CN101753617B - Cloud storage system and method - Google Patents
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- CN101753617B CN101753617B CN 200910188892 CN200910188892A CN101753617B CN 101753617 B CN101753617 B CN 101753617B CN 200910188892 CN200910188892 CN 200910188892 CN 200910188892 A CN200910188892 A CN 200910188892A CN 101753617 B CN101753617 B CN 101753617B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
Abstract
The invention discloses a cloud storage system and a method. The system comprises a global scheduling layer and a cloud storage layer, wherein the global scheduling layer is used for positioning the location of resources at the cloud storage layer according to a received access request and the resources of the access request; the global scheduling layer is composed of one or more than one server; and the cloud storage layer is composed of at least one cloud storage node. By using the global scheduling layer and the cloud storage layer, the cloud storage system can utilize the advantage of the traditional storage architecture of the global scheduling layer and at the same time can also utilize the advantages of the cloud storage layer including strong extendibility and low cost.
Description
Technical field
The present invention relates to Internet technical field, particularly a kind of cloud storage system and method.
Background technology
Existing storage architecture can be divided into two kinds: the one, and the storage architecture of conventional dedicated, such as storage area network (Storage Area Network, SAN) and network access server (NetworkAccess Server, NAS) etc., many common computer or generic server blade are organized, and its unit cost is expensive, so, its poor expandability, thus be not suitable for any wide-area deployment, but but have advantages of good Performance And Reliability.
Another kind is the cloud storage architecture, uses the cloud memory technology of this framework, and typical distributed file system such as Google, but the low linear expansion of this distributed file system cost are so its scale and system-wide throughput can be done very greatly.But its shortcoming is the reliability of a single point and performance and is not so good as SAN and NAS.
But, can't provide a kind of cloud storage system and method in prior art, make it possible to take full advantage of the advantage of above-mentioned two kinds of frameworks.
Summary of the invention
The object of the present invention is to provide a kind of cloud storage system and method, make it possible to take full advantage of the advantage of cloud storage architecture and conventional store framework.
The invention provides a kind of cloud storage system, this system comprises overall scheduling layer and cloud accumulation layer, wherein:
Described overall scheduling layer is used for according to the resource of described access request, locating the position of the described cloud accumulation layer in described resource place according to the access request that receives;
Described overall scheduling layer is comprised of one or more server;
Described cloud accumulation layer is comprised of at least one cloud memory node.
Further, this system also comprises:
Client layer is used for sending access request to described overall scheduling layer; And according to the positional information that described overall scheduling layer is located, directly access the resource of described cloud accumulation layer; Be connected by dedicated network or public network between described client layer and described overall scheduling layer.
Further, between described cloud memory node by the network interconnection.
Further, if described overall scheduling layer is comprised of a plurality of servers, the network that described a plurality of servers form is the DHT distributed network.
Further, described server provides the general-purpose accessing interface for the user, is used for NameSpace management, load balancing and metadata management.
Further, described server also is used for routing management and replica management.
Further, described cloud memory node is used for externally providing file access interface.
Further, described cloud memory node comprises:
The virtual volume administrative unit, at least one NAS, or at least one DFS, each DFS comprise a disk chassis at least;
Described NAS is connected with described overall scheduling layer by described virtual volume administrative unit with DFS.
Further, described virtual volume administrative unit comprises:
Virtual volume administration module and policy management module, described virtual volume administration module are responsible for the file access interface that each NAS equipment and DFS equipment provide is encapsulated, and unified volume management operation externally is provided;
Described policy management module is responsible for from the external reference behavior, or inner load, copy, focus, node health status monitor, and triggers corresponding implementation strategy.
Further, described implementation strategy comprises:
When described policy management module monitors access during focus, just many parts of the data Replicas of described access focus are arrived idle node.
Further, described DFS equipment comprises: each other by interconnected FLR, some FAS and the package module of express network, wherein, described package module is used for externally providing general file access service; Described FLR is used for preserving the metadata information of described DFS equipment; Described FLR is for name space management and detection and the implementation strategy of managing described DFS equipment.
