CN201726424U - Distributed storage system - Google Patents
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- CN201726424U CN201726424U CN2009202080293U CN200920208029U CN201726424U CN 201726424 U CN201726424 U CN 201726424U CN 2009202080293 U CN2009202080293 U CN 2009202080293U CN 200920208029 U CN200920208029 U CN 200920208029U CN 201726424 U CN201726424 U CN 201726424U
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Abstract
Disclosed are a distributed storage system and a method thereof. The distributed storage system comprises a client access interface, a management server, a file delete controller, metadata server clusters, data storage server clusters and database server clusters, wherein the client access interface is respectively connected with the server clusters, the management server is respectively connected with the metadata server clusters, the file delete controller is respectively connected with the data storage server clusters and the database server clusters, the metadata server clusters, the data storage server clusters and the database server clusters are connected mutually, and the metadata server clusters are respectively in pairwise connection with the data storage server clusters. The distributed storage system guarantees reliable backup and rapid operation of data, greatly improves overall performance, provides functions of perfect interface management software and data restoration, recovers data deleted within a certain time, and really realizes functions of automatic management.
Description
Technical field
The utility model relates to a kind of storage system and method, is specifically related to a kind of distributed memory system.
Background technology
Along with popularizing that Internet development and consumer wideband insert, some large-scale websites begin to provide data storage function for the personal user.Domestic consumer is as long as inserting the Internet just can be stored in the information such as digital photograph, data file of oneself in this type systematic, and the place that also can insert the Internet at any time arbitrarily obtains the fileinfo that has deposited in from this system.This system provides greatly easily simultaneously to domestic consumer, also the design of system is had higher requirement, and this system must support massive data files and carry out high speed and read and write and certain disaster tolerance ability arranged.Current professional storage products SAN, NAS etc. are higher owing to cost, and are not suitable for the application of the Internet.Therefore we need design the demand that more suitable distributed memory system comes supporting user.The current cloud computing epoch arrive, and are by software program that the technology of a distributed system of hundreds and thousands of PC servers compositions is feasible.
The utility model content
The purpose of this utility model provides a kind of distributed memory system, it is based on (SuSE) Linux OS, adopt TCP/IP network interconnection technology efficiently, hundreds of station servers are coupled together, form the distributed system that can support mass data storage of a unification.
The purpose of the utility model distributed memory system is achieved through the following technical solutions: a kind of distributed memory system comprises client-access interface, management server and file deletion controller; Also comprise meta data server cluster A, meta data server cluster B, data storage server cluster A, data storage server cluster B, database server cluster A and database server cluster B.
Described client-access interface is connected with meta data server cluster A, meta data server cluster B, data storage server cluster A and data storage server cluster B respectively; Described client-access interface comprises to be write interface, reads interface and delete interface.
Described management server is connected with meta data server cluster A and meta data server cluster B respectively; Described management server also comprises management database.
Described file deletion controller is connected with data storage server cluster A, data storage server cluster B and database server cluster B respectively.
Described meta data server cluster A and meta data server cluster B connect by Transmission Control Protocol, detect the other side's state mutually; Data storage server cluster A and data storage server cluster B interconnect by Transmission Control Protocol, mutually the backup file data; Database server cluster A and database server cluster B link to each other by Transmission Control Protocol, and data backup to database server cluster B from database server cluster A.
Described meta data server cluster A and meta data server cluster B are connected in twos with data storage server cluster A and data storage server cluster B respectively.
Described meta data server cluster A, meta data server cluster B are connected in twos with database server cluster A and database server cluster B respectively.
Above-mentioned distributed memory system, wherein, the server cluster that described meta data server cluster A, meta data server cluster B, data storage server cluster A and data storage server cluster B are made up of the server of one or more same types; Database server cluster A and database server cluster B are the database server clusters by the database servers group one-tenth of one or more same types.
Above-mentioned distributed memory system, wherein, described meta data server cluster B, data storage server cluster B and database server cluster B are respectively the data backup servers of meta data server cluster A, data storage server cluster A and database server cluster A.
