CN101986651B - Remote storage method, remote storage system and client - Google Patents
Remote storage method, remote storage system and client Download PDFInfo
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- CN101986651B CN101986651B CN 201010265704 CN201010265704A CN101986651B CN 101986651 B CN101986651 B CN 101986651B CN 201010265704 CN201010265704 CN 201010265704 CN 201010265704 A CN201010265704 A CN 201010265704A CN 101986651 B CN101986651 B CN 101986651B
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Abstract
The invention relates to the field of communication, and discloses a remote storage method, a remote storage system and a client. The method comprises the following steps of: realizing a structure of a network attached storage (NAS) at a storage server; virtualizing a magnetic disk at a client, wherein the content stored in the server is mapped on the virtual magnetic disk; and intercepting and transmitting an operation request of the virtual magnetic disk to the server before the operation request reaches a sector-level request to ensure that the server correctly processes the operation request. A completely new remote storage mode, in which storage area network (SAN) equipment (original equipment is used at the client in place of non-shared equipment, and the system is taken as a local disk) is formed at the client and NAS is formed at the server, is formed, so that the advantages of the NAS and the SAN are effectively combined, and a plurality of users can very conveniently share the same file and catalogue.
Description
Technical field
The present invention relates to the communications field, particularly the memory technology in the communications field.
Background technology
In existing storage system, mainly contain two kinds of patterns: network attached storage (NetworkAttached Storage is called for short " NAS ") pattern and storage area network (Storage Area Network is called for short " SAN ") pattern.
Wherein, NAS is generally defined as a kind of special dedicated data stores server, comprise memory device (for example disk array, CD/DVD driver, tape drive or movably storage medium) and embedded systems soft ware, cross-platform file-sharing function can be provided.NAS is usually at a local area network (LAN) (LocalArea Network; abbreviation " LAN ") node that occupies oneself on; need not the intervention of application server; allow user's access data on network; in this configuration, all data on NAS centralized management and the processing network unload load from application or enterprise servers; effectively reduce TCO, the protection customer investment.Its principle as shown in Figure 1, NAS is file fragment transmission over networks, the storage mode on server is document directory structure.NAS possesses following advantage:
(1) be easy to backup, if occur hardware damage (damaging such as hard disk sector) on the server, only can the broken parts file.
(2) be fit to share the data storage, data realize sharing easily.
SAN is a kind of framework in the Computerized Information Processing Tech, and it couples together server and long-range computer memory device (such as disk array, tape library), so that these memory devices seem similarly to be local.Its principle as shown in Figure 2, SAN is sector data transmission over networks, the storage mode on server is image file.SAN possesses following advantage:
(1) be expressed as the primary memory device of operating system in client, the privacy of data better.
(2) speed of transmission.
(3) be fit to the individual character storage, data more easily realize privacy.
(4) general real in hardware, such as blade type ISCSI Server, arrangement is fairly simple.
Yet, no matter be NAS or SAN, its shortcoming is separately arranged.Such as the shortcoming of NAS is:
(1) is expressed as shared dish/People Near Me (Windows)/samba (Linux) in client computer, because be the data of sharing, is difficult to accomplish the privacy of data.
(2) speed of transmission is slower.
(3) general real in software, such as FTP Server/Samba/...., more difficult Hardware; Need certain professional knowledge during arrangement.
The shortcoming of SAN is:
(1) owing to show as image file at server, stature is all larger, and directly backup is basically impossible.
(2) data are not easy to share between different user.
(3) transmission is sector data, and unencryption is very likely caught from network layer.
No matter that is to say, be to select NAS as the remote storage mode, still selects SAN as the remote storage mode, all has predicament separately, the advantage of NAS and SAN can't be carried out combination.
Summary of the invention
The object of the present invention is to provide a kind of method and system and client of remote storage, so that a plurality of user can share identical file and catalogue very easily, what store at server is bibliographic structure, is easy to backup; Be the former generating apparatus of operating system in client computer, have good privacy, effectively combine the advantage of NAS and SAN.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of method of remote storage, comprise following steps:
The content of client is stored in network attached storage NAS mode at server end, the content map of described server end being stored in client is in virtual disk;
When the user of described client operates described virtual disk, will before arriving the sector-level request, intercept and capture the operation requests of this virtual disk, and the described operation requests that will intercept and capture is transferred to described server end;
Described server end is to the described operation requests of described client end response.
