CN104462240A - Method and system for realizing hierarchical storage and management in cloud storage - Google Patents
Method and system for realizing hierarchical storage and management in cloud storage Download PDFInfo
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- CN104462240A CN104462240A CN201410658010.4A CN201410658010A CN104462240A CN 104462240 A CN104462240 A CN 104462240A CN 201410658010 A CN201410658010 A CN 201410658010A CN 104462240 A CN104462240 A CN 104462240A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/18—File system types
- G06F16/185—Hierarchical storage management [HSM] systems, e.g. file migration or policies thereof
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0647—Migration mechanisms
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Abstract
The invention provides a method and system for realizing hierarchical storage and management in a cloud storage. The method includes the steps that data are stored in OSDs with data objects as units in advance, and the OSDs are classified into a first stage of storage or a second stage of storage; an access heat threshold value is preset; the access heat of the data objects in the OSDs in the first stage of storage and the access heat of the data objects in the OSDs in the second stage of storage are obtained; if the access heat of the data objects in the OSDs in the first stage of storage is lower than the access heat threshold value, the data objects are transferred to the OSDs in the second stage of storage; if the access heat of the data objects in the OSDs in the second stage of storage is higher than or equal to the access heat threshold value, the data objects are transferred to the OSDs in the first stage of storage. The method and system for realizing hierarchical storage and management in the cloud storage can simplify data processing of hierarchical storage and management in the transferring process and reduce the amount of transferred data, thereby accelerating the transferring process.
Description
Technical field
The present invention relates to cloud technical field of memory, particularly relate to during a kind of cloud stores the method and system realizing hierarchical storage management.
Background technology
Cloud storage is by functions such as cluster application, gridding technique or distributed file systems, various dissimilar memory device a large amount of in network is gathered collaborative work by application software, a system of data storage and Operational Visit function is externally provided jointly.Cloud storage is a cloud computing system being core with data store and management, and storage resources is put into for people's access on cloud by it, and user can at any time, Anywhere, to be connected on cloud access data easily through any web-enabled device.
Cloud storage system needs a large amount of disks to build.Because different disk is being read and write speed, reliability, capacity, there is very large difference in price, cloud storage system is selected to take into account whole system performance and cost by graded memory management system, makes the mass-storage system of structure have higher cost performance.
Existing hierarchical stor carries out the migration of data usually in units of file, at large files, such as, under being greater than the applied environment of 1GB, take file as the operating pressure that the migration of granularity can increase on the one hand whole storage system, on the other hand, because the time expended at transition process is longer, transition process can be made to become complicated.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides during a kind of cloud stores the method and system realizing hierarchical storage management, hierarchical storage management process to data in transition process can be simplified, reduce the data volume of migration, thus accelerate transition process.
In order to reach the object of the invention, the invention provides during a kind of cloud stores the method realizing hierarchical storage management, described cloud stores and at least comprises one-level storage and secondary storage, described method comprises: data stored in object storage device OSD in units of data object in advance, is divided into by OSD in the storage of described one-level or described secondary storage; Pre-set access temperature threshold values; Obtain the access temperature of data object in the storage of described one-level and described secondary storage OSD; If described one-level stores in OSD there is the data object of access temperature lower than access temperature threshold values, described access temperature is moved in described secondary storage OSD lower than the data object of accessing temperature threshold values; If there is the data object of access temperature greater than or equal to access temperature threshold values in described secondary storage OSD, the data object of described access temperature greater than or equal to access temperature threshold values is moved in described one-level storage OSD.
Further, described OSD is divided into described one-level store or described secondary storage comprise: according to the readwrite performance of described OSD storage medium, OSD is divided into described one-level store or described secondary storage in.
Further, the described load performance according to OSD, OSD is divided into described one-level to store or described secondary storage comprises: the readwrite performance of described storage medium is divided into one-level greater than or equal to the OSD of preset value and stores, the readwrite performance of storage medium is divided into secondary storage lower than the OSD of preset value.
Further, pre-set access temperature threshold values described in comprise: based on access strategy, pre-set access temperature threshold values; Described access temperature threshold values comprises one in access time section, access frequency value, access times value and object properties or combination in any.
