CN101527682B - Method for guaranteeing network storage service quality and system thereof - Google Patents
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Abstract
The invention discloses a method for guaranteeing network storage service quality and a system thereof. The method comprises the steps as follows: key application program is registered in a host; when the host, a storage device and usable resource of a network can all satisfy the requirement of the service quality of the key application program or a key application program class which is affiliated with the key application program, resource is reserved at the host, the storage device and the network for the key application program or the key application program class and a resource reservation route is confirmed; resource is reserved at the host by using the resource reservation route to process the key application program; data is transmitted through the resource reservation route; when the storage device judges that the received data is transmitted through the resource reservation route, the data is processed by the corresponding reserved resource at the storage device by using the resource reservation route; and new data is transmitted through the resource reservation route. The invention can provided key network storage application with the quality guarantee of end-to-end service.
Description
Technical field
The present invention relates to Network storage technology, particularly be related to the network storage service quality (Quality of Service, QoS) system and method for Bao Zhanging are provided.
Background technology
The QoS technology is popular research field in the computer network always, and internet engineering task group (IETF) proposed integrated service (IntServ), Differentiated Services (DiffServ) respectively, based on the integrated service (IntServ over DiffServ) of Differentiated Services, based on the model and the technology of the Differentiated Services guaranteed qos such as (DiffServ over MPLS) of multi protocol label exchange.
Intserv model be connection-oriented, based on stream, architecture that state is relevant, can provide to have very that the service and the favorable service rank of high flexibility guarantee.Its uses RSVP, and (ReSerVation Protocol RSVP), admit control, transmission control etc. to implement reservation, control, management and the scheduling of single streams, can realize that end-to-end QoS guarantees.IntServ needs all-router to handle the signaling message of each stream on the control path, safeguards the path status and the reservation state of each stream, carries out classification, scheduling and buffer management based on stream on data path.
DiffServ has adopted the transmission control of aggregated flow, realizes " marginal classification, the inner forwarding ", and the network boundary node is transferred in the control that state is relevant, keeps the simple of network internal.Implement the preservation and the monitoring mechanism of flow state information at the network boundary node, the classification of flowing, shaping, gathering etc., and for stream compose with differentiated Services code point (DiffServ Code Point, DSCP).Be subjected to different whenever slipping a line in the internal node grouping to (Per Hop Behavior PHB), simply dispatches forwarding, thereby simplifies the service mechanism of internal nodes of network, alleviates its burden.DiffServ is with good expansibility, hierarchical setting, but its SM and fairness are poor, does not have the better service rank to guarantee.DiffServ has adopted the packet forward mode of hop-by-hop route, and the support of end-to-end QoS is seemed not enough.
For guaranteeing the QoS of the network storage, IBM Corporation has proposed a patent " service quality of iSCSI ".A kind of system that provides QoS to ensure for the iSCSI environment based on DiffServ has been provided this patent.But, because the DiffServ data flow that is categorized as that is based on data flow provides service as previously mentioned, that is to say that DiffServ provides the service guarantee of same levels to same class data flow, like this, the quality assurance that probabilistic type (statistics type) can only be provided is provided for individual traffic DiffServ, and use for the network storage of reality, especially key application then needs the certainty quality to guarantee.Therefore, technique scheme can not satisfy the needs that actual storage is used.At present, be applicable to the service guarantee system and method proposition as yet of storage system.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of system and method that guarantees network storage service quality, and can provide QoS to ensure for the key application of network store system, is applicable to network store system.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
A kind of method that guarantees network storage service quality, this method comprises:
The key application program of registration in main frame, during the quality of service requirement of the key application class under the available resources of main frame, memory device and network all can satisfy described key application program or described key application program, according to default service strategy, the reserved resource on described main frame, memory device and network for described key application program or described key application class is established a resource reservation path;
Utilize described resource reservation path corresponding reserved resource on main frame, described key application program is handled, and the data that needs are transferred to memory device are transmitted by described resource reservation path;
It is when transmitting by the resource reservation path that memory device is judged the described data that receive, utilize described resource reservation path corresponding reserved resource on memory device that described data are handled, and the new data that needs is transferred to main frame transmit by described resource reservation path;
Described in main frame the registration key application program be:
The attribute of recorded key application program and service quality QoS parameter in main frame, described qos parameter comprise the storage I/O I/O RSVP information of main frame;
Described in main frame the registration key application program further comprise:
Main frame is determined the storage I/O RSVP information and the network bandwidth obligate information of memory device according to the attribute of key application program, and is recorded in the main frame as the qos parameter of described key application program.
Preferably, described in main frame registration further comprise before the key application program:
Main frame is according to the attribute information and the service quality QoS parameter of application program, and judging described application program is key application program.
Preferably, described service strategy is:
With single key application program is the service strategy that unit carries out resource reservation, perhaps, is the service strategy that unit carries out resource reservation with key application class.
Preferably, when described service strategy for being that unit is when carrying out the service strategy of resource reservation with single key application program, when described available resources when main frame, memory device and network all can satisfy the quality of service requirement of described key application program, according to default service strategy, be described key application program reserved resource on described main frame, memory device and network, establish a resource reservation path and be:
According to the attribute and the qos parameter of key application program,, determine the resource reservation demand of described key application program according to default resource reservation demand strategy;
Resource state information according to main frame, can judgement satisfy described resource reservation demand, if can satisfy, then generate the reservation requests of supporting host protocol, described reservation requests is carried the attribute and the qos parameter of key application program, otherwise, withdraw from the flow process of establishing the resource reservation path into key application program;
Described reservation requests is converted to the reservation requests of the Network Layer Signaling agreement of supporting future mechanism, and the network by supporting future mechanism is transferred to memory device with the reservation requests of described Network Layer Signaling agreement;
The reservation requests of the Network Layer Signaling agreement of the described support future mechanism that memory device will receive is converted to the reservation requests of supporting the memory device agreement;
Memory device according to default resource reservation demand strategy, is determined the resource reservation demand of described key application program according to the attribute and the qos parameter of the entrained key application program of the reservation requests of supporting the memory device agreement;
Resource state information according to memory device, can judgement satisfy described resource reservation demand, if can satisfy, then on memory device, reserve respective resources and the corresponding resource reservation path of record according to described resource reservation demand, generate the reservation response message of network enabled layer signaling protocol, by the network of supporting future mechanism described reservation response message is transferred to main frame, described network based described reservation response message is reserved corresponding Internet resources;
Main frame is reserved respective resources according to the described reservation response message that receives and the resource reservation demand of fixed described key application program on main frame, determine a resource reservation path.
Preferably, when described service strategy for being that unit is when carrying out the service strategy of resource reservation with key application class, when described available resources when main frame, memory device and network all can satisfy the quality of service requirement of described key application program, according to default service strategy, be the reserved resource on described main frame, memory device and network of the key application class under the described key application program, establish a resource reservation path and be:
X1, judge whether for the key application class under the described key application program carries out resource reservation, if then change step x2 over to, otherwise change step x9 over to;
X2, according to the attribute and the qos parameter of key application program, according to default resource reservation demand strategy, determine the resource reservation demand of described key application program;
X3, according to the resource state information of main frame, judge whether the idle reserved resource of described key application class in main frame can satisfy the resource reservation demand of described key application program, if can satisfy, then withdraw from the flow process in described establishment resource reservation path; Otherwise create to reserve and adjust message, the I/O bandwidth information that message is carried needs expansion to reserve is adjusted in described reservation, and the described I/O bandwidth information of reserving that need expand comprises the storage I/O bandwidth information of main frame or the storage I/O bandwidth information and corresponding network bandwidth information of main frame and memory device;
X4, message conversion is adjusted in described reservation adjusted message for the reservation of the Network Layer Signaling agreement of supporting future mechanism, by the network of supporting future mechanism transmission of messages is adjusted in the reservation of the Network Layer Signaling agreement of described support future mechanism and given memory device, message is adjusted in described network based described reservation, and the resource reservation path of establishing for described key application class is expanded;
The reservation of the Network Layer Signaling agreement of the described support future mechanism that x5, memory device will receive is adjusted message conversion and is adjusted message for the reservation of supporting the memory device agreement;
X6, memory device are adjusted the entrained needs of message according to the reservation of supporting the memory device agreement and are expanded the storage I/O bandwidth information of reserving, and determine the resource reservation expansion demand of described key application class;
X7, according to the resource state information of memory device, can judgement satisfy described resource reservation expansion demand, if can satisfy, then on memory device, further reserve the corresponding bandwidth resource for described key application class according to described resource reservation expansion demand, response message is adjusted in the reservation that generates the Network Layer Signaling agreement of supporting future mechanism, by the network of supporting future mechanism response message is adjusted in the reservation of described Network Layer Signaling agreement and is transferred to main frame;
X8, main frame are adjusted response message according to the described reservation that receives, and further reserve the corresponding bandwidth resource for described key application class on main frame; Withdraw from the flow process in described establishment resource reservation path;
X9, according to the attribute and the qos parameter of key application program, according to default resource requirement strategy, determine the resource reservation demand of described key application class; Resource state information according to main frame, can judgement satisfy the resource reservation demand of described key application class, if can satisfy, then generate the reservation requests of supporting host protocol, described reservation requests is carried the attribute and the qos parameter of key application program, otherwise, withdraw from the flow process of establishing the resource reservation path into key application class;
X10, described reservation requests is converted to the reservation requests of the Network Layer Signaling agreement of supporting future mechanism, the network by supporting future mechanism is transferred to memory device with the reservation requests of described Network Layer Signaling agreement;
The reservation requests of the Network Layer Signaling agreement of the described support future mechanism that x11, memory device will receive is converted to the reservation requests of supporting the memory device agreement;
X12, memory device according to default resource requirement strategy, determine the resource reservation demand of described key application class according to the attribute and the qos parameter of the entrained key application program of the reservation requests of supporting the memory device agreement;
X13, according to the resource state information of memory device, can judgement satisfy described resource reservation demand, if can satisfy, then on memory device, reserve respective resources and the corresponding resource reservation path of record according to described resource reservation demand, generate the reservation response message of the Network Layer Signaling agreement of supporting future mechanism, described reservation response message is transferred to main frame by the network of supporting future mechanism;
X14, main frame are reserved respective resources according to the described reservation response message that receives and the resource reservation demand of fixed described key application class on main frame.
