CN110019041A - NFS server-side catalogue read method, device, equipment and storage medium - Google Patents

NFS server-side catalogue read method, device, equipment and storage medium Download PDF

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Publication number
CN110019041A
CN110019041A CN201910294517.9A CN201910294517A CN110019041A CN 110019041 A CN110019041 A CN 110019041A CN 201910294517 A CN201910294517 A CN 201910294517A CN 110019041 A CN110019041 A CN 110019041A
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CN
China
Prior art keywords
catalogue
file
read
information
side
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CN201910294517.9A
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Chinese (zh)
Inventor
李进文
张帅
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苏州浪潮智能科技有限公司
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Priority to CN201910294517.9A priority Critical patent/CN110019041A/en
Publication of CN110019041A publication Critical patent/CN110019041A/en

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Abstract

The invention discloses a kind of NFS server-side catalogue read methods, are related to technical field of memory, comprising: when NFS server-side receives catalogue read requests, call catalogue to read interface and read file in catalogue;The information that file in catalogue is extracted according to presupposed information extracting rule, obtains the file information;Information filling is made requests according to the file information, obtains response request;Response request is back to catalogue read requests end.This method avoid, to the process that each file is cached in catalogue, greatly promote request average response speed in request response for the first time, promote user experience;The case where information malfunctions under multi-client scene caused by updating not in time due to cache information is also avoided simultaneously.The present invention also provides a kind of NFS server-side catalogue reading device, equipment and readable storage medium storing program for executing, have above-mentioned beneficial effect.

Description

NFS server-side catalogue read method, device, equipment and storage medium

Technical field

The present invention relates to technical field of memory, in particular to a kind of NFS server-side catalogue read method, device, equipment and Readable storage medium storing program for executing.

Background technique

NFS (Network File System) i.e. Network File System is one in the file system of FreeBSD support Kind, it allows to pass through TCP/IP network shared resource between the computer in network.The excellent stability of NFS network and expansible Property to be widely used in each business scenario of field of distributed storage, storage service cluster by NFS service to All users provide data service.

With the diversification of file in NFS, there are some problems in big directory access for NFS service, such as due in catalogue Quantity of documents is excessive, and when user needs to check the content of some catalogue, ls (list lists the content of catalogue) process consumes for the first time When it is too long, million grades of catalogue can be more than ten minutes or more, directly affect customer service;Meanwhile if multi-client accesses simultaneously One catalogue, one of client creates file, but other clients can not be seen in time, can deposit under multi-client scene In the inconsistent situation of catalogue.

Therefore, catalogue reading speed how is improved, is those skilled in the art's technical issues that need to address.

Summary of the invention

The object of the present invention is to provide a kind of NFS server-side catalogue read methods, and the method increase the readings of whole catalogue Speed, the user experience is improved;It is a further object of the present invention to provide a kind of NFS server-side catalogue reading devices, equipment and can Storage medium is read, there is above-mentioned beneficial effect.

In order to solve the above technical problems, the present invention provides a kind of NFS server-side catalogue read method, comprising:

When NFS server-side receives catalogue read requests, calls catalogue to read interface and read file in catalogue;

The information that file in catalogue is extracted according to presupposed information extracting rule, obtains the file information;

Information filling is made requests according to the file information, obtains response request;

Response request is back to catalogue read requests end.

Preferably, the calling catalogue reads interface and reads file in catalogue, comprising:

The NFS server side searches read the address of catalogue to last time, obtained historical address;

The historical address is modified according to parameters such as offsets, obtains directory address;

It accesses the corresponding memory space of the directory address and carries out file reading.

Preferably, the calling catalogue reads interface and reads file in catalogue, comprising:

Each file in the catalogue is read by the sequence of file-level in catalogue from high to low.

It is preferably, described that information filling is made requests according to the file information, comprising:

It calls call back function to fill the file information into corresponding structural body, generates response request.

The present invention discloses a kind of NFS server-side catalogue reading device, comprising:

Document reading unit when for receiving catalogue read requests, calling catalogue to read interface and reading file in catalogue;

Information extraction unit obtains file letter for extracting the information of file in catalogue according to presupposed information extracting rule Breath;

Response generation unit obtains response request for making requests information filling according to the file information;

Response return unit, for response request to be back to catalogue read requests end.

