CN110519355A - Issue method, system, equipment and the storage medium of OVA the file information - Google Patents
Issue method, system, equipment and the storage medium of OVA the file information Download PDFInfo
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- CN110519355A CN110519355A CN201910760799.7A CN201910760799A CN110519355A CN 110519355 A CN110519355 A CN 110519355A CN 201910760799 A CN201910760799 A CN 201910760799A CN 110519355 A CN110519355 A CN 110519355A
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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
- G06F16/14—Details of searching files based on file metadata
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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Abstract
The invention discloses a kind of methods for issuing OVA the file information, are applied in server, OVA file is made of multinomial subfile, comprising: the first inquiry instruction that receiving host end is sent；Read the file name and file size for corresponding to each single item subfile of OVA file of the first inquiry instruction；In the way of file stream, the file name of the every subfile read out and file size are successively sent to host side, so that host side gets OVA the file information.Using the scheme of the application, when advantageously reducing server and issuing OVA the file information, more degree of the memory space of caused host side are occupied.Disclosed herein as well is a kind of system for issuing OVA the file information, equipment and storage mediums, have corresponding effect.
Description
Technical field
The present invention relates to server technology fields, more particularly to a kind of method for issuing OVA the file information, system, set
Standby and storage medium.
Background technique
OVA (Open Virtualization Appliance, open virtual equipment) is a kind of cloud computing and server
A kind of data format being commonly used under virtual platform, the file of the format is by DMTF (Distributed Management
Task Force, distributed management task group) definition includes all information required for for disposing virtual machine.
OVA file is a compressed package, i.e. a tar packet, generally includes virtual disk files, OVF (Open
Virtualization Format, open virtualization format) file and mf file.Wherein virtual disk files are virtual machines
Data storage file；OVF file is the relevant configuration file of virtual machine, and main includes virtual disk, memory and the CPU of virtual machine
Configuration, network configuration, OS Type etc.；Mf file is the set to SHA such as virtual disk files, OVF files, main to use
In preventing image file from being distorted by illegal user.
OVA file is generally placed in shared server, is used in order to which OVA file can be downloaded by multiple main frames.
But in many occasions, host side does not need to use entire OVA file, but only that knowing each in OVA file
The title and corresponding file size of item file, or only need using partial data therein, such as only need to obtain
Take virtual disk files therein.And in traditional scheme, host side be directly by entire OVA file download to local, then
Carry out local parsing, finally analytically after file in obtain the data of needs.Such scheme can occupy double in host side
Memory space, that is, need to store the every subfile obtained after a complete OVA file and the OVA document analysis, example
Such as parse storage virtual disk files, OVF file and mf file.Especially only needing to utilize the items in OVA file
In the occasion of the title of file and corresponding file size, or need concurrently to obtain the occasion of the information of multiple OVA files
In, such scheme will lead to the excessive occupancy of great memory space, and the function of causing host side to obtain OVA the file information is tight
It is limited again.
In conclusion when how to reduce server and issuing OVA the file information, more degree of the memory space of caused host side
It occupies, is current those skilled in the art technical problem urgently to be solved.
Summary of the invention
The object of the present invention is to provide a kind of method for issuing OVA the file information, system, equipment and storage mediums, with drop
When low server issues OVA the file information, more degree of the memory space of caused host side are occupied.
In order to solve the above technical problems, the invention provides the following technical scheme:
A method of OVA the file information is issued, is applied in server, OVA file is made of multinomial subfile, packet
It includes:
The first inquiry instruction that receiving host end is sent；
File name and the file for reading each single item subfile of OVA file for corresponding to first inquiry instruction are big
It is small；
In the way of file stream, successively the file name of the every subfile read out and file size are sent to
The host side, so that the host side gets OVA the file information.
Preferably, further includes:
Receive the second inquiry instruction for any one subfile in the OVA file；
Since the initial position of this subfile, the data content that this subfile is obtained in the way of file stream is straight
Extremely the reading of this subfile is finished, and carries out data parsing in each read, and after parsing according to preset agreement
Data content after each parsing is issued to the host side.