Above-mentioned distributed memory system, wherein, described client-access interface adapts to the situation of the network at place and selects cluster A or cluster B to carry out the optimum visit automatically.
Above-mentioned distributed memory system, wherein, the information that described management server is collected whole system from meta data server records the management database, the control whole system.
Above-mentioned distributed memory system, wherein, described file deletion controller is regularly deleted expired data file, carries out the cleaning of data.
Use with the method for the utility model distributed memory system and comprise the method for write data, the method for read data, the method for deleted data, the method for the automatic reparation of data and the method for data migration.
The method of above-mentioned application and the utility model distributed memory system, wherein, the method for described write data may further comprise the steps at least:
Step 1, caller are called the interface of writing of client-access interface.
Step 2, the interface of writing of client-access interface attempt to connect optimum meta data server, if success then enter step 4, otherwise would enter step 3.
Step 3, the interface of writing of client-access interface attempts being connected the meta data server that another is equipped with mutually, if success then enter step 4, otherwise make mistakes, and jump to step 13.
Step 4, the client-access interface sends the instruction of creating file to meta data server, and the information such as size of data are sent to meta data server.
Step 5, meta data server spanned file name, and the fileinfo that will newly create deposits data-base cluster A in together with filename if make mistakes then jump to step 11, otherwise enters step 6.
Step 6, meta data server are picked out two servers and are carried out the storage of file from data storage server cluster A and data storage server cluster B, if can't pick out two-server, then jump to step 11, otherwise enter step 7.
Two data storage servers that step 7, meta data server are picked out, concurrent feed signals, two data storage servers that order is selected enter state to be written.
Step 8, meta data server return to the client success message, and data storage server tabulation and the new filename of creating are returned in the lump.
Step 9, the client-access interface is selected an optimum station server according to network condition from two data storage servers, file data is sent to the optimal data storage server, is called data storage server A, another table scale data storage server B down.
Step 10 after data storage server A receives file data, is saved in this locality with file, and sends the data to data storage server B, waits for data storage server B saving result.If data storage server A or data storage server B any one party are preserved the file failure, then enter 11, otherwise enter step 12.
Step 11 is returned the result that makes mistakes and is given the client-access interface, enters step 13.
Step 12 is returned correct result and is given the client-access interface, enters step 13.
Step 13, the client-access interface returns to caller with the result.
The method of above-mentioned application and the utility model distributed memory system, wherein, the method for described read data may further comprise the steps at least:
Step 1, caller are called the interface of reading of client-access interface.
Step 2, the interface of reading of client-access interface attempt to connect optimum meta data server, if success then enter step 4, otherwise would enter step 3.
Step 3, the interface of reading of client-access interface attempts being connected the meta data server that another is equipped with mutually, if success then enter step 4, otherwise make mistakes, and jump to step 11.
Step 4, the client-access interface sends the instruction of reading to meta data server, and the filename that will read file is sent to meta data server.
Step 5, meta data server are inquired about the metamessage of the filename of the file that will read from database server, if there is the then data storage server tabulation at backspace file place in data, give the client-access interface otherwise return error message.
Step 6 if the result that meta data server returns shows wrong the generation, then jumps to step 9.Otherwise carry out step 7.
Select the data access that carries out of an optimum the data storage server tabulation that step 7, client-access interface are returned from meta data server,, otherwise enter step 8 if visit successfully then enter step 10.
Step 8, client-access interface select another data storage server to carry out data access, if visit successfully then enter step 10, otherwise enter step 9.
Step 9 is returned the result that makes mistakes and is given the client-access interface, enters step 11.
Step 10 is returned correct result and is given the client-access interface, enters step 11.
Step 11, the client-access interface returns to caller with the result.
The method of above-mentioned application and the utility model distributed memory system, wherein, the method for described deleted data may further comprise the steps at least:
Step 1, caller are called the delete interface of client-access interface.
Step 2, the delete interface of client-access interface attempt connecting optimum meta data server, if success then enter step 4, otherwise would enter step 3.
Step 3, the delete interface of client-access interface attempts being connected the meta data server that another is equipped with mutually, if success then enter step 4, otherwise make mistakes, and jump to step 6.
