CN101938516B - User-oriented dynamic storage resource distribution method - Google Patents
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Abstract
The invention discloses a user-oriented dynamic storage resource distribution method. The method can dynamically increase a storage pool, and meanwhile can supply a storage space with size as a user required to a client. The method comprises that: (1) a storage resource agent sends physical volume set information to a storage resource manager; (2) the storage resource manager updates an information link list of the storage resource agent, and periodically detects the heartbeat of the storage resource agent; (3) a client agent sends physical volume application information or physical volume release information to a storage resource server according to the demand of the user; and (4) the storage resource manager receives the information of the client agent: a, if the information is the physical volume application information, the storage resource manager automatically distributes a physical volume to the client agent, and the client agent automatically establishes ISCSI connection to the distributed physical volume to acquire storage resources; and b, if the information is the physical volume release information, the storage resource manager reclaims the physical volume. The method has the advantages that the storage resource manager can automatically distribute or reclaim the storage resources for the client agent as the user required, and intervention of an administrator is not needed.
Description
Technical field
The invention belongs to network storage field, relate in particular to a kind of user oriented, based on the method for the dynamic assignment storage resources of iSCSI agreement.
Background technology
ISCSI (internet SCSI) is the order that a cover is defined in TCP/IP transmission over networks SCSI agreement, is used between client and storage system, transmitting scsi command and data.At present, the standardization of ISCSI technology, and be widely used.
A typical application of ISCSI agreement is that client is installed an ISCSI initiator module, ISCSI target module of storage server end installation.Client in the ISCSI message, sends to storage system through IP network with scsi command/data encapsulation.Storage service system is handled each ISCSI message, and the data of taking out wherein are written in the storage medium.
At present, through ISCSI memory allocated resource, normally give client with the memory allocation of default size.Client connects through the target module of ISCSI initiator module and storage server end, thereby uses storage resources.
If the user can not make full use of the space of having distributed, then can cause the waste of memory space; If existing memory space inadequate is difficult to expansion again.Therefore, existing scheme can not effectively utilize storage resources basically.
Summary of the invention
The object of the present invention is to provide a kind of method of user oriented dynamic assignment storage resources, this method can dynamically increase storage pool, can offer the memory space of the size of client user's requirement simultaneously.
The method of a kind of user oriented dynamic assignment storage resources provided by the invention comprises the steps:
The 1st step: the storage resources agency sends storage resources agent side physical volume aggregate information to the SRM device;
Said storage resources agent side physical volume aggregate information comprises storage resources Agent IP address, PV number and storage resources agent side PV individual information;
The 2nd step: the storage resources agent side physical volume aggregate information that the SRM device obtained for the 1st step adds storage resources proxy information chained list;
Said storage resources proxy information chained list is meant the chained list of being set up by storage resources proxy information node, and storage resources proxy information node comprises following field: storage resources Agent IP address, PV number, storage resources agency's heartbeat and PV chained list;
The 3rd step: the client-side management device judges according to user's request whether client-side management device space satisfies user's needs.If not enough, then according to user's request initialization physical volume application information, send the physical volume application information to explorer, changeed for the 4th step then; If the client-side management device has idle physical volume, then release physical is rolled up, and sends physical volume release information to the SRM device, changes for the 7th step then; If meet consumers' demand just in client-side management device space, changeed for the 9th step;
Said physical volume application information comprises client-side management device IP address, is designated as LVip, and the space size is designated as size, the PV performance;
Said physical volume release information comprises the PV number that will discharge, and all client-side management device end PV individual informations that will discharge;
The 4th step: the SRM device receives the physical volume application information of client-side management device;
The 5th step: the SRM device distributes physical volume for the client-side management device, and its process is:
The 5.1st step: after the SRM device receives the physical volume application information of client-side management device; Inquiry storage resources proxy information chained list finds in the node of survival and satisfies in the 3rd step the PV node of the desired SRM end of PV performance in the physical volume application information;
The 5.2nd step: the SRM device is revised the PV node of the SRM device end that is found, and simultaneously, makes size=size-PVspace2, and PVspace2 is meant the PV space size of the PV node of SRM device end;
The 5.3rd step: judge whether size＞0 sets up, when size＞0, show that the space of having distributed does not reach application condition as yet, change the 5.1st and go on foot; Otherwise, changeed for the 5.4th step;
The 5.4th step: loop ends got into for the 6th step;
The 6th step: the client-side management device connects the physical volume that has distributed as the initiator of ISCSI, changes for the 9th step then over to;
The 7th step: the physical volume that the SRM device receives the client-side management device discharges information, and physical volume release information comprises the PV number that will discharge, and all client-side management device end PV individual informations that will discharge;
The 8th step: the SRM device reclaims the pairing physical volume of client-side management device PV individual information in the physical volume release information in the 7th step;
The 9th step: finish.
