CN102780761B - A kind of IP SAN implementation method based on SSD, system and server - Google Patents
A kind of IP SAN implementation method based on SSD, system and server Download PDFInfo
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Abstract
The present invention is applicable to solid state storage technologies field, do you provide a kind of IP based on SSD? SAN implementation method, system and server, this implementation method comprises: the data operation request that application program is initiated is converted to the discernible formatted request of SSD controller by application server, and adds that TCP/IP heading forms network control order and is sent to data server; After data server receives network control order, send to described SSD controller after the TCP/IP heading removing described network control order is reverted to the discernible formatted request of SSD controller, SSD controller performs corresponding data manipulation and returns corresponding operation information.Whereby, the present invention can save the processing time of data operation commands, improves treatment effeciency, reduces system consumption.
Description
Technical field
The present invention relates to solid state storage technologies field, particularly relate to a kind of IPSAN implementation method based on SSD, system and server.
Background technology
Along with Flash(flash memory) storage chip capacity rises and the decline of price, and making to realize Large Copacity solid state hard disc by Flash memory chip becomes possibility.SSD(solidstatedisk, solid state hard disc) high-performance, high reliability make solid state hard disc become enterprise-level store in new highlight.Simultaneously the controller of solid state hard disc is by realizations such as software, firmware and logics, arbitrarily can customize read write command form, makes the application scheme of solid state hard disc can be more flexible.
At existing IPSAN(Internetprotocolstorageareanetwork, Ethernet storage area network) in scheme, the general conventional hard that adopts is as storage medium.And conventional hard only supports the order of reference format, as SCSI(SmallComputerSystemInterface, small computer system interface) order, that therefore IPSAN transmits is iSCSI(InternetSmallComputerSystemInterface, Internet Small Computer Systems Interface) order.And at existing employing solid state hard disc as in the IPSAN scheme of storage medium, also adopt traditional mode of operation.As shown in Figure 1, when application server carries out reading and writing data, its concrete job step is its mode of operation:
Application program on application server carries out read-write operation (initiation read-write requests); Read-write requests is converted to the reference format that operating system can identify, as request or bio by file system or database module; Request or bio becomes SCSI format command through scsi system; SCSI format command adds TCP/IP(TransmissionControlProtocol/InternetProtocol by iSCSI starter, transmission control protocol) heading, now order becomes the scsi command containing network message head, i.e. iSCSI format command; ISCSI order, through Ethernet, is transferred to data server end; The iSCSI order received is removed TCP/IP heading by the iscsi target device of data server end, and now order becomes again as scsi command; SCSI sends to SSD to drive by SCSI subsystem; SSD drives and scsi command is converted into the form that SSD controller can identify and is handed down to SSD controller, and so far, a read-write requests just issues and completes.After request issues, data server can return a response to application server and represent that whether read-write is successful, if the words of read request also can take back the data needing to read.Concrete steps comprise: SSD controller returns response and drives to SSD; SSD drives and this response is returned to scsi system; After iscsi target device receives response, it is added TCP/IP heading, send to iSCSI starter through Ethernet; Response is returned to scsi system by iSCSI starter; Response is returned to file system or database by scsi system; Response is returned to application program by file system or database.In this scenario, need when reading and writing data request issues and completes to be converted into scsi command through SCSI subsystem, system consumption is larger.
In summary, obviously there is inconvenience and defect in actual use in existing IPSAN, so be necessary to be improved.
Summary of the invention
For above-mentioned defect, the object of the present invention is to provide a kind of IPSAN implementation method based on SSD, system and server, the processing time of data operation commands can be saved, improve treatment effeciency, reduce system consumption.
To achieve these goals, the invention provides a kind of IPSAN implementation method based on SSD, described method comprises:
Based on an IPSAN implementation method of SSD, it is characterized in that, described method comprises:
The data operation request that application program is initiated is converted to the discernible formatted request of SSD controller by application server, and adds that TCP/IP heading forms network control order and is sent to data server;
After data server receives network control order, send to described SSD controller after the TCP/IP heading removing described network control order is reverted to the discernible formatted request of SSD controller, SSD controller performs corresponding data manipulation and returns corresponding operation information.
