CN101471948A - Storage LAN server capable of in-parallel processing and rapidly fetching, and access method thereof - Google Patents
Storage LAN server capable of in-parallel processing and rapidly fetching, and access method thereof Download PDFInfo
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- CN101471948A CN101471948A CNA2007101606856A CN200710160685A CN101471948A CN 101471948 A CN101471948 A CN 101471948A CN A2007101606856 A CNA2007101606856 A CN A2007101606856A CN 200710160685 A CN200710160685 A CN 200710160685A CN 101471948 A CN101471948 A CN 101471948A
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Abstract
The invention relates to a storage local area network server processed and cached in parallel and an access method thereof. A plurality of request ends are provided through data in the storage local area network cache server. An entity storage device, a replication management unit and a data management unit are included in the server; the entity storage device is used for storing data transmitted by the request ends and data transmitted to the request ends; the replication management unit is used for managing the entity storage device connected with the server, and a cache unit used for temporarily storing the data stored in the entity storage device in the cache unit; and the data management unit is used for recording the index value of the data in the cache unit, providing a cache copy stored in the cache unit for the corresponding request ends, and determining the access time of the cache copy stored in each virtual device management unit.
Description
Technical field
The present invention relates to a kind of storage LAN server and access method thereof, particularly a kind of storage LAN server and access method thereof with parallel processing and rapidly fetching.
Background technology
Enterprise is when construction internal reservoir network; usually can select directly to connect and store (Direct AccessStorage; abbreviation DAS), network-attached storage (Network Attached Storage; be called for short NAS) arrange in pairs or groups mutually with the solution of storage data with storage LAN (Storage Area Network is hereinafter to be referred as SAN).
Wherein, SAN is from independent another network that becomes of LAN with many storage devices.The characteristic of SAN is to realize that the high speed of multi-to-multi between server and entity storage device is connected.SAN adopts fiber channel (Fibre Channel) and server to link more, and its connected mode reconnects fibre switch for after installing fiber channel card (FCHBA) in the server, is connected to entity storage device at last again.
The data transfer mode of SAN adopts block (block) level, and the mode to manage concentratedly.Because data are to be stored in the logical unit number (Logic unit number is hereinafter to be referred as LUN), and come the access of keyholed back plate data by lock management person (Lock Manager).So, need just can carry out the access of file by server if desire these data of access.Such practice can avoid same file by the read-write with the time, to reduce the version of different files.
For accelerating to read the speed of file data, can in server, utilize the mode of getting storage (cache) soon to reduce to entity storage device read-write number of times from server.Storing the partial document data in the entity storage facilities in the high-speed cache, it is called gets copy soon.Though it is less to get the formation scale of storage soon, its access speed is very fast.Please refer to shown in Figure 1ly, it is the flow chart of high-speed cache read-write.The request end proposes the request (step S110) of access data to server-side.From search high-speed cache, whether have and get copy (step S120) accordingly soon.Judge whether to store in the high-speed cache and get copy (step S130) soon.If store in the high-speed cache and get copy soon, from high-speed cache, read and get copy soon to request end (step S131).If do not store in the high-speed cache and get copy soon, then server-side is searched these data (step S132) to entity storage device.
Because the access speed of high-speed cache is faster more than the access speed of entity storage device, so can accelerate searching speed.But the above-described storing mode of getting soon only can provide single request of data.If different request ends propose the access request to same data, then server-side will be got copy soon and offer each request end.But server-side but can't be judged the write sequence of each request end to these data.So server-side will produce the problem that data override.So, make server-side and can't effectively utilizing get storing technology soon and accelerate access speed entity storage device.
Summary of the invention
In view of above problem, main purpose of the present invention is to provide a kind of storage LAN server with parallel processing and rapidly fetching, provides several request ends by storing the data in the LAN access server.
For achieving the above object, include in the disclosed a kind of storage LAN server with parallel processing and rapidly fetching of the present invention: entity storage device, send administrative unit, replication management unit, cache element and Data Management Unit.Entity storage device in order to the data of the transmission of store request end with send the data that the request end desires to read to; Send administrative unit in order to the extremely corresponding entity storage device of the access request of sending the request end; The replication management unit more includes in each replication management unit: cache element and Data Management Unit in order to the entity storage device that management server linked.Cache element is temporary in the cache element in order to the data with the access of entity storage device institute; Data Management Unit is stored in one in the cache element in order to the index value and providing of data in the record cache element and gets copy soon to corresponding request end and in order to confirm the access time of getting copy soon of each virtual bench administrative unit institute access.
From another viewpoint of the present invention, the present invention proposes a kind of access method of parallel processing and rapidly fetching, provides several request ends by the data in the server-side that stores the LAN access.
For achieving the above object, the access method of the disclosed a kind of parallel processing and rapidly fetching of the present invention comprises the following steps: to be provided with the replication management unit in server, more includes cache element in the replication management unit; Search the data in several entity storage devices that connected by the replication management unit; According to the data that found out, it is stored into several caching datas to the high speed buffer unit; Give the cache element that stores corresponding each virtual bench administrative unit the caching data of unusual fluctuation synchronously.
