CN103473298A - Data archiving method and device and storage system - Google Patents
Data archiving method and device and storage system Download PDFInfo
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- CN103473298A CN103473298A CN2013104001456A CN201310400145A CN103473298A CN 103473298 A CN103473298 A CN 103473298A CN 2013104001456 A CN2013104001456 A CN 2013104001456A CN 201310400145 A CN201310400145 A CN 201310400145A CN 103473298 A CN103473298 A CN 103473298A
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Abstract
The invention discloses a data archiving method and device and a storage system. The data archiving method is applied to the storage system with at least two storage tiers different in data access speed, and each tier contains containers. The data archiving method includes: judging whether the first container is needed to be transferred to the second storage tier