Further, described strategy comprises replication policy and/or focus strategy.
Further, described cloud memory node comprises:
The virtual volume administrative unit, at least one SAN equipment or at least one piece control system BC and at least one disk chassis;
Described San equipment is connected with piece control system BC and is passed through the VVM unit and be connected with standard interface, and described standard interface is connected with described overall scheduling layer;
Described control system BC directly is connected with at least one disk chassis.
Further, described virtual volume administrative unit comprises:
Virtual volume administration module and policy management module, described virtual volume administration module are responsible for the block access interface that each SAN equipment and piece control system BC provide is encapsulated, and unified piece interface service externally is provided;
Described policy management module is responsible for from the external reference behavior, or inner load, copy, focus, node health status monitor, and triggers corresponding implementation strategy.
Further, described implementation strategy comprises:
When described policy management module monitors access during focus, just many parts of the data Replicas of described access focus are arrived idle node.
The present invention also provides a kind of cloud storage means, is applied to cloud storage system, and described cloud storage system comprises: overall scheduling layer and cloud accumulation layer; Wherein, described overall scheduling layer is comprised of one or more server; Described cloud accumulation layer is comprised of at least one cloud memory node; The method comprises:
After described overall scheduling layer was accepted user access request, according to the position of the resource locating resource place cloud accumulation layer of described access request, with the location information notification user, further the user directly accessed the resource of cloud accumulation layer.
Further, between described cloud memory node by the network interconnection.
Further, when described overall scheduling layer was comprised of a plurality of servers, the network that described a plurality of servers form was the DHT distributed network.
Further, described server provides the general-purpose accessing interface for the user, is used for NameSpace management, load balancing and metadata management.
Further, described server also is used for routing management and replica management.
Further, described cloud memory node is used for externally providing file access interface.
Further, described cloud memory node comprises:
The virtual volume administrative unit, at least one NAS, at least one DFS and at least one disk chassis;
Described NAS is connected with described overall scheduling layer by described virtual volume administrative unit with DFS;
Described each DFS directly is connected with at least one described disk chassis.
Further, described cloud memory node comprises:
The virtual volume administrative unit, at least one SAN equipment and at least one piece control system BC and at least one disk chassis;
Described SAN equipment is connected with piece control system BC and is passed through the VVM unit and be connected with standard interface, and described standard interface is connected with described overall scheduling layer;
Described control system BC directly is connected with at least one disk chassis.
Utilize cloud storage system of the present invention and method, by using overall scheduling layer and cloud accumulation layer, make the conventional store framework that can either utilize the overall scheduling layer to have advantages of, the extensibility that also can utilize the cloud accumulation layer to have simultaneously is strong, the advantage that cost is low.
Description of drawings
Fig. 1 illustrates the structural representation of cloud storage system in the embodiment of the present invention;
Fig. 2 illustrates the structural representation of the second layer in the embodiment of the present invention;
Fig. 3 illustrates a kind of structured flowchart of the cloud memory node 301 of embodiment of the present invention medium cloud accumulation layer;
Fig. 4 illustrates the another kind of structured flowchart of embodiment of the present invention medium cloud memory node 301;
Fig. 5 illustrates the structured flowchart of the DFS304 in the embodiment of the present invention;
Fig. 6 illustrates the structural representation of cloud storage system in the embodiment of the present invention;
Fig. 7 illustrates the schematic flow sheet of embodiment of the present invention medium cloud storage means.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is done and elaborated.Each embodiment of the present invention can either take full advantage of existing SAN, NAS storage, introduces simultaneously Google's distributed file system technology and reduces costs.Simultaneously, a large amount of distributed file systems, SAN storage, NAS storage are effectively organized, the high performance advantage that externally provides conventional architectures to have has also been utilized large capacity that the cloud stores service has, technical advantage cheaply simultaneously.The technical scheme of using inventive embodiments to provide can be set up the storage cloud system of extensive high-throughput, and the common store service is provided, and systematic function does not almost have the upper limit, and scale can conveniently be expanded.