According to implementation method of the present invention, " data operation request that application program is initiated is converted to the discernible formatted request of SSD controller by application server " is specially:
Data operation request application program initiated by application server is converted to the discernible reference format request of operating system by file system or database, and described reference format request is request, bio or IRP.
According to implementation method of the present invention, described in be that Xi'an method also comprises:
The operation information that described SSD controller returns is added TCP/IP heading by described data server, and sends to described application server;
After application server receives described operation information, after removing TCP/IP heading, return to described application program.
According to implementation method of the present invention, also comprise before the step of " data operation request that application program is initiated is converted to the discernible formatted request of SSD controller by application server ": the form of SSD controller customization data operation requests.
The present invention is corresponding provides a kind of IPSAN based on SSD to realize system, IP storage area network comprises application server and data server, described application server comprises: routine interface, is transmitted to format converting module for data operation request application program initiated; Format converting module, for being converted to the discernible formatted request of SSD controller by described reading and writing data request; Starter, for adding that by discernible for described SSD controller formatted request TCP/IP heading forms network control order; First network protocol stack, for described network control order is sent to data server,
Described data server comprises: second network protocol stack, for receiving the network control order from described application server, and sends to object machine; Object machine, the TCP/IP heading for removing described network control order is reverted to the discernible formatted request of described SSD controller, and is transmitted to SSD controller; SSD controller, for performing corresponding data manipulation according to described data operation request and returning corresponding operation information.
System is realized according to of the present invention, described format converting module is file system or the database of operating system, data operation request for application program being initiated by application server is converted to the discernible reference format request of operating system by file system or database, and described reference format request is request, bio or IRP.
Realize system according to of the present invention, the operation information of described data server also for described SSD controller being returned adds TCP/IP heading, and sends to described application server; Described application server also for after receiving described operation information, returns to described application program after removing TCP/IP heading.
Realize system according to of the present invention, the SSD controller of described data server also comprises form customized module, for the form of customization data operation requests.
The present invention also provides a kind of application server, for IP storage area network, described IP storage area network comprises application server and data server, and described application server comprises: routine interface, and the data operation request for application program being initiated is transmitted to file system or database; Format converting module, for being converted to the discernible formatted request of SSD controller by described reading and writing data request; Starter, for adding that by discernible for described SSD controller formatted request TCP/IP heading forms network control order; First network protocol stack, for being sent to data server by described network control order.
The present invention also provides a kind of data server, for IP storage area network, described IP storage area network comprises application server and data server, described data server comprises: second network protocol stack, for receiving the network control order from described application server, and send to object machine; Object machine, the TCP/IP heading for removing described network control order is reverted to the discernible formatted request of described SSD controller, and is transmitted to SSD controller; SSD controller, for performing corresponding data manipulation according to described data operation request and returning corresponding operation information.
The present invention is by after data operation request is converted to the discernible formatted request of SSD controller by application server end, directly add that TCP/IP heading forms network control order and is sent to data server, after data server termination receives network control order, be transmitted to SSD controller removed the TCP/IP heading of network control order by object machine after, SSD controller performs corresponding data manipulation and returns corresponding operation information.The solution of the present invention does not need, through SCSI subsystem, reference format request is converted into scsi command, thus the read-write requests of application server and data server and response can without scsi systems.Thus save the time of data operation commands process, improve treatment effeciency, reduce system consumption.Whereby, the present invention can save the processing time of data operation commands, improves treatment effeciency, reduces system consumption.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the mode of operation of existing IPSAN;
Fig. 2 is the principle assumption diagram that a kind of IPSAN based on SSD of the present invention realizes system;
Fig. 3 is the flow chart of a kind of IPSAN implementation method based on SSD of the present invention;
Fig. 4 is the flow chart of the specific embodiment of a kind of data read-write operation in the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 2, a kind of IPSAN based on SSD of the present invention realizes system 100, IP storage area network and comprises application server 10 and data server 20, and application server 10 is connected with data server 20 by Ethernet.This Operation system setting software unit in application server 10 and data server 20, hardware cell or software and hardware combining unit.
Application server 10 comprises routine interface 11, format converting module 12, starter 13 and first network protocol stack 14.
Routine interface 11, for the reading and writing data request forward of application program being initiated to format converting module 12.File system is method and the data structure of the file of operating system on clear and definite disk or subregion of server.