Further, the described one-level of described acquisition stores and the access temperature of data object in described secondary storage OSD, comprising: the OSD in described one-level storage and described secondary storage obtains the access temperature of data object in this OSD respectively.
Further, the described one-level of described acquisition store and in described secondary storage OSD data object access temperature after, also comprise: judge described one-level stores in OSD whether there is access temperature lower than the data object of accessing temperature threshold values; If described one-level stores in OSD there is the data object of access temperature lower than access temperature threshold values, using OSD minimum for load in described secondary storage as migration target OSD, and the data object of described access temperature lower than access temperature threshold values is moved in the migration target OSD of described secondary storage.
Further, the described one-level of described acquisition store and in described secondary storage OSD data object access temperature after also comprise: judge whether to exist in described secondary storage OSD access temperature greater than or equal to the data object of accessing temperature threshold values; If there is the data object of access temperature greater than or equal to access temperature threshold values in described secondary storage OSD, using OSD minimum for load in described one-level storage as migration target OSD, and the data object of described access temperature greater than or equal to access temperature threshold values is moved in the migration target OSD of described one-level storage.
A kind of cloud realizes the device of hierarchical storage management in storing, described cloud stores and at least comprises one-level storage and secondary storage, described device comprises: pretreatment module, for in advance data being stored in units of data object in object storage device OSD, OSD is divided in the storage of described one-level or described secondary storage; Module is set, for pre-setting access temperature threshold values; Hot statistics module, for obtaining the access temperature of data object in this device; Transferring module, when there is the data object of access temperature lower than access temperature threshold values for storing in OSD in described one-level, moves in described secondary storage OSD by described access temperature lower than the data object of access temperature threshold values; When there is the data object of access temperature greater than or equal to access temperature threshold values in described secondary storage OSD, described access temperature is moved to described one-level greater than or equal to the data object of access temperature threshold values and stores in OSD.
Further, describedly arrange module, specifically for based on access strategy, pre-set access temperature threshold values, described access temperature threshold values comprises one in access time section, access frequency value, access times value and object properties or combination in any.
Further, described device also comprises: the first judge module, for judging described one-level stores in OSD whether there is the data object of access temperature lower than access temperature threshold values; Whether the second judge module, exist the data object of access temperature greater than or equal to access temperature threshold values for judging in described secondary storage OSD; Described transferring module, when there is the data object of access temperature lower than access temperature threshold values specifically for storing in OSD in described one-level, using OSD minimum for load in described secondary storage as migration target OSD, and described access temperature is moved in the migration target OSD of described secondary storage lower than the data object of accessing temperature threshold values; When there is the data object of access temperature greater than or equal to access temperature threshold values in described secondary storage OSD, using OSD minimum for load in described one-level storage as migration target OSD, and the data object of described access temperature greater than or equal to access temperature threshold values is moved in the migration target OSD of described one-level storage.
Compared with prior art, the present invention includes: in advance data are stored in units of data object in object storage device OSD, OSD is divided in the storage of described one-level or described secondary storage; Pre-set access temperature threshold values; Obtain the access temperature of data object in the storage of described one-level and described secondary storage OSD; If described one-level stores in OSD there is the data object of access temperature lower than access temperature threshold values, described access temperature is moved in described secondary storage OSD lower than the data object of accessing temperature threshold values; If there is the data object of access temperature greater than or equal to access temperature threshold values in described secondary storage OSD, the data object of described access temperature greater than or equal to access temperature threshold values is moved in described one-level storage OSD.The present invention by carrying out storing and moving in the OSD of different stage by data, because data object is less, so simplify the process to data in transition process in units of data object in OSD.In addition, by arranging access temperature threshold values, storing in OSD in one-level only has access temperature just to move lower than the data object of accessing temperature threshold values, in secondary storage OSD, only have access temperature just to move greater than or equal to the data object of accessing temperature threshold values, decrease the data volume of migration, thus accelerate transition process.
Accompanying drawing explanation
Fig. 1 is the Organization Chart of graded memory management system of the present invention.
Fig. 2 is the schematic flow sheet realizing the method for hierarchical storage management during cloud of the present invention stores.
