CN101237400A - Migration method for network additive storage service and network additional storage node - Google Patents
Migration method for network additive storage service and network additional storage node Download PDFInfo
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- CN101237400A CN101237400A CNA2008100042579A CN200810004257A CN101237400A CN 101237400 A CN101237400 A CN 101237400A CN A2008100042579 A CNA2008100042579 A CN A2008100042579A CN 200810004257 A CN200810004257 A CN 200810004257A CN 101237400 A CN101237400 A CN 101237400A
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Abstract
The present invention discloses a migration method and an NAS node for NAS services, which are used for improving the quality of the NAS services provided from the NAS nodes to NAS user ends; the method comprises the following steps that: in an NAS assembly, each of the NAS nodes shares the IP address information of the NAS node, the communication state information of the NAS service currently provided to an NAS user end, and the address information of the served NAS user end with each of other NAS nodes; when a malfunction occurs on the NAS node which is providing NAS services to the NAS user end, an NAS node is selected from other normally worked NAS nodes; based on the IP address information which is shared by the NAS node on which a malfunction occurs, the communication state information of the NAS services provided to the NAS user end and the address information of the NAS user end, the selected NAS node continues to provide NAS services to the NAS user end.
Description
Technical field
The present invention relates to the Network storage technology field, relate in particular to the moving method and the network attached storage node of network attached storage service.
Background technology
NFS (NFS, Network File System) is widely used a kind of file-sharing technology on each Linux/UNIX platform.
CIFS (CIFS, Common Internet File System) is the technology of widely used shared file on each windows platform.
Network attached storage (NAS, Network Attached Storage) technology be a kind ofly will distribute, independently each small data is integrated into data center large-scale, centralized management, so that the technology that different user conducts interviews.
The product of realizing the NAS technology generally all outwards provides service with NFS and two kinds of forms of CIFS, to guarantee based on the platform of Linux/UNIX and the service that can use NAS to provide based on the platform of Windows.
In order to improve availability, all can dispose the NAS product usually with trunking mode, promptly use a plurality of NAS nodes to form the NAS cluster network NAS is provided service.
Fig. 1 is the network structure of NAS system, in conjunction with this figure as can be known,
The NAS client, the service that can provide by the NAS cluster conducts interviews to the NAS memory device, for example checks, writes, deletes, reads and revise data etc., and the NAS client comprises server that application is provided, Intranet user etc.
The rear end memory device is generally used for the content-data of storage file.
The NAS cluster provides the computer of NAS service to form by network by many to the NAS client, and the computer of the described NAS of providing service is commonly referred to the NAS node;
Wherein every NAS node has at least two network interfaces respectively, and one of them network interface is connected with the rear end memory device, and another network interface is used to the virtual access interface that constitutes the NAS cluster and the NAS cluster is provided for the NAS client.
Wherein the correlation technique principle of NAS cluster is by comprising:
1, the NAS cluster is made up of many NAS nodes (Cluster Node), every NAS node has at least two network interfaces respectively, one of them network interface is used for being connected with the rear end memory device, another network interface is used for constituting the NAS cluster network with other NAS nodes, and the virtual access interface that cluster is provided to the NAS client;
2, each NAS node all stores the configuration information of NAS cluster, described configuration information comprises for which node in the NAS cluster, and Internet protocol (IP, the Internet Protocol) address information of each node, and the address and the relevant information of the rear end memory device of required connection;
3, when NAS client desire is used the NAS service that NAS provided (NFS service or CIFS service), communicate by the virtual access interface of this NAS client and cluster, the NAS cluster distributes a NAS node to serve for it provides NAS to this NAS client;
Whether 4, under the normal operating conditions of NAS cluster, its NAS node all keeps communicating by letter in twos, have the NAS node to break down to check, can not communicate by letter if any the NAS node is at the appointed time interior, then is judged to be this NAS node and breaks down.
According to prior art, if there is the NAS node to break down, then consult automatically by other NAS nodes that do not break down, select the NAS node of an operate as normal, and carry out corresponding with the NAS node that this is selected the NAS IP addresses of nodes information that breaks down.