Seeing also Fig. 1, is the cloud storage system that the embodiment of the present invention provides, and comprises the content of three levels.Ground floor is client layer, comprises one or more users 101 that can access the cloud stores service, and all users with access cloud stores service can be arranged in client layer.The second layer is the overall scheduling layer, the overall scheduling layer can be comprised of a server according to actual needs, also can use distributed hashtable (Distributed Hash Table, DHT) technology becomes a distributed network with a plurality of server organization, by this distributed network integral body as the overall scheduling layer.Can connect by dedicated network or public network between client layer and overall scheduling layer.The 3rd layer is the cloud accumulation layer, comprises a plurality of cloud memory nodes 301, between a plurality of cloud memory nodes 301 by the network interconnection.
As shown in Figure 2, be the concrete structure of the second layer of the embodiment of the present invention, server 201 is mainly completed NameSpace management, load balancing, and metadata managements etc. can also comprise the functions such as routing management and replica management.The user that server 201 is responsible for client layer provides the general-purpose accessing interface.
As shown in Figure 3, be a kind of structured flowchart of cloud memory node 301 of the cloud accumulation layer of the embodiment of the present invention, cloud memory node 301 is used for externally providing file access interface.As shown in Figure 3, cloud memory node 301 comprises:
Virtual volume management (virtual volume management, VVM) unit 300, at least one NAS303, perhaps at least one DFS304, each DFS comprises a disk chassis 305 at least.
301 pairs of overall scheduling layers of cloud memory node provide NFS (NFS) or universal network file system (the Common Internet File System of standard, CIFS) access interface, inner by express network, that each NAS 303 equipment and distributed file system distributed file system (Distributed File System, DFS) 304 are interconnected.NAS and DFS manage (virtual volume management by virtual volume, VVM) unit 300 externally connects, VVM generally comprises virtual volume administration module and policy management module, wherein the virtual volume administration module is responsible for the file access interface that each NAS equipment and DFS equipment provide is encapsulated, and unified volume management operation externally is provided.Policy management module is responsible for from the external reference behavior, or inner load, copy, focus, node health status etc. monitor, and triggers corresponding implementation strategy.Implementation strategy is the behavior that is set in advance by system, can comprise:
The automatic replication strategy of focus, namely when monitoring, tactical management has the access focus, namely certain focus becomes the access focus, just automatically this hot spot data is copied many parts to other idle node, follow-up just can being distributed on a plurality of nodes that copy from external reference carried out, thereby solves the Access Bottleneck Problem of focus.
DFS directly connects hard disk cabinet 305, provides a distributed file system on hard disk cabinet basis, and the file access service externally is provided.
As shown in Figure 4, it is the another kind of structured flowchart of the cloud memory node 301 that provides of the embodiment of the present invention, comprise: VVM unit 300, at least one SAN equipment 306 and piece control system BC307, cloud memory node 301 is mainly used in externally providing the piece service interface at this moment, such as optical-fibre channel (FibreChanne, FC), internet small computer system interface (Internet Small Computer SystemInterface, ISCSI), the standard interface such as Ethernet optical-fibre channel (Fibre Channel over Ethernet, FCOE).301 externally provide FC, ISCSI, the FCOE block access interface of standard, inner by express network, that each SAN equipment 306 and piece control system BC307 is interconnected.Each San equipment 306 and piece control system BC307 all are connected with standard interface FC, iSCSI or FCOE etc. by VVM unit 300, VVM generally comprises virtual volume administration module and policy management module, wherein the virtual volume administration module is responsible for the block access interface that each SAN equipment and piece control system BC provide is encapsulated, and unified piece service interface externally is provided.Policy management module is responsible for from the external reference behavior, or inner load, copy, focus, node health status etc. monitor, and triggers corresponding implementation strategy.Implementation strategy is the behavior that is set in advance by system, can comprise:
The automatic replication strategy of focus, namely when monitoring certain bottom node, tactical management has the access focus, just automatically this hot spot data is copied many parts to other relative idle node, follow-up just can being distributed on a plurality of nodes that copy from external reference carried out, thereby solves the Access Bottleneck Problem of focus.