Embodiments of the present invention also provide a kind of remote storage system, comprise server end and client;
Described Server Side Include: the server file system module, be used in network attached storage NAS mode the content of client being stored, and according to the operation requests from described client, to the described operation requests of described client end response;
Described client comprises: explanation module and transport module;
The content map that described explanation module is used for storing on the described server end is to virtual disk, and when the user of described client operates described virtual disk, will intercept and capture before arriving the sector-level request the operation requests of this virtual disk;
Described transport module is used for the described operation requests that described explanation module is intercepted and captured is transferred to described server end.
Embodiment of the present invention in terms of existing technologies, realize the structure of NAS at the stores service end, fictionalize disk in client, be mapped with the content of storing on the server end on this virtual disk, by will before arriving the sector-level request, intercepting and capturing and be transferred to server end to the operation requests of this virtual disk, can guarantee the operation requests of this virtual disk is still file fragment, transmission also be file fragment, thereby so that server end can correctly be processed this operation requests.That is to say that having formed a kind of is SAN equipment (client is used former generating apparatus but not shared device, and system thinks it is this domain) in client, is the brand-new remote storage mode of NAS in service end.Ideally solve the predicament of SAN and NAS separate, stored server, thereby for SAN memory module or NAS memory module, possessed following advantage:
(1) be the former generating apparatus of operating system in client, privacy is fine;
(2) transmission speed very fast (slightly being slower than SAN, faster than NAS);
What (3) store at server is bibliographic structure, is easy to backup.
(4) server end and client are done private data and Data sharing model together in fact, realize very quickly and easily individual character storage and total storage.
In addition, client need to be encrypted transmission to operation requests when operation requests is transferred to server end, has guaranteed that data form with ciphertext on network receives and dispatches safely, so that the confidentiality of the transmission of data is fabulous.
In addition, server end also needs to judge this operation requests whether within this client user's authority before the client end response operation requests, if within this client user's authority, then again to the result of client end response operation requests; If within this client user's authority, then do not return miscue to client.Manage by the authority to the user, so that the user can exclusively enjoy file and catalogue, or share same or a plurality of files and catalogue with other users or customer group, and can enjoy identical or different mode of operation license at the file of sharing and catalogue.
In addition, can carry out buffer memory to user's authority information, when needing the decision operation request whether within the user's of client authority, can be directly carry out this judgement according to the authority information of buffer memory, thereby effectively accelerated the service speed to the remote storage file.
Description of drawings
Fig. 1 is according to NAS principle schematic of the prior art;
Fig. 2 is according to SAN principle schematic of the prior art;
Fig. 3 is the method flow diagram according to the remote storage of first embodiment of the invention;
Fig. 4 is according to the capturing operation request in the first embodiment of the invention and is transferred to the schematic diagram of server end;
Fig. 5 is the method schematic diagram according to the remote storage of first embodiment of the invention;
Fig. 6 is the structural representation according to the remote storage system of third embodiment of the invention;
Fig. 7 is the structural representation according to the remote storage system of four embodiment of the invention.
Embodiment
The first execution mode of the present invention relates to a kind of method of remote storage.Idiographic flow as shown in Figure 3.In the present embodiment, the server end of remote storage is stored the content of client in the NAS mode.
In step 301, start server end and client.This step belongs to the conventional means of this area, does not repeat them here.
Then, in step 302, the user asks the logon server end.Such as the user logins to the server end request by user name, user cipher.
Then, in step 303, whether the server end decision-making responds user's login.If response user's login then enters step 304; If do not respond user's login, then get back to step 302.Such as server end need to carry out authentication to this user according to this user's user name, user cipher after receiving user's logging request, if authentication is not passed through, will determine that then this does not respond this user's login, gets back to step 302; If authentication is passed through, then will respond user's login, enter step 304.
In step 304, client carry user disk.In the present embodiment, client can fictionalize disk with file system driver, with the content map of storing on the server end in this virtual disk.That is to say, for the user of client, be equivalent to realize remote storage in the mode of SAN.Therefore, in this step, comprised the virtual disk that is mapped with memory contents on the server end in the user disk of client carry.
Then, in step 305, when the user of client need to operate virtual disk, client was intercepted and captured the user to the operation requests of virtual disk in client before the request of arrival sector-level, and the operation requests of intercepting and capturing is transferred to server end, as shown in Figure 4.
Such as, the user of client is in the time need to operating the file in the virtual disk or catalogue, client can be utilized FUSE/Linux (the user's attitude file system under the Linux) from disk drive (Driver), perhaps from disk drive (Driver), utilize User Mode Driver/Windows (user model under the Windows drives), be transferred to server end after will intercepting and capturing the operation requests of virtual disk.
