CN101753411B

CN101753411B - Method for retrieving disc information of storage area network

Info

Publication number: CN101753411B
Application number: CN2008101802199A
Authority: CN
Inventors: 刘庆彪; 陈玄同
Original assignee: Inventec Corp
Current assignee: Hunan Zhongke Electric Co., Ltd.
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2012-04-18
Anticipated expiration: 2028-11-28
Also published as: CN101753411A

Abstract

The invention discloses a method for retrieving the disc information of a storage area network, applied to retrieving disc information to a specific disc device when a large amount of data is accessed in the disc device of the storage area network. The retrieving method comprises the following steps of: storing the disc information of the disc device in a buffer zone; detecting the accessing flow of the disc device; obtaining disc information from the buffer zone; analyzing the information attribute of a disc information; when the accessing flow of the disc device reaches a critical threshold value and the information attribute of the disc information is transaction information, extracting corresponding disc information from the buffer zone and replying to a request end; and when the accessing flow of the disc device is lower than the critical threshold value, obtaining corresponding disc information from the disc device so as to update the record in the buffer zone. The invention can reduce access load to the disc device and achieve the purpose of real-time response when the storage area network is accessed in high flow.

Description

The acquisition method of the disc information of storage area network

Technical field

The present invention relates to a kind of acquisition method of disc information, particularly a kind of acquisition method of disc information of storage area network.

Background technology

Enterprise is when construction internal reservoir network; Usually can select directly to connect and store (Direct AccessStorage; Abbreviation DAS), network-attached storage (Network Attached Storage; Be called for short NAS) come collocation each other with the solution of storage data with storage LAN (Storage Area Network is hereinafter to be referred as SAN).

Wherein, SAN is from independent another network that becomes of LAN with many storage devices.The characteristic of SAN is to realize that the high speed of multi-to-multi between server and entity storage device is connected.SAN adopts fiber channel (Fibre Channel) and server to link more, and its connected mode reconnects fibre switch for after installing fiber channel card (FC HBA) in the server, is connected to entity storage device at last again.

The data transfer mode of SAN adopts block (block) level, and the mode to manage concentratedly.Because data are to be stored in the logical unit number (Logic unit number is hereinafter to be referred as LUN), and come the access of keyholed back plate data through lock management person (Lock Manager).So, need just can carry out the access of file through server if desire these data of access.Such practice can avoid same file by the read-write with the time, to reduce the version of different files.

For accelerating to read the speed of file data, can in server, utilize the mode of getting storage (cache) soon to reduce to entity storage device read-write number of times from server.Storing the partial document data in the entity storage facilities in the high-speed cache, it is called gets copy soon.Though it is less to get the formation scale of storage soon, get soon that to store access speed very fast.

Though SAN can provide access usefulness at a high speed, SAN still is subject to the influence of Network Transmission and produces the problem that data packet is jammed.For instance, as SAN again behind the package of receipt source end, SAN can utilize different on-line communication (session) that the data packet that is received is handled.Though this practice provides a kind of parallel processing mode.But SAN then can cause single on-line communication the phenomenon of traffic congestion to occur if effectively when the distribute data package is handled in each on-line communication.

Summary of the invention

In view of above problem; Main purpose of the present invention is to provide a kind of acquisition method of disc information of storage area network; The disk set that is applied to storage area network (storage area network) is in a large number by access data the time, to particular disk device acquisition disc information.

For reaching above-mentioned purpose; The acquisition method of the disc information of the disclosed storage area network of the present invention may further comprise the steps: judge whether deposited disc information in the buffering area; Do not deposit disc information if having in this buffering area, then obtain a disc information of a disk set; The disc information of disk set is deposited in the buffering area; Detect the access flow of disk set; From buffering area, obtain disc information; Set critical threshold value; Analyze the information attribute of disc information; When the information attribute that reaches critical threshold value and disc information when the access flow of disk set is unusual action information; Then by reading corresponding this disc information in the buffering area and it being replied to this request end, wait for after the access flow is less than critical threshold value again reading disk information and upgrade the disc information in the buffering area.

According to embodiments of the invention, when the high flow capacity access, can reduce access load to disk set for storage area network.And according to different disc informations, from the buffering area of disk set, extract corresponding information response again, to reach the target of real-time response to the request end.

About characteristic of the present invention and real the work, cooperate diagram to make most preferred embodiment now and specify as follows.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the operation workflow sketch map of unusual action information update module of the present invention;

Fig. 3 is the detailed operation sketch map of information attribute;

Fig. 4 is the running sketch map of fix information update module.

Wherein, Reference numeral:

110 request ends, 120 storage area networks

121 main disc information module 122 flow detection modules

123 fix information update module, 124 unusual action information update module

125 buffering areas

Embodiment

Please refer to shown in Figure 1ly, it is a structural representation of the present invention.In structure of the present invention, have request end 110 and storage area network 120 at least.Request end 110 can be personal computer or other calculator device to storage area network 120 transmission requests.In storage area network 120 of the present invention, also have main disc information module 121, flow detection module 122, fix information update module 123, unusual action information update module 124, with buffering area 125.Main disc information module 121 is in order to provide each item disc information in the storage area network to the request end.Buffering area 125 is connected between main disc information module 121, fix information update module 123 and the unusual action information update module 124.Buffering area 125 is in order to deposit the disc information of storage area network.Fix information update module 123 is in order to the fix information of stored disk device.Wherein, fix information be respectively disk set sequence number, disk path, magnetic track quantity, number of sectors, disk size or self-monitoring analysis report (Self-Monitoring AnalysisReporting Technology, S.M.A.R.T.).In other words, fix information is not for changing the attribute information that causes change because of the entity of disk set.For example, to storage area network 120 increase newly/when removing disk set, such action can change the sum of disk set.Therefore the sum of number of disks is a fix information with regard to not belonging to, but belongs to unusual action information.Unusual action information update module 124 is in order to the unusual action information of stored disk device.Wherein, unusual action information be that hot plug disk set, disk set read-write failure, the flying height of creating the magnetic head of redundant array of inexpensive disk, disk set, data output usefulness occur, rotate start-up time, reconfigure sector data, seek fault rate under normal condition, hunting time usefulness, rotation trial technology or disk tester number of retries.

Please refer to shown in Figure 2ly, it is the operation workflow sketch map of unusual action information update module of the present invention.Include the following step in the operation workflow of unusual action information update module 124 in the present invention:

Set critical threshold value (step S210).Critical threshold value can be according to the access flow of storage area network 120 as the foundation of setting.For instance, total access flow of storage area network 120 is 1 (gigabits/sec), and setting its critical threshold value is 80%.In other words, when the access load of storage area network 120 greater than 800 (megabytes/sec), then represent the access flow to surpass the critical threshold value that sets.

Judge and whether deposited disc information (step S220) in the buffering area;

Do not deposit disc information if having in the buffering area, then obtain the disc information of disk set, and it is deposited to buffering area (step S221);

From buffering area, obtain disc information (step S230), it is according to the information request of obtain from the request end, in order to the disc information of acquisition disk set;

The flow detection module judges whether the access flow reaches critical threshold value (step S240);

When the access flow of disk set does not reach critical threshold value, then from disk set, capture corresponding disc information, and reply examining report and give request end (step S250);

When the access flow of disk set reaches critical threshold value, from buffering area, read corresponding disc information, and according to corresponding handle (the step S260) of the information attribute decision of disc information; And

Disc information according to step S250 and step S260 are obtained upgrades the reformation disc information (step S271) in the buffering area.At last, set up disk error file (step S272), in order to write down the error message of each disk.

Further comprising the steps of in step S250, and please cooperate shown in Figure 3ly, it is the detailed operation sketch map of information attribute: the information attribute of judge disk information (step S251).When the information attribute that reaches critical threshold value and disc information when the access flow of disk set is unusual action information; Then from buffering area, obtain the unusual action information of disk set, and when access flow subcritical threshold value, upgrade the record (step S252) of buffering area according to new unusual action information.When the information attribute that reaches critical threshold value and disc information when the access flow of disk set is fix information, then directly by reading required disc information in the disk set and it being returned back to request end (step S253).

In step S260 of the present invention, can also obtain the unusual action information of disk set through the mode of finger daemon (daemon).For at the access flow during, upgrading unusual action information in the buffering area 125 less than critical threshold value, please cooperate with reference to shown in Figure 4, it is the running sketch map of fix information update module.Judge whether to obtain the fix information (step S2611) of disk; Under the situation of obtaining fix information, judge whether the access flow reaches critical threshold value (step S2612); When the access flow surpasses critical threshold value, then obtain the fix information of disk set and deposit it in the buffering area (step S2613).

Various embodiment of the present invention when the high flow capacity access, can reduce the access load to disk set for storage area network 120.And according to different disc informations, from the buffering area 125 of disk set, extract corresponding information response to request end 110 again, use the target of the response that reaches real-time.

Claims

1. the acquisition method of the disc information of a storage area network, the disk set that is applied to storage area network to particular disk device acquisition disc information, is characterized in that this acquisition method includes in a large number by access data the time:

Judge whether deposited disc information in the buffering area, do not deposit disc information, then obtain a disc information of a disk set if having in this buffering area;

The disc information of this disk set is deposited in the buffering area;

Detect the access flow of this disk set;

Set a critical threshold value;

From buffering area, obtain disc information, it is according to the information request from a request end, in order to capture this disc information of this disk set;

Analyze an information attribute of this disc information; And

When this information attribute that reaches this critical threshold value and this disc information when the access flow of this disk set is a unusual action information; Then, wait for after the access flow is less than this critical threshold value and read this disc information again and upgrade this disc information in this buffering area by reading corresponding this disc information in this buffering area and it being replied to this request end.

2. the acquisition method of the disc information of storage area network as claimed in claim 1 is characterized in that, the fix information in this disc information is disk sequence number, disk path, magnetic track quantity, number of sectors, disk size or self-monitoring analysis report.

3. the acquisition method of the disc information of storage area network as claimed in claim 1; It is characterized in that; When the access flow of this disk set does not reach this critical threshold value, then according to information request by the corresponding information of acquisition in this disk set, and reply examining report and give this request end.

4. the acquisition method of the disc information of storage area network as claimed in claim 1; It is characterized in that; When this information attribute that reaches this critical threshold value and this disc information when the access flow of this disk set is a fix information, this disc information of acquisition and reply examining report and give this request end from this buffering area then.

5. like the acquisition method of the disc information of claim 3 or 4 described storage area networks, it is characterized in that, reply again and more comprise after this examining report is given the request end:

Set up a disk error file, in order to write down the error message of each this disk.