Step 4, the client-access interface sends the instruction of deleting to meta data server, and the filename of want deleted file is sent to meta data server.
Step 5, meta data server are inquired about the metamessage of the filename of the file that will delete from database server, and the file that will delete is deleted, and the result is returned to the client-access interface.
Step 6, the client-access interface will call the result and return to caller.
The method of above-mentioned application and the utility model distributed memory system, wherein, the method that described data are repaired automatically may further comprise the steps at least:
Step 1, data storage server is found corrupted data, sends out message and gives meta data server.
Step 2, meta data server are picked out a data storage server to be written, send out message to the data storage server of selecting to be written, and the data storage server of selecting to be written is set to state to be written.
Step 3, meta data server find out the data storage server at another piece of data place of corrupt data, send out information order to the data storage server at another piece of data place, and specific data is sent to data storage server to be written.
Step 4, data storage server to be written receives data, writes disk, and the result is returned to the transmit leg data storage server.
Step 5 after the transmit leg data storage server receives the result, is passed the result back meta data server, and flow process finishes.
The method of above-mentioned application and the utility model distributed memory system, wherein, the method for described data migration may further comprise the steps at least:
Step 1, the keeper initiatively sends the migration instruction to a metadata store server by management server, moves all data on certain data storage server.
Step 2, meta data server find out all fileinfos of storing at data storage server to be migrated from database server.
Step 3, meta data server are followed successively by file to be migrated and pick out a new data storage server, and order former data storage server that data are sent on the new storage server.
Step 4, meta data server disposes All Files, and the migration flow process finishes.
The utility model distributed memory system makes it compared with prior art owing to adopted such scheme, has following advantage and good effect:
1, the utility model distributed memory system is owing to adopted meta data server cluster B, data storage server cluster B and database server cluster B, guaranteed the need for reliable backup of data, when having guaranteed to have part server to damage, the user is to operations such as data write migration rapidly.
2, the utility model distributed memory system is owing to adopt advanced message based network programming model, and storage has adopted partly efficiently that AIO (asynchronous IO) reads and writes file, and the overall performance of system promotes greatly, has improved the utilance of disk.
3, the utility model distributed memory system is owing to provide perfect interface management software, and the utility model also provides the function that data are recovered in addition, and the data that reach deletion can also be recovered within a certain period of time, have really realized the function of automatic management.
Description of drawings
Accompanying drawing 1 is the utility model distributed memory system network architecture module map.
Accompanying drawing 2 is flow charts of method of the write data of the utility model distributed memory system.
Accompanying drawing 3 is flow charts of method of the read data of the utility model distributed memory system.
Accompanying drawing 4 is flow charts of method of the deleted data of the utility model distributed memory system.
Accompanying drawing 5 is flow charts of method of automatic reparation of the data of the utility model distributed memory system.
Accompanying drawing 6 is flow charts of method of the data migration of the utility model distributed memory system.
Embodiment
See also shown in the accompanying drawing 1, the utility model distributed memory system comprises client-access interface 1, management server 2 and file deletion controller 3; Also comprise meta data server cluster A, meta data server cluster B, data storage server cluster A, data storage server cluster B, database server cluster A and database server cluster B.The server of all cluster A and cluster B all can be deployed in two machine rooms, to reach the purpose that the two-shipper room backs up mutually.If condition does not allow, also it can be deployed in a machine room in the actual deployment, when a machine room lost efficacy, another machine room still can provide main service, reaches the purpose of machine room data redundancy with this.
Meta data server cluster A, meta data server cluster B, data storage server cluster A, data storage server cluster B, database server cluster A and database server cluster B all have active and standby mechanism, when any one party in this system lost efficacy, client-access interface 1 all can switch to the opposing party rapidly and conduct interviews, and the process of haveing suffered is transparent to the upper strata.When number formulary certificate was damaged, system can detect automatically, and initiated the migration flow process, kept many redundancies of data.A or B have shown that this two classes server cluster backups mutually.