Then, in step 306, server end according to find from the operation requests of client this operation requests for file, and judge that this operation requests is whether within this user's authority.If judge that this operation requests within this user's authority, then enters step 307, if judge that this operation requests not within this user's authority, then enters step 308.
Specifically, in server end, set in advance each user's authority information, comprise the content that each user can operate separately, and/or can with the authority information of the content of other user's sharing operation.When server end is received operation requests from client, according to the authority information decision operation request that sets in advance whether within the user's of this client authority.If within the user's of this client authority, then enter step 307; If within the user's of this client authority, then do not enter step 308.Manage by the authority to the user, so that the user can exclusively enjoy file and catalogue, or share same or a plurality of files and catalogue with other users or customer group, and can enjoy identical or different mode of operation license at the file of sharing and catalogue.
In step 307, server end is to the client end response operation requests, i.e. server end response user is to the operation of file or catalogue.Because the user in the operation requests of client to file and catalogue, does not also arrive before the sector-level request, is is intercepted and captured by client.At this moment, the still file fragment of request is so transmission also is file fragment.And server end itself is stored the content of client in the NAS mode, therefore in the present embodiment server end to the response of the operation requests of client, identical to the response of the operation requests of client with server end among the existing NAS, do not repeat them here.And after server end returned to client to the result of request, client drove and returns the WINDOWS file system requests, had so just finished a file request operation.See that the user this is the same with the operation local file, as shown in Figure 5.
If in step 306, within the user's of this client authority, then in step 308, server end does not return miscue to client in the decision request.
Be not difficult to find that having formed in the present embodiment a kind of is SAN equipment (client is used former generating apparatus but not shared device, and system thinks it is this domain) in client, is the brand-new remote storage mode of NAS in service end.The user sees that in client file and catalogue are present in the user disk (local disc apparatus), and in service end, user's file and catalogue are also stored with original structure and the looks of file.Ideally solve the predicament of SAN and NAS separate, stored server, thereby for SAN memory module or NAS memory module, possessed following advantage:
(1) be the former generating apparatus of operating system in client, privacy is fine;
(2) transmission speed very fast (slightly being slower than SAN, faster than NAS);
What (3) store at server is bibliographic structure, is easy to backup.
(4) server end and client are done private data and Data sharing model together in fact, realize very quickly and easily individual character storage and total storage.
The second execution mode of the present invention relates to a kind of method of remote storage.The second execution mode improves on the basis of the first execution mode, and main improvements are:
In the first embodiment, in step 305, when the user of client need to operate virtual disk, client was intercepted and captured the user to the operation requests of virtual disk in client before the request of arrival sector-level, and directly the operation requests of intercepting and capturing was transferred to server end.
And in the present embodiment, the operation requests of intercepting and capturing need to be encrypted, obtain the operation requests of ciphertext form, and the operation requests of ciphertext form is transferred to server end.。That is to say that client is utilized FUSE/Linux from disk drive (Driver), perhaps User Mode Driver/Windows is converted to the encrypt file fragment with the disk access request and sends by network.Guaranteed that data form with ciphertext on network receives and dispatches safely, so that the confidentiality of the transmission of data is fabulous.
In addition, in the present embodiment, can also in server end, carry out buffer memory to the authority information that sets in advance, when needing the decision operation request whether within the user's of client authority, can be directly carry out this judgement according to the authority information of buffer memory, thereby effectively accelerated the service speed to the remote storage file.
In addition, the step that it will be understood by those skilled in the art that top the whole bag of tricks is divided, just in order to be described clearly, can merge into a step during realization or some step is split, be decomposed into a plurality of steps, as long as comprise identical logical relation, all in the protection range of this patent; To adding inessential modification in the algorithm or in the flow process or introduce inessential design, but the core design that does not change its algorithm and flow process is all in the protection range of this patent.
Third embodiment of the invention relates to a kind of remote storage system, as shown in Figure 6, comprises explanation module, transport module, safety management module, server file system module.
Wherein, server file system module and safety management module are arranged in server end.The server file system module is used in the NAS mode content of client being stored, and according to the operation requests from client, to the client end response operation requests.Safety management module is used for the decision operation request whether within the user's of client authority.Safety management module is when the decision request is within the user's of client authority, and indication server file system module is according to the operation requests from client, to the client end response operation requests; Safety management module is when the decision request is not within the authority the user of client, and indication server file system module is returned miscue to client.The content that safety management module can operate separately according to each user of setting in advance and/or can with the authority information of the content of other user's sharing operation, whether operation requests is judged within the user's of client authority.That is to say, safety management module can pass through the management to the user, group's management, the management of file permission, the management of session etc. mode, so that when multi-user operation identical file or catalogue, can with identical or different authority, realize individual operation and shared data.