In the NAS client when cluster network request NAS serves, if this service need be provided by the NAS node that breaks down, then according to this NAS IP addresses of nodes information that breaks down, determine the NAS service that its request is provided to this NAS client by the described NAS node of selecting, soon the NAS services migrating that need be provided by the NAS node that breaks down provides described NAS service to the described NAS node of selecting by this NAS node of selecting.
As can be seen in the prior art, if the NAS node breaks down in the process that the NAS service is provided to the NAS client, and because the NAS node of other operate as normal is not known the communicate status information of the NAS business that this NAS node that breaks down provides to this NAS client and the address information of this NAS client, wherein communicate status information can be used to show that this NAS business is any business, then this NAS that just is being provided service will be interrupted, need reconnect to the NAS cluster by this NAS client, can continue to obtain this NAS service.Manual in this case reconnect and comparatively senior reconnecting automatically all will expend the regular hour, therefore will find obviously that in the NAS client NAS service has pause, move problems such as not smooth, especially in place that real-time is had relatively high expectations, this problem is even more serious, thereby reduced the quality of NAS service.
Summary of the invention
The embodiment of the invention provides a kind of moving method and NAS node of NAS service, the quality that the NAS that provides to the NAS client with raising NAS node serves.
The embodiment of the invention provides a kind of moving method of NAS service, comprise: in the NAS cluster, each NAS node is with information of self IP address, the address information of communicate status information that the NAS that reaching forward NAS client provides serves and the NAS client of being served is shared to other each NAS nodes; When a NAS node that is providing NAS to serve to the NAS client breaks down, in the NAS of other operate as normal node, select a NAS node; And by the described NAS node of selecting based on the NAS IP addresses of nodes information that breaks down that shares to, and the communicate status information of the NAS that provides to NAS client service and the address information of NAS client, continuing provides NAS service to the NAS client.
The embodiment of the invention has also proposed a kind of NAS node, comprise: the information sharing unit, be used for information of self IP address, the address information of communicate status information that the NAS that reaching forward NAS client provides serves and the NAS client of being served is shared to other each the NAS nodes in the NAS node cluster of place; And service provides the unit, be used for when described node take over break down and when the NAS client is providing the NAS node of NAS service to work on, based on the NAS IP addresses of nodes information that breaks down that shares to, the communicate status information of the NAS service that provides to the NAS client and the address information of NAS client are provided, and continuing provides NAS service to the NAS client.
The embodiment of the invention is by in the NAS cluster, and each NAS node is with information of self IP address, and the address information of forward NAS client NAS communication for service state information that provides and the NAS client of being served, and shares to other each NAS nodes; And when a NAS node that is providing NAS to serve to the NAS client breaks down, in the NAS of other operate as normal node, select a NAS node, and by the described NAS node of selecting based on the NAS IP addresses of nodes information that breaks down that shares to, the communicate status information of the NAS service that provides to the NAS client and the address information of NAS client are provided, continuation provides NAS service to the NAS client, in case avoided that the NAS node breaks down in the prior art, the NAS client that this NAS node is served just needs to serve to NAS cluster request NAS again, the NAS service disruption that causes, the NAS service pause appears in the NAS client, problem such as not smooth has improved the quality of NAS service.
Description of drawings
Fig. 1 is the network structure of NAS system;
Fig. 2 is the flow chart of the NAS services migrating method of embodiment of the invention proposition;
Fig. 3 is the schematic diagram of NAS services migrating in the embodiment of the invention;
Fig. 4 is the structural representation of the NAS node of embodiment of the invention proposition;
Fig. 5 proposes the concrete structure schematic diagram that service provides the unit for the embodiment of the invention.
Embodiment
For solving the problem that background technology proposes, the embodiment of the invention proposes: by each NAS node to other NAS nodes sharing information of self IP address, the communicate status information that the NAS that reaching forward NAS client provides serves and the address information of NAS client, and when a NAS node that is providing NAS to serve breaks down, in other normal N AS node, select a NAS node, by this NAS node of selecting, the above-mentioned information of the NAS node that breaks down based on this that shares to, provide NAS service to this NAS client, to improve the quality of NAS service.
Elaborate this scheme below in conjunction with Figure of description and specific embodiment.