Preferably, further includes:
Receive the download instruction for being directed to the OVA file；
According to preset order, target subfile is selected in the subfile to be issued from items；
The data content of the target subfile is obtained in the way of file stream, and after parsing, according to preset
Data content after each parsing is issued to the host side by agreement；
It returns and executes described according to preset order, the behaviour of target subfile is selected in the subfile to be issued from items
Make, until every subfile in the OVA file was selected primary conduct target subfile, to complete the OVA text
Part issues.
It is preferably, described that the data content after each parsing is issued to the host side according to preset agreement, comprising:
When issuing data content every time, data name belonging to the data content that this time issues is issued in advance, the data
The size of data of the data start of content and the data content, then the host side will be issued in the secondary data.
Preferably, it is described receive the download instruction for the OVA file after, it is described according to preset order, from each
Before selecting target subfile in subfile to be issued, further includes:
Detecting the host side whether there is the file of the same name for the every subfile being directed in the OVA file；
If there is the file of the same name of at least one subfile, then output error prompt information；
If it is not, then executing described according to preset order, target subfile is selected in the subfile to be issued from items
Operation.
Preferably, the data content that the target subfile is obtained in the way of file stream, comprising:
The data content of the target subfile is obtained in the way of file stream, and the data content obtained every time is big
It is small to be lower than preset network transmission threshold limit.
A kind of system issuing OVA the file information is applied in server, and OVA file is made of multinomial subfile, packet
It includes:
First inquiry instruction receiving module, the first inquiry instruction sent for receiving host end；
First read module, for reading each single item subfile for corresponding to the OVA file of first inquiry instruction
File name and file size；
First issues module, in the way of file stream, successively by the file name of the every subfile read out
And file size is sent to the host side, so that the host side gets OVA the file information.
Preferably, further includes:
Second inquiry instruction receiving module, for receiving the second of any one subfile being directed in the OVA file
Inquiry instruction；
Second issues module, for obtaining this in the way of file stream since the initial position of this subfile
The data content of subfile is until the reading of this subfile is finished, and carry out data parsing in each read, and parsing
The data content after each parsing is issued to the host side according to preset agreement later.
A kind of equipment issuing OVA the file information, comprising:
Memory, for storing computer program；
Processor realizes for executing the computer program OVA the file information described in any of the above embodiments that issues
The step of method.
A kind of computer readable storage medium is stored with computer program on the computer readable storage medium, described
The step of method described in any of the above embodiments for issuing OVA the file information is realized when computer program is executed by processor.
In the scheme of the application, when host side only needs to obtain the text of each single item subfile of the OVA file in server
When part title and file size, entire OVA file can't be issued to host side, but host side hair is being read by server
After the first inquiry instruction sent, the filename of each single item subfile of the OVA file corresponding to the first inquiry instruction is read out
Title and file size, and then in the way of file stream, successively by the file name and text of the every subfile read out
Part size is sent to host side, so that host side is available to arrive OVA the file information.Therefore, the scheme of the application is advantageous
When reduction server issues OVA the file information, more degree of the memory space of caused host side are occupied.
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
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of implementation flow chart for the method for issuing OVA the file information in the present invention；
Fig. 2 is a kind of structural schematic diagram for the system for issuing OVA the file information in the present invention；
Fig. 3 is a kind of structural schematic diagram for the equipment for issuing OVA the file information in the present invention.
Specific embodiment
Core of the invention is to provide a kind of method for issuing OVA the file information, advantageously reduces server and issues OVA text
When part information, more degree of the memory space of caused host side are occupied.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is a kind of implementation flow chart for the method for issuing OVA the file information in the present invention, this is issued
The method of OVA the file information is applied in server, may comprise steps of:
Step S101: the first inquiry instruction that receiving host end is sent.
First inquiry instruction can be defined as to IOVA instruction, i.e. inquire OVA instruction.Received server-side is to host
After holding the first inquiry instruction sent, the operation of step S102 can be executed.
Certainly, host side needs to pre-establish the communication connection with server, could be successfully transmitted the first inquiry instruction
To server.When host side is established with the communication connection of server, IP, the port, use of server can be inputted in host side
The information such as name in an account book and login password communicate to connect to establish.In addition, the communication protocol that server is taken is different, the communication of foundation
Connection can be adaptably different.Such as server typically FTP (File Transfer Protocol, file transmission
Agreement) server can also have the server of other forms certainly in other occasions.