Explanation module and transport module are arranged in client.The content map that explanation module is used for storing on the server end is to virtual disk, and when the user of client operates virtual disk, will intercept and capture before arriving the sector-level request the operation requests of this virtual disk.Transport module is used for the operation requests that explanation module is intercepted and captured is transferred to server end.That is to say that explanation module in fact is to have simulated a disk, and the File Mapping on the server end in this disk, the user to the operant response of these files to server end.Concerning the user, that it is explained is file and the authority result of server end, and concerning the server section, what it was explained is user's request.Can say that it is thereby that mock disc makes system that a good user interface be arranged.
Certainly, can also realize that the user uses the basic function structure of file by the file system response, for realizing centralized stores and making maintenance documentation just for convenient, realize that the user uses the file system response of the basic function structure of file to belong to the common practise of this area, does not repeat them here.
Be not difficult to find that present embodiment is the system embodiment corresponding with the first execution mode, present embodiment can with the enforcement of working in coordination of the first execution mode.The correlation technique details of mentioning in the first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in the present embodiment also can be applicable in the first execution mode.
It is worth mentioning that each involved in present embodiment module is logic module, in actual applications, a logical block can be a physical location, also can be the part of a physical location, can also realize with the combination of a plurality of physical locations.In addition, for outstanding innovation part of the present invention, will not introduce not too close unit with solving technical problem relation proposed by the invention in the present embodiment, but this does not show the unit that does not have other in the present embodiment.
Four embodiment of the invention relates to a kind of remote storage system.The 4th execution mode improves on the basis of the 3rd execution mode, and main improvements are:
In the 3rd execution mode, transport module directly has been transferred to server end with the operation requests that explanation module is intercepted and captured.And in four embodiment of the invention, transport module comprises following submodule:
Encrypt submodule, the operation requests that is used for intercepting and capturing is encrypted, and obtains the operation requests of ciphertext form;
The safe transmission submodule is used for the operation requests of ciphertext form is transferred to server end.
That is to say that data are to receive and dispatch safely with the form of ciphertext at network, therefore can be so that the confidentiality of the transmission of data be fabulous.
In addition, in the present embodiment, server end also comprises: cache module is used for the authority information that buffer memory sets in advance.Mutual by with cache module of safety management module obtains the authority information that sets in advance, as shown in Figure 7.
The respective embodiments described above are to realize specific embodiments of the invention, and in actual applications, can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (11)
1. the method for a remote storage is characterized in that, comprises following steps:
The content of client is stored in network attached storage NAS mode at server end, the content map of described server end being stored in client is in virtual disk; When the user of described client operates described virtual disk, will before arriving the sector-level request, intercept and capture the file of this virtual disk and the operation requests of catalogue, and the described operation requests that will intercept and capture is transferred to described server end; Described server end is to the described operation requests of described client end response.
2. the method for remote storage according to claim 1 is characterized in that, the described described operation requests that will intercept and capture is transferred in the step of described server end, comprises following substep:
The described operation requests of intercepting and capturing is encrypted, obtains the operation requests of ciphertext form;
The operation requests of described ciphertext form is transferred to described server end.
3. the method for remote storage according to claim 1 is characterized in that, before the described operation requests of described client end response, also comprises following steps at described server end:
Described server end judges that described operation requests is whether within the user's of described client authority; If judgement is within the user's of described client authority, then described server end is again to the described operation requests of described client end response; If judge that not then described server end returns miscue to described client within the user's of described client authority.
4. the method for remote storage according to claim 3, it is characterized in that described server end judges that in the following manner described operation requests is whether within the user's of the spouse of institute client authority: in described server end, set in advance content that each user can operate separately and/or can with the authority information of the content of other user's sharing operation; When needs judge that described operation requests is whether within the authority the user of described client, according to the described authority information that sets in advance, carry out described judgement.
5. the method for remote storage according to claim 4 is characterized in that, also comprises following steps:
In described server end, the described authority information that sets in advance is carried out buffer memory; When needs judge that described operation requests is whether within the authority the user of described client, according to the authority information of described buffer memory, carry out described judgement.
6. remote storage system, comprise server end and client, it is characterized in that, described Server Side Include: server file system module, be used in network attached storage NAS mode the content of client being stored, and according to the operation requests from described client, to the described operation requests of described client end response; Described client comprises: explanation module and transport module; The content map that described explanation module is used for storing on the described server end is to virtual disk, and when the user of described client operates described virtual disk, will before arriving the sector-level request, intercept and capture the file of this virtual disk and the operation requests of catalogue; Described transport module is used for the described operation requests that described explanation module is intercepted and captured is transferred to described server end.
