocol packet 1.1; (6) generate the packet structure of 1.1; (7) send the 1.1 packet or 1.0 packet to the correct storage device through the bottom interface (IP or FC).

To sum up, the present invention only needs to write a set of test suites for similar protocols or different versions of the same protocol, which realizes the high degree of reuse of test suites, saves labor costs, and realizes the automation of storage protocol testing.

As shown in Figure 3, it is a schematic structural diagram of Embodiment 1 of a storage protocol conformance testing system disclosed by the present invention. This system includes:

A construction module 301, configured to construct a protocol model based on a general protocol packet structure layer;

A conversion module 302, configured to convert the protocol model into a specific protocol;

The testing module 303 is configured to test the consistency of the storage protocol.

The general protocol stack structure includes: hardware interface, protocol coding rules, protocol packet format definition, protocol semantics, protocol internal layered structure, protocol state machine and behavior. Among them, hardware interface: deal with the relevant content of the hardware interface, for the network port, this is the transport layer; protocol encoding rules: generally text or binary encoding format, here only deal with the basic encoding format, such as bencode encoding, base64 encoding etc., has nothing to do with the specific protocol; protocol packet format definition: the protocol packet format definition based on a specific encoding rule, after software decoding, generally forms a protocol format tree, which exists in the memory. This protocol tree is very important for protocol processing and protocol similarity determination. Protocol semantics: protocol specifications, the specific meaning of each field; protocol internal layered structure: some protocols are also layered internally, such as transport layer, session layer, transaction layer, etc.; protocol state machine and behavior: protocol state machine is any protocol Both have, the protocol behavior is mainly the high-level interaction of the protocol, and it is also an indispensable part of the protocol.

When the consistency test of the storage protocol is required, the similar model definition is carried out at the general protocol packet structure layer. A protocol packet is a tree in structure, and the detailed packet structure is standardized on this layer. Each new protocol The arrival of all needs to be adapted to the general protocol packet structure (mainly mapping protocol packets one by one). The specific method of mapping is the operation of the tree: adding new nodes, deleting nodes, and merging nodes. Among them, the addition of new nodes: mainly the expansion of protocol capabilities, or new functions brought about by protocol version upgrades. If the RestAPI protocol 1.1 adds a targetVolume field to the createSnapShot message compared to 1.0, a targetVolume field is added to the structure tree of the createSnapShot message.

Deletion of nodes: Some protocols discard certain fields when they are extended, and the operation of deleting nodes is reflected in the protocol packet structure tree.

Merging of nodes: some protocols will not change the structure of the original binary package when some fields are discarded. For example, in protocol 1.0, the length of field 1 is 4 bytes, and the length of field 2 is 2 bytes. In protocol 1.1, field 2 is deleted, but in order to ensure the compatibility of the protocol, the length of field 1 becomes 6 bytes. In this case we perform the merge operation of the nodes.

Then convert the similar protocol model into a specific protocol. Specifically, the adapter is used to complete the adaptation process. The adapter can be an independent node or a software module. After the protocol package is generated, it is modified according to the rules before sending, and finally sent to the tested storage device. This method is similar to the black-box testing method, which realizes the generation of new test cases by modifying the output results. If there is an inheritance relationship between the protocols, then there is an adapted protocol stack, which requires layer-by-layer adaptation from protocol 1 to protocol 1.1, and then to protocol 1.1.1.

To sum up, in the above embodiment, when the consistency of the storage protocol needs to be tested, the protocol model is first constructed based on the general protocol packet structure layer, and then the protocol model is converted into a specific protocol, and then the consistency of the storage protocol is tested. For testing, the present invention converts the protocol model into a specific protocol by constructing the protocol model, and can effectively improve the test efficiency of the consistency of the storage protocol.