Step S102: read correspond to the first inquiry instruction OVA file each single item subfile file name and
File size.
It will include the information such as the OVA file name for needing to issue in first inquiry instruction.OVA file is by multinomial subfile structure
At in most of occasion, by virtual disk files, OVF file and mf file are constituted.In small part occasion, can also exist
More subfiles, such as there is also ios image files.It is emphasized that OVA file is made of multinomial subfile, not
It is to say for these subfiles to be placed in a file just to constitute OVA file, but need these subfiles according to default
Format compressed, compressed compressed package become OVA format file.
The organized formats of OVA file can be shown in Table one.
Table one:
| File Header | File Content | …… | File Header | File Content |
When OVA file is by virtual disk files, OVF file and this 3 subfiles compositions of mf file, then there are 3
The part File Header and the part corresponding 3 File Content.
The part File Header mainly including file name, size, permission control, uname, gname, file creation,
The information such as modification time, the part File Content are the data storage of corresponding resource, the i.e. specific file content of subfile.
Server can find OVA file required for host side according to the content of the first inquiry instruction, and then inquiring should
The file name and file size of each single item subfile of OVA file.Such as the OVA file has 3 portions File Header
Point and the part corresponding 3 File Content, then can be read out from the 1st File Header of OVA top of file
Then the file name and file size of first item subfile skip the File Content of the 1st subfile, then from
The file name and file size of Section 2 subfile are read out in 2 File Header, finally from the 3rd File
The file name and file size of Section 3 subfile are read out in Header.
Step S103: in the way of file stream, successively by the file name and file of the every subfile read out
Size is sent to host side, so that host side gets OVA the file information.
It is big in the file name and file for reading out each single item subfile of the OVA file corresponding to the first inquiry instruction
It after small, needs according to file stream, or the mode of referred to as data flow, successively by the file name of the every subfile read out
And file size is sent to host side.Such as in a kind of specific occasion, transformat is as shown in Table 2.
Table two:
| File name | File size | …… | File name | File size |
File name can usually use 16 systems, and 128 bytes are transmitted, and file size can usually use 16
System, 16 bytes are transmitted, i.e., host side receives 128+16=144 bytes every time.Certainly, in other occasions, text
Space occupied by part title and file size can be set and be adjusted according to actual needs.
In the scheme of the application, when host side only needs to obtain the text of each single item subfile of the OVA file in server
When part title and file size, entire OVA file can't be issued to host side, but host side hair is being read by server
After the first inquiry instruction sent, the filename of each single item subfile of the OVA file corresponding to the first inquiry instruction is read out
Title and file size, and then in the way of file stream, successively by the file name and text of the every subfile read out
Part size is sent to host side, so that host side is available to arrive OVA the file information.Therefore, the scheme of the application is advantageous
When reduction server issues OVA the file information, more degree of the memory space of caused host side are occupied.
In a kind of specific embodiment of the invention, can also include:
Step 1: the download instruction for being directed to OVA file is received；
Step 2: according to preset order, target subfile is selected in the subfile to be issued from items；
Step 3: obtaining the data content of target subfile, and after parsing in the way of file stream, according to default
Agreement the data content after each parsing is issued to host side；
Step 4: returning to step two operation, until every subfile in OVA file was selected primary work
For target subfile, to complete issuing for OVA file.
Aforementioned four step is described collectively convenient for description.
Download instruction can be defined as to DOVA instruction, i.e. download OVA instruction.Received server-side is to host side
After the download instruction of transmission, the operation of step 2 can be executed.Certainly, host side needs to pre-establish logical with server
Letter connection.It would generally include the information such as the file name of OVA for needing to download in the download instruction.
Preset sequence can arbitrarily be set in advance by staff, and be can according to need and be adjusted, such as set
Fixed sequence are as follows: preferentially issue virtual disk files, i.e., preferentially select virtual disk files as target subfile, later under
Send out OVF file, finally issue mf file, i.e., virtual disk files issue finish after, choose OVF file as target Ziwen
Part finally chooses mf file as target subfile.For another example, preset sequence are as follows: preferential OVF file of choosing is as target Ziwen
Part, later mf file, last virtual disk files.
After selecting target subfile, need to obtain the data content of target subfile in the way of file stream, and
After parsing, the data content after each parsing is issued to host side according to preset agreement.