Preferably, the document reading unit includes:

Historical address searches subelement, read the address of catalogue to last time for the NFS server side searches, is gone through History address;

Historical address revise subelemen obtains mesh for being modified according to parameters such as offsets to the historical address Record address;

Reading subunit carries out file reading for accessing the corresponding memory space of the directory address.

Preferably, the document reading unit specifically: sequence reading unit;The sequence reading unit is used to press catalogue The sequence of middle file-level from high to low reads each file in the catalogue.

Preferably, the response generation unit specifically: readjustment fills unit;The readjustment fills unit is for calling back Letter of transfer number fills the file information into corresponding structural body, generates response request.

The present invention discloses a kind of NFS server-side catalogue reading equipment, comprising:

Memory, for storing program;

Processor, the step of NFS server-side catalogue read method is realized when for executing described program.

The present invention discloses a kind of readable storage medium storing program for executing, and program is stored on the readable storage medium storing program for executing, and described program is located The step of reason device realizes the NFS server-side catalogue read method when executing.

NFS server-side catalogue read method provided by the present invention directly reads mesh when receiving catalogue read requests File in record obtains the file information, avoids in request response for the first time to the process that each file is cached in catalogue, Due to longer, numerous relative to the current system catalog file situation of file cache process holding time, simplifying caching process can To greatly promote request average response speed, user experience is promoted;Simultaneously because eliminating file cache in catalogue reading process Step also avoids the case where information malfunctions under multi-client scene caused by updating not in time due to cache information.

The present invention also provides a kind of NFS server-side catalogue reading device, system and readable storage medium storing program for executing, have with above-mentioned Beneficial effect, details are not described herein.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.

Fig. 1 is a kind of flow chart of NFS server-side catalogue read method provided in an embodiment of the present invention;

Fig. 2 is that a kind of client provided in an embodiment of the present invention, nfs server with the library Lib interact signaling diagram;

Fig. 3 is a kind of structural block diagram of NFS server-side catalogue reading device provided in an embodiment of the present invention;

Fig. 4 is the structural block diagram that a kind of NFS server-side catalogue provided in an embodiment of the present invention reads equipment;

Fig. 5 is the structural schematic diagram that a kind of NFS server-side catalogue provided in an embodiment of the present invention reads equipment.

Specific embodiment

Core of the invention is to provide a kind of NFS server-side catalogue read method, and the method increase the readings of whole catalogue Speed, the user experience is improved;Another core of the invention is to provide a kind of NFS server-side catalogue reading device, equipment and can Read storage medium.

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

Referring to FIG. 1, Fig. 1 is the flow chart of NFS server-side catalogue read method provided in this embodiment;This method is main Include:

Step s110, it when NFS server-side receives catalogue reading (readdir) request, calls catalogue to read interface and reads File in catalogue.

The step of process of progress file reading is referred to conventional method, wherein preferably, catalogue is called to read interface Reading file in catalogue can specifically include following steps:

1), NFS server side searches read the address of catalogue to last time, obtained historical address.

It specifically, can be by calling opendir and seekdir find the address that last time reads catalogue.

2), historical address is modified according to parameters such as offsets, obtains directory address.

3), the corresponding memory space of access directory address carries out file reading.

Carrying out file reading based on above-mentioned steps can be improved reading speed, so as to further promote going for for catalogue Seek response speed.In addition, the process for carrying out catalogue file reading can also be by determining that each file storage carries out text in real time The reading etc. of part, it is not limited here.

In addition, the severity level due to different files is different, it is preferable that call catalogue to read interface and read file in catalogue Process be specifically as follows: read each file in catalogue by the sequence from high to low of file-level in catalogue.The text high to rank Part is first read, and promotes the response speed of vital document, it is of course also possible to ignore file-level, by file arrangements sequence carry out according to Secondary reading etc., it is not limited here.

It should be noted that in the present embodiment without limitation to the specific steps for realizing file reading, being referred to correlation The setting of technology progress script.

