CN102314503A - Indexing method - Google Patents
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- CN102314503A CN102314503A CN201110257530A CN201110257530A CN102314503A CN 102314503 A CN102314503 A CN 102314503A CN 201110257530 A CN201110257530 A CN 201110257530A CN 201110257530 A CN201110257530 A CN 201110257530A CN 102314503 A CN102314503 A CN 102314503A
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Abstract
The invention provides an indexing method, which relates to the technical field of computer application, and solves the problem that data indexing has poor reliability. The method comprises the steps as follows: three levels of index structures are constructed for a backup data, wherein the three levels of the index structures comprise a first-level index, a second-level index and a third-level index, the first-level index contains a corresponding second-level index address, the second-level index contains a corresponding third-level index address, and the third-level index contains a corresponding backup data address; a control server stores the first-level index; at least one backup media server stores the second-level index and the third-level index; the backup data and the three levels of the index structures are copied in a backend storage system. The technical proposal provided by the invention is suitable for a data storage system, and realizes the data indexing with high reliability.
Description
Technical field
The present invention relates to the Computer Applied Technology field, relate in particular to a kind of based on distributed indexing means.
Background technology
The requirement of the quick growth of data and the high availability of data, security has stimulated the development of data backup technology.Show according to enquiry data; In all kinds of disasters that the infosystem of enterprise possibly meet with; The probability that natural disaster takes place is merely 3%, is to occur in site-local and the loss of data above 95% is arranged, wherein; The 47%th, the fault of hardware-level; For example: mainboard, RAID controller, network interface card, built-in/facilities such as external storage go wrong, and also having the disaster origin cause of formation up to 53% is " soft " mistake, and for example: the deletion of data mistake, hacker/virus attack, system crash, patch installing cause instability or the like.
Along with infosystem progressively rises to the maincenter that enterprise production is moved, safe, the stable key that guarantees the enterprise production continuous service that becomes already of guarantee information system.In order to guarantee business data safety; Enterprise adopts traditional tape backup, for above-mentioned ' soft ', ' firmly ' disaster limited protection can only be provided all based on data protection mechanism such as the backup of disk, Cluster/HA, for the infosystem of enterprise is set up effective backup and disaster tolerance system.Should be used for seeing that from present enterprise the redundancy technique to data still is the main technology and the method for enterprise's reply data protection.
Index technology is the gordian technique that Backup Data is managed, and effectively index technology can guarantee the reliability and backup efficient of Backup Data.Traditional index technology is generally through set up the index to Backup Data in this locality, and through the relevant information of record data, when data are recovered, finding through index needs data recovered; Thereby time data protection; But this index general record in case the backup medium server breaks down, will cause index to lose on a certain backup medium server; Thereby cause backed up data to become invalid data, the data directory reliability is relatively poor.
Summary of the invention
The invention provides a kind of indexing means, solved the relatively poor problem of data directory reliability.
A kind of indexing means comprises:
For Backup Data makes up three grades of index structures; Said three grades of index structures comprise one-level index, secondary index and three grades of index; Said one-level index comprises corresponding secondary index address; Said secondary index comprises three grades of corresponding index addresses, and said three grades of index comprise corresponding Backup Data address;
Control Server is preserved said one-level index;
The said secondary index of at least one backup medium server for saving and said three grades of index;
Three grades of index structures of said Backup Data of backup and said Backup Data in the storage system of rear end.
Preferably, said one-level index comprises corresponding secondary index address, is specially:
Said one-level index comprises the address and the index address of said secondary index in this backup medium server of the secondary index place backup medium server of a backup tasks correspondence.
Preferably, said secondary index comprises three grades of corresponding index addresses, is specially:
Said secondary index comprises at least one listed files, and each listed files comprises the file HASH and the corresponding index address of three grades of index in said backup medium server of this document of this backup tasks institute backup file.
Preferably, said one-level index also comprises:
The task ID of this backup tasks, source IP, source path, backup path, start time and concluding time.
Preferably, said three grades of index also comprise:
The size of backup file, attribute and the key word relevant with said file content.
Preferably, said one-level index, secondary index, three grades of index and three grades of index structures are preserved with the mode of tar bag.
Preferably, above-mentioned indexing means also comprises:
When said Control Server and/or said at least one backup medium server failure; According in the storage system of said rear end to the backup of three grades of index structures, reduce one-level index and/or secondary index and the three grades of index on said at least one backup medium server on the said Control Server.
Preferably, the said said secondary index of at least one backup medium server for saving and said three grades of index are specially:
The said secondary index of two or more backup medium server for saving and said three grades of index.