Fig. 3 is the structural representation realizing the device of hierarchical storage management during cloud of the present invention stores.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.By these exemplifying embodiments of enough detailed description, those skilled in the art are made to put into practice the present invention.Without departing from the spirit and scope in the present invention, can to implement to make logic, realize and other change.
Object storage system take object as the network store system of access interface, object storage file system provides a set of access interface being similar to file operation, and file operation is converted into object accesses, make the multiple application program of user not need to carry out any amendment and just may operate on object storage system.Adopt object interface can make object storage system cross-platform data share, security, performance and intelligent in there is advantage.
In object storage system, data are deposited in units of object, and object can provide the integrality of data.Be that point level framework of granularity is no longer file but focus object in file due to the object of migration with object, do the data volume just decreasing migration like this, simultaneously because object is less, enormously simplify the process to data in transition process, accelerate transition process.
Cloud of the present invention realizes the method and system of hierarchical storage management in storing, adopt the classification carrying out data in units of object store and carry out Data Migration, realize hierarchical storage management.
Fig. 1 is the Organization Chart of graded memory management system of the present invention, as shown in Figure 1, this graded memory management system comprises multiple object storage device (OSD, Object-based Storage Device), in OSD, data store in units of object, and each OSD comprises multiple data object.
These OSD are at least divided into two parts, in a particular embodiment of the present invention, are divided into two-level memory, wherein one-level stores, for depositing the hot spot data object of often access; Secondary storage, for depositing the cold data object of infrequently accessing.
In the present invention, each OSD during one-level stores is provided with hierarchical agent, and this hierarchical agent is used for carrying out hot statistics to data object, and carries out the migration of data object according to hot statistics result.
Fig. 2 is the schematic flow sheet realizing the method for hierarchical storage management during cloud of the present invention stores, and as shown in Figure 2, this cloud stores and at least comprises one-level storage and secondary storage, and the method comprises:
Data are stored by step 21 in advance in units of data object in OSD, are divided into by OSD in one-level storage or secondary storage.
In this step, can according to the readwrite performance of OSD storage medium, OSD is divided in one-level storage or secondary storage, particularly, the readwrite performance of storage medium is divided into one-level greater than or equal to the OSD of preset value store, the readwrite performance of storage medium is divided into secondary storage lower than the OSD of preset value.Such as SSD hard disk and SATA hard disc, the former single-deck performance is at about 400MB/s, and do one-level and store, the latter's single-deck performance, at about 100MB/s, does secondary storage.Certainly, can also divide OSD according to other performances, not limit at this.
Step 22, pre-sets access temperature threshold values.
In this step, access temperature can be added up based on different access strategies, such as: access time, access frequency, access times or object properties etc.
If access temperature was added up based on the access time, access temperature threshold values is access time section, namely accessed at this time period data object;
If access temperature is added up based on access frequency, access temperature threshold values is the access frequency value in setting-up time section;
If access temperature is added up based on access times, access temperature threshold values is the access times value in setting-up time section;
If access temperature is added up based on object properties, if for object size, access temperature threshold values is object size value;
Certainly, can also add up based on other access strategy, not repeat one by one at this.In addition, the combined strategy of the access time that access strategy also can be, access frequency, access times or object properties etc., does not also repeat one by one at this.
Step 23, obtains the access temperature of data object in one-level storage and secondary storage OSD.
In one-level storage OSD, memory access temperature is greater than or equal to the data object of access temperature threshold values, and in secondary storage OSD, memory access temperature is lower than the data object of access temperature threshold values.
In this step, if pre-set the cycle, then periodically obtain the access temperature of the data object in one-level storage; If do not arrange the cycle, then the access temperature of the data object in the storage of Real-time Obtaining one-level.
Step 24, judges one-level stores in OSD whether there is the data object of access temperature lower than access temperature threshold values, if existed, enters step 25, if there is no, enters step 26.
Step 25, moves to this data object in secondary storage OSD.
Before this step, also comprise: determine the migration target OSD of this data object in secondary storage, specifically can according to the load of OSD in secondary storage, select to meet pre-conditioned OSD carries out this data object migration as migration target OSD, this is pre-conditioned can be the minimum OSD of load.