Fig. 2 is the flow chart of the NAS services migrating method of embodiment of the invention proposition, and in conjunction with this figure as can be known, the transition process of NAS service comprises in the embodiment of the invention:
In the embodiment of the invention, all have connection between per two the NAS nodes in the NAS cluster, this connection is used for based on certain tactful transmission information.
Described strategy includes but not limited to regularly strategy, promptly transmits information at the appointed time; Trigger policy promptly transmits information when information changes.
Wherein the information of Chuan Diing can only be the information of change, be that each NAS node is in information of self IP address, and during at least one the information change in the address information of described communicate status information and NAS client, give other each NAS nodes with the described information sharing that changes;
The information of Chuan Diing also can be whole information in addition, be that each NAS node is in information of self IP address, and during at least one the information change in the address information of described communicate status information and NAS client, with information of self IP address, and the address information of described communicate status information and NAS client is shared to other each NAS nodes.
Based on the transmission of described information, the NAS node can check not only whether other NAS nodes break down, and can obtain the communicate status information of the NAS service that other NAS node forwards NAS client provides and the address information of the NAS client of being served.Described communicate status information is used to show that the NAS node provides any NAS service to the NAS client, for example in rear end memory device reading of data or write data etc.
In general between above-mentioned per two NAS nodes all the scheme of mutual communication cause easily that NAS intra cluster communication amount is excessive, the problem of consume network bandwidth, the therefore this usually scheme of communication in twos will limit the scale of cluster.But herein because the above-mentioned information of NAS nodes sharing, all belong to the quite few information of amount of information, and, for example only when the communicate status information of NAS service changes, just transmit strategies such as this information by different information transmission policies, can also further reduce the internodal traffic of NAS.Therefore under the NAS cluster,,, can implement fully not causing adverse effect to the scale of NAS cluster by interconnecting to share the scheme of above-mentioned information between per two NAS nodes.
Wherein when selecting described NAS node, can be consulted automatically select by the NAS node of operate as normal, also can be the NAS node of determining according to predetermined rule, for example with this immediate normal NAS node of NAS IP addresses of nodes that breaks down etc.
When automatically consulting to select, can but be not limited to consider following factor: the communication quality of the load of NAS node, NAS node etc.
In the embodiment of the invention, because each NAS IP addresses of nodes information, the address information of communicate status information that the NAS that reaching forward NAS client provides serves and the NAS client of being served, all have and share to other NAS nodes, then when a certain NAS node that is providing NAS to serve to the NAS client breaks down, just can take over the NAS node that this breaks down by the NAS node of the operate as normal of selecting in the step 2, continuation provides described NAS service, all kinds of problems of avoiding background technology to mention to this NAS client.
The normal NAS node of selecting in addition can initiatively be got in touch the NAS client that the NAS node that breaks down is served, continue to provide NAS service to it, also can be by this NAS client active request service, by the NAS node of selecting it is carried out legal authentication, and after authentication is passed through, continue to provide described service to this NAS client.
Fig. 3 is the schematic diagram of NAS services migrating in the embodiment of the invention, supposes that wherein NAS node 1 breaks down when the NAS service is provided to NAS client 1 and 2.Then in conjunction with this figure, and according to step 1 and step 2, provide the embodiment of following NAS services migrating:
Via above-mentioned shared procedure, provide NAS service 1 and at NAS node 1 respectively at 2 o'clock to NAS client 1 and 2, NAS node 2 and 3 all obtains the address information of IP address information, NAS client 1 of NAS node 1 and the communicate status information of corresponding NAS service 1, and the communicate status information of the address information of NAS client 2 and corresponding NAS service 2.
Suppose at time t1, NAS node 1 provides NAS service 2 changes for NAS service 3 is provided to NAS client 2, then NAS node 1 will be shared this transition information to NAS node 2 and 3, promptly notify NAS node 2 and 3, and the NAS service that provides when forward direction NAS client is NAS service 3.
Suppose that at time t2, NAS node 1 breaks down, then NAS node 2 and 3 can be found can not communicate by letter with NAS node 1, breaks down so determine NAS node 1;
Then by similar procedure, NAS node 3 continues to provide NAS service 2 to NAS client 2, finishes the migration of NAS service 2.