Preferably, above-mentioned indexing means also comprises:
Carry out data when recovering at needs, synchronous query need be carried out the backup data index of restore data from said two or more backup medium servers.
The invention provides a kind of indexing means; For Backup Data makes up three grades of index structures, said three grades of index structures comprise one-level index, secondary index and three grades of index, and said one-level index comprises corresponding secondary index address; Said secondary index comprises three grades of corresponding index addresses; Said three grades of index comprise corresponding Backup Data address, and Control Server is preserved said one-level index, the said secondary index of at least one backup medium server for saving and said three grades of index; Three grades of index structures of said Backup Data of backup and said Backup Data in the storage system of rear end; Realized classification storage, when index is lost, can the index of losing have been recovered, solved the relatively poor problem of data directory reliability according to three grades of index structures of backup to index.
Description of drawings
Fig. 1 is the applied environment synoptic diagram of the embodiment of the invention;
The process flow diagram of a kind of indexing means that Fig. 2 provides for embodiments of the invention two;
Fig. 3 is the process flow diagram that three grades of index structures are set up;
Fig. 4 is the synoptic diagram of three grades of index structures.
Embodiment
Index technology is the gordian technique that Backup Data is managed, and effectively index technology can guarantee the reliability and backup efficient of Backup Data.Traditional index technology is generally through setting up the index to Backup Data in this locality; Through the relevant information of record data, when data are recovered, finding through index needs data recovered, thus the time data protection; But this index general record is on a certain backup medium server; In case the backup medium server breaks down, will cause index to lose, thereby cause backed up data to become invalid data.In addition, when backup tasks was many, concurrent visit was had higher requirement to the access efficiency of index.
Therefore, a kind of method need be provided, in the index design process of backup; A kind of index technology more reliably is provided, realize fault-tolerant more reliably, even the backup medium server breaks down; As long as Backup Data is not just lost and can be recovered backup tasks effectively and rapidly, thereby restore data.
In order to address the above problem, embodiments of the invention provide a kind of indexing means.Hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
At first, in conjunction with accompanying drawing embodiments of the invention one are described.
It is a kind of based on distributed index that the embodiment of the invention provides; In the index design process of backup; A kind of technology of distributed index more reliably is provided, realize fault-tolerant more reliably, even the backup medium server breaks down; As long as Backup Data is not just lost and can be recovered backup tasks effectively and rapidly, thereby restore data.
In a distributed index framework, comprise one-level index, secondary index, three grades of index and four parts of Backup Data, the information of one-level index record backup tasks wherein, secondary index writes down the information of each backup file, three grades of index.
Wherein, The execution information of the each backup tasks of one-level index essential record; Mainly comprise task ID, source IP, purpose IP, source path, backup path, secondary index address, start time and concluding time, backup tasks of every execution all can write down a new secondary index address.
Which file backup of the current backup tasks of the each backup tasks of secondary index essential record file index information, each index ID, the content indexing address of having write down HASH and this file of this subtask backup file.
The content key message of three grades of single files of index essential record, the convenient retrieval backup file information of using mainly comprises content indexing ID, data address and content.Wherein data address record Backup Data finally is kept at the address of disk, and content recorded has a plurality of keywords.
Backup Data comprises two parts: a part is index information, and a part is data, the information of its index information protection one-level index, secondary index, three grades of index.
When appearring in system, index information loses the information that effectively to recover one-level index, secondary index, three grades of index through Backup Data.
The indexing means that the embodiment of the invention provides under the prerequisite that guarantees the data reliability transmission, can be realized Network Transmission efficiently.Rebuild the Network Transmission expense that two aspects reduce remote copy from network data transmission and metadata, thereby significantly reduce the data of Network Transmission in the remote copy process, realize that simplifying of transmission is efficient.
Below in conjunction with accompanying drawing, embodiments of the invention two are described.
The applied environment of the embodiment of the invention is as shown in Figure 1, and general standby system is divided into backup agent, Control Server, backup medium server and rear end and stores four parts composition.The embodiment of the invention provides a kind of distributed three grades of index structures, and these three grades of index structures comprise one-level index, secondary index and three grades of index.Wherein the one-level index is kept on the Control Server, and secondary index and three grades of index are kept on the backup medium server, three grades of index structure unifications of Backup Data and backup is kept in the storage system of rear end backs up at last.