Transition process can shown in reference diagram 1, and one-level stores in OSD accesses temperature and move in secondary storage OSD lower than the data object of access temperature threshold values.
Step 26, judges whether there is the data object of access temperature greater than or equal to access temperature threshold values in secondary storage OSD, if existed, enter step 27; If there is no, process ends.
Step 27, moves to one-level and stores in OSD by this data object.
Before this step, also comprise: determine the migration target OSD that this data object stores in one-level, the load of OSD in specifically can storing according to one-level, will meet pre-conditioned OSD and to carry out as migration target OSD the migration of this data object, and this is pre-conditioned can be the minimum OSD of load.
Transition process can shown in reference diagram 1, accesses temperature and move to one-level greater than or equal to the data object of access temperature threshold values and store in OSD in secondary storage OSD.
It should be noted that step 24 and step 26 can be carried out according to the mode of the specific embodiment of the invention, also first can carry out the judgement of data object in secondary storage OSD, carrying out the judgement of data object in one-level storage OSD, not limiting at this.
The present invention by carrying out storing and moving in the OSD of different stage by data, because data object is less, so simplify the process to data in transition process in units of data object in OSD.In addition, by arranging access temperature threshold values, storing in OSD in one-level only has access temperature just to move lower than the data object of accessing temperature threshold values, in secondary storage OSD, only have access temperature just to move greater than or equal to the data object of accessing temperature threshold values, decrease the data volume of migration, thus accelerate transition process.
Fig. 3 is the structural representation realizing hierarchical storage management device during cloud of the present invention stores, and as shown in Figure 3, comprising:
Pretreatment module, for data being stored in OSD in units of data object in advance, is divided in one-level storage or secondary storage by OSD;
Module is set, for pre-setting access temperature threshold values;
Hot statistics module, for obtaining the access temperature of data object in this OSD, wherein in one-level storage OSD, memory access temperature is greater than or equal to the data object of access temperature threshold values, and in secondary storage OSD, memory access temperature is lower than the data object of access temperature threshold values;
First judge module, for judging one-level stores in OSD whether there is the data object of access temperature lower than access temperature threshold values;
Whether the second judge module, exist the data object of access temperature greater than or equal to access temperature threshold values for judging in secondary storage OSD;
Transferring module, access temperature and move in secondary storage OSD for one-level is stored in OSD lower than the data object of access temperature threshold values, and/or, move to accessing the data object of temperature greater than or equal to access temperature threshold values in secondary storage OSD in one-level storage OSD.
Cloud realizes hierarchical storage management device in storing be that to realize the method for hierarchical storage management in storing with cloud corresponding, therefore, cloud realizes the concrete method realizing realizing during details can store referring to cloud hierarchical storage management of hierarchical storage management device in storing, be not repeated herein.
The present invention by carrying out storing and moving in the OSD of different stage by data, because data object is less, so simplify the process to data in transition process in units of data object in OSD.In addition, by arranging module installation access temperature threshold values, one-level being stored in OSD by hot statistics module and transferring module only has access temperature just to move lower than the data object of access temperature threshold values, the data object only having access temperature greater than or equal to access temperature threshold values in secondary storage OSD is just moved, decrease the data volume of migration, thus accelerate transition process.
Be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.A series of detailed description listed is above only illustrating for feasibility embodiment of the present invention; they are not for limiting the scope of the invention, all do not depart from equivalent implementations that skill of the present invention spirit does or change all should be included within protection scope of the present invention.
Claims (10)
1. cloud realizes a method for hierarchical storage management in storing, and it is characterized in that, described cloud stores and at least comprises one-level storage and secondary storage, and described method comprises:
In advance data are stored in units of data object in object storage device OSD, OSD is divided in the storage of described one-level or described secondary storage;
Pre-set access temperature threshold values;
Obtain the access temperature of data object in the storage of described one-level and described secondary storage OSD;
If described one-level stores in OSD there is the data object of access temperature lower than access temperature threshold values, described access temperature is moved in described secondary storage OSD lower than the data object of accessing temperature threshold values;
If there is the data object of access temperature greater than or equal to access temperature threshold values in described secondary storage OSD, the data object of described access temperature greater than or equal to access temperature threshold values is moved in described one-level storage OSD.