Step s120, the information that file in catalogue is extracted according to presupposed information extracting rule, obtains the file information.

Conventional method first reads the file information of entire catalogue from lib bottom, the Directory caching of nfs is then created, to reading The file taken is stored, and centre includes obtaining file attribute, the operation such as locating file inode information, is completed in caching building The file information is filled afterwards and returns to client.Ls time-consuming is very long for the first time under catalogue big in this way, although visit again later The catalogue can accelerate speed, but take a long time when access for the first time, (the common directory level by taking million grades of catalogue as an example Not), ls needs directly seriously affect normal use more than ten minutes or more for the first time.In addition, not in time due to buffer update, Can there is a situation where inconsistent (such as multi-client while to access a catalogue, client wound under multi-client scene File is built, other clients can not be seen in time).

Readdir provided by the invention reads the caching that nfs itself is not used in catalogue file process, and directly the bottom of from Layer is read, and the catalogue file process of caching when catalogue reading process avoids access for the first time simplifies catalogue reading process, is promoted Readdir handles whole efficiency.

Wherein, it can refer to file information extraction in conventional method the step of file information extraction in progress catalogue file Journey, details are not described herein.

Step s130, information filling is made requests according to the file information, obtains response request.

Step s140, response request is back to catalogue read requests end.

It is by way of sending and receiving request that client and server-side, which interact, and client is sent to server-side The file information read, after server-side receives request, is filled fixed response appealing structure by readdir request In, it is encoded, is then sent to client, the process for specifically carrying out information-package to the file information can refer in conventional method Specific steps.

Wherein it is preferred to which call back function can be called to fill the file information into corresponding structural body, generates response and ask It asks.The packaging process efficiency for calling call back function to carry out the file information is higher, and implementation is relatively simple, in the present embodiment only It is introduced by taking above-mentioned the file information filling process as an example, the manner of packing of other the file informations can refer to Jie of the present embodiment It continues.

Client can parse the file information from the request of server-side response, realize that catalogue is read.

NFS server-side catalogue read method provided in this embodiment directly reads mesh when receiving catalogue read requests File in record obtains the file information, avoids in request response for the first time to the process that each file is cached in catalogue, Due to longer, numerous relative to the current system catalog file situation of file cache process holding time, simplifying caching process can To greatly promote request average response speed, user experience is promoted;Simultaneously because eliminating file cache in catalogue reading process Step also avoids the case where information malfunctions under multi-client scene caused by updating not in time due to cache information.

To deepen understanding to NFS server-side catalogue read method provided by the invention, the present embodiment is with client to NFS Server initiates catalogue read requests, and nfs server is introduced for calling the library Lib to make requests response process.

Fig. 2 show client in the present embodiment, nfs server interacts signaling diagram with the library Lib, and catalogue reads response process It mainly comprises the steps that

1), client sends readdir request, reads 50 to 100 files every time.

2) after, nfs server-side realizes that a call back function, nfs server-side receive readdir request, the library lib is called Readdir interface directly reads file in catalogue in lib interface internal, then call back function is called to fill out the file information It fills, the file information (such as offset, file attribute information) is filled into callback request in function.

Nfs server-side for the first time is subtracted to the process of the file information addition caching in catalogue, if it is million grades of files Catalogue, original process is since addition caches time-consuming increase during ls, and after 60s, client retransmits readdir request, Ls is caused not show normally, the time will shorten 10 minutes after modification, substantially reduce the time that ls checks catalogue.

3), after filling is completed or file has been read, request is returned to by client by nfs server-side.

Based on above-mentioned introduction, NFS server-side catalogue read schemes provided in this embodiment pass through to nfs server-side Readdir process is modified, and readdir process is simplified, and subtracts building process of caching, and server-side is receiving readdir request Afterwards, according to parameters such as offsets, calling opendir and seekdir finds the position for last time reading catalogue, is then calling The interface in the library bottom lib continues to read file in catalogue, and the result of reading is directly issued client.The present invention can be effective Reduction read time of big catalogue, enable big directory access normal use, have substantially no effect on customer service normal operation, mention Rise user experience.