Preferably, the described described resource reservation path corresponding reserved resource on main frame that utilizes is handled described key application program, and the data that needs are transferred to memory device are transferred to memory device by described resource reservation path and are:
After main frame is judged pending application program and is key application program, determine whether to establish the resource reservation path for the key application class under described key application program or the described key application program, if, then utilize the reserved resource of described resource reservation path correspondence on main frame of having established, described key application program is handled, the data that needs are transferred to memory device send to memory device by described resource reservation path, otherwise, on main frame, apply for resource for described application program, utilize described resource that described application program is handled.
Preferably, it is when transmitting by the resource reservation path that described memory device is judged the described data that receive, utilize described resource reservation path corresponding reserved resource on memory device that described data are handled, and utilize described resource reservation path to send to main frame the new data that needs are transferred to main frame to be:
Memory device judges that whether the described data that receive are by the transmission of resource reservation path, if, then utilize described resource reservation path corresponding reserved resource on memory device that described data are handled, and the new data that needs is transferred to main frame sends to main frame according to described resource reservation path, otherwise, on memory device, apply for resource for described data, utilize described resource that described data are handled.
Preferably, described network is the Internet protocol IP network;
Described main frame is the start end of Internet Small Computer Systems Interface iSCSI storage system, and described memory device is the destination end of iSCSI storage system;
The described described resource reservation path corresponding reserved resource on main frame that utilizes is handled described key application program, and the data that needs are transferred to memory device are transferred to memory device by described resource reservation path and are:
Main frame is that described key application program generates incident by the SCSI layer event generator of system, utilize described resource reservation path corresponding determined storage resources of reserved resource on main frame to deposit described incident, and described incident is packaged into small computer system interface control data piece SCSI CDB;
Obtain the kernel process scheduling according to described reserved resource, described SCSI CDB is packaged into Internet Small Computer Systems Interface protocol Data Unit iSCSI PDU, and it is joined in the determined reservation connection of the described reserved resource formation at the iSCSI layer;
Obtain the kernel process scheduling according to the determined bandwidth reserved information of described reserved resource; Described iSCSIPDU is mapped as the network protocol data unit of supporting future mechanism; Utilize the scheduling of described kernel process, the network protocol data unit of described support future mechanism is transferred to memory device by described resource reservation path.
Preferably, the described described resource reservation path corresponding reserved resource on memory device that utilizes is handled described data, and utilizes described resource reservation path to be transferred to main frame the new data that needs are transferred to main frame to be:
The network protocol data unit of the described support future mechanism that memory device will receive is descapsulated into iSCSI PDU;
Described iSCSI PDU is joined in the determined connection resource of described reserved resource;
With described iSCSI PDU deblocking is SCSI CDB, and described SCSI CDB is joined in the determined system resource of described reserved resource;
Utilize described kernel process scheduling that described SCSI CDB is handled, generate new SCSI CDB, described new SCSI CDB is added in the determined system resource of described reserved resource;
Described new SCSI CDB is packaged into new iSCSI PDU, and joins in the determined connection resource of described reserved resource;
Obtain the kernel process scheduling according to described reserved resource, and determine scheduling time according to the determined bandwidth resource of described reserved resource;
Convert described new iSCSI PUD the network protocol data unit of new support future mechanism to, utilize described kernel process scheduling that the network protocol data unit of described new support future mechanism is sent to main frame according to described resource reservation path.
A kind of system that guarantees network storage service quality, this system comprises: the network of main frame, memory device and support future mechanism, wherein,
Described main frame, be used for key application program is registered, in the time can satisfying the quality of service requirement of described key application program, according to default service strategy, trigger network and memory device are that the key application class under described key application program or the described key application program is reserved corresponding resource respectively, and on main frame, reserve corresponding resource, establish a resource reservation path; Utilize the reserved resource of described resource reservation path correspondence on main frame, described key application program is handled, utilize described resource reservation path and memory device to carry out data interaction;
Described memory device is used for being the key application class reserved resource under described key application program or the described key application program according to default service strategy; Judging the data that receive is when transmitting by the resource reservation path, utilizes described resource reservation path corresponding reserved resource on memory device that described data are handled; Utilize described resource reservation path and main frame to carry out data interaction;
Described network is used to the resource reservation path between described key application program establishment main frame and the memory device, realizes the transfer of data between main frame and the memory device;
Described main frame comprises key application program processing module, application interface module and QoS administration module, wherein,
Described application interface module is used for identifying key application program from application program, and registers described key application program in the QoS administration module; Resource reservation routing information according to key application program in the QoS administration module, judge whether to establish the resource reservation path for described key application program or with the key application class under the described key application program, if then trigger key application program processing module and utilize described resource reservation path corresponding reserved resource on main frame to handle described application program;
Described QoS administration module comprises grader, scheduler and controller, wherein:
Described grader is used to write down attribute, qos parameter and the resource reservation routing information of described key application program, and the reservation management device that triggers in the scheduler is created the reservation requests of supporting host protocol;
Described scheduler comprises reservation management device and explorer, wherein,
Described reservation management device, be used for attribute and qos parameter according to key application program, according to default resource reservation demand strategy, determine the resource reservation demand of the key application class that described key application program or described key application program are affiliated; Be used for resource state information according to explorer, can judgement satisfy the resource reservation demand of the key application class under described key application program or the described key application program, if can satisfy, then generate the reservation requests of supporting host protocol and be sent to controller, described reservation requests is carried the attribute and the qos parameter of key application program, comprises the storage I/O RSVP information and the network bandwidth obligate information of storage I/O RSVP information, main frame and the memory device of main frame in the wherein said qos parameter; Reservation response message according to the controller transmission, the indexed resource manager is according to the resource reservation demand reserved resource of the key application class under described key application program or the described key application program, and the indication grader writes down corresponding resource reservation path; Be used for resource state information according to explorer, judge that can the affiliated idle reserved resource of key application class in main frame of described key application program satisfy the resource reservation demand of described key application program, if can not satisfy, then according to the resource reservation demand of described key application program, determine that described key application class need expand the bandwidth information of reservation, the described bandwidth information that needs expansion to reserve comprises the storage I/O bandwidth information of main frame, the storage I/O bandwidth information of main frame and memory device and corresponding network bandwidth information; Establishment is carried the reservation of described bandwidth information and is adjusted message; Adjust response message according to the reservation that controller sends, the indexed resource manager carries out resource reservation according to the resource reservation expansion demand of described key application class; According to default maintenance period,, safeguard in the grader resource reservation path that success is established by periodically the reservation requests of described support host protocol being sent to controller;
Described explorer, the reserved resource information that is used for preserving main frame manages the resource of main frame, sends resource state information to the reservation management device; Resource reservation is carried out in indication according to the reservation management device;
Controller is used for the reservation requests that the reservation management device sends is converted to the reservation requests of the Network Layer Signaling agreement of supporting future mechanism, and the network by supporting future mechanism is transferred to memory device with the reservation requests of network enabled layer protocol; The reservation adjustment message that message conversion is the network enabled layer signaling protocol is adjusted in the reservation that the reservation management device sends, reservation response message or the reservation adjustment response message that response message converts the support host protocol to adjusted in the reservation response message or the reservation of network enabled agreement, and be sent to the reservation management device in the scheduler; The iSCSI PDU that key application program processing module is generated changes into the network protocol data unit of supporting future mechanism, and sends to key application program processing module;
Key application program processing module, be used to utilize the reserved resource of key application program on main frame, described key application program or the key application program similar with described key application program are handled, and the resource reservation path of the data that needs are transferred to memory device by key application program sends to memory device; Utilize the controller in the QoS administration module that the iSCSI PDU that generates is converted into the network protocol data unit of supporting future mechanism, and utilize and support the network of future mechanism to send to memory device;
Described network is used for establishing or the maintenance resources reserved path according to reservation requests; Be used for the resource reservation path of having established being expanded according to reserving adjustment message.