Such as the target subfile selected is virtual disk files, then virtual disk text is obtained in the way of file stream
The data content of part, the data content include the File Header of the virtual disk files and File of virtual disk files
Content.The File Header of target subfile usually can be first issued, then issues the File Content of target subfile,
Certainly, either File Header or File Content is to obtain and parse to issue in the way of file stream.
When issuing the data content of each single item subfile, server needs the inquiry respective text of each single item subfile in advance
Part initial position, so as to since the initial position of this subfile, carry out data distributing in the way of file stream, and
And need to inquire the file size of every subfile in advance, so that server can know whether all to issue this subfile
It finishes.
Further, since being issued in the way of file stream, it usually needs inform host side by dependent instruction
This data issued specific location locating in subfile, that is, need to be issued according to scheduled agreement, such as can be with
It is issued according to the transport protocol of table 3.
Table three:
| Data name | Data start position | Size of data | Data content |
Such as when data content in the File Header for issuing virtual disk files, data name is virtual magnetic
The File Header of disk file.When issuing the data content in the File Header of virtual disk files for the first time, data are opened
Beginning position is the initial position of the File Header of virtual disk files, the subsequent difference with the data content issued, number
Just adaptably change according to starting position.What size of data indicated is the size of this data content issued.
Data name can usually be transmitted using 128 bytes, and data start position can usually use 16
Bytes is transmitted, and size of data can usually be transmitted using 16 bytes, and data content can then be set in advance
It is fixed, and usually, the size of the data content issued every time can depend on getting in the way of file stream every time
Data content size.
And in a specific embodiment, the data content of target subfile is obtained in the way of file stream, it can be with
Specifically: the size for the data content for obtaining the data content of target subfile in the way of file stream, and obtaining every time is low
In preset network transmission threshold limit.
In this kind of embodiment, the server of the application is considered when issuing data, is one and is constantly obtained data, constantly
The process for parsing and issuing.The data volume obtained every time, which can according to need, to be set, but the data in view of issuing exist
The limitation of network transmission obtains the accumulation that too many data are easy to cause data to be issued, therefore the number obtained every time every time
According to being dimensioned to lower than preset network transmission threshold limit for content.For example, network transmission limits threshold in concrete scene
Value is 2,000,000, set obtain every time 1,000,000 data content, after parsing can be with this 1,000,000 data content be issued to master
Generator terminal.As can be seen that such setting is not allowed to easily cause the accumulation of data to be issued.
In the aforementioned embodiment, it when issuing data content every time, is issued belonging to the data content that this time issues in advance
The size of data of data name, the data start of the data content and the data content, then will be under the secondary data content
It is sent to host side, is issued in the way of file stream to realize, such as in aforementioned concrete scene, host side is first every time
It obtains 128+16+16=160 bytes and obtains corresponding data content according still further to the size of data in 160 bytes.When
So, in other occasions, this can also be had no effect on using the transport protocol of other forms come the transmission mode of actual file stream
The implementation of invention.
After issuing and finishing by any one subfile, it is required to judge whether there is also to be issued in OVA file
Subfile.If it is present return step two, when the subfile not wait issue, i.e., every subfile in OVA file is equal
When being selected primary conduct target subfile, issuing for OVA file is just completed.The usually available composition OVA of server
The respective file initial position of every subfile of file and file size.When a certain item subfile, which issues, to be finished, pass through
Switch the initial position of reading of content, realizes the switching for the project that issues.
Server be can be seen that after receiving download instruction, it, can't be in host when issuing OVA file to host side
End forms a complete OVA file.It specifically, server has directly carried out the parsing of OVA file, also, is according to file
The mode of stream, while obtaining data content to be issued, side parses and issues.Such as the OVA file issued is by virtual disk files,
OVF file and mf file are constituted, then server issues finish after, host side can only preserve virtual disk files, OVF text
Part and mf file cause to occupy excessive host side without also preserving a complete OVA file in such as traditional scheme
Memory space.Therefore, this kind of embodiment advantageously reduces when issuing OVA file to the occupancy of host side memory space.