Referring to FIG. 3, Fig. 3 is the structural block diagram of NFS server-side catalogue reading device provided in an embodiment of the present invention;It can be with It include: document reading unit 210, information extraction unit 220, response generation unit 230 and response return unit 240.This reality The NFS server-side catalogue reading device for applying example offer can mutually be compareed with above-mentioned NFS server-side catalogue read method.

Wherein, it when document reading unit 210 is mainly used for receiving catalogue read requests, calls catalogue to read interface and reads File in catalogue;

Information extraction unit 220 is mainly used for extracting the information of file in catalogue according to presupposed information extracting rule, obtains The file information;

Response generation unit 230 is mainly used for making requests information filling according to the file information, obtains response request;

Response return unit 240, which is mainly used for that request will be replied, is back to catalogue read requests end.

Wherein it is preferred to which document reading unit can specifically include:

Historical address searches subelement, the address of catalogue is read for NFS server side searches to last time, with obtaining history Location;

Historical address revise subelemen, for being modified according to parameters such as offsets to historical address, with obtaining catalogue Location;

Reading subunit carries out file reading for accessing the corresponding memory space of directory address.

Preferably, document reading unit is specifically as follows: sequence reading unit;Sequence reading unit is used for by catalogue Chinese The sequence of part rank from high to low reads each file in catalogue.

Preferably, response generation unit is specifically as follows: readjustment fills unit;Fills unit is adjusted back for calling readjustment letter Number fills the file information into corresponding structural body, generates response request.

NFS server-side catalogue reading device provided in this embodiment directly carries out catalogue text by controlling document reading unit The reading of part, rather than the reading of the file information is carried out by caching, whole catalogue reading speed is improved, user's body is improved It tests.

Referring to FIG. 4, Fig. 4 is the structural block diagram that NFS server-side catalogue provided in this embodiment reads equipment;The equipment can To include: memory 300 and processor 310.NFS server-side catalogue, which reads equipment, can refer to above-mentioned NFS server-side catalogue reading Take the introduction of method.

Wherein, memory 300 is mainly used for storing program;

Processor 310 is mainly used for the step of realizing above-mentioned NFS server-side catalogue read method when executing program.

Referring to FIG. 4, the structural schematic diagram of equipment is read for NFS server-side catalogue provided in this embodiment, NFS service End catalogue, which reads equipment, to generate bigger difference because configuration or performance are different, may include one or more processing Device (central processing units, CPU) 322 (for example, one or more processors) and memory 332, one (such as one or more mass memories of storage medium 330 of a or more than one storage application program 342 or data 344 Equipment).Wherein, memory 332 and storage medium 330 can be of short duration storage or persistent storage.It is stored in storage medium 330 Program may include one or more modules (diagram does not mark), and each module may include in data processing equipment Series of instructions operation.Further, central processing unit 322 can be set to communicate with storage medium 330, service in NFS Catalogue is held to read the series of instructions operation executed in storage medium 330 in equipment 301.

NFS server-side catalogue read equipment 301 can also include one or more power supplys 326, one or one with Upper wired or wireless network interface 350, one or more input/output interfaces 358, and/or, one or more behaviour Make system 341, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM etc..

Step in NFS server-side catalogue read method described in above figure 1 can be read by NFS server-side catalogue to be set Standby structure is realized.

Present embodiment discloses a kind of readable storage medium storing program for executing, program is stored on readable storage medium storing program for executing, program is by processor The step of NFS server-side catalogue read method is realized when execution, wherein it is corresponding that NFS server-side catalogue read method can refer to Fig. 1 Embodiment, details are not described herein.

The readable storage medium storing program for executing be specifically as follows USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), the various program storage generations such as random access memory (Random Access Memory, RAM), magnetic or disk The readable storage medium storing program for executing of code.

Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities The difference of example is applied, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment Speech, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration ?.

Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered Think beyond the scope of this invention.

The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology In any other form of storage medium well known in field.