The invention provides storage LAN server and access method thereof with parallel processing and rapidly fetching.A plurality of replication managements unit is set in server-side, and in each replication management unit, provides independently high-speed cache.And provide the management that writes of getting copy soon of caching data scheduling and each request end institute access between the replication management unit.Make server-side can offer each corresponding caching data in different request ends, and can not be written between each caching data.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the flow chart of prior art high-speed cache read-write;
Fig. 2 is a configuration diagram of the present invention;
Fig. 3 is operation workflow figure of the present invention;
Fig. 4 sends a read request flow table for the replication management unit;
Fig. 5 a is that the replication management unit sends the replication management unit and writes the request flow table;
Fig. 5 b is that the replication management unit sends the replication management unit and writes the request flow table.
Wherein, Reference numeral
200 have the storage LAN server of parallel processing and rapidly fetching
210 entity storage devices
220 replication management unit
230 send administrative unit
240 cache element
250 Data Management Unit
Embodiment
Please refer to shown in Figure 2ly, it is a configuration diagram of the present invention.Include in the storage LAN server 200 with parallel processing and rapidly fetching of the present invention (hereinafter to be referred as storing the LAN server): entity storage device 210 and replication management unit 220.In each replication management unit 220, also include: send administrative unit 230, cache element 240 and Data Management Unit 250.
Send administrative unit 230 in order to extremely corresponding entity storage device 210 of the access request of sending the request end or Data Management Unit 250.Cache element 240 is temporary in the cache element 240 in order to the data with 210 accesses of entity storage device.Data Management Unit 250 is in order to the index value of data in the record cache element 240, and provides and be stored in one in the cache element 240 and get copy soon to corresponding request end.Wherein, index value is in order to the response message as retrieval.For instance, when finding out corresponding data in the cache element 240, then write down the number of times of being searched at index value.If when cache element 240 was searched less than corresponding data, then index value can be set as-1, is not hit in order to represent this cache element 240.
Getting copy soon is the data that are stored in the cache element 240.In addition, Data Management Unit 250 is also in order to confirm the access time of getting copy soon of each virtual bench administrative unit institute access.
Please refer to shown in Figure 3ly, it is operation workflow figure of the present invention.Operation workflow of the present invention please refer to shown in the following step: replication management unit (step S310) is set in server, also includes cache element in replication management unit 220.Then, search data (step S320) in several entity storage devices that connected by the replication management unit
According to the data that found out, the data storing that is found out is become several caching datas (step S330) to the high speed buffer unit.Search the index value of data in the cache element by the replication management unit, get copy (step S340) soon in order to judge whether to store in the cache element, it is by sending administrative unit 230 in order to assign a replication management unit 220.Utilize the mode of getting map (cache mapping) soon, will be being given the cache element 240 that stores corresponding each replication management unit 220 synchronously by the caching data of unusual fluctuation.
If when in internal storage location, not hitting the data that (hit) desire to search, search corresponding data in the cache element 240 from other replication management unit 220.If do not hit in the cache element 240 in other replication management unit 220 yet desire to search data the time, then from entity storage device 210, search corresponding data.Can reduce access times like this to entity storage device 210.At last, give the cache element (step S350) that stores corresponding each virtual bench administrative unit the caching data of unusual fluctuation synchronously.
For the clearer explanation of energy operation of the present invention, so Data Management Unit 250 utilizes following cache stores form to carry out the data access control in the present embodiment, the cache stores form please refer to shown in the table 1.
| Index value index | Data storing address D ata address | Size of data Data size | Operational order Operate | The effective flag Valid flag of data |
Table 1. cache stores form
What this mark of operational order was represented is the corresponding actions of the data in this high-speed cache address of access.Whether the data content in this high-speed cache address of the effective flag of data (valid flag) mark is effective.For instance, if a data block in the renewal entity storage device 210, but not renewal of the data in the high-speed cache in the corresponding replication management unit 220, then the data block contents in entity storage device 210 is invalid.
Please refer to shown in the table 2, it is for getting the access record form soon.
| Index value index | Replication management element number Copy manager label | Data storing address D ata address | Size of data Data size | Data interlock flag Locked |
Watch 2. is got the access record form soon
A. the replication management unit is sent read-only (read only) request:
Please refer to shown in Figure 4ly, it sends a read request flow table for the replication management unit.At first, assign a replication management unit by sending administrative unit 230.Search in the cache element 240 under the replication management unit of being assigned 220 and whether store the data of desiring access to some extent.If find and get copy soon accordingly, check that this gets copy soon and whether be updated.If this is got copy soon and has been updated, then will get copy soon and reply to request end (step S410).If search, then check the data whether access that storage is desired is arranged in the cache element 240 under other the replication management unit 220 less than accordingly getting copy soon.
If in other the cache element 240 of replication management unit 220, find this data, then send administrative unit 230 access request is diverted to new replication management unit 220 (step S420).If in other the cache element 240 of replication management unit 220, also search, then in entity storage device 210, search this data (step S430), and getting access record format record content corresponding soon less than these data.