Format converting module 12, for being converted to the discernible formatted request of SSD controller by reading and writing data request.Preferably, this format converting module 12 is file system on server or database, is converted to the discernible reference format request of operating system for data operation request application program initiated by application server by file system or database.This reference format request is the request command form that Linux system can identify, as request, bio etc.; Or be the discernible request command form of windows system, as IRP(IOrequestpackage, I/O request bag) etc.Reading and writing data request is converted to extended formatting, not necessarily needs by operating system identification, as long as this formatted request comprises the following key message relevant with operation: the address, read-write length etc. of read-write object (i.e. which dish), read-write.This format converting module 12 can be the software unit being arranged on server, hardware cell or software and hardware combining unit.
Starter 13, for adding that by discernible for SSD controller formatted request TCP/IP heading forms network control order and is sent to data server.Request is Request or bio is in a standard format example, Request or bio is through starter, starter adds TCP/IP heading to them, now order becomes request or bio containing network message head, be referred to as network control order (internetcommand), network control order contains TCP/IP heading, can transmit through Ethernet.
First network protocol stack 14, for by network control command transfer to data server 20.
Data server 20 comprises second network protocol stack 21, object machine 22 and SSD controller 24.
Second network protocol stack 21, for receiving from data server 20 network control order.
Object machine 22, the TCP/IP heading for removing network control order is reverted to the discernible formatted request of SSD controller, and is transmitted to SSD controller 24.
SSD controller 24, for performing corresponding data read-write operation according to described data operation request and returning corresponding operation information.SSD controller 24 comprises hardware (control chip), firmware (operates in the code on chip, i.e. firmware) or logic (being generally FPGA, programmable gate circuit), wherein, hardware is required, as long as firmware and logic one just can operate control chip.
Wherein, data server 20 also comprises SSD and drives 23, SSD to drive 23 to operate in the operating system of data server 20, allows operating system can identify SSD controller 24.Request for being sent by object machine 22 is handed down to SSD controller 24.
As shown in Figure 1, after data server 20 completes data operation request, also need to return operation information to application server 10, such as: whether read-write is successful, if the words of read request also can return the data needing to read.Therefore, the operation information of data server 20 also for SSD controller 24 being returned adds TCP/IP heading, and sends to application server 10; Application server 10 also for after receiving operation information, removes TCP/IP heading and returns to application program.Its specific implementation process is as follows: SSD controller 24 returns read-write whether success and data (if read data request) return to SSD driving 23; SSD drives 23 operation information is returned to object machine 22; After object machine 22 receives operation information, it is added TCP/IP heading, send to the starter 13 of application server through Ethernet; This operation information is returned to format converting module 12 by starter 13; Response is returned to routine interface 11 by format converting module 12.
Because the order of reference format generally only supported by traditional hard disk, as scsi command, what therefore IPSAN transmits is iSCSI order; SSD controller 24 can customization data operation requests command format, as long as comprise enough information (as: information such as read/write address, length, memory address), so not necessarily transmit iSCSI when transmitting, can only transmit the discernible formatted request order of SSD controller 24 adding TCP/IP heading in the present invention.
Certainly because SSD controller 24 can customization data operation requests command format, the data operation request command format that the order of transmission between data server 20 and application server 10 adopts SSD controller 24 to customize can also be made.Thus the SSD controller 24 of data server 20 also can comprise form customized module, for the command format of customization data operation requests; The form that the format converting module 12 of application server operationally customizes according to SSD controller 24 is changed.
The present invention is by after data operation request is converted to the discernible formatted request of SSD controller by application server end, directly add that TCP/IP heading forms network control order and is sent to data server, after data server termination receives network control order, be transmitted to SSD controller removed the TCP/IP heading of network control order by object machine after, SSD controller performs corresponding data manipulation and returns corresponding operation information.The solution of the present invention does not need, through SCSI subsystem, reference format request is converted into scsi command, thus the read-write requests of application server and data server and response can without scsi systems.Thus save the time of data operation commands process, improve treatment effeciency, reduce system consumption.Whereby, the present invention can save the processing time of data operation commands, improves treatment effeciency, reduces system consumption.