NFS server-side catalogue read method provided by the present invention, device, equipment and readable storage medium storing program for executing are carried out above It is discussed in detail.Used herein a specific example illustrates the principle and implementation of the invention, above embodiments Explanation be merely used to help understand method and its core concept of the invention.It should be pointed out that for the common of the art , without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for technical staff, these Improvement and modification are also fallen within the protection scope of the claims of the present invention.

Claims (10)

1. a kind of NFS server-side catalogue read method characterized by comprising
When NFS server-side receives catalogue read requests, calls catalogue to read interface and read file in catalogue;
The information that file in catalogue is extracted according to presupposed information extracting rule, obtains the file information;
Information filling is made requests according to the file information, obtains response request;
Response request is back to catalogue read requests end.
2. NFS server-side catalogue read method as shown in claim 1, which is characterized in that the calling catalogue reads interface Read file in catalogue, comprising:
The NFS server side searches read the address of catalogue to last time, obtained historical address;
The historical address is modified according to parameters such as offsets, obtains directory address;
It accesses the corresponding memory space of the directory address and carries out file reading.
3. NFS server-side catalogue read method as shown in claim 1, which is characterized in that the calling catalogue reads interface Read file in catalogue, comprising:
Each file in the catalogue is read by the sequence of file-level in catalogue from high to low.
4. NFS server-side catalogue read method as shown in claim 1, which is characterized in that described according to the file information Make requests information filling, comprising:
It calls call back function to fill the file information into corresponding structural body, generates response request.
5. a kind of NFS server-side catalogue reading device characterized by comprising
Document reading unit when for receiving catalogue read requests, calling catalogue to read interface and reading file in catalogue;
Information extraction unit obtains the file information for extracting the information of file in catalogue according to presupposed information extracting rule;
Response generation unit obtains response request for making requests information filling according to the file information;
Response return unit, for response request to be back to catalogue read requests end.
6. NFS server-side catalogue reading device as stated in claim 5, which is characterized in that the document reading unit includes:
Historical address searches subelement, reads the address of catalogue to last time for the NFS server side searches, with obtaining history Location;
Historical address revise subelemen, for being modified according to parameters such as offsets to the historical address, with obtaining catalogue Location;
Reading subunit carries out file reading for accessing the corresponding memory space of the directory address.
7. NFS server-side catalogue reading device as stated in claim 5, which is characterized in that the document reading unit is specific Are as follows: sequence reading unit;The sequence reading unit is used to read the mesh by the sequence of file-level in catalogue from high to low Each file in record.
8. NFS server-side catalogue reading device as stated in claim 5, which is characterized in that the response generation unit is specific Are as follows: readjustment fills unit;The readjustment fills unit is for calling call back function to fill the file information to corresponding knot In structure body, response request is generated.
9. a kind of NFS server-side catalogue reads equipment characterized by comprising
Memory, for storing program;
Processor realizes the NFS server-side catalogue reading side as described in any one of Claims 1-4 when for executing described program The step of method.
10. a kind of readable storage medium storing program for executing, which is characterized in that be stored with program on the readable storage medium storing program for executing, described program is located It manages and is realized when device executes as described in any one of Claims 1-4 the step of NFS server-side catalogue read method.
CN201910294517.9A 2019-04-12 2019-04-12 NFS server-side catalogue read method, device, equipment and storage medium CN110019041A (en)

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CN107766374A (en) * 2016-08-19 2018-03-06 上海凯翔信息科技有限公司 The optimization method and system that a kind of mass small documents storage is read
US20180189334A1 (en) * 2016-12-30 2018-07-05 Dropbox, Inc. Accessing historical content items of a content management system through placeholders
US20180322057A1 (en) * 2017-05-02 2018-11-08 Mellanox Technologies Ltd. Computing In Parallel Processing Environments

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
CN103116618A (en) * 2013-01-28 2013-05-22 南开大学 Telefile system mirror image method and system based on lasting caching of client-side
CN106817388A (en) * 2015-11-30 2017-06-09 阿里巴巴集团控股有限公司 The system that virtual machine, host obtain the method, device and access data of data
CN107766374A (en) * 2016-08-19 2018-03-06 上海凯翔信息科技有限公司 The optimization method and system that a kind of mass small documents storage is read
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