The indexing means that uses the embodiment of the invention to provide is as shown in Figure 2 to the flow process that Backup Data carries out index, comprising:
The process that whole three grades of index structures are set up is as shown in Figure 3; When Control Server is set up a backup tasks; Preserve task ID, source IP, purpose IP, source path, backup path, secondary index address, start time and the concluding time of this subtask through the one-level index; Wherein purpose IP is the address of backup medium server, and the address at this backup tasks file index of secondary index in media server is being write down in the secondary index address.
In secondary index, the corresponding task ID of each index ID has a plurality of listed files below the index ID, is writing down the file HASH and the content indexing address of current backup file respectively.The content indexing address is mainly the address of three grades of index.
In three grades of index, write down the address and the content information relevant of final Backup Data respectively with file; This content information has a plurality of; Such as size that can log file, attribute, key word that content is relevant or the like, the convenient application retrieved according to key word.
Three grades of index structures are specifically as shown in Figure 4.
In Backup Data, in order to guarantee the fault-tolerant of index, adopt the mode of tar bag to be kept on the memory device as the message file of file with backed up data one-level index, secondary index, three grades of index.
In this step, concrete, Control Server is preserved said one-level index, the said secondary index of at least one backup medium server for saving and said three grades of index, three grades of index structures of said Backup Data of backup and said Backup Data in the storage system of rear end.
Need to prove, generally speaking, the corresponding a plurality of three grades of index of secondary index, same secondary index generally is stored on the same backup medium server with its corresponding whole three grades of index, so that retrieval improves recall precision.
In this step, at first browse all task lists through the one-level index of Control Server.The listed files of each task backup reads secondary index information by Control Server to media server and obtains, and the details of this backup file, such as this file relevant attribute information, key content information three grades of index being arranged then is that content indexing reads.And this index information points to final backup data files, can select all or part of recovery.Thereby accomplish whole data recovery procedure.
Concrete; When said Control Server and/or said at least one backup medium server failure; According in the storage system of said rear end to the backup of three grades of index structures, reduce one-level index and/or secondary index and the three grades of index on said at least one backup medium server on the said Control Server;
In this step; When Control Server or backup medium server break down when causing the losing of one-level or secondary, three grades of index files; Can not rebuild one-level, secondary, three grades of index files through Backup Data as long as final backup file just damages, thereby the height of realizing index data is fault-tolerant.
Detection failure; Mainly be when reading index file; If can't normally read index file from disk, disk block promptly possibly occur and damage, perhaps Control Server and backup medium server break down; Promptly can not find corresponding firsts and seconds index file, this moment is as long as Backup Data just can rebuild one-level, secondary and three grades of index.Generally comprise following two kinds of situation:
Situation one: the Control Server fault, this moment, the one-level index was lost.Reinstall new Control Server, Control Server finds the one-level index information in the storage through the information of retrieval backup medium server, returns to the Control Server end.
Situation two: the backup medium server failure, this moment, secondary and three grades of index were lost.Reinstall the backup medium server, the backup medium server passes through again the Backup Data in the retrieve stored system, directly recovers secondary and three grades of index on the backup medium server.
When above-mentioned situation one takes place with situation two simultaneously; The recovery of the index file of storing on Control Server and the backup medium server is separate; After Control Server restarted or substitutes the former Control Server of fault with other Control Servers, new Control Server can obtain the one-level index automatically; In like manner, after the backup medium server restarted or substitutes the former backup medium server of fault with other backup medium servers, new backup medium server can obtain two, three grades of index automatically
And in normal use; Index file is distributed on the different backup medium servers; When system pressure bigger; Carry out the information that content retrieval and data can be searched secondary and three grades of index from a plurality of backup medium servers through distributed mode when recovering, thus the efficient inquiry of the system of realization.
The all or part of step that the one of ordinary skill in the art will appreciate that the foregoing description program circuit that can use a computer is realized; Said computer program can be stored in the computer-readable recording medium; Said computer program (like system, unit, device etc.) on the relevant hardware platform is carried out; When carrying out, comprise one of step or its combination of method embodiment.
Alternatively, all or part of step of the foregoing description also can use integrated circuit to realize, these steps can be made into integrated circuit modules one by one respectively, perhaps a plurality of modules in them or step is made into the single integrated circuit module and realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
Each device/functional module/functional unit in the foregoing description can adopt the general calculation device to realize, they can concentrate on the single calculation element, also can be distributed on the network that a plurality of calculation element forms.
Each device/functional module/functional unit in the foregoing description is realized with the form of software function module and during as independently production marketing or use, can be stored in the computer read/write memory medium.The above-mentioned computer read/write memory medium of mentioning can be a ROM (read-only memory), disk or CD etc.