BC directly connects hard disk cabinet 305, provides the piece management system on hard disk cabinet basis, and the block access service externally is provided.
As shown in Figure 5, be the structured flowchart of the DFS304 that provides of the embodiment of the present invention.DFS304 is comprised of a FLR309, several FAS310 and package module 311, and is interconnected by express network each other, externally externally provides general file access service by package module 311, such as interfaces such as NFS or CIFS.The file data storing of DFS304 is on FAS310, and FLR309 preserves the metadata information of whole DFS304, and FLR309 is responsible for name space management and some the strategy monitorings of DFS304 and carries out, such as replication policy, and focus strategy etc.During the external reference file, first obtain the position of the FAS310 at file place by the FLR309 query metadata, then externally provide file data by FAS310.File data itself does not pass through FLR.
As shown in Figure 6, be a kind of cloud storage system that the embodiment of the present invention provides, comprising:
Described overall scheduling layer is comprised of one or more server;
Described cloud accumulation layer is comprised of at least one cloud memory node.
Wherein, also comprise:
Be connected by dedicated network or public network between client layer, described client layer and described overall scheduling layer.Data are stored and are read and directly occur between client layer and cloud accumulation layer
Wherein, between described cloud memory node by the network interconnection.
Wherein, if described overall scheduling layer is comprised of a plurality of servers, the network that described a plurality of servers form is the DHT distributed network.
Wherein, described server provides the general-purpose accessing interface for the user, is used for NameSpace management, load balancing and metadata management.
Wherein, described server also is used for routing management and replica management.
Wherein, described cloud memory node is used for externally providing file access interface.
Wherein, described cloud memory node comprises:
The virtual volume administrative unit, at least one NAS, at least one DFS and at least one disk chassis;
Described NAS is connected with described overall scheduling layer by described virtual volume administrative unit with DFS;
Described each DFS directly is connected with at least one described disk chassis.
Wherein, described virtual volume administrative unit comprises:
Virtual volume administration module and policy management module, described virtual volume administration module are responsible for the file access interface that each NAS equipment and DFS equipment provide is encapsulated, and unified volume management operation externally is provided;
Described policy management module is responsible for from the external reference behavior, or inner load, copy, focus, node health status monitor, and triggers corresponding implementation strategy.
Wherein, described implementation strategy comprises:
When described policy management module monitors access during focus, just many parts of the data Replicas of described access focus are arrived idle node.
Described DFS equipment comprises each other by interconnected FLR, some FAS and the package module of express network, and wherein, described package module is used for externally providing general file access service; Described FLR is used for preserving the metadata information of described DFS equipment; Described FLR is for name space management and detection and the implementation strategy of managing described DFS equipment.Described strategy comprises replication policy and/or focus strategy.
Wherein, described cloud memory node comprises:
The virtual volume administrative unit, at least one SAN equipment and at least one piece control system BC and at least one disk chassis;
Described SAN equipment is connected with piece control system BC and is passed through the VVM unit and be connected with standard interface, and described standard interface is connected with described overall scheduling layer;
Described control system BC directly is connected with at least one disk chassis.
Wherein, described virtual volume administrative unit comprises:
Virtual volume administration module and policy management module, described virtual volume administration module are responsible for the block access interface that each SAN equipment and piece control system BC provide is encapsulated, and unified piece interface service externally is provided;
Described policy management module is responsible for from the external reference behavior, or inner load, copy, focus, node health status monitor, and triggers corresponding implementation strategy.
Wherein, described implementation strategy comprises:
When described policy management module monitors access during focus, just many parts of the data Replicas of described access focus are arrived idle node.
As shown in Figure 7, be the cloud storage means that the embodiment of the present invention provides, be applied to cloud storage system, described cloud storage system comprises:
Overall scheduling layer and cloud accumulation layer;
Described overall scheduling layer is comprised of one or more server;
Described cloud accumulation layer is comprised of at least one cloud memory node;
Described method comprises:
S701, overall scheduling layer are accepted user access request;
S702, described overall scheduling layer are according to the resource location of described access request Location Request, it is resource position in the cloud accumulation layer, and then notify the user with the resource location information of request, the user directly and the storage contact of depositing this resource in the cloud accumulation layer set up data channel, carry out reading and writing data.