The foregoing description is to share information, determine NAS node 3 with negotiation mode and continue to provide service and initiatively get in touch NAS client 1 and 2 by NAS node 3 and continue to provide that to serve be example, illustrative step 1 and 2 with triggering mode.
In fact, when the information of sharing, can also share information with timing mode, for example NAS node 1 to 3 is just shared described information each other every predetermined amount of time;
When the NAS node of selecting to continue to provide, can also be to determine and should still continue to provide NAS service 1 and 2 respectively to NAS client 1 and 2 by NAS node 2 by NAS node 3 according to rule in advance.For example can be immediate IP address information rule: relatively NAS node 1,2 and 3 IP address information, to select in NAS node 2 and 3, the IP address information of which and NAS node 1 is the most approaching, then which NAS node to continue to provide service by; Perhaps can be rule: in NAS node 2 and 3, select providing the node of NAS service 1 and/or 2 to continue to provide NAS service according to identical NAS service;
This is external to continue to provide on the service manner, can also initiatively get in touch NAS node 3 (supposing to continue to provide described service by NAS node 3) by NAS client 1 and 2:
NAS client 1 and 3 requests continue to provide NAS service 1 and 2;
According to this request, NAS node 3 obtains the address information of NAS client 1 and 2;
At above-mentioned NAS services migrating method, the embodiment of the invention has also proposed a kind of NAS node, the quality that the NAS that provides to the NAS client with raising NAS node serves.
Please refer to Fig. 4, the structural representation of the NAS node that proposes for the embodiment of the invention, in conjunction with this figure as can be known, the NAS node 10 that the embodiment of the invention proposes comprises:
Service provides unit 12, be used for when described node 10 take over break down and when the NAS client is providing the NAS node of NAS service to work on, based on the NAS IP addresses of nodes information that breaks down that shares to, the communicate status information of the NAS service that provides to the NAS client and the address information of NAS client are provided, and continuing provides NAS service to the NAS client.
If wherein initiatively get in touch the NAS client that the NAS node that breaks down is served by the NAS node of selecting, continue to provide NAS service to it, then the embodiment of the invention also proposes to serve a kind of concrete structure that unit 12 is provided.
Fig. 5 proposes the concrete structure schematic diagram that service provides the unit for the embodiment of the invention, and in conjunction with this figure as can be known, service provides unit 12 specifically to comprise in the embodiment of the invention:
NAS client contacts subelement 13 is used for the address information of the NAS client of being served based on the NAS node that breaks down that shares to, and initiatively gets in touch this NAS client;
The NAS service provides subelement 14, the communicate status information of the NAS service that provides based on the NAS IP addresses of nodes information that breaks down that shares to and to the NAS client is provided, and the NAS client of relating to NAS client contacts subelement 13 continues to provide described NAS service.
The embodiment of the invention is by each NAS nodes sharing IP address information separately in the NAS cluster, the communicate status information of the NAS service that forward NAS client provides and the address information of NAS client, make when a NAS node breaks down, can in other normal N AS node, select a NAS node, by the NAS node of selecting based on the above-mentioned information that shares to, continue to provide NAS service to this NAS client, in case thereby avoided that the NAS node breaks down in the prior art, to make the NAS client that it is served to reconnect the NAS cluster, request NAS service, cause the NAS service disruption, reduce the problems such as quality of NAS service, improved the quality of the NAS service that the NAS node provides.
The embodiment of the invention gives regularly sharing mode of above-mentioned information, and this mode is easy and simple to handle, the simplicity that helps implementing.
During at least one information changing by in above-mentioned information of the embodiment of the invention, the NAS node is to the whole above-mentioned information of other NAS nodes sharing, in case feasible information change, then above-mentioned information can be shared rapidly, thereby in time shared above-mentioned information, improved the sharing efficiency of information.
During at least one information changing by in above-mentioned information of the embodiment of the invention, the NAS node is to the information of other NAS nodes sharing changes, the information that not only makes can access in time to be shared, and can avoid repeating sharing above-mentioned information, and the information of having saved repeats to share all kinds of resources that consume.