Preferably, described memory device comprises: QoS administration module and key application program processing module, wherein:
The QoS administration module comprises controller and scheduler, wherein,
Controller, be used for the reservation requests of the described network enabled layer protocol that will receive or reserve and adjust message conversion for supporting the reservation requests of memory device agreement, and send to the reservation management device of scheduler, reservation response message or the reservation adjustment response message that response message is converted into the network enabled layer protocol adjusted in reservation response message or reservation that the reservation management device sends, and sent to main frame by the network of supporting future mechanism; Be used for identifying the data of transmitting by reserved path, operate carrying out decapsulation, and send to key application program processing module by the data of reserved path transmission from the data that receive;
Scheduler comprises reservation management device and explorer, wherein,
The reservation management device is used for the attribute and the qos parameter of the entrained key application program of the reservation requests that receives according to slave controller, according to default resource reservation demand strategy, determines the resource reservation demand of key application program; According to the resource state information in the explorer, judge that can memory device satisfy described resource reservation demand, if can satisfy, then the indexed resource manager is according to described resource reservation demand reserved resource, and write down described reserved resource and corresponding resource reservation path, generate and support the reservation response message of memory device agreement to send to controller; Adjust the entrained storage I/O bandwidth information of message according to receiving in the slave controller to reserve, can judgement carry out resource reservation according to described storage I/O bandwidth information, if can, then the indexed resource manager is the further reserved resource of described key application class according to described storage I/O bandwidth information, generates the reservation adjustment response message of supporting the memory device agreement and sends to controller;
Explorer is used for sending resource state information to the reservation management device; Indication reserved resource on memory device according to the reservation management device;
Key application program processing module is used for the explorer by the query scheduling device, determines reserved resource corresponding on memory device according to the resource reservation path of transmission data; The data of utilizing the reserved resource processing controller to send, the new data transaction that obtains after utilizing the controller of QoS administration module to handle becomes to support the network protocol data unit of future mechanism, by the network of supporting future mechanism described network protocol data unit is sent to main frame.
In sum, the system and method that guarantees network storage service quality that the present invention proposes, based on future mechanism, realized the reservation of uniting of storage I/O bandwidth and Network Transmission bandwidth, provide deterministic end to end service quality guarantee thereby can use for the key network storage.
Description of drawings
The system configuration schematic diagram that Fig. 1 guarantees network storage service quality for the present invention;
Fig. 2 is the indicative flowchart of the inventive method;
Fig. 3 is the flow chart of the embodiment one of the inventive method;
Fig. 4 is the particular flow sheet of step 301 among Fig. 3;
Fig. 5 is the particular flow sheet of step 302 among Fig. 3.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Basic thought of the present invention is: based on intserv model, utilize future mechanism to guarantee that simultaneously the key network storage uses needed storage I/O bandwidth and Network Transmission bandwidth, thereby provide the certainty service quality guarantee for key network storage application.
The structural representation of the system that Fig. 1 guarantees network storage service quality for the present invention, as shown in Figure 1, this system comprises: main frame 1, memory device 2 and support the network 3 of future mechanism, wherein,
Main frame 1, be used for key application program is registered, in the time satisfying the quality of service requirement of described key application program, according to default service strategy, the network 3 of future mechanism is supported in triggering and memory device 2 is respectively described key application program or the affiliated key application class of described key application program is reserved corresponding resource, and on main frame 1, reserve respective resources, establish a resource reservation path; Utilize the reserved resource of described resource reservation path correspondence on main frame 1, described key application program is handled, utilize described resource reservation path and memory device to carry out data interaction;
Network 3 is used to the resource reservation path between described key application program establishment main frame 1 and the memory device 2, realizes the transfer of data between main frame 1 and the memory device 2.
The present invention is applicable to storage area network (SAN) storage system of using the network interconnection of supporting future mechanism, Internet protocol (IP) network with iSCSI storage system in the SAN storage system and support future mechanism is an example below, and system configuration of the present invention is elaborated.Need to prove that main frame of the present invention is the start end of iSCSI storage system, memory device is the destination end of iSCSI storage system.
As shown in Figure 1, main frame 1 mainly comprises application interface module 11, QoS administration module 12 and key application program processing module 13, wherein,
Described application interface module 11 is used for identifying key application program from application program, and registers described key application program in QoS administration module 12; Resource reservation routing information according to key application program in the QoS administration module 12, judge whether to establish the resource reservation path for described key application program or with the key application class under the described key application program, if then trigger key application program processing module 13 and utilize described resource reservation path corresponding reserved resource on main frame 11 to handle described application program;
Described QoS administration module 12 comprises grader 121, scheduler 122 and controller 123,
Wherein,
Described reservation management device 1221, be used for attribute and qos parameter according to key application program, according to default resource reservation demand strategy, determine the resource reservation demand of the key application class that described key application program or described key application program are affiliated; Be used for resource state information according to explorer, can judgement satisfy the resource reservation demand of the key application class under described key application program or the described key application program, if can satisfy, then generate the reservation requests of supporting host protocol and be sent to controller 123, described reservation requests is carried the attribute and the qos parameter of key application program, wherein, comprise the storage I/O RSVP information of main frame or the storage I/O RSVP information and the network bandwidth obligate information of main frame and memory device in the described qos parameter; Reservation response message according to controller 123 transmissions, indexed resource manager 1222 is according to the resource reservation demand reserved resource of the key application class under described key application program or the described key application program, and the corresponding resource reservation of indication grader 121 records path; Be used for resource state information according to explorer 1222, judge that can the affiliated idle reserved resource of key application class in main frame 1 of described key application program satisfy the resource reservation demand of described key application program, if can not satisfy, then according to the resource reservation demand of described key application program, determine that described key application class need expand the bandwidth information of reservation, the described bandwidth information that needs to expand reservation comprises the storage I/O bandwidth information of main frame or the storage I/O bandwidth information and the corresponding network bandwidth information of main frame and memory device; Establishment is carried the reservation of described bandwidth information and is adjusted message; Adjust response message according to the reservation that controller 123 sends, indexed resource manager 1222 carries out resource reservation according to the resource reservation expansion demand of described key application class; According to default maintenance period,, safeguard in the grader 121 the resource reservation path that success is established by periodically the reservation requests of described support host protocol being sent to controller 123;
Described explorer 1222, the reserved resource information that is used for preserving main frame 1 manages the resource of main frame 1, sends resource state informations to reservation management device 1221; Resource reservation is carried out in indication according to reservation management device 1221;
Key application program processing module 13, be used to utilize the reserved resource of key application program on main frame 1, described key application program or the key application program similar with described key application program are handled, and the resource reservation path of the data that needs are transferred to memory device 2 by key application program sends to memory device 2; Utilize the controller 123 in the QoS administration module 12 that the iSCSIPDU that generates is converted into the network protocol data unit of supporting future mechanism, and utilize and support the network of future mechanism to send to memory device 2.
Key application program processing module 22 is used for the explorer 2122 by query scheduling device 212, determines reserved resource corresponding on memory device 2 according to the resource reservation path of transmission data; Utilize reserved resource that the data that controller sends are handled, the new data that obtain after utilizing the controller 211 of QoS administration module 21 to handle are converted to the network protocol data unit of supporting future mechanism, by the network of supporting future mechanism described network protocol data unit are sent to main frame 1.