The client-access interface is connected with meta data server cluster A, meta data server cluster B, data storage server cluster A and data storage server cluster B respectively; Client-access interface 1 comprises to be write interface, reads interface and delete interface, can follow according to the situation of its place network during by client-access interface 1 visit native system and select cluster A or cluster B to conduct interviews automatically, has reached the purpose of optimum visit.
Management server 2 is connected with meta data server cluster A and meta data server cluster B respectively; Management server 2 also comprises management database, is used for detecting the state that meta data server reaches the database server that is connected with meta data server.If abnormal conditions (losing efficacy as server), management server 2 can send warning message to the keeper.Management server 2 is responsible for collecting from meta data server the information of whole system, and records in the management database.The keeper also can control whole system by management server 2.
File deletion controller 3 is connected with data storage server cluster A, data storage server cluster B and database server cluster B respectively, and file deletion controller is responsible for the regularly expired data file of deletion, is used for carrying out the cleaning of data.
Meta data server cluster A and meta data server cluster B connect by Transmission Control Protocol, detect the other side's state mutually; Data storage server cluster A and data storage server cluster B interconnect by Transmission Control Protocol, mutually the backup file data; Database server cluster A and database server cluster B link to each other by Transmission Control Protocol, and data backup to database server cluster B from database server cluster A.
Meta data server cluster A and meta data server cluster B are connected in twos with data storage server cluster A and data storage server cluster B respectively, the state of meta data server meeting supervising data storage server, if data storage server lost efficacy, then meta data server can be rejected it from freelist; If data storage server recovers, then meta data server can add freelist with it again.
Meta data server cluster A, meta data server cluster B are connected with data storage server cluster A respectively, are used for writing metadata (node) information that reads storage file; Meta data server cluster A, meta data server cluster B are connected with data storage server cluster B respectively, and when database server cluster A lost efficacy, database server cluster B provided data access function for meta data server.
The server cluster that meta data server cluster A, meta data server cluster B, data storage server cluster A and data storage server cluster B are made up of the server of one or more same types; Database server cluster A and database server cluster B are the database server clusters by the database servers group one-tenth of one or more same types; Described meta data server cluster B, data storage server cluster B and database server cluster B are respectively the data backup servers of meta data server cluster A, data storage server cluster A and database server cluster A.Database server cluster A and database server cluster B have preserved the metadata information of data file, information such as position as file size, creation-time, place data storage server, database server cluster B is the backup server of database server cluster A, and database server cluster B provided service for meta data server when database server cluster A loses efficacy.
The database server cluster of the utility model distributed memory system is mainly used to store the metamessage of data, and the data list structure design is as follows:
The filename field is by the unique filename of system of meta data server generation.
Data storage server 1 field, first data storage server title at file place.
Data storage server 1 document location field, the position of file on first data storage server.
Whether data storage server 1 available fields, shows whether this document is available on first data storage server.Data storage server 2 fields, second data Storage Server Name at file place.
Data storage server 2 document location fields, the position of file on second data storage server.
Whether data storage server 2 available fields, shows whether this document is available on second data storage server.
File size field has shown the size of file data.
File type field has shown the type of file data, as picture file, general data file etc.
The file verification information field is used for verifying whether current file has damage.
Document creation time field has shown the creation-time of file.
The utility model distributed memory system comprises the method for the data migration of method that the data of method, distributed memory system of deleted data of method, distributed memory system of read data of method, the distributed memory system of the write data of distributed memory system are repaired automatically and distributed memory system.
See also shown in the accompanying drawing 2, accompanying drawing 2 is the flow charts of method of write data that are applied to the method for the utility model distributed memory system, comprises the steps:
Step 1, caller are called the interface of writing of client-access interface.
Step 2, the interface of writing of client-access interface attempt to connect optimum meta data server, if success then enter step 4, otherwise would enter step 3.
Step 3, the interface of writing of client-access interface attempts being connected the meta data server that another is equipped with mutually, if success then enter step 4, otherwise make mistakes, and jump to step 13.
Step 4, the client-access interface sends the instruction of creating file to meta data server, and the information such as size of data are sent to meta data server.
Step 5, meta data server spanned file name, and the fileinfo that will newly create deposits data-base cluster A in together with filename if make mistakes then jump to step 11, otherwise enters step 6.