As shown in Figure 3, the present invention is corresponding provides a kind of IPSAN implementation method based on SSD, and it is realized by the system shown in Fig. 2, and the method comprises the steps:
Step S301, the data operation request that application program is initiated is converted to the discernible formatted request of SSD controller by application server, and adds that TCP/IP heading forms network control order and is sent to data server.The discernible formatted request of SSD controller can be the formatted request of SSD customization or existing reference format request, the request command form that this reference format request can identify as Linux system, request, bio etc.; Or be the discernible request command form of windows system, as IRP(IOrequestpackage, I/O request bag) etc.The discernible formatted request of SSD controller need comprise following key message: the address, read-write length etc. of read-write object (i.e. which dish), read-write.This step is realized by application server 10.
Step S302, after data server receives network control order, send to SSD controller after the TCP/IP heading removing network control order is reverted to the discernible formatted request of SSD controller, SSD controller performs corresponding data manipulation and returns corresponding operation information.Operation information is specially: whether read-write is successful, if the words of read request also can return the data needing to read.This step is realized by data server 20.
Preferably, also comprise after step S302: the operation information that SSD controller 24 returns is added TCP/IP heading by data server 20, and send to described application server 10; After application server 10 receives operation information, after removing TCP/IP heading, return to application program.
Because SSD controller 24 can customization data operation requests command format, the data operation request command format that the order of transmission between data server 20 and application server 10 adopts SSD controller 24 to customize also can be made.Preferably, also comprised before step S301: the command format of SSD controller customization data operation requests, this step is realized by the form customized module of SSD controller 24; Also comprise in step S301: the data operation request command format by the format conversion of described reference format request being SSD controller customization, this step is realized by the format converting module of starter 13.
Fig. 4 is the flow chart of the specific embodiment of a kind of data read-write operation in the present invention, and it mainly comprises the steps:
Step S401, the application program on application server carries out read-write operation.
Step S402, read-write operation request becomes through file system or database module the request command form that request or bio(linux system can identify, comprises following information: the address of read-write object, read-write and read-write length etc.).In the present embodiment, application server and data server all adopt linux operating system.
Step S403, starter adds TCP/IP heading to Request or bio, becomes iCMD(internetcommand, network control) order.Now order becomes request or bio containing network message head, just can transmit through Ethernet.
Step S404, iCMD order is transferred to data server by Ethernet.
Step S405, the iCMD order received is removed TCP/IP heading by the object machine of data server end, and order becomes again as request or bio.
Step S406, SSD drive and request or bio are converted into the form that SSD controller can identify and are handed down to SSD controller.So far, a read-write requests just completes, and after request issues, data server can return a response to apps server and represent that whether read-write is successful, if the words of read request also can take back the data needing to read.
Step S407, by read-write, success and data return to SSD driving to SSD controller.
Step S408, SSD drive by read-write whether successfully and data return to object machine.
Step S409, adds TCP/IP heading by it after object machine receives response, sends to the starter of application server through Ethernet.
Step S410, response is returned to file system or database by the starter of application server.
Step S411, response is returned to application program by file system or database.
As can be seen from above-described embodiment, the present invention compares with traditional IPSAN scheme, read-write requests and the response of application server 10 and data server 20 can without scsi systems, at too transfers on network is iCMD order, thus can save the processing time of order in scsi system in reading and writing data process.
The present invention also provides a kind of application server, and for IP storage area network, IP storage area network comprises application server and data server, and application server comprises:
Routine interface, the data operation request for application program being initiated is transmitted to file system or database;
Format converting module, for being converted to the discernible formatted request of SSD controller by described reading and writing data request;
Starter, for adding that by discernible for described SSD controller formatted request TCP/IP heading forms network control order;
First network protocol stack, for being sent to data server by described network control order.
The present invention also provides a kind of data server, and for IP storage area network, IP storage area network comprises application server and data server, and described data server comprises:
Second network protocol stack, for receiving the network control order from described application server, and sends to object machine;
Object machine, the TCP/IP heading for removing described network control order is reverted to the discernible formatted request of described SSD controller, and is transmitted to SSD controller;
SSD controller, for performing corresponding data manipulation according to described data operation request and returning corresponding operation information.