In a kind of specific embodiment of the invention, after above-mentioned steps one, before step 2, can also include:
Detecting host side whether there is the file of the same name for the every subfile being directed in OVA file；
If there is the file of the same name of at least one subfile, then output error prompt information；
If it is not, then executing the operation of step 2.
In general, being directed to OVA file to be issued, there is no files of the same name in host side, but in this kind of embodiment, examine
Consider the case where host side may cause naming errors due to user misoperation, leads in host side that there are files of the same name.When depositing
In file of the same name, the OVA file that server issues will cover original content in host side, cause losing for correct data
It loses, therefore in this kind of embodiment, detection host side whether there is the file of the same name for every subfile in OVA file,
If there is the file of the same name of at least one subfile, then can output error prompt information, interruption issue process.It otherwise can root
According to OVA file name to be issued, an empty file is created in host side, subsequent OVA file issued can be placed in
In the empty file.The operation of step 2 can be normally executed, continue to execute the application issues process.
In a kind of specific embodiment of the invention, can also include:
Receive the second inquiry instruction for any one subfile in OVA file；
Since the initial position of this subfile, the data content that this subfile is obtained in the way of file stream is straight
Extremely the reading of this subfile is finished, and carries out data parsing in each read, and after parsing according to preset agreement
Data content after each parsing is issued to host side.
In the occasion of part, host side may not be needed to obtain each single item subfile in OVA file, but only need to obtain
When taking one of them subfile, such as only needing to obtain OVF file, the second inquiry instruction can be defined as to IOVF instruction.
In this kind of embodiment, receive for any one subfile in OVA file the second inquiry instruction it
Afterwards, server can only issue this targeted subfile of the second inquiry instruction, compared to needing in traditional scheme
Entire OVA file is issued, the memory space that host side occupies in this kind of occasion is advantageously reduced.
Corresponding to above method embodiment, the embodiment of the invention also provides a kind of system for issuing OVA the file information,
Reference can be corresponded to each other with above.
The system for issuing OVA the file information is applied in server, may include:
First inquiry instruction receiving module 201, the first inquiry instruction sent for receiving host end；
First read module 202, for reading the text for corresponding to each single item subfile of OVA file of the first inquiry instruction
Part title and file size；
First issues module 203, in the way of file stream, successively by the filename of the every subfile read out
Claim and file size is sent to host side, so that host side gets OVA the file information.
In a kind of specific embodiment of the invention, further includes:
Second inquiry instruction receiving module, for receiving the second inquiry of any one subfile being directed in OVA file
Instruction；
Second issues module, for obtaining this in the way of file stream since the initial position of this subfile
The data content of subfile is until the reading of this subfile is finished, and carry out data parsing in each read, and parsing
The data content after each parsing is issued to host side according to preset agreement later.
In a kind of specific embodiment of the invention, further includes:
Download instruction receiving module, for receiving the download instruction for being directed to OVA file；
Target subfile chooses module, for selecting target in the subfile to be issued from items according to preset order
Subfile；
Third issues module, for obtaining the data content of target subfile in the way of file stream, and in parsing
Afterwards, the data content after each parsing is issued to host side according to preset agreement；
Loop module chooses module for returning to triggering target subfile, until every subfile quilt in OVA file
It chose once as target subfile, to complete issuing for OVA file.
In a kind of specific embodiment of the invention, third issues module, is specifically used for:
The data content of target subfile is obtained in the way of file stream, and after parsing, issuing data every time
When content, issue data name belonging to the data content that this time issues in advance, the data start of the data content and
The size of data of the data content, then host side will be issued in the secondary data.
In a kind of specific embodiment of the invention, the downloading for being directed to OVA file is received in download instruction receiving module
After instruction, before triggering target subfile chooses module, further includes judgment module, is used for:
Detecting host side whether there is the file of the same name for the every subfile being directed in OVA file；
If there is the file of the same name of at least one subfile, then output error prompt information；
If it is not, then triggering target subfile chooses module.
In a kind of specific embodiment of the invention, third issues module, is specifically used for:
The size for the data content for obtaining the data content of target subfile in the way of file stream, and obtaining every time is low
It, will be under the data content after each parsing according to preset agreement in preset network transmission threshold limit, and after parsing
It is sent to host side.
Corresponding to above method and system embodiment, the embodiment of the invention also provides one kind to issue OVA the file information
Equipment and a kind of computer readable storage medium, can with correspond to each other reference above.