The invention has the advantages that the storage resources agency periodically sends storage resources agent side physical volume aggregate information to the SRM device, forms set of memory resources.The client-side management device is according to concrete user's request, and the physical volume application information from the application memory device to the SRM device or the physical volume that send discharge information.The SRM device distributes for Client Agent automatically and reclaims memory device, and need not manual intervention.Because in the method, the client-side management device can send solicited message to the SRM device in real time according to user's request, and therefore, the storage resources that the client-side management device is assigned to can reach and effectively utilize.
Description of drawings
Fig. 1 is the typical application structure chart based on the ISCSI technology according to prior art;
Fig. 2 be the inventive method based on a kind of sketch map of system configuration;
Fig. 3 is storage resources agency's physical volume attribute list;
Fig. 4 is a client-side management device physical volume application information table;
Fig. 5 is the flow chart of the inventive method;
Fig. 6 is the flow chart based on distribution physical volume of the present invention;
Fig. 7 is the flow chart based on recovery physical volume of the present invention.
Embodiment
Below through by embodiment the present invention being described in further detail, but following examples only are illustrative, and protection scope of the present invention does not receive the restriction of these embodiment.
In order to reach the object of the invention; This instance based on system configuration comprise client-side management device (Client Agent; CA), (Storage Resource Manager is SRM) with storage resources agency (Storage Resource Agent, SRA) three parts for the SRM device.
Client-side management device (Client Agent, client-side management device), i.e. application server.Major function is memory device or the idle memory device of release that satisfies condition to SRM device (Storage Resource Manager, SRM device) application.
SRM device (Storage Resource Manager; The SRM device); Major function is to be organized into a resource pool to storage resources agency described below (Storage Resource Agent, storage resources agency), for above-mentioned client-side management device provides memory device.
Storage resources agency (Storage Resource Agent, storage resources agency) is made up of physical volume (capacity, performance, attributes such as availability), and major function is to client-side management device (ClientAgent, client-side management device) memory device to be provided.
Concrete implementation process is divided into four parts: 1. the storage resources agency sends storage resources agent side physical volume aggregate information (showing like Fig. 3) to the SRM device; 2. SRM device registration storage resources agent side physical volume aggregate information joins it in storage resources proxy information chained list, forms storage pool; 3. the client-side management device sends physical volume application information or physical volume release information according to user's request to the SRM device; 4. the SRM device receives the information from the client-side management device, if the physical volume application information, then according to application information; Search storage resources proxy information table; The physical volume that satisfies condition is distributed to the client-side management device, and then, the client-side management device connects the physical volume that is assigned to as the ISCSI initiator; If physical volume discharges information, then the SRM device reclaims the pairing physical volume of client-side management device end PV individual information in the physical volume release information.
Introduce various piece in detail below in conjunction with accompanying drawing, as shown in Figure 5:
S1: the storage resources agency sends storage resources agent side physical volume aggregate information to the SRM device
In this stage, storage resources agency (target side of ISCSI) periodically obtains local ip address, and storage resources agent side PV individual information, forms storage resources agent side physical volume aggregate information.Send storage resources agent side physical volume aggregate information to the SRM device then, for the client-side management device provides memory device.
Storage resources agent side physical volume aggregate information: (showing like Fig. 3) comprises storage resources Agent IP address (being designated as SRAIP), PV number (being designated as PVnuml) and storage resources agent side PV individual information; Storage resources agent side PV individual information comprises: PV name (being designated as PVnamel), PV space size (being designated as PVspacel), PV performance (being designated as Pvperfl), PV availability (being designated as Pvavaill);
S2: the SRM device adds storage resources proxy information chained list with the storage resources agent side physical volume aggregate information among the S1
Storage resources proxy information chained list is meant the chained list of being set up by storage resources proxy information node; Storage resources proxy information node comprises following field: storage resources Agent IP address (being designated as SRAIP); PV number (being designated as PVnum2), the heartbeat of SRA (being designated as heart) and PV chained list.The PV chained list is meant the chained list of being set up by SRM device end PV node.SRM device end PV node comprises following field: PV space size (being designated as PVspace2), PV performance, PV availability, the IP address (being designated as LVip) of corresponding client-side management device.