B. the replication management unit is sent the request of writing:
Please refer to shown in Fig. 5 a and Fig. 5 b, it is the replication management unit and the replication management unit is sent writes the request flow table.
Search in the cache element 240 under the replication management unit of being assigned 220 and whether store the data of desiring access to some extent.Check whether its locking flag state of getting the access record form soon is true.When if locking flag state is false, check that this gets copy soon and whether be updated.If this one gets copy soon and be updated, then duplicate a current replication management unit 220 contents as the new copy of getting soon, and give the request end its passback.The state (step S510) of record data locking flag in getting the access record form soon.
Have this data in any replication management unit 220 if search, then from entity storage device 210, search less than having.And check the lock-out state flag of getting soon in the record format, whether other request end institute requirement is arranged in order to confirm these data.If the lock-out state flag when being false, reads from entity storage device 210 in the high-speed cache of corresponding qualifications and record of service under the replication management unit 220.And in getting the access record form soon the state of each flag, the content of duplicating in the current replication management unit 220 returns to request end (step S520) as getting copy soon.If the lock-out state flag is true time, the wait information that returns is given the request end, one gets copy soon and is just used (step S530) by other replication management unit 220 in order to inform this.
The invention provides storage LAN server and access method thereof with parallel processing and rapidly fetching.A plurality of replication managements unit 220 is set in server-side, and in each replication management unit 220, provides independently high-speed cache.And provide the caching data scheduling of 220 of replication management unit and the management that writes of getting copy soon of each request end institute access.Make server-side can offer each corresponding caching data in different request ends, and can not be written between each caching data.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (7)
1, a kind of storage LAN server with parallel processing and rapidly fetching provides several request ends by storing the data in the LAN access server, it is characterized in that, includes in this server:
Several entity storage devices in order to the data of the transmission that stores those request ends, and send the data that those request ends desire to read to; And
Several replication management unit in order to manage those entity storage devices that this server links, also include in each this replication management unit:
One sends administrative unit, in order to extremely corresponding those entity storage devices of the access request of sending those request ends;
One cache element is temporary in this cache element in order to the data with this entity storage device institute access; And
One Data Management Unit, in order to an index value of noting down data in this cache element and provide and be stored in one in this cache element and get copy soon to corresponding this request end, and this Data Management Unit is got the access time of copy soon in order to this that confirm each this virtual bench administrative unit institute access.
2, the storage LAN server with parallel processing and rapidly fetching according to claim 1, it is characterized in that, comprise also in this entity storage device that one gets access record soon, in order to note down data access frequency stored in this entity storage device and corresponding storage address thereof.
3, the storage LAN server with parallel processing and rapidly fetching according to claim 1 is characterized in that, these data sync means are also got copy soon in order to capture this that revised from other this virtual bench administrative unit.
4, a kind of access method of parallel processing and rapidly fetching provides several request ends by storing the data in LAN access one server-side, it is characterized in that this access method may further comprise the steps:
One replication management unit is set in a server, in this replication management unit, also includes a cache element and be temporary in this cache element in order to data with this entity storage device institute access;
Search data in several entity storage devices that connected by this replication management unit;
According to the data that found out, it is stored into several caching datas to this cache element; And
Being given this cache element that stores corresponding each this replication management unit synchronously by this caching data of unusual fluctuation.
5, the access method of parallel processing and rapidly fetching according to claim 4 is characterized in that, the data of searching in those entity storage devices also comprise the following steps:
Search an index value of data in this cache element by this replication management unit, whether have this to get copy soon in this cache element in order to judge.
6, the access method of parallel processing and rapidly fetching according to claim 4 is characterized in that, the map method is got in utilization soon will be being given this cache element that store corresponding each this replication management unit synchronously by this caching data of unusual fluctuation.
7, the access method of parallel processing and rapidly fetching according to claim 4 is characterized in that, in searching the step of data, also comprises the following steps:
If in this internal storage location, do not hit desire to search data the time, search corresponding data in this cache element from other those replication management unit; And
If do not hit in this cache element in other those replication management unit desire to search data the time, from those entity storage devices, search corresponding data.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101606856A CN101471948A (en) | 2007-12-29 | 2007-12-29 | Storage LAN server capable of in-parallel processing and rapidly fetching, and access method thereof |
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| CNA2007101606856A CN101471948A (en) | 2007-12-29 | 2007-12-29 | Storage LAN server capable of in-parallel processing and rapidly fetching, and access method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973497A (en) * | 2014-05-23 | 2014-08-06 | 浪潮电子信息产业股份有限公司 | Method and device for realizing multi-path concurrent storage based on high-density micro server |
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- 2007-12-29 CN CNA2007101606856A patent/CN101471948A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973497A (en) * | 2014-05-23 | 2014-08-06 | 浪潮电子信息产业股份有限公司 | Method and device for realizing multi-path concurrent storage based on high-density micro server |
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Open date: 20090701 |