Step 6, meta data server are picked out two servers and are carried out the storage of file from data storage server cluster A and data storage server cluster B, if can't pick out two-server, then jump to step 11, otherwise enter step 7.
Two data storage servers that step 7, meta data server are picked out, concurrent feed signals, two data storage servers that order is picked out enter state to be written.
Step 8, meta data server return to the client success message, and data storage server tabulation and the new filename of creating are returned in the lump.
Step 9, the client-access interface is selected an optimum station server according to network condition from two data storage servers, file data is sent to the optimal data storage server, is called data storage server A, another table scale data storage server B down.
Step 10 after data storage server A receives file data, is saved in this locality with file, and sends the data to data storage server B, waits for data storage server B saving result.If data storage server A or data storage server B any one party are preserved the file failure, then enter 11, otherwise enter step 12.
Step 11 is returned the result that makes mistakes and is given the client-access interface, enters step 13.
Step 12 is returned correct result and is given the client-access interface, enters step 13.
Step 13, the client-access interface returns to caller with the result.
See also shown in the accompanying drawing 3, accompanying drawing 3 is the flow charts of method of read data that are applied to the method for the utility model distributed memory system, comprises the steps:
Step 1, caller are called the interface of reading of client-access interface.
Step 2, the interface of reading of client-access interface attempt to connect optimum meta data server, if success then enter step 4, otherwise would enter step 3.
Step 3, the interface of reading of client-access interface attempts being connected the meta data server that another is equipped with mutually, if success then enter step 4, otherwise make mistakes, and jump to step 11.
Step 4, the client-access interface sends the instruction of reading to meta data server, and the filename that will read file is sent to meta data server.
Step 5, meta data server are inquired about the metamessage of the filename of the file that will read from database server, if there is the then data storage server tabulation at backspace file place in data, give the client-access interface otherwise return error message.
Step 6 if the result that meta data server returns shows wrong the generation, then jumps to step 9.Otherwise carry out step 7.
Select the data access that carries out of an optimum the data storage server tabulation that step 7, client-access interface are returned from meta data server,, otherwise enter step 8 if visit successfully then enter step 10.
Step 8, client-access interface select another data storage server to carry out data access, if visit successfully then enter step 10, otherwise enter step 9.
Step 9 is returned the result that makes mistakes and is given the client-access interface, enters step 11.
Step 10 is returned correct result and is given the client-access interface, enters step 11.
Step 11, the client-access interface returns to caller with the result.
See also shown in the accompanying drawing 4, accompanying drawing 4 is the flow charts of method of deleted data that are applied to the method for the utility model distributed memory system, comprises the steps:
Step 1, caller are called the delete interface of client-access interface.
Step 2, the delete interface of client-access interface attempt connecting optimum meta data server, if success then enter step 4, otherwise would enter step 3.
Step 3, the delete interface of client-access interface attempts being connected the meta data server that another is equipped with mutually, if success then enter step 4, otherwise make mistakes, and jump to step 6.
Step 4, the client-access interface sends the instruction of deleting to meta data server, and the filename of want deleted file is sent to meta data server.
Step 5, meta data server are inquired about the metamessage of the filename of the file that will delete from database server, and the file that will delete is deleted, and the result is returned to the client-access interface.
Step 6, the client-access interface will call the result and return to caller.
See also shown in the accompanying drawing 5, accompanying drawing 5 is the flow charts of method of automatic reparation of data that are applied to the method for the utility model distributed memory system, comprises the steps:
Step 1, data storage server is found corrupted data, sends out message and gives meta data server.
Step 2, meta data server are picked out a data storage server to be written, send out message to the data storage server of selecting to be written, and the data storage server of selecting to be written is set to state to be written.
Step 3, meta data server find out the data storage server at another piece of data place of corrupt data, send out information order to the data storage server at another piece of data place, and specific data is sent to data storage server to be written.
Step 4, data storage server to be written receives data, writes disk, and the result is returned to the transmit leg data storage server.
Step 5 after the transmit leg data storage server receives the result, is passed the result back meta data server, and flow process finishes.