The SRM device receives the storage resources agent side physical volume aggregate information that the storage resources agency sends among the S1; At first confirm that according to storage resources Agent IP address (being designated as SRAIP) whether Already in this storage resources agency in the storage resources proxy information chained list; If do not exist; The storage resources agent side physical volume aggregate information of then sending according to storage resources agency among the S1 is initialized as new storage resources proxy information node, inserts in the storage resources proxy information chained list; If exist; Then find with S1 in the corresponding storage resources proxy information node of storage resources agency; With the heartbeat value zero setting in this node; And judge whether the PV number in the information of sending among the S1 is consistent with the PV number in this node, if consistent, the storage resources agent side physical volume aggregate information of then sending according to storage resources agency among the S1 is upgraded this node; Otherwise the PV chained list before the deletion is rebuild the PV chained list according to the storage resources agent side physical volume aggregate information that storage resources agency among the S1 sends.
In storage resources proxy information chained list, LVip is 0 o'clock in the SRM device end PV node, identifies this node for being unallocated state; Otherwise, be distribution state.
The heartbeat of the periodic detection of stored Resource Broker of SRM device if the heartbeat number of times reaches higher limit, then is labeled as in heavenly, otherwise adds 1.
Higher limit is to act on behalf of the disposal ability of number and SRM device according to storage resources, a determined value (in this specific embodiment, the higher limit span is generally 6---10).
S3: the client-side management device sends solicited message according to user's request to the SRM device
If client-side management device insufficient space then according to user's request initialization physical volume application information, sends the physical volume application information to explorer, change S4; If the client-side management device has idle physical volume, then need the release physical volume, and send physical volume release information to the SRM device, change S7; If meet consumers' demand just in client-side management device space, change S9.
User's request comprises required space size and PV performance.The physical volume application information comprises client-side management device IP address (being designated as LVip), space size (being designated as size), PV performance (being designated as Pvperf3).Physical volume release information comprises the PV number that will discharge, and all client-side management device end PV individual informations that will discharge.
Client-side management device end PV individual information comprises: the storage resources agency's under this PV IP address (being designated as SRAip); PV name (being designated as PVname), PV capacity (being designated as Pvspace3), PV performance (being designated as Pvperf3), PV availability (being designated as Pvavail3).
S4: the SRM device receives the physical volume application information of client-side management device
The SRM device is waited for the physical volume application information of client-side management device as service side.
S5: the SRM device distributes physical volume for the client-side management device
The SRM device is searched storage resources proxy information chained list according to the physical volume application information of client-side management device, for the client-side management device distributes physical volume.Concrete steps are as shown in Figure 6:
S5-1: after the SRM device receives the physical volume application information of client-side management device, inquiry storage resources proxy information chained list.In the node of survival (be beats less than S2 in the set upper limit value, represent that current node is available), find the SRM end PV node of the requirement of physical volume application information among S3 performance.
S5-2: the SRM device is revised the SRM device end PV node that is found, and simultaneously, makes size=size-PVspace2
For the SRM device end PV node that S5-1 finds, the LVip information of revising this node is the LVip in the S3 physical volume application information, is distribution state; Simultaneously, size=size-PVspace2.PVspace2 is the PV space size of the SRM device end PV node that finds of S5-1.
S5-3: judge whether size＞0 sets up
Whether Size is greater than the zero condition that whether finishes as the judgement circulation.When size＞0, show that the space of having distributed does not reach application condition as yet, change S5-1, continue to distribute physical volume; Otherwise, show and distributed enough spaces, change S5-4.
S5-4: loop ends.
S6: the client-side management device connects the physical volume that has distributed as the initiator of ISCSI, changes S9 then over to
After the client-side management device received the physical volume assignment information from the SRM device, the client-side management device was as the initiator of ISCSI, from the trend application to physical volume send connection request.After the successful connection,, create the volume group based on the physical volume that is assigned to; On the volume group, create logical volume then; Logical volume is mounted under certain catalogue, and then the client-side management device can be as visiting local disk under mount directory, and long-range physical volume such as is read and write at operation.
The physical volume assignment information is meant the PV number that the SRM device distributes for the client-side management device and is each client-side management device end PV individual information of its distribution.
S7: the physical volume that the SRM device receives the client-side management device discharges information
The SRM device is as service side, and the physical volume that receives the client-side management device discharges information, and is ready for reclaiming physical volume.
S8: the SRM device reclaims the pairing physical volume of client-side management device PV individual information in the physical volume release information among the S7, gets into S9 then
The concrete steps of reclaimer operation are as shown in Figure 7:
S8-1: the SRM device is acted on behalf of at storage resources and is found corresponding storage resources proxy information node in the chained list
The SRM device is searched storage resources proxy information chained list according to the storage resources agency's of client-side management device end PV individual information in the physical volume release information among the S3 IP address (being designated as SRAIP); Find corresponding stored Resource Broker node, the PV name according to client-side management device end PV individual information finds corresponding SRM device PV node then.
S8-2: revising the PV node is unallocated state
For the SRM device end PV node that finds among the S8-1, the LVip of this node is put 0, promptly identifying this PV node is unallocated state.