Described network 3 is used for establishing or the maintenance resources reserved path according to reservation requests, is used for according to reserving adjustment message the resource reservation path of having established being expanded.
At the above-mentioned system that guarantees network storage service quality, the present invention also proposes a kind of method that guarantees network storage service quality.This method mainly comprises as shown in Figure 2:
In actual applications, in main frame, register before the key application program, main frame need be according to default key application program division rule, attribute information and qos parameter according to application program, judge whether application program is key application program, so that in subsequent step, carry out the reservation of resource, to ensure the service quality of key application program at key application program.
Described in main frame the key application program of registration be the attribute and the qos parameter of recorded key application program in main frame.Described qos parameter comprises the storage I/O RSVP information of main frame at least, like this, can in subsequent step, determine the storage I/O RSVP information and the network bandwidth obligate information of corresponding memory device, to be implemented in the resource reservation on network and the memory device according to this storage I/O RSVP information.
In actual applications, can also in this registration process, determine the storage I/O RSVP information and the network bandwidth obligate information of corresponding memory device, and it is kept in the main frame as qos parameter, corresponding, described in main frame the key application program of registration further comprise:
Main frame is determined the storage I/O RSVP information and the network bandwidth obligate information of memory device according to the attribute of key application program, and is recorded in the main frame as the qos parameter of described key application program,
Like this, in follow-up step, directly these qos parameters are carried at the message that is used for setting up reserved path, the storage I/O RSVP information and the network bandwidth obligate information of memory device can be notified to memory device and network, so that be implemented in the resource reservation on network and the memory device.
In actual applications, Yu She service strategy can have two kinds:
A kind of is to be the service strategy that unit carries out resource reservation with single key application program, carrying out the resource reservation needs that reserved resource can satisfy single key application program based on this service strategy gets final product, concrete resource reservation quantity is by default resource reservation demand strategy decision;
Another kind is to be the service strategy that unit carries out resource reservation with key application class, carry out the needs that reserved resource can satisfy a plurality of key application programs in the key application class based on this service strategy, concrete resource reservation quantity is by default resource reservation demand strategy decision.This strategy can allow a plurality of key application programs with certain denominator, the a plurality of key application program that promptly belongs to same key application class can be shared the resource reservation path of success establishment and the reserved resource on main frame and the memory device.
Need to prove above-mentioned default service strategy and the resource reservation demand strategy is main frame and memory device is known.
When service strategy is to be unit when carrying out resource reservation with single key application program, this step specific implementation method can for:
The attribute of recorded key application program and qos parameter in main frame comprise the storage I/O RSVP information of main frame or the storage I/O RSVP information and the corresponding network bandwidth obligate information of main frame and memory device in the wherein said qos parameter;
According to the attribute and the qos parameter of key application program,, determine the resource reservation demand of described key application program according to default resource reservation demand strategy;
Resource state information according to main frame, can judgement satisfy described resource reservation demand, if can satisfy, then generate the reservation requests of supporting host protocol, described reservation requests is carried the attribute and the qos parameter of key application program, otherwise, withdraw from the flow process of establishing the resource reservation path into key application program;
Described reservation requests is converted to the reservation requests of the Network Layer Signaling agreement of supporting future mechanism, and the network by supporting future mechanism is transferred to memory device with the reservation requests of described network enabled layer signaling protocol;
Here, through described conversion, the reservation requests of described network enabled layer signaling protocol is not only carried the attribute and the qos parameter of key application program, also will carry corresponding network bandwidth obligate information.
Need to prove, if in the process of the key application program of aforementioned registration, determined corresponding network bandwidth obligate information, be to carry this network bandwidth obligate information in the described qos parameter, then in above-mentioned transfer process, need this network bandwidth obligate information is extracted from described qos parameter, put into the reservation requests of described network enabled layer signaling protocol separately, so that network is directly reserved the corresponding network bandwidth according to the network bandwidth obligate information in this reservation requests in the subsequent step; If in the process of the key application program of aforementioned registration, do not determine corresponding network bandwidth obligate information, be not carry this network bandwidth obligate information in the described qos parameter, then in described transfer process, the storage I/O RSVP information mapping of the main frame in the qos parameter that described reservation requests need be carried becomes corresponding network bandwidth obligate information.
Here, can be according to formula Y=X*R*8, realize the mapping between storage I/O bandwidth and the corresponding network bandwidth.Wherein, X is a memory bandwidth, and unit is MB/s; Y is the network bandwidth, and unit is Mb/s; R is a proportionality coefficient, is set according to network traffics by system; X is directly proportional with Y.Conversion between the storage I/O bandwidth that relates to hereinafter and the corresponding network bandwidth all can realize according to said method, repeats no more.
The reservation requests of the described network enabled layer signaling protocol that memory device will receive is converted to the reservation requests of supporting the memory device agreement;
Here, need to prove, if comprise the storage I/O RSVP information of memory device in the described qos parameter that the reservation requests of described network enabled layer signaling protocol is carried, then in above-mentioned transfer process, need the storage I/O RSVP information of this memory device is extracted from described qos parameter, put into the reservation requests of described support memory device agreement separately; If do not carry the storage I/O RSVP information of memory device in the described qos parameter, then in described transfer process, the network bandwidth obligate information that the reservation requests of described network enabled layer signaling protocol need be carried is mapped to the storage I/O RSVP information of corresponding memory device.
Memory device according to default resource reservation demand strategy, is determined the resource reservation demand of described key application program according to the attribute and the qos parameter of the entrained key application program of the reservation requests of supporting the memory device agreement;
Resource state information according to memory device, can judgement satisfy described resource reservation demand, if can satisfy, then on memory device, reserve respective resources and the corresponding resource reservation path of record according to described resource reservation demand, generate the reservation response message of network enabled agreement, described reservation response message is transferred to main frame by the network of supporting future mechanism;
Main frame is reserved respective resources, and is write down the resource reservation routing information of described key application program according to the described reservation response message that receives and the resource reservation demand of fixed described key application program on main frame.
When service strategy for key application class being unit when carrying out the service strategy of resource reservation, this step specific implementation method can for:
Step x1, judge whether for the key application class under the described key application program carries out resource reservation, if then change step x2 over to, otherwise change step x9 over to;
Step x2, according to the attribute and the qos parameter of key application program, according to default resource reservation demand strategy, determine the resource reservation demand of described key application program;
Step x3, according to the resource state information of main frame, judge whether the idle reserved resource of described key application class in main frame can satisfy the resource reservation demand of described key application program, if can satisfy, then withdraw from the flow process in described establishment resource reservation path; Otherwise create to reserve and adjust message;
In actual applications, because a plurality of similar key application program sharing to reserved resource, may exist the idle reserved resource of described key application class in main frame can't satisfy the situation of the resource reservation demand of described key application program, at this moment, need expand described reserved resource, to satisfy the needs of described key application program.In actual applications, it mainly is expansion to storage I/O bandwidth resources, the reserved resource quantity of concrete required expansion can be determined by system, according to actual needs as long as make the reserved resource of the described key application class after the expansion can satisfy the needs of described key application program.In this step, adjust message, be initiated as the process that described key application class expands reserved resource, make described key application class obtain more reserved resource, thereby guarantee the needs of its key application program by creating to reserve.
In addition, in actual applications, the also mode that can monitor the user mode of reserved resource by main frame, the idle reserved resource of avoiding successfully carrying out the key application class of resource reservation can not satisfy the situation of its key application program needs, concrete grammar can for: when the usage ratio of the reserved resource of key application class surpasses preset threshold value, adjust message by creating to reserve, be initiated as the process that described key application class expands reserved resource, thereby the reserved resource state of described key application class is adjusted to the state that can satisfy its key application program needs.
Here, the storage I/O bandwidth information that message is carried at least needs to expand the main frame of reserving is adjusted in described reservation, can also further carry the corresponding network bandwidth information and the storage IO bandwidth information of memory device in actual applications, so that in subsequent step, do not need to store again the mapping between I/O bandwidth information and the corresponding network bandwidth information.
Step x4, message conversion is adjusted in described reservation is that message is adjusted in the reservation of network enabled layer signaling protocol, by the network of supporting future mechanism transmission of messages is adjusted in the reservation of described network enabled layer signaling protocol and given memory device, described network based described reservation is adjusted message the resource reservation path of establishing for described key application class is expanded;
Here, when described reservation adjustment message was not carried corresponding network bandwidth information, described conversion comprised that the storage I/O bandwidth information that described reservation adjustment message is carried is mapped to corresponding network bandwidth information.