Above-mentioned sharing mode can also use at concrete application scenarios combination in the embodiment of the invention, thereby has satisfied different user's requests, has improved the exploitativeness of scheme.
Select a NAS node in the NAS node that the embodiment of the invention also proposes in operate as normal, when the NAS client of being served to the NAS node that breaks down continues to provide the NAS service, can consult to select the described NAS NAS node of service that continues to provide by the NAS node of operate as normal, also can select according to pre-defined rule, this can make that the NAS node can be as the case may be on the one hand, the number of the NAS client of for example being served, the number of the NAS service that is provided, the current network situation waits and negotiates a NAS node, help the raising of NAS node overall quality of service, and help load of balanced NAS node etc., select according to pre-defined rule on the other hand, easy and simple to handle, relevant resource consumption is less, helps the enforcement of scheme.
The embodiment of the invention is after selecting the NAS node that continues to provide the NAS service, can initiatively get in touch corresponding N AS client by this NAS node, continue to provide NAS service to it, also can continue to provide this NAS service by corresponding NAS client active request, verify according to its address information by the NAS node again, and when checking is passed through, just continue to provide NAS service, to need not the NAS client is done any change so on the one hand, just can realize the migration of NAS service, improve NAS service quality, can continue to provide the NAS client of NAS service to verify to request by the NAS node on the other hand, can prevent that the NAS node from providing NAS service to illegal NAS client, improve the fail safe of NAS service, also help improving the quality of NAS service.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1, a kind of moving method of network attached storage service is characterized in that, comprising:
In the network attached storage cluster, each network attached storage node is with the internet protocol address information of self, the address information of communicate status information that the network attached storage that reaching forward network attached storage client provides is served and the network attached storage client of being served is shared to other each network attached storage nodes;
When a network attached storage node that is providing network attached storage to serve to the network attached storage client breaks down, in the network attached storage node of other operate as normal, select a network attached storage node; And
By the internet protocol address information of the described network attached storage node of selecting based on the network attached storage node that breaks down that shares to, the communicate status information of the network attached storage service that provides to the network attached storage client and the address information of network attached storage client are provided, and continuing provides the network attached storage service to the network attached storage client.
2, the method for claim 1, it is characterized in that, each network attached storage node is regularly with the internet protocol address information of self, and the address information that reaches described communicate status information and network attached storage client is shared to other each network attached storage nodes.
3, the method for claim 1, it is characterized in that, each network attached storage node is in the internet protocol address information of self, and during at least one the information change in the address information of described communicate status information and network attached storage client, give other each network attached storage nodes with the described information sharing that changes.
4, the method for claim 1, it is characterized in that, each network attached storage node is in the internet protocol address information of self, and during at least one the information change in the address information of described communicate status information and network attached storage client, with the internet protocol address information of self, and the address information of described communicate status information and network attached storage client is shared to other each network attached storage nodes.
5, the method for claim 1 is characterized in that, holds consultation between the network attached storage node by other operate as normal and selects a network attached storage node.
6, the method for claim 1 is characterized in that, according to preset rules, selects a network attached storage node in the network attached storage node of other operate as normal.
7, the method for claim 1, it is characterized in that, the address information of the network attached storage client of being served according to the network attached storage node that breaks down that shares to by the described network attached storage node selected, initiatively get in touch this network attached storage client, continuing provides service to this network attached storage client.
8, the method for claim 1 is characterized in that, the network attached storage client active request of being served by the network attached storage node that breaks down continues to provide the network attached storage service; And
Relatively send the address information of the network attached storage client of request by the described network attached storage node of selecting, whether consistent with the address information of this network attached storage client that shares to, and
When unanimity, provide the network attached storage service to this network attached storage client, otherwise refusal provides.
9, a kind of network attached storage node is characterized in that, comprising:
The information sharing unit, be used for internet protocol address information with self, the address information of communicate status information that the network attached storage that reaching forward network attached storage client provides is served and the network attached storage client of being served is shared to other each the network attached storage nodes in the place network attached storage node cluster;
Service provides the unit, be used for when described node take over break down and when the network attached storage client is providing the network attached storage node of network attached storage service to work on, internet protocol address information based on the network attached storage node that breaks down that shares to, the communicate status information of the network attached storage service that provides to the network attached storage client and the address information of network attached storage client are provided, and continuing provides the network attached storage service to the network attached storage client.