2. method according to claim 1, is characterized in that, described OSD is divided into described one-level store or described secondary storage comprise:
According to the readwrite performance of described OSD storage medium, OSD is divided in the storage of described one-level or described secondary storage.
3. method according to claim 2, is characterized in that, the described load performance according to OSD, OSD is divided into described one-level store or described secondary storage comprise:
The readwrite performance of described storage medium is divided into one-level greater than or equal to the OSD of preset value store, the readwrite performance of storage medium is divided into secondary storage lower than the OSD of preset value.
4. method according to claim 1, is characterized in that, described in pre-set access temperature threshold values and comprise: based on access strategy, pre-set access temperature threshold values;
Described access temperature threshold values comprises one in access time section, access frequency value, access times value and object properties or combination in any.
5. method according to claim 1, is characterized in that, the described one-level of described acquisition stores and the access temperature of data object in described secondary storage OSD, comprising:
Described one-level stores and OSD in described secondary storage obtains the access temperature of data object in this OSD respectively.
6. the method according to any one of Claims 1 to 5, is characterized in that, the described one-level of described acquisition store and described secondary storage OSD in data object access temperature after, also comprise:
Judge described one-level stores in OSD whether there is the data object of access temperature lower than access temperature threshold values;
If described one-level stores in OSD there is the data object of access temperature lower than access temperature threshold values, using OSD minimum for load in described secondary storage as migration target OSD, and the data object of described access temperature lower than access temperature threshold values is moved in the migration target OSD of described secondary storage.
7. the method according to any one of Claims 1 to 5, it is characterized in that, the described one-level of described acquisition store and in described secondary storage OSD data object access temperature after also comprise: judge whether to exist in described secondary storage OSD access temperature greater than or equal to the data object of accessing temperature threshold values;
If there is the data object of access temperature greater than or equal to access temperature threshold values in described secondary storage OSD, using OSD minimum for load in described one-level storage as migration target OSD, and the data object of described access temperature greater than or equal to access temperature threshold values is moved in the migration target OSD of described one-level storage.
8. cloud realizes a hierarchical storage management device in storing, and it is characterized in that, described cloud stores and at least comprises one-level storage and secondary storage, and described device comprises:
Pretreatment module, for data being stored in object storage device OSD in units of data object in advance, is divided in the storage of described one-level or described secondary storage by OSD;
Module is set, for pre-setting access temperature threshold values;
Hot statistics module, for obtaining the access temperature of data object in this device;
Transferring module, when there is the data object of access temperature lower than access temperature threshold values for storing in OSD in described one-level, moves in described secondary storage OSD by described access temperature lower than the data object of access temperature threshold values; When there is the data object of access temperature greater than or equal to access temperature threshold values in described secondary storage OSD, described access temperature is moved to described one-level greater than or equal to the data object of access temperature threshold values and stores in OSD.
9. device according to claim 8, it is characterized in that, described module is set, specifically for based on access strategy, pre-set access temperature threshold values, described access temperature threshold values comprises one in access time section, access frequency value, access times value and object properties or combination in any.
10. device according to claim 8, is characterized in that, described device also comprises:
First judge module, for judging described one-level stores in OSD whether there is the data object of access temperature lower than access temperature threshold values;
Whether the second judge module, exist the data object of access temperature greater than or equal to access temperature threshold values for judging in described secondary storage OSD;
Described transferring module, when there is the data object of access temperature lower than access temperature threshold values specifically for storing in OSD in described one-level, using OSD minimum for load in described secondary storage as migration target OSD, and described access temperature is moved in the migration target OSD of described secondary storage lower than the data object of accessing temperature threshold values; When there is the data object of access temperature greater than or equal to access temperature threshold values in described secondary storage OSD, using OSD minimum for load in described one-level storage as migration target OSD, and the data object of described access temperature greater than or equal to access temperature threshold values is moved in the migration target OSD of described one-level storage.
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