This issues the equipment of OVA the file information, comprising:
Memory 301, for storing computer program；
Processor 302 is realized in any of the above-described embodiment for executing computer program and issues OVA the file information
The step of method.
It is stored with computer program on computer readable storage medium, is realized when computer program is executed by processor above-mentioned
The step of method for issuing OVA the file information in any embodiment.Computer readable storage medium mentioned here include with
Machine memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk,
Any other form of storage medium well known in moveable magnetic disc, CD-ROM or technical field.
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.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand technical solution of the present invention and its core concept.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 method for issuing OVA the file information, which is characterized in that be applied in server, OVA file is by multinomial subfile
It constitutes, comprising:
The first inquiry instruction that receiving host end is sent；
Read the file name and file size for corresponding to each single item subfile of OVA file of first inquiry instruction；
In the way of file stream, successively the file name of the every subfile read out and file size are sent to described
Host side, so that the host side gets OVA the file information.
2. the method according to claim 1 for issuing OVA the file information, which is characterized in that further include:
Receive the second inquiry instruction for any one subfile in the OVA file；
Since the initial position of this subfile, the data content of this subfile is obtained in the way of file stream until will
The reading of this subfile finishes, and carries out data parsing in each read, and after parsing will be every according to preset agreement
Data content after secondary parsing is issued to the host side.
3. the method according to claim 1 for issuing OVA the file information, which is characterized in that further include:
Receive the download instruction for being directed to the OVA file；
According to preset order, target subfile is selected in the subfile to be issued from items；
The data content of the target subfile is obtained in the way of file stream, and after parsing, according to preset agreement
Data content after each parsing is issued to the host side；
It returns and executes described according to preset order, the operation of target subfile is selected in the subfile to be issued from items, directly
It was selected primary conduct target subfile to every subfile in the OVA file, to complete under the OVA file
Hair.
4. the method according to claim 3 for issuing OVA the file information, which is characterized in that described according to preset agreement
Data content after each parsing is issued to the host side, comprising:
When issuing data content every time, data name belonging to the data content that this time issues is issued in advance, the data content
Data start and the data content size of data, then the host side will be issued in the secondary data.
5. the method according to claim 3 for issuing OVA the file information, which is characterized in that receive described for described
It is described according to preset order after the download instruction of OVA file, target subfile is selected in the subfile to be issued from items
Before, further includes:
Detecting the host side whether there is the file of the same name for the every subfile being directed in the OVA file；
If there is the file of the same name of at least one subfile, then output error prompt information；
If it is not, then executing described according to preset order, the behaviour of target subfile is selected in the subfile to be issued from items
Make.
6. according to the described in any item methods for issuing OVA the file information of claim 3 to 5, which is characterized in that described according to text
The mode of part stream obtains the data content of the target subfile, comprising:
The data content of the target subfile is obtained in the way of file stream, and the size of the data content obtained every time is low
In preset network transmission threshold limit.
7. a kind of system for issuing OVA the file information, which is characterized in that be applied in server, OVA file is by multinomial subfile
It constitutes, comprising:
First inquiry instruction receiving module, the first inquiry instruction sent for receiving host end；
First read module, for reading the file for corresponding to each single item subfile of OVA file of first inquiry instruction
Title and file size；
First issues module, in the way of file stream, successively by the file name of the every subfile read out and
File size is sent to the host side, so that the host side gets OVA the file information.
8. the system according to claim 7 for issuing OVA the file information, which is characterized in that further include:
Second inquiry instruction receiving module, for receiving the second inquiry of any one subfile being directed in the OVA file
Instruction；
Second issues module, for obtaining this Ziwen in the way of file stream since the initial position of this subfile
The data content of part is until the reading of this subfile is finished, and carry out data parsing in each read, and after parsing
The data content after each parsing is issued to the host side according to preset agreement.
9. a kind of equipment for issuing OVA the file information characterized by comprising
Memory, for storing computer program；
Processor issues OVA file as claimed in any one of claims 1 to 6 to realize for executing the computer program
The step of method of information.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program is realized when the computer program is executed by processor and issues OVA file letter as claimed in any one of claims 1 to 6
The step of method of breath.
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