The reservation of the described network enabled layer signaling protocol that step x5, memory device will receive is adjusted message conversion and is adjusted message for the reservation of supporting the memory device agreement;
Here, when described reservation adjustment message was not carried the storage I/O bandwidth information of memory device, described conversion comprised that the network bandwidth information mapping that the reservation adjustment message of described network enabled layer protocol is carried is storage I/O bandwidth information;
Step x6, memory device are adjusted the entrained needs of message according to the reservation of supporting the memory device agreement and are expanded the storage I/O bandwidth information of reserving, and determine the resource reservation expansion demand of described key application class;
Step x7, according to the resource state information of memory device, can judgement satisfy described resource reservation expansion demand, if can satisfy, then on memory device, further reserve the corresponding bandwidth resource for described key application class according to described resource reservation expansion demand, response message is adjusted in the reservation that generates the network enabled agreement, by the network of supporting future mechanism response message is adjusted in described reservation and is transferred to main frame;
Step x8, main frame are adjusted response message according to the described reservation that receives, and further reserve the corresponding bandwidth resource for described key application class on main frame; Withdraw from the flow process in described establishment resource reservation path;
Step x9, according to the attribute and the qos parameter of key application program, according to default resource requirement strategy, determine the resource reservation demand of described key application class; Resource state information according to main frame, can judgement satisfy the resource reservation demand of described key application class, if can satisfy, then generate the reservation requests of supporting host protocol, described reservation requests is carried the attribute and the qos parameter of key application program, otherwise, withdraw from the flow process of establishing the resource reservation path into key application class;
Step x10, described reservation requests is converted to the reservation requests of the Network Layer Signaling agreement of supporting future mechanism, the network by supporting future mechanism is transferred to memory device with the reservation requests of described Network Layer Signaling agreement;
Here, if include this network bandwidth obligate information in the qos parameter that described reservation requests is carried, then in above-mentioned transfer process, need this network bandwidth obligate information is extracted from described qos parameter, put into the reservation requests of described network enabled layer signaling protocol separately, if the qos parameter that described reservation requests is carried does not comprise network bandwidth obligate information, then in above-mentioned transfer process, the storage I/O bandwidth information of the main frame in the described qos parameter need be mapped to corresponding network bandwidth information.
The reservation requests of the Network Layer Signaling agreement of the described support future mechanism that step x11, memory device will receive is converted to the reservation requests of supporting the memory device agreement;
Here, if include the storage I/O RSVP information of memory device in the qos parameter that the reservation requests of the Network Layer Signaling agreement of described support future mechanism is carried, then in above-mentioned transfer process, need the storage I/O RSVP information of this memory device is extracted from described qos parameter, put into the reservation requests of described support memory device agreement separately, if qos parameter does not comprise the storage I/O RSVP information of memory device, then in above-mentioned transfer process, the network bandwidth obligate information that the reservation requests of the Network Layer Signaling agreement of described support future mechanism is carried need be mapped to the storage I/O RSVP information of corresponding memory device;
Step x12, memory device according to default resource requirement strategy, determine the resource reservation demand of described key application class according to the attribute and the qos parameter of the entrained key application program of the reservation requests of supporting the memory device agreement;
Step x13, according to the resource state information of memory device, can judgement satisfy described resource reservation demand, if can satisfy, then on memory device, reserve respective resources and the corresponding resource reservation path of record according to described resource reservation demand, generate the reservation response message of the Network Layer Signaling agreement of supporting future mechanism, described reservation response message is transferred to main frame by the network of supporting future mechanism;
Step x14, main frame are reserved respective resources, and are write down the resource reservation routing information of described key application class according to the described reservation response message that receives and the resource reservation demand of fixed described key application class on main frame.
Pass through such scheme, can be key application program or key application class establishment resource reservation path, in actual applications, according to the network needs of supporting reservation request mechanism, after described resource reservation path is successfully established, main frame needs periodically to generate reservation requests according to default maintenance period, utilizes described reservation requests to notify described network that described resource reservation path is safeguarded.
In actual applications, when main frame needs application programs to handle, at first need to judge whether pending application program is key application program earlier, if, then by inquiring about the resource reservation routing information of key application program, determine whether to establish the resource reservation path for the described key application class under described key application program or the described key application program, if, then utilize the reserved resource of described resource reservation path correspondence on main frame of having established, described key application program is handled.Like this, if pending application program is key application program, and system successfully is that the described key application class under this key application program or this key application program is established the resource reservation path, and system then can utilize this resource reservation path corresponding reserved resource on main frame or memory device that described key application program is handled.
In actual applications, when judging pending application program is nonessential application program, though perhaps be key application program fail for itself or with its under key application class when successfully establishing the resource reservation path, system can adopt common mode that these application programs are handled, promptly need to wait for earlier resource, obtain to utilize described resource that it is handled again after the respective resources.
In actual applications, if described main frame and memory device are respectively the start end and the destination end of iSCSI storage system, described network is for supporting the IP network of future mechanism, the concrete grammar of this step can for:
Main frame is that described key application program generates incident by the SCSI layer event generator of system, utilize described resource reservation path corresponding determined storage resources of reserved resource on main frame to deposit described incident, and described incident is packaged into small computer system interface control data piece SCSI CDB;
Obtain the kernel process scheduling according to described reserved resource, described SCSI CDB is packaged into Internet Small Computer Systems Interface protocol Data Unit iSCSI PDU, and it is joined in the determined reservation connection of the described reserved resource formation at the iSCSI layer;
Obtain the kernel process scheduling according to the determined bandwidth reserved information of described reserved resource; Described iSCSIPDU is mapped as the network protocol data unit of supporting future mechanism; Utilize the scheduling of described kernel process, the network protocol data unit of described support future mechanism is transferred to memory device by described resource reservation path.
It is when transmitting by the resource reservation path that step 203, memory device are judged the described data that receive, utilize described resource reservation path corresponding reserved resource on memory device that described data are handled, and utilize described resource reservation path to be transferred to main frame the new data that needs are transferred to main frame.
In actual applications, memory device needs to judge earlier that whether these data are by the transmission of resource reservation path after receiving data, if, then utilize described resource reservation path corresponding reserved resource on memory device that described data are handled, and the new data that needs is transferred to main frame send to main frame according to described resource reservation path.
The data that receive when judging are not when transmitting from the resource reservation path, then get final product according to common mode processing said data, just need the first to file resource, obtain to utilize described resource that it is handled again after the respective resources.
In actual applications, if described main frame and memory device are respectively the start end and the destination end of iSCSI storage system, described network is for supporting the IP network of future mechanism, and then the concrete grammar of this step is:
The network protocol data unit of the described support future mechanism that memory device will receive is descapsulated into iSCSI PDU;
Described iSCSI PDU is joined in the determined connection resource of described reserved resource;
With described iSCSI PDU deblocking is SCSI PDU, and described SCSI PDU is joined in the determined system resource of described reserved resource;
Utilize described kernel process scheduling that described SCSI CDB is handled, generate new SCSI CDB, described new SCSI CDB is added in the determined system resource of described reserved resource;
Described new SCSI CDB is packaged into new iSCSI PDU, and joins in the determined connection resource of described reserved resource;
Obtain the kernel process scheduling according to described reserved resource, and determine scheduling time according to the determined bandwidth resource of described reserved resource;
Convert described new iSCSI PUD the network protocol data unit of new support future mechanism to, utilize described kernel process scheduling that the network protocol data unit of described new support future mechanism is sent to main frame according to described resource reservation path.
Below by the embodiment one of the inventive method, describe the concrete grammar that guarantees network storage service quality based on the system that guarantees network storage service quality of the present invention in detail.Be example with Internet Small Computer Systems Interface iSCSI storage system among the embodiment one, network between main frame and the memory device is for supporting the IP network of future mechanism, the start end of iSCSI storage system is a main frame of the present invention, the destination end of iSCSI storage system is a memory device of the present invention, and the service strategy that is adopted is for being the service strategy that unit carries out resource reservation with single key application program.As shown in Figure 3, embodiment one mainly comprises:
As described in Figure 4, the concrete grammar of this step is:
The application interface module of step 401, main frame judges whether application program is key application program, if then execution in step 402, otherwise withdraws from described establishing resource reserved path process.
In this step, the application interface module of main frame judges according to the attribute information and the qos parameter of application program whether described application program is key application program according to the rule of prior setting.