In sum, the present invention is by after data operation request is converted to the discernible formatted request of SSD controller by application server end, directly add that TCP/IP heading forms network control order and is sent to data server, after data server termination receives network control order, be transmitted to SSD controller removed the TCP/IP heading of network control order by object machine after, SSD controller performs corresponding data manipulation and returns corresponding operation information.The solution of the present invention does not need, through SCSI subsystem, reference format request is converted into scsi command, thus the read-write requests of application server and data server and response can without scsi systems.Thus save the time of data operation commands process, improve treatment effeciency, reduce system consumption.Whereby, the present invention can save the processing time of data operation commands, improves treatment effeciency, reduces system consumption.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.
Claims (8)
1. based on an IPSAN implementation method of SSD, it is characterized in that, described method comprises:
The data operation request that application program is initiated is converted to the discernible formatted request of SSD controller by application server, and adds that TCP/IP heading forms network control order and is sent to data server;
After data server receives network control order, send to described SSD controller after the TCP/IP heading removing described network control order is reverted to the discernible formatted request of SSD controller, SSD controller performs corresponding data manipulation and returns corresponding operation information;
" data operation request that application program is initiated is converted to the discernible formatted request of SSD controller by application server " is specially:
The data operation request that application program is initiated by application server is converted to the discernible reference format request of operating system by file system or database, and described reference format request is request, bio or IRP.
2. implementation method according to claim 1, is characterized in that, described method also comprises:
The operation information that described SSD controller returns is added TCP/IP heading by described data server, and sends to described application server;
After application server receives described operation information, after removing TCP/IP heading, return to described application program.
3. implementation method according to claim 1, it is characterized in that, also comprise before the step of " data operation request that application program is initiated is converted to the discernible formatted request of SSD controller by application server ": the form of SSD controller customization data operation requests.
4. the IPSAN based on SSD realizes a system, and IP storage area network comprises application server and data server, it is characterized in that,
Described application server comprises:
Routine interface, is transmitted to format converting module for data operation request application program initiated;
Format converting module, for being converted to the discernible formatted request of SSD controller by described data operation request;
Starter, for adding that by discernible for described SSD controller formatted request TCP/IP heading forms network control order;
First network protocol stack, for described network control order is sent to data server,
Described data server comprises:
Second network protocol stack, for receiving the network control order from described application server, and sends to object machine;
Object machine, the TCP/IP heading for removing described network control order is reverted to the discernible formatted request of described SSD controller, and is transmitted to SSD controller;
SSD controller, for performing corresponding data manipulation according to described data operation request and returning corresponding operation information;
Described format converting module is file system or the database of operating system, data operation request application program initiated for application server is converted to the discernible reference format request of operating system by file system or database, and described reference format request is request, bio or IRP.
5. according to claim 4ly realize system, it is characterized in that,
The operation information of described data server also for described SSD controller being returned adds TCP/IP heading, and sends to described application server;
Described application server also for after receiving described operation information, returns to described application program after removing TCP/IP heading.
6. according to claim 4ly realize system, it is characterized in that, the SSD controller of described data server also comprises form customized module, for the form of customization data operation requests.
7. an application server, for IP storage area network, described IP storage area network comprises application server and data server, it is characterized in that, described application server comprises:
Routine interface, the data operation request for application program being initiated is transmitted to file system or database;
Format converting module, for being converted to the discernible formatted request of SSD controller by described data operation request; And described format converting module is described file system or described database;
Starter, for adding that by discernible for described SSD controller formatted request TCP/IP heading forms network control order;
First network protocol stack, for being sent to data server by described network control order;
The discernible formatted request of described SSD controller is request, bio or IRP.
8. a data server, for IP storage area network, described IP storage area network comprises application server and data server, it is characterized in that, described data server comprises:
Second network protocol stack, for receiving the network control order from described application server, and sends to object machine;
Object machine, the TCP/IP heading for removing described network control order is reverted to the discernible formatted request of SSD controller, and is transmitted to SSD controller;
SSD controller, for performing corresponding data manipulation according to described data operation request and returning corresponding operation information;
The discernible formatted request of described SSD controller is request, bio or IRP.
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| Title |
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| 基于iSCSI协议的网络存储技术及数据布局研究;董建刚;《中国优秀硕士学位论文全文数据库 信息科技辑》;20120315(第03期);第I137-39页，正文第7－8页第2.1.1节 * |
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