Wherein, between described cloud memory node by the network interconnection.
Wherein, if described overall scheduling layer is comprised of a plurality of servers, the network that described a plurality of servers form is the DHT distributed network.
Wherein, described server provides the general-purpose accessing interface for the user, is used for NameSpace management, load balancing and metadata management.
Wherein, described server also is used for routing management and replica management.
Wherein, described cloud memory node is used for externally providing file access interface.
Wherein, described cloud memory node comprises:
The virtual volume administrative unit, at least one NAS, at least one DFS and at least one disk chassis;
Described NAS is connected with described overall scheduling layer by described virtual volume administrative unit with DFS;
Described each DFS directly is connected with at least one described disk chassis.
Wherein, described cloud memory node comprises:
The virtual volume administrative unit, at least one SAN equipment and at least one piece control system BC and at least one disk chassis;
Described SAN equipment is connected with piece control system BC and is passed through the VVM unit and be connected with standard interface, and described standard interface is connected with described overall scheduling layer;
Described control system BC directly is connected with at least one disk chassis.
The above is only the specific embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (23)
1. a cloud storage system, is characterized in that, this system comprises overall scheduling layer and cloud accumulation layer, wherein:
Described overall scheduling layer is used for according to the resource of described access request, locating the position of the described cloud accumulation layer in described resource place according to the access request that receives;
Described overall scheduling layer is comprised of at least one server;
Described cloud accumulation layer is comprised of at least one cloud memory node;
Described cloud accumulation layer is comprised of at least one cloud memory node; Described cloud memory node is any one in following building form:
Described cloud memory node comprises virtual volume administrative unit and NAS;
Described cloud memory node comprises virtual volume administrative unit and DFS;
Described cloud memory node comprises virtual volume administrative unit and SAN equipment;
Described cloud memory node comprises virtual volume administrative unit and piece control system BC and disk chassis;
Described cloud memory node comprises virtual volume administrative unit, NAS, DFS and disk chassis;
Described cloud memory node comprises virtual volume administrative unit, SAN equipment, piece control system BC and disk chassis.
2. system according to claim 1, is characterized in that, this system also comprises:
Client layer is used for sending access request to described overall scheduling layer; And according to the positional information that described overall scheduling layer is located, directly access the resource of described cloud accumulation layer; Be connected by dedicated network or public network between described client layer and described overall scheduling layer.
3. system according to claim 1, is characterized in that, between described cloud memory node by the network interconnection.
4. system according to claim 1, is characterized in that, if described overall scheduling layer is comprised of a plurality of servers, the network that described a plurality of servers form is the DHT distributed network.
5. system according to claim 1, is characterized in that, described server provides the general-purpose accessing interface for the user, is used for NameSpace management, load balancing and metadata management.
6. system according to claim 1, is characterized in that, described server also is used for routing management and replica management.
7. system according to claim 1, is characterized in that, described cloud memory node is used for externally providing file access interface.
8. system according to claim 1, is characterized in that, by the virtual volume administrative unit, at least one NAS, or at least one DFS, each DFS comprise a disk chassis at least when described cloud memory node; :
Described NAS is connected with described overall scheduling layer by described virtual volume administrative unit with DFS.
9. system according to claim 8, is characterized in that, described virtual volume administrative unit comprises:
Virtual volume administration module and policy management module, described virtual volume administration module are responsible for the file access interface that each NAS equipment and DFS equipment provide is encapsulated, and unified volume management operation externally is provided;
Described policy management module is responsible for from the external reference behavior, or inner load, copy, focus, node health status monitor, and triggers corresponding implementation strategy.
10. system according to claim 9, is characterized in that, described implementation strategy comprises:
When described policy management module monitors access during focus, just many parts of the data Replicas of described access focus are arrived idle node.