10, node as claimed in claim 9 is characterized in that, described service provides the unit specifically to comprise:
Network attached storage client contacts subelement is used for the address information of the network attached storage client of being served based on the network attached storage node that breaks down that shares to, and initiatively gets in touch this network attached storage client;
The network attached storage service provides subelement, be used for based on the internet protocol address information of the network attached storage node that breaks down that shares to and the communicate status information of serving to the network attached storage that the network attached storage client provides, the network attached storage client of relating to network attached storage client contacts subelement continues to provide described network attached storage service.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100042579A CN101237400A (en) | 2008-01-24 | 2008-01-24 | Migration method for network additive storage service and network additional storage node |
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| CNA2008100042579A CN101237400A (en) | 2008-01-24 | 2008-01-24 | Migration method for network additive storage service and network additional storage node |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699825B (en) * | 2009-10-28 | 2013-01-02 | 成都市华为赛门铁克科技有限公司 | Network file system access method, device and system |
| CN107734026A (en) * | 2017-10-11 | 2018-02-23 | 郑州云海信息技术有限公司 | A kind of design method, device and the equipment of network attached storage cluster |
| CN107872530A (en) * | 2017-11-23 | 2018-04-03 | 郑州云海信息技术有限公司 | A kind of NAS service access systems, method and device |
| CN109391691A (en) * | 2018-10-18 | 2019-02-26 | 郑州云海信息技术有限公司 | The restoration methods and relevant apparatus that NAS is serviced under a kind of single node failure |
| CN111212127A (en) * | 2019-12-29 | 2020-05-29 | 浪潮电子信息产业股份有限公司 | Storage cluster, service data maintenance method, device and storage medium |
| CN113596195A (en) * | 2021-08-23 | 2021-11-02 | 重庆紫光华山智安科技有限公司 | Public IP address management method, device, main node and storage medium |
| US11275530B2 (en) | 2015-12-30 | 2022-03-15 | Huawei Technologies Co., Ltd. | Method, system, and related device for NAS data access |
| CN116567001A (en) * | 2023-05-16 | 2023-08-08 | 上海凯翔信息科技有限公司 | Cloud NAS-based data migration system |
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2008
- 2008-01-24 CN CNA2008100042579A patent/CN101237400A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699825B (en) * | 2009-10-28 | 2013-01-02 | 成都市华为赛门铁克科技有限公司 | Network file system access method, device and system |
| US11275530B2 (en) | 2015-12-30 | 2022-03-15 | Huawei Technologies Co., Ltd. | Method, system, and related device for NAS data access |
| CN107734026A (en) * | 2017-10-11 | 2018-02-23 | 郑州云海信息技术有限公司 | A kind of design method, device and the equipment of network attached storage cluster |
| CN107734026B (en) * | 2017-10-11 | 2020-10-16 | 苏州浪潮智能科技有限公司 | Method, device and equipment for designing network additional storage cluster |
| CN107872530A (en) * | 2017-11-23 | 2018-04-03 | 郑州云海信息技术有限公司 | A kind of NAS service access systems, method and device |
| CN109391691A (en) * | 2018-10-18 | 2019-02-26 | 郑州云海信息技术有限公司 | The restoration methods and relevant apparatus that NAS is serviced under a kind of single node failure |
| CN111212127A (en) * | 2019-12-29 | 2020-05-29 | 浪潮电子信息产业股份有限公司 | Storage cluster, service data maintenance method, device and storage medium |
| CN113596195A (en) * | 2021-08-23 | 2021-11-02 | 重庆紫光华山智安科技有限公司 | Public IP address management method, device, main node and storage medium |
| CN116567001A (en) * | 2023-05-16 | 2023-08-08 | 上海凯翔信息科技有限公司 | Cloud NAS-based data migration system |
| CN116567001B (en) * | 2023-05-16 | 2023-12-29 | 上海凯翔信息科技有限公司 | Cloud NAS-based data migration system |
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