The described key application program of registration in the grader of the application interface module of step 402, main frame in the QoS of main frame administration module, and the reservation management device in the scheduler of triggering main frame is created the reservation requests of supporting host protocol.
In this step, described in grader the described key application program of registration be: the attribute and the qos parameter of the described key application program of record in grader, and be sky with the resource reservation routing information field initialization of correspondence.
Reservation management device in the scheduler of step 403, main frame is determined the resource reservation demand of described key application program according to the attribute and the qos parameter of key application program;
Reservation management device in the scheduler of step 404, main frame is according to the resource state information in the explorer, can judgement satisfy the resource reservation demand of described key application program, if can satisfy, then execution in step 405, otherwise withdraw from described establishing resource reserved path process.
Reservation management device in the scheduler of step 405, main frame generates the reservation requests of supporting host protocol and the controller that is sent to main frame, described reservation requests is carried the attribute and the qos parameter of key application program, comprises the storage I/O RSVP information of main frame in the wherein said qos parameter.
The controller of step 406, main frame is converted to the reservation requests of network enabled layer signaling protocol with described reservation requests, and the network by supporting future mechanism is transferred to memory device with the reservation requests of network enabled layer protocol.
In this step, described conversion comprises that the storage I/O I/O bandwidth information of main frame in the qos parameter that described reservation requests is carried is mapped to corresponding network bandwidth information, so that network based this message is carried out the reservation of Internet resources.
The reservation requests of the described network enabled layer protocol that the controller of step 407, memory device will receive is converted to the reservation requests of supporting the memory device agreement, and sends to the reservation management device of the scheduler of memory device.
In this step, described conversion comprises that the network bandwidth information mapping that the reservation requests of described network enabled layer protocol is carried is the storage I/O bandwidth information of memory device, so that the reservation management device of memory device is determined the resource reservation demand and carried out corresponding resource reservation in follow-up step.
The reservation management device of step 408, memory device is determined the resource reservation demand of key application program according to the attribute and the qos parameter that receive the entrained key application program of reservation requests from the controller of memory device;
The reservation management device of step 409, memory device judges that according to the resource state information in the explorer can memory device satisfy described resource reservation demand, if can satisfy, then execution in step 409.
In actual applications, when memory device is judged can not satisfy described resource reservation demand the time, can carry the reservation response message that failure information is established in the path by sending to main frame, the notice main frame fails and carries out the reservation of resource for described key application program, also can not send and reserve response message to main frame, main frame is not received the reservation response message that memory device sends in the default time after, promptly knowing fails carries out the reservation of resource for described key application program.Here, when memory device can not satisfy described resource reservation demand, will withdraw from described establishing resource reserved path process.
The explorer of the reservation management device indication memory device of step 410, memory device is according to described resource reservation demand reserved resource, and write down described reserved resource and corresponding resource reservation path, generate the controller that the reservation response message of supporting the memory device agreement sends to memory device.
When specifically implementing this step, the reservation management device will write down described reserved resource and corresponding resource reservation path in the reserved resource and resource reservation path relation table of its preservation.
The controller of step 411, memory device is converted into the reservation response message of network enabled layer protocol with described reservation response message, and sends to main frame by the network of supporting future mechanism.
The controller of step 412, main frame converts the reservation response message of described network enabled agreement to support host protocol reservation response message, and is sent to the reservation management device in the scheduler of main frame.
The reservation response message that the reservation management device of step 413, main frame sends according to controller, indexed resource manager are according to the resource reservation demand reserved resource of key application program, and the indication grader writes down corresponding resource reservation routing information.
The explorer of step 414, main frame carries out resource reservation according to the indication of reservation management device and the resource reservation demand of key application program; The grader of main frame in the resource reservation routing information field of described key application program, writes down corresponding resource reservation routing information according to the indication of reservation management device.
As shown in Figure 5, the specific implementation method of this step is:
The application interface module of step 501, main frame is judged pending application program to be key application program and to have established the resource reservation path for described key application program, the key application program processing module that triggers main frame is utilized the reserved resource of described resource reservation path correspondence, handles described key application program.
In this step, after the application interface module of main frame is judged application program and is key application program, to determine whether to be described key application program success establishing resource reserved path by the reserved resource routing information field of key application program described in the grader of inquiry QoS administration module.If this reserved resource routing information field is empty, then judge and fail successfully to establish the resource reservation path for described key application program, like this, owing to there is not reserved resource to use, after this can only carry out the processing of application program according to existing application routine processes mode; If this information field non-NULL, then judge and successfully establish the resource reservation path for described key application program, by the routing information in described key application program and the described resource reservation routing information field being notified to the key application program processing module of main frame, trigger described key application program processing module and utilize the reserved resource of described routing information correspondence to handle described key application program afterwards.
The key application program processing module of step 502, main frame is utilized the reserved resource of described resource reservation path correspondence on main frame, described key application program is handled, and the data that needs are transferred to memory device are transferred to memory device by described resource reservation path.
The concrete grammar of this step is:
Key application program processing module is obtained from the reservation management of scheduler and the corresponding reserved resource in described resource reservation path according to the resource reservation routing information;
Key application program processing module is that described key application program generates incident by the SCSI layer event generator of system, utilize the determined storage resources of described reserved resource to deposit described incident, and described incident is packaged into small computer system interface control data piece (SCSI CDB); Obtain the kernel process scheduling according to described reserved resource, described SCSI CDB is packaged into small computer system interface protocol Data Unit (iSCSI PDU), and it is joined in the determined reservation connection of the described reserved resource formation at the iSCSI layer; Obtain the kernel process scheduling according to the determined bandwidth reserved information of described reserved resource;
Key application program processing module utilizes the controller in the QoS administration module of main frame described iSCSI PDU to be mapped as the network protocol data unit of supporting future mechanism;
Key application program processing module is utilized the scheduling of described kernel process, and the network protocol data unit of described support future mechanism is transferred to memory device by described resource reservation path.
It is data of being transmitted by the resource reservation path that the controller of step 503, memory device is judged the data that received, and described data are carried out the decapsulation operation, and sends to the key application program processing module of memory device.
In this step, the decapsulation operation by memory device is descapsulated into iSCSI PDU with the network protocol data unit of the described support future mechanism that receives.
Here, specifically how to judge that the transmission path of the data that received is as well known to those skilled in the art, be not described in detail in this.
The key application program processing module of step 504, memory device is utilized the reserved resource of described resource reservation path correspondence on memory device, described key application's data is handled, and utilized described resource reservation path to be transferred to main frame the new data that needs are transferred to main frame.
The concrete grammar of this step is:
The key application program processing module of memory device joins described iSCSI PDU in the determined corresponding resource of described reserved resource;
With described iSCSI PDU deblocking is SCSI PDU, and described SCSI PDU is joined in the determined corresponding resource of described reserved resource;
Obtain the kernel process scheduling according to described reserved resource, and determine the processing time according to the determined bandwidth resource of described reserved resource;
With described SCSI PDU deblocking is SCSI CDB, and described SCSI CDB is joined in the determined corresponding resource of described reserved resource;
Utilize described kernel process scheduling that described SCSI CDB is handled, generate new SCSI CDB, described new SCSI CDB is added in the determined corresponding resource of described reserved resource;
Described new SCSI CDB is packaged into new iSCSI PDU, and joins in the determined corresponding resource of described reserved resource;
Obtain the kernel process scheduling according to described reserved resource, and determine scheduling time according to the determined bandwidth resource of described reserved resource;
The controller that utilizes memory device converts described new iSCSI PUD the network protocol data unit of new support future mechanism to, utilizes described kernel process scheduling that the network protocol data unit of described new support future mechanism is sent to main frame according to described resource reservation path.
Pass through technique scheme, the present invention utilizes future mechanism, by corresponding QoS administration module being set respectively at main frame and memory device, realization is used resource needed to the key network storage and is reserved, thereby guaranteed that simultaneously the key network storage uses needed processing resource, therefore, can use for the key network storage deterministic service quality guarantee is provided, in addition, owing to need the key network storage number of applications of quality assurance can be not too many, therefore use future mechanism can not bring scaling concern.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a method that guarantees network storage service quality is characterized in that, this method comprises:
The key application program of registration in main frame, during the quality of service requirement of the key application class under the available resources of main frame, memory device and network all can satisfy described key application program or described key application program, according to default service strategy, the reserved resource on described main frame, memory device and network for described key application program or described key application class is established a resource reservation path;
Utilize described resource reservation path corresponding reserved resource on main frame, described key application program is handled, and the data that needs are transferred to memory device are transmitted by described resource reservation path;
It is when transmitting by the resource reservation path that memory device is judged the described data that receive, utilize described resource reservation path corresponding reserved resource on memory device that described data are handled, and the new data that needs is transferred to main frame transmit by described resource reservation path;
Described in main frame the registration key application program be:
The attribute of recorded key application program and service quality QoS parameter in main frame, described qos parameter comprise the storage I/O I/O RSVP information of main frame;
Described in main frame the registration key application program further comprise:
Main frame is determined the storage I/O RSVP information and the network bandwidth obligate information of memory device according to the attribute of key application program, and is recorded in the main frame as the qos parameter of described key application program.