S9: finish
In this specific embodiment, can see that the user can be according to the actual requirements, application or the operation of release physical volume are so that memory space reaches effective utilization.
The above is preferred embodiment of the present invention, but the present invention should not be confined to the disclosed content of this embodiment and accompanying drawing.So everyly do not break away from the equivalence of accomplishing under the disclosed spirit of the present invention or revise, all fall into the scope of the present invention's protection.
Claims (2)
1. the method for a user oriented dynamic assignment storage resources, its step comprises:
The 1st step: the storage resources agency sends storage resources agent side physical volume aggregate information to the SRM device;
Said storage resources agent side physical volume aggregate information comprises storage resources Agent IP address, PV number and storage resources agent side PV individual information;
The 2nd step: the storage resources agent side physical volume aggregate information that the SRM device obtained for the 1st step adds storage resources proxy information chained list;
Said storage resources proxy information chained list is meant the chained list of being set up by storage resources proxy information node, and storage resources proxy information node comprises following field: heartbeat and the PV chained list of SRA acted on behalf of in storage resources Agent IP address, PV number, storage resources;
The 3rd step: the client-side management device judges according to user's request whether client-side management device space satisfies user's needs; If not enough, then according to user's request initialization physical volume application information, send the physical volume application information to explorer, changeed for the 4th step then; If the client-side management device has idle physical volume, then release physical is rolled up, and sends physical volume release information to the SRM device, changes for the 7th step then; If meet consumers' demand just in client-side management device space, changeed for the 9th step;
Said physical volume application information comprises client-side management device IP address, is designated as LVip, and the space size is designated as size, the PV performance;
Said physical volume release information comprises the PV number that will discharge, and all client-side management device end PV individual informations that will discharge;
The 4th step: the SRM device receives the physical volume application information of client-side management device;
The 5th step: the SRM device distributes physical volume for the client-side management device, and its process is:
The 5.1st step: after the SRM device receives the physical volume application information of client-side management device; Inquiry storage resources proxy information chained list finds in the node of survival and satisfies in the 3rd step the desired SRM end of PV performance PV node in the physical volume application information;
The 5.2nd step: the SRM device is revised the SRM device end PV node that is found, and simultaneously, makes size=size – PVspace2, and PVspace2 is meant the PV space size of SRM device end PV node;
The 5.3rd step: judge size>0 whether set up, as size>and 0 the time, show that the space of having distributed does not reach application condition as yet, change the 5.1st and go on foot; Otherwise, changeed for the 5.4th step;
The 5.4th step: loop ends got into for the 6th step;
The 6th step: the client-side management device connects the physical volume that has distributed as the initiator of ISCSI, changes for the 9th step then over to;
The 7th step: the physical volume that the SRM device receives the client-side management device discharges information, and physical volume release information comprises the PV number that will discharge, and all client-side management device end PV individual informations that will discharge;
The 8th step: the SRM device reclaims the pairing physical volume of client-side management device PV individual information in the physical volume release information in the 7th step;
The 9th step: finish.
2. the method for a kind of user oriented dynamic assignment storage resources according to claim 1 is characterized in that, in the 8th step, the concrete steps of reclaimer operation are:
The 8.1st step: the SRM device is acted on behalf of at storage resources and is found corresponding storage resources proxy information node in the chained list;
The 8.2nd step: for the SRM device end PV node that finds, the LVip of this node is put 0, promptly identifying this PV node is unallocated state.
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| CN103106246B (en) * | 2012-12-31 | 2016-08-17 | 中国科学院深圳先进技术研究院 | The management method of the memory space of a kind of distributed file system and system |
| CN103414728B (en) * | 2013-08-23 | 2016-05-04 | 安徽安庆瀚科莱德信息科技有限公司 | Storage area network based on iscsi agreement and collocation method thereof |
| CN105792377A (en) * | 2016-02-26 | 2016-07-20 | 努比亚技术有限公司 | Device and method for allocating channel resources and access point |
| CN106453360B (en) * | 2016-10-26 | 2019-04-16 | 上海爱数信息技术股份有限公司 | Distributed block storing data access method and system based on iSCSI protocol |
| CN106776032B (en) * | 2016-12-22 | 2018-07-03 | 北京华云网际科技有限公司 | The treating method and apparatus of the I/O request of distributed block storage |
| CN107454137B (en) * | 2017-06-16 | 2020-09-15 | 广州天宁信息技术有限公司 | Method, device and equipment for on-line business on-demand service |
| CN107222548B (en) * | 2017-06-22 | 2018-06-05 | 北京华云网际科技有限公司 | The reading/writing method of I/O data, device and system in distributed block storage system |
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