See also shown in the accompanying drawing 6, accompanying drawing 6 is the flow charts of method of data migrations that are applied to the method for the utility model distributed memory system, comprises the steps:
Step 1, the keeper initiatively sends the migration instruction to a metadata store server by management server, moves all data on certain data storage server.
Step 2, meta data server find out all fileinfos of storing at data storage server to be migrated from database server.
Step 3, meta data server are followed successively by file to be migrated and pick out a new data storage server, and order former data storage server that data are sent on the new storage server.
Step 4, meta data server disposes All Files, and the migration flow process finishes.
The demand of the utility model distributed memory system is as follows: need exploitation distributed network framework, hundreds of machines are formed a unified distributed memory system; The file storage amount that it is 80KB that this system can hold 3,000 ten thousand mean sizes every day at least; Many parts of redundancies of the data of storing in this system, when a corrupted data, system's energy Auto-Sensing is also repaired; Multimachine room redundancy strategy is taked in the deployment of machine, and when a machine room broke down, whole system still can externally provide main service; Need there be stronger extensibility in system, when system can't the supporting user mass data storage, can simply improve the load capacity of whole cluster at management end by the method that increases machine quantity; User-friendly deployment and hypervisor are provided, allow also light management system of amateur occurrences in human life, to realize the management automation of whole system.
In sum, the utility model distributed memory system is owing to adopted meta data server cluster B, data storage server cluster B and database server cluster B, guaranteed the need for reliable backup of data, when having guaranteed to have part server to damage, the user is to operations such as data write migration rapidly; The utility model is owing to adopt advanced message based network programming model, and storage has adopted partly efficiently that AIO (asynchronous IO) reads and writes file, and the overall performance of system promotes greatly, has improved the utilance of disk; The utility model is owing to provide perfect interface management software, and the utility model also provides the function that data are recovered in addition, and the data that reach deletion can also be recovered within a certain period of time, have really realized the function of automatic management.
Claims (3)
1. a distributed memory system comprises client-access interface, management server and file deletion controller; It is characterized in that: also comprise meta data server cluster A, meta data server cluster B, data storage server cluster A, data storage server cluster B, database server cluster A and database server cluster B;
Described client-access interface is connected with meta data server cluster A, meta data server cluster B, data storage server cluster A and data storage server cluster B respectively; Described client-access interface comprises to be write interface, reads interface and delete interface;
Described management server is connected with meta data server cluster A and meta data server cluster B respectively; Described management server also comprises management database;
Described file deletion controller is connected with data storage server cluster A, data storage server cluster B and database server cluster B respectively;
Described meta data server cluster A and meta data server cluster B connect by Transmission Control Protocol, detect the other side's state mutually; Data storage server cluster A and data storage server cluster B interconnect by Transmission Control Protocol, mutually the backup file data; Database server cluster A and database server cluster B link to each other by Transmission Control Protocol, and data backup to database server cluster B from database server cluster A;
Described meta data server cluster A and meta data server cluster B are connected in twos with data storage server cluster A and data storage server cluster B respectively;
Described meta data server cluster A, meta data server cluster B are connected in twos with database server cluster A and database server cluster B respectively.
2. distributed memory system according to claim 1 is characterized in that: the server cluster that described meta data server cluster A, meta data server cluster B, data storage server cluster A and data storage server cluster B are made up of the server of one or more same types; Database server cluster A and database server cluster B are the database server clusters by the database servers group one-tenth of one or more same types.
3. distributed memory system according to claim 1 is characterized in that: described meta data server cluster B, data storage server cluster B and database server cluster B are respectively the data backup servers of meta data server cluster A, data storage server cluster A and database server cluster A.
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| CN101997884A (en) * | 2009-08-18 | 2011-03-30 | 升东网络科技发展(上海)有限公司 | Distributed storage system and method |
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- 2009-08-18 CN CN2009202080293U patent/CN201726424U/en not_active Expired - Lifetime
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| CN101997884A (en) * | 2009-08-18 | 2011-03-30 | 升东网络科技发展(上海)有限公司 | Distributed storage system and method |
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