2. method according to claim 1 is characterized in that, described in main frame registration further comprise before the key application program:
Main frame is according to the attribute information and the service quality QoS parameter of application program, and judging described application program is key application program.
3. method according to claim 1 is characterized in that, described service strategy is:
With single key application program is the service strategy that unit carries out resource reservation, perhaps, is the service strategy that unit carries out resource reservation with key application class.
4. method according to claim 3, it is characterized in that, when described service strategy for being that unit is when carrying out the service strategy of resource reservation with single key application program, when described available resources when main frame, memory device and network all can satisfy the quality of service requirement of described key application program, according to default service strategy, be described key application program reserved resource on described main frame, memory device and network, establish a resource reservation path and be:
According to the attribute and the qos parameter of key application program,, determine the resource reservation demand of described key application program according to default resource reservation demand strategy;
Resource state information according to main frame, can judgement satisfy described resource reservation demand, if can satisfy, then generate the reservation requests of supporting host protocol, described reservation requests is carried the attribute and the qos parameter of key application program, otherwise, withdraw from the flow process of establishing the resource reservation path into key application program;
Described reservation requests is converted to the reservation requests of the Network Layer Signaling agreement of supporting future mechanism, and the network by supporting future mechanism is transferred to memory device with the reservation requests of described Network Layer Signaling agreement;
The reservation requests of the Network Layer Signaling agreement of the described support future mechanism that memory device will receive is converted to the reservation requests of supporting the memory device agreement;
Memory device according to default resource reservation demand strategy, is determined the resource reservation demand of described key application program according to the attribute and the qos parameter of the entrained key application program of the reservation requests of supporting the memory device agreement;
Resource state information according to memory device, can judgement satisfy described resource reservation demand, if can satisfy, then on memory device, reserve respective resources and the corresponding resource reservation path of record according to described resource reservation demand, generate the reservation response message of network enabled layer signaling protocol, by the network of supporting future mechanism described reservation response message is transferred to main frame, described network based described reservation response message is reserved corresponding Internet resources;
Main frame is reserved respective resources according to the described reservation response message that receives and the resource reservation demand of fixed described key application program on main frame, determine a resource reservation path.
5. method according to claim 3, it is characterized in that, when described service strategy for being that unit is when carrying out the service strategy of resource reservation with key application class, when described available resources when main frame, memory device and network all can satisfy the quality of service requirement of described key application program, according to default service strategy, be the reserved resource on described main frame, memory device and network of the key application class under the described key application program, establish a resource reservation path and be:
X1, judge whether for the key application class under the described key application program carries out resource reservation, if then change step x2 over to, otherwise change step x9 over to;
X2, according to the attribute and the qos parameter of key application program, according to default resource reservation demand strategy, determine the resource reservation demand of described key application program;
X3, according to the resource state information of main frame, judge whether the idle reserved resource of described key application class in main frame can satisfy the resource reservation demand of described key application program, if can satisfy, then withdraw from the flow process in described establishment resource reservation path; Otherwise create to reserve and adjust message, the I/O bandwidth information that message is carried needs expansion to reserve is adjusted in described reservation, and the described I/O bandwidth information of reserving that need expand comprises the storage I/O bandwidth information of main frame or the storage I/O bandwidth information and corresponding network bandwidth information of main frame and memory device;
X4, message conversion is adjusted in described reservation adjusted message for the reservation of the Network Layer Signaling agreement of supporting future mechanism, by the network of supporting future mechanism transmission of messages is adjusted in the reservation of the Network Layer Signaling agreement of described support future mechanism and given memory device, message is adjusted in described network based described reservation, and the resource reservation path of establishing for described key application class is expanded;
The reservation of the Network Layer Signaling agreement of the described support future mechanism that x5, memory device will receive is adjusted message conversion and is adjusted message for the reservation of supporting the memory device agreement;
X6, memory device are adjusted the entrained needs of message according to the reservation of supporting the memory device agreement and are expanded the storage I/O bandwidth information of reserving, and determine the resource reservation expansion demand of described key application class;
X7, according to the resource state information of memory device, can judgement satisfy described resource reservation expansion demand, if can satisfy, then on memory device, further reserve the corresponding bandwidth resource for described key application class according to described resource reservation expansion demand, response message is adjusted in the reservation that generates the Network Layer Signaling agreement of supporting future mechanism, by the network of supporting future mechanism response message is adjusted in the reservation of described Network Layer Signaling agreement and is transferred to main frame;
X8, main frame are adjusted response message according to the described reservation that receives, and further reserve the corresponding bandwidth resource for described key application class on main frame; Withdraw from the flow process in described establishment resource reservation path;
X9, according to the attribute and the qos parameter of key application program, according to default resource requirement strategy, determine the resource reservation demand of described key application class; Resource state information according to main frame, can judgement satisfy the resource reservation demand of described key application class, if can satisfy, then generate the reservation requests of supporting host protocol, described reservation requests is carried the attribute and the qos parameter of key application program, otherwise, withdraw from the flow process of establishing the resource reservation path into key application class;
X10, described reservation requests is converted to the reservation requests of the Network Layer Signaling agreement of supporting future mechanism, the network by supporting future mechanism is transferred to memory device with the reservation requests of described Network Layer Signaling agreement;
The reservation requests of the Network Layer Signaling agreement of the described support future mechanism that x11, memory device will receive is converted to the reservation requests of supporting the memory device agreement;
X12, memory device according to default resource requirement strategy, determine the resource reservation demand of described key application class according to the attribute and the qos parameter of the entrained key application program of the reservation requests of supporting the memory device agreement;
X13, according to the resource state information of memory device, can judgement satisfy described resource reservation demand, if can satisfy, then on memory device, reserve respective resources and the corresponding resource reservation path of record according to described resource reservation demand, generate the reservation response message of the Network Layer Signaling agreement of supporting future mechanism, described reservation response message is transferred to main frame by the network of supporting future mechanism;
X14, main frame are reserved respective resources according to the described reservation response message that receives and the resource reservation demand of fixed described key application class on main frame.
6. method according to claim 1, it is characterized in that, the described described resource reservation path corresponding reserved resource on main frame that utilizes is handled described key application program, and the data that needs are transferred to memory device are transferred to memory device by described resource reservation path and are:
After main frame is judged pending application program and is key application program, determine whether to establish the resource reservation path for the key application class under described key application program or the described key application program, if, then utilize the reserved resource of described resource reservation path correspondence on main frame of having established, described key application program is handled, the data that needs are transferred to memory device send to memory device by described resource reservation path, otherwise, on main frame, apply for resource for described application program, utilize described resource that described application program is handled.
7. method according to claim 1, it is characterized in that, it is when transmitting by the resource reservation path that described memory device is judged the described data that receive, utilize described resource reservation path corresponding reserved resource on memory device that described data are handled, and utilize described resource reservation path to send to main frame the new data that needs are transferred to main frame to be:
Memory device judges that whether the described data that receive are by the transmission of resource reservation path, if, then utilize described resource reservation path corresponding reserved resource on memory device that described data are handled, and the new data that needs is transferred to main frame sends to main frame according to described resource reservation path, otherwise, on memory device, apply for resource for described data, utilize described resource that described data are handled.
8. method according to claim 1 is characterized in that,
Described network is the Internet protocol IP network;
Described main frame is the start end of Internet Small Computer Systems Interface iSCSI storage system, and described memory device is the destination end of iSCSI storage system;
The described described resource reservation path corresponding reserved resource on main frame that utilizes is handled described key application program, and the data that needs are transferred to memory device are transferred to memory device by described resource reservation path and are:
Main frame is that described key application program generates incident by the SCSI layer event generator of system, utilize described resource reservation path corresponding determined storage resources of reserved resource on main frame to deposit described incident, and described incident is packaged into small computer system interface control data piece SCSI CDB;
Obtain the kernel process scheduling according to described reserved resource, described SCSI CDB is packaged into Internet Small Computer Systems Interface protocol Data Unit iSCSI PDU, and it is joined in the determined reservation connection of the described reserved resource formation at the iSCSI layer;
Obtain the kernel process scheduling according to the determined bandwidth reserved information of described reserved resource; Described iSCSIPDU is mapped as the network protocol data unit of supporting future mechanism; Utilize the scheduling of described kernel process, the network protocol data unit of described support future mechanism is transferred to memory device by described resource reservation path.