As shown in Figure 4, it is a schematic structural diagram of Embodiment 2 of a storage protocol conformance testing system disclosed by the present invention, and the system includes:

an initialization unit 401, configured to initialize the protocol model;

A structured definition unit 402, configured to define the protocol model in a structured manner;

A frame format definition unit 403, configured to define the frame format of the protocol model;

When it is necessary to conduct a consistency test on the storage protocol, the protocol model should be designed first. When designing the protocol model, it includes: model initialization, structural definition and frame format definition. Among them, protocol model initialization: before the test case is executed, complete basic work such as authentication with the device, handshake, data initialization, etc. The purpose is to make the device reach a stable state to ensure the stability of the protocol test state and protocol test results accuracy.

Structural definition: It is used to describe the generalized characteristics of the protocol and complete the abstract definition of similar protocols. The structural definition of the protocol model mainly includes: protocol layer definition and protocol message format definition.

Frame format definition: It is used to encapsulate the structured definition content in the protocol model into a format that can be transmitted on the hardware platform, and at the same time complete the verification of the protocol content.

A conversion module 404, configured to convert the protocol model into a specific protocol;

The instantiation function of the protocol is responsible for converting the protocol model into a specific protocol. Specific functions include: protocol format reorganization and encoding. The protocol format reorganization function is responsible for deleting unsupported fields and adding fields that are not in the protocol model. The protocol encoding function is responsible for encoding the protocol packet into binary or text format according to the requirements of the specific protocol. Only the instantiated test protocol can run the test case.

The testing module 405 is configured to test the consistency of the storage protocol.

The input of the system is a test case, and a test case is generally a test process, which should at least include a request, a response, and two messages. After system conversion, one test case can be automatically converted into two sets of test cases for storage protocol 1.0 and 1.1, which are used to test two sets of different test equipment. The process is as follows: (1) The input is a test case; (2) The system executes the test case, and finds the protocol package of the device under test from the test case, the initial minimum version is 1.0; (3) Using the instantiation method, the protocol Packets are converted into a protocol tree in memory; (4) decide whether to convert into protocol packets of version 1.1 or test 1.0 according to different target devices; (5) modify the steps ( 4) convert the protocol tree structure into protocol packet 1.1; (6) generate the packet structure of 1.1; (7) send the 1.1 packet or 1.0 packet to the correct storage device through the bottom interface (IP or FC).

To sum up, the present invention only needs to write a set of test suites for similar protocols or different versions of the same protocol, which realizes the high degree of reuse of test suites, saves labor costs, and realizes the automation of storage protocol testing.

Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A storage protocol conformance testing method, characterized in that, comprising: Build a protocol model based on the general protocol packet structure layer; Converting the protocol model into a specific protocol; Test the conformance of the storage protocol. 2. The method according to claim 1, characterized in that, said building a protocol model based on the general protocol packet structure layer comprises: Initializing the protocol model; Structurally defining the protocol model; Define the frame format of the protocol model. 3. The method according to claim 2, wherein the initialization of the protocol model is specifically: Before the test case is executed, complete the authentication, handshake and data initialization with the device. 4. The method according to claim 3, wherein the structural definition of the protocol model is specifically: Define the layered protocol and protocol message format. 5. The method according to claim 4, wherein the definition of the frame format of the protocol model is specifically: Encapsulate the structured definition content in the protocol model into a format transmitted on the hardware platform to complete the verification of the protocol content. 6. A storage protocol conformance testing system, comprising: A building block for building a protocol model based on a general protocol packet structure layer; A conversion module, configured to convert the protocol model into a specific protocol; The test module is used to test the consistency of the storage protocol. 7. The system according to claim 6, wherein the building blocks include: an initialization unit, configured to initialize the protocol model; a structural definition unit, configured to structurally define the protocol model; The frame format definition unit is configured to define the frame format of the protocol model. 8. The system according to claim 7, wherein the initialization unit is specifically configured to complete authentication with the device, handshake and data initialization before the test case is executed. 9 . The system according to claim 8 , wherein the structural definition unit is specifically configured to: define protocol layers and protocol message formats. 10. The system according to claim 9, wherein the frame format definition unit is specifically configured to: encapsulate the structured definition content in the protocol model into a format transmitted on the hardware platform, and complete the proofreading of the protocol content test.