Any technician who is familiar with the present technique field can expect changing or replacement in the technical scope that the present invention discloses easily, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the described protection domain of claim.
Claims (9)
1. an indexing means is characterized in that, comprising:
For Backup Data makes up three grades of index structures; Said three grades of index structures comprise one-level index, secondary index and three grades of index; Said one-level index comprises corresponding secondary index address; Said secondary index comprises three grades of corresponding index addresses, and said three grades of index comprise corresponding Backup Data address;
Control Server is preserved said one-level index;
The said secondary index of at least one backup medium server for saving and said three grades of index;
Three grades of index structures of said Backup Data of backup and said Backup Data in the storage system of rear end.
2. indexing means according to claim 1 is characterized in that, said one-level index comprises corresponding secondary index address, is specially:
Said one-level index comprises the address and the index address of said secondary index in this backup medium server of the secondary index place backup medium server of a backup tasks correspondence.
3. indexing means according to claim 2 is characterized in that, said secondary index comprises three grades of corresponding index addresses, is specially:
Said secondary index comprises at least one listed files, and each listed files comprises the file HASH and the corresponding index address of three grades of index in said backup medium server of this document of this backup tasks institute backup file.
4. indexing means according to claim 2 is characterized in that, said one-level index also comprises:
The task ID of this backup tasks, source IP, source path, backup path, start time and concluding time.
5. indexing means according to claim 3 is characterized in that, said three grades of index also comprise:
The size of backup file, attribute and the key word relevant with said file content.
6. indexing means according to claim 1, its structure be,
Said one-level index, secondary index, three grades of index and three grades of index structures are preserved with the mode of tar bag.
7. indexing means according to claim 1 is characterized in that, this method also comprises:
When said Control Server and/or said at least one backup medium server failure; According in the storage system of said rear end to the backup of three grades of index structures, reduce one-level index and/or secondary index and the three grades of index on said at least one backup medium server on the said Control Server.
8. indexing means according to claim 1 is characterized in that, the said said secondary index of at least one backup medium server for saving and said three grades of index are specially:
The said secondary index of two or more backup medium server for saving and said three grades of index.
9. indexing means according to claim 8 is characterized in that, this method also comprises:
Carry out data when recovering at needs, synchronous query need be carried out the backup data index of restore data from said two or more backup medium servers.
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| CN201110257530A CN102314503A (en) | 2011-09-01 | 2011-09-01 | Indexing method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779180A (en) * | 2012-06-29 | 2012-11-14 | 华为技术有限公司 | Operation processing method of data storage system and data storage system |
| CN104217011A (en) * | 2014-09-19 | 2014-12-17 | 浪潮(北京)电子信息产业有限公司 | Method and device for inquiring HBase secondary index table |
| CN105045684A (en) * | 2015-07-16 | 2015-11-11 | 北京京东尚科信息技术有限公司 | Method and device for switching and controlling indexes |
| CN105354109A (en) * | 2015-10-09 | 2016-02-24 | 浙江宇视科技有限公司 | Backup method and apparatus for video monitoring index data |
| CN106227618A (en) * | 2016-07-11 | 2016-12-14 | 腾讯科技（深圳）有限公司 | Data reconstruction method based on extension file system and device |
| CN108388569A (en) * | 2018-01-09 | 2018-08-10 | 杭州电子科技大学 | A kind of system and method for building up of quick key value database |
| CN108563697A (en) * | 2018-03-22 | 2018-09-21 | 腾讯科技（深圳）有限公司 | A kind of data processing method, device and storage medium |
| CN111090544A (en) * | 2018-10-24 | 2020-05-01 | 伊姆西Ip控股有限责任公司 | Method, apparatus and computer program product for managing virtual machines |