9. method according to claim 8, it is characterized in that, the described described resource reservation path corresponding reserved resource on memory device that utilizes is handled described data, and utilizes described resource reservation path to be transferred to main frame the new data that needs are transferred to main frame to be:
The network protocol data unit of the described support future mechanism that memory device will receive is descapsulated into iSCSI PDU;
Described iSCSI PDU is joined in the determined connection resource of described reserved resource;
With described iSCSI PDU deblocking is SCSI CDB, and described SCSI CDB is joined in the determined system resource of described reserved resource;
Utilize described kernel process scheduling that described SCSI CDB is handled, generate new SCSI CDB, described new SCSI CDB is added in the determined system resource of described reserved resource;
Described new SCSI CDB is packaged into new iSCSI PDU, and joins in the determined connection resource of described reserved resource;
Obtain the kernel process scheduling according to described reserved resource, and determine scheduling time according to the determined bandwidth resource of described reserved resource;
Convert described new iSCSI PUD the network protocol data unit of new support future mechanism to, utilize described kernel process scheduling that the network protocol data unit of described new support future mechanism is sent to main frame according to described resource reservation path.
10. a system that guarantees network storage service quality is characterized in that, this system comprises: the network of main frame, memory device and support future mechanism, wherein,
Described main frame, be used for key application program is registered, in the time can satisfying the quality of service requirement of described key application program, according to default service strategy, trigger network and memory device are that the key application class under described key application program or the described key application program is reserved corresponding resource respectively, and on main frame, reserve corresponding resource, establish a resource reservation path; Utilize the reserved resource of described resource reservation path correspondence on main frame, described key application program is handled, utilize described resource reservation path and memory device to carry out data interaction;
Described memory device is used for being the key application class reserved resource under described key application program or the described key application program according to default service strategy; Judging the data that receive is when transmitting by the resource reservation path, utilizes described resource reservation path corresponding reserved resource on memory device that described data are handled; Utilize described resource reservation path and main frame to carry out data interaction;
Described network is used to the resource reservation path between described key application program establishment main frame and the memory device, realizes the transfer of data between main frame and the memory device;
Described main frame comprises key application program processing module, application interface module and QoS administration module, wherein,
Described application interface module is used for identifying key application program from application program, and registers described key application program in the QoS administration module; Resource reservation routing information according to key application program in the QoS administration module, judge whether to establish the resource reservation path for described key application program or with the key application class under the described key application program, if then trigger key application program processing module and utilize described resource reservation path corresponding reserved resource on main frame to handle described application program;
Described QoS administration module comprises grader, scheduler and controller, wherein:
Described grader is used to write down attribute, qos parameter and the resource reservation routing information of described key application program, and the reservation management device that triggers in the scheduler is created the reservation requests of supporting host protocol;
Described scheduler comprises reservation management device and explorer, wherein,
Described reservation management device, be used for attribute and qos parameter according to key application program, according to default resource reservation demand strategy, determine the resource reservation demand of the key application class that described key application program or described key application program are affiliated; Be used for resource state information according to explorer, can judgement satisfy the resource reservation demand of the key application class under described key application program or the described key application program, if can satisfy, then generate the reservation requests of supporting host protocol and be sent to controller, described reservation requests is carried the attribute and the qos parameter of key application program, comprises the storage I/O RSVP information and the network bandwidth obligate information of storage I/O RSVP information, main frame and the memory device of main frame in the wherein said qos parameter; Reservation response message according to the controller transmission, the indexed resource manager is according to the resource reservation demand reserved resource of the key application class under described key application program or the described key application program, and the indication grader writes down corresponding resource reservation path; Be used for resource state information according to explorer, judge that can the affiliated idle reserved resource of key application class in main frame of described key application program satisfy the resource reservation demand of described key application program, if can not satisfy, then according to the resource reservation demand of described key application program, determine that described key application class need expand the bandwidth information of reservation, the described bandwidth information that needs expansion to reserve comprises the storage I/O bandwidth information of main frame, the storage I/O bandwidth information of main frame and memory device and corresponding network bandwidth information; Establishment is carried the reservation of described bandwidth information and is adjusted message; Adjust response message according to the reservation that controller sends, the indexed resource manager carries out resource reservation according to the resource reservation expansion demand of described key application class; According to default maintenance period,, safeguard in the grader resource reservation path that success is established by periodically the reservation requests of described support host protocol being sent to controller;
Described explorer, the reserved resource information that is used for preserving main frame manages the resource of main frame, sends resource state information to the reservation management device; Resource reservation is carried out in indication according to the reservation management device;
Controller is used for the reservation requests that the reservation management device sends is converted to the reservation requests of the Network Layer Signaling agreement of supporting future mechanism, and the network by supporting future mechanism is transferred to memory device with the reservation requests of network enabled layer protocol; The reservation adjustment message that message conversion is the network enabled layer signaling protocol is adjusted in the reservation that the reservation management device sends, reservation response message or the reservation adjustment response message that response message converts the support host protocol to adjusted in the reservation response message or the reservation of network enabled agreement, and be sent to the reservation management device in the scheduler; The iSCSI PDU that key application program processing module is generated changes into the network protocol data unit of supporting future mechanism, and sends to key application program processing module;
Key application program processing module, be used to utilize the reserved resource of key application program on main frame, described key application program or the key application program similar with described key application program are handled, and the resource reservation path of the data that needs are transferred to memory device by key application program sends to memory device; Utilize the controller in the QoS administration module that the iSCSI PDU that generates is converted into the network protocol data unit of supporting future mechanism, and utilize and support the network of future mechanism to send to memory device;
Described network is used for establishing or the maintenance resources reserved path according to reservation requests; Be used for the resource reservation path of having established being expanded according to reserving adjustment message.
11. system according to claim 10 is characterized in that, described memory device comprises: QoS administration module and key application program processing module, and described QoS administration module comprises controller and scheduler, wherein,
Controller, be used for the reservation requests of the described network enabled layer protocol that will receive or reserve and adjust message conversion for supporting the reservation requests of memory device agreement, and send to the reservation management device of scheduler, reservation response message or the reservation adjustment response message that response message is converted into the network enabled layer protocol adjusted in reservation response message or reservation that the reservation management device sends, and sent to main frame by the network of supporting future mechanism; Be used for identifying the data of transmitting by reserved path, operate carrying out decapsulation, and send to key application program processing module by the data of reserved path transmission from the data that receive;
Scheduler comprises reservation management device and explorer, wherein,
The reservation management device is used for the attribute and the qos parameter of the entrained key application program of the reservation requests that receives according to slave controller, according to default resource reservation demand strategy, determines the resource reservation demand of key application program; According to the resource state information in the explorer, judge that can memory device satisfy described resource reservation demand, if can satisfy, then the indexed resource manager is according to described resource reservation demand reserved resource, and write down described reserved resource and corresponding resource reservation path, generate and support the reservation response message of memory device agreement to send to controller; Adjust the entrained storage I/O bandwidth information of message according to receiving in the slave controller to reserve, can judgement carry out resource reservation according to described storage I/O bandwidth information, if can, then the indexed resource manager is the further reserved resource of described key application class according to described storage I/O bandwidth information, generates the reservation adjustment response message of supporting the memory device agreement and sends to controller;
Explorer is used for sending resource state information to the reservation management device; Indication reserved resource on memory device according to the reservation management device;
Key application program processing module is used for the explorer by the query scheduling device, determines reserved resource corresponding on memory device according to the resource reservation path of transmission data; The data of utilizing the reserved resource processing controller to send, the new data transaction that obtains after utilizing the controller of QoS administration module to handle becomes to support the network protocol data unit of future mechanism, by the network of supporting future mechanism described network protocol data unit is sent to main frame.
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| EP2852212B1 (en) * | 2012-06-12 | 2017-03-29 | Huawei Technologies Co., Ltd. | Method, system and device for processing data packet |
| CN103605543B (en) * | 2013-11-19 | 2017-06-06 | 北京国双科技有限公司 | Checking attribute conversion method and device |
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