11. system according to claim 9 is characterized in that, described DFS equipment comprises: each other by interconnected FLR, some FAS and the package module of express network, wherein, described package module is used for externally providing general file access service; Described FLR is used for preserving the metadata information of described DFS equipment; Described FLR is for name space management and detection and the implementation strategy of managing described DFS equipment.
12. system according to claim 11 is characterized in that, described strategy comprises replication policy and/or focus strategy.
13. system according to claim 1 is characterized in that, when described cloud memory node by the virtual volume administrative unit, when at least one SAN equipment or at least one piece control system BC and at least one disk chassis form:
Described SAN equipment is connected with piece control system BC and is passed through the VVM unit and be connected with standard interface, and described standard interface is connected with described overall scheduling layer;
Described control system BC directly is connected with at least one disk chassis.
14. system according to claim 13 is characterized in that, described virtual volume administrative unit comprises:
Virtual volume administration module and policy management module, described virtual volume administration module are responsible for the block access interface that each SAN equipment and piece control system BC provide is encapsulated, and unified piece interface service externally is provided;
Described policy management module is responsible for from the external reference behavior, or inner load, copy, focus, node health status monitor, and triggers corresponding implementation strategy.
15. system according to claim 14 is characterized in that, described implementation strategy comprises:
When described policy management module monitors access during focus, just many parts of the data Replicas of described access focus are arrived idle node.
16. a cloud storage means is characterized in that, is applied to cloud storage system, described cloud storage system comprises: overall scheduling layer and cloud accumulation layer; Wherein, described overall scheduling layer is comprised of at least one server; Described cloud accumulation layer is comprised of at least one cloud memory node; Described cloud memory node is any one in following building form: described cloud memory node comprises virtual volume administrative unit and NAS; Described cloud memory node comprises virtual volume administrative unit and DFS; Described cloud memory node comprises virtual volume administrative unit and SAN equipment; Described cloud memory node comprises virtual volume administrative unit and piece control system BC and disk chassis; Described cloud memory node comprises virtual volume administrative unit, NAS, DFS and disk chassis; Described cloud memory node comprises virtual volume administrative unit, SAN equipment, piece control system BC and disk chassis; The method comprises:
After described overall scheduling layer was accepted user access request, according to the position of the resource locating resource place cloud accumulation layer of described access request, with the location information notification user, further the user directly accessed the resource of cloud accumulation layer; Described positional information is cloud memory node and the disk chassis information at the resource place of described access request.
17. cloud storage means according to claim 16 is characterized in that, between described cloud memory node by the network interconnection.
18. method according to claim 16 is characterized in that, when described overall scheduling layer was comprised of a plurality of servers, the network that described a plurality of servers form was the DHT distributed network.
19. method according to claim 16 is characterized in that, described server provides the general-purpose accessing interface for the user, is used for NameSpace management, load balancing and metadata management.
20. method according to claim 16 is characterized in that, described server also is used for routing management and replica management.
21. method according to claim 16 is characterized in that, described cloud memory node is used for externally providing file access interface.
22. method according to claim 16 is characterized in that, when described cloud memory node by the virtual volume administrative unit, at least one NAS, when at least one DFS and at least one disk chassis form:
Described NAS is connected with described overall scheduling layer by described virtual volume administrative unit with DFS;
Described each DFS directly is connected with at least one described disk chassis.
23. method according to claim 16 is characterized in that, when described cloud memory node by the virtual volume administrative unit, when at least one SAN equipment and at least one piece control system BC and at least one disk chassis form:
Described SAN equipment is connected with piece control system BC and is passed through the VVM unit and be connected with standard interface, and described standard interface is connected with described overall scheduling layer;
Described control system BC directly is connected with at least one disk chassis.
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| PCT/CN2010/072565 WO2010148794A1 (en) | 2009-12-11 | 2010-05-10 | Cloud storage system and method thereof |
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| CN 200910188892 CN101753617B (en) | 2009-12-11 | 2009-12-11 | Cloud storage system and method |
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