7. remote storage system according to claim 6 is characterized in that, described transport module comprises following submodule:
Encrypt submodule, the described operation requests that is used for the seed intercepting and capturing is encrypted, and obtains the operation requests of ciphertext form;
The safe transmission submodule is used for the operation requests of described ciphertext form is transferred to described server end.
8. remote storage system according to claim 6 is characterized in that, described server end also comprises:
Safety management module is used for judging that described operation requests is whether within the user's of described client authority;
Described safety management module indicates described server file system module according to the operation requests from described client, to the described operation requests of described client end response when judging that described operation requests is within the user's of described client authority; Described safety management module indicates described server file system module to return miscue to described client when judging that described operation requests is not within the authority the user of described client.
9. remote storage system according to claim 8, it is characterized in that, the content that described safety management module can operate separately according to described each user who sets in advance and/or can with the authority information of the content of other user's sharing operation, whether described operation requests is judged within the user's of described client authority.
10. remote storage system according to claim 9 is characterized in that, described server end also comprises:
Cache module is used for the described authority information that sets in advance of buffer memory; Mutual by with described cache module of described safety management module obtains the described authority information that sets in advance.
11. a client,
It is characterized in that, client comprises: explanation module, the content map that is used for storing on the server end is to virtual disk, and when the user of described client operates described virtual disk, will before arriving the sector-level request, intercept and capture the file of this virtual disk and the operation requests of catalogue; And transport module, be used for the described operation requests that described explanation module is intercepted and captured is transferred to described server end; The content of client is stored in network attached storage NAS mode at server end, described server end is to the described operation requests of described client end response.
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JP2012243105A (en) * | 2011-05-19 | 2012-12-10 | Buffalo Inc | File management device and control program thereof |
CN103731462A (en) * | 2012-10-16 | 2014-04-16 | 中兴通讯股份有限公司 | Remote storage system and method of network attached storage (NAS) device |
CN103235905A (en) * | 2013-04-27 | 2013-08-07 | 成都菲普迪斯科技有限公司 | DUDP real-time data protection method |
CN103279308B (en) * | 2013-05-06 | 2016-04-06 | 深圳市深信服电子科技有限公司 | The caching method of remote application interface and device |
CN103731501A (en) * | 2014-01-13 | 2014-04-16 | 北京发现角科技有限公司 | Mobile-terminal-based multi-people cooperative management method and system for backlogs |
CN104537130A (en) * | 2015-01-30 | 2015-04-22 | 浪潮(北京)电子信息产业有限公司 | Method and system for realizing distributed cluster file management and clients |
CN105141581A (en) * | 2015-07-27 | 2015-12-09 | 浪潮(北京)电子信息产业有限公司 | Method and device for providing shared service |
CN106997274B (en) * | 2016-01-25 | 2021-04-30 | 中兴通讯股份有限公司 | Architecture and method for realizing storage space management |
CN106254434A (en) * | 2016-07-28 | 2016-12-21 | 武汉华星光电技术有限公司 | A kind of network attached storage apparatus and method for |
CN107463339B (en) * | 2017-08-17 | 2021-03-26 | 苏州浪潮智能科技有限公司 | NAS storage system |
CN107819841A (en) * | 2017-11-02 | 2018-03-20 | 郑州云海信息技术有限公司 | Dynamic resource allocation method, device, equipment and the storage medium shared based on NAS |
CN109977083B (en) * | 2019-03-27 | 2021-04-06 | 深圳市瑞云科技有限公司 | File transmission system based on file system hanging disc technology |
CN110321077B (en) * | 2019-06-17 | 2023-04-14 | 浩云科技股份有限公司 | Method and device for managing centrally stored files |
CN110677455B (en) * | 2019-08-20 | 2020-11-03 | 北京航空航天大学 | Dynamic balance account mapping method based on distributed hash |
CN111404793B (en) * | 2020-03-11 | 2022-01-21 | 超越科技股份有限公司 | Method, system, equipment and readable storage medium for controlling mapping of physical CAN port and virtual CAN port |
CN113190181A (en) * | 2021-05-28 | 2021-07-30 | 北京鼎普科技股份有限公司 | Virtual disk mounting method and system |
CN114594916B (en) * | 2022-03-19 | 2023-08-18 | 山西三叶虫信息技术股份有限公司 | Enterprise file storage management method and device, electronic equipment and storage medium |
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