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 PDFInfo
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- 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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/17—Details of further file system functions
- G06F16/172—Caching, prefetching or hoarding of files
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/18—File system types
- G06F16/182—Distributed file systems
- G06F16/1824—Distributed file systems implemented using Network-attached Storage [NAS] architecture
- G06F16/183—Provision of network file services by network file servers, e.g. by using NFS, CIFS
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
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.
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Application publication date: 20190716 |