| CN111309471A (en) * | 2018-12-11 | 2020-06-19 | 迈普通信技术股份有限公司 | Data processing method and device and distributed system |
| CN111443867A (en) * | 2020-03-24 | 2020-07-24 | 腾讯科技（深圳）有限公司 | Data storage method, device, equipment and storage medium |
| CN111506570A (en) * | 2020-03-05 | 2020-08-07 | 百度在线网络技术（北京）有限公司 | Data storage and query method and device, electronic equipment and storage medium |
| CN112929677A (en) * | 2019-12-06 | 2021-06-08 | 北京金山云网络技术有限公司 | Live video playback method and device and server |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070043705A1 (en) * | 2005-08-18 | 2007-02-22 | Emc Corporation | Searchable backups |
| CN101425057A (en) * | 2007-10-31 | 2009-05-06 | 英业达股份有限公司 | English word enquiring system and method thereof |
| CN101599080A (en) * | 2009-07-22 | 2009-12-09 | 中国科学院计算技术研究所 | A kind of organization system of Backup Data and method |
| CN101662760A (en) * | 2009-07-31 | 2010-03-03 | 中兴通讯股份有限公司 | Method and system for backing up terminal data |
| CN102012851A (en) * | 2010-12-20 | 2011-04-13 | 浪潮(北京)电子信息产业有限公司 | Continuous data protection method and server |
-
2011
- 2011-09-01 CN CN201110257530A patent/CN102314503A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070043705A1 (en) * | 2005-08-18 | 2007-02-22 | Emc Corporation | Searchable backups |
| CN101425057A (en) * | 2007-10-31 | 2009-05-06 | 英业达股份有限公司 | English word enquiring system and method thereof |
| CN101599080A (en) * | 2009-07-22 | 2009-12-09 | 中国科学院计算技术研究所 | A kind of organization system of Backup Data and method |
| CN101662760A (en) * | 2009-07-31 | 2010-03-03 | 中兴通讯股份有限公司 | Method and system for backing up terminal data |
| CN102012851A (en) * | 2010-12-20 | 2011-04-13 | 浪潮(北京)电子信息产业有限公司 | Continuous data protection method and server |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779180A (en) * | 2012-06-29 | 2012-11-14 | 华为技术有限公司 | Operation processing method of data storage system and data storage system |
| CN104217011A (en) * | 2014-09-19 | 2014-12-17 | 浪潮(北京)电子信息产业有限公司 | Method and device for inquiring HBase secondary index table |
| CN104217011B (en) * | 2014-09-19 | 2017-08-25 | 浪潮(北京)电子信息产业有限公司 | The querying method and device of HBase secondary index tables |
| CN105045684A (en) * | 2015-07-16 | 2015-11-11 | 北京京东尚科信息技术有限公司 | Method and device for switching and controlling indexes |
| CN105045684B (en) * | 2015-07-16 | 2018-06-15 | 北京京东尚科信息技术有限公司 | Index switching and the method and device of index control |
| CN105354109B (en) * | 2015-10-09 | 2018-11-13 | 浙江宇视科技有限公司 | The backup method and device of video monitoring index data |
| CN105354109A (en) * | 2015-10-09 | 2016-02-24 | 浙江宇视科技有限公司 | Backup method and apparatus for video monitoring index data |
| CN106227618B (en) * | 2016-07-11 | 2019-01-29 | 腾讯科技（深圳）有限公司 | Data reconstruction method, device and storage medium based on extension file system |
| CN106227618A (en) * | 2016-07-11 | 2016-12-14 | 腾讯科技（深圳）有限公司 | Data reconstruction method based on extension file system and device |
| CN108388569A (en) * | 2018-01-09 | 2018-08-10 | 杭州电子科技大学 | A kind of system and method for building up of quick key value database |
| CN108388569B (en) * | 2018-01-09 | 2021-07-20 | 杭州电子科技大学 | System and establishing method for rapid key value database |
| CN108563697A (en) * | 2018-03-22 | 2018-09-21 | 腾讯科技（深圳）有限公司 | A kind of data processing method, device and storage medium |
| CN111090544A (en) * | 2018-10-24 | 2020-05-01 | 伊姆西Ip控股有限责任公司 | Method, apparatus and computer program product for managing virtual machines |
| CN111309471A (en) * | 2018-12-11 | 2020-06-19 | 迈普通信技术股份有限公司 | Data processing method and device and distributed system |
| CN111309471B (en) * | 2018-12-11 | 2024-02-09 | 迈普通信技术股份有限公司 | Data processing method, device and distributed system |
| CN112929677A (en) * | 2019-12-06 | 2021-06-08 | 北京金山云网络技术有限公司 | Live video playback method and device and server |
| CN112929677B (en) * | 2019-12-06 | 2023-02-28 | 北京金山云网络技术有限公司 | Live video playback method and device and server |
| CN111506570A (en) * | 2020-03-05 | 2020-08-07 | 百度在线网络技术（北京）有限公司 | Data storage and query method and device, electronic equipment and storage medium |
| CN111443867A (en) * | 2020-03-24 | 2020-07-24 | 腾讯科技（深圳）有限公司 | Data storage method, device, equipment and storage medium |
| CN111443867B (en) * | 2020-03-24 | 2021-08-03 | 腾讯科技（深圳）有限公司 | Data storage method, device, equipment and storage medium |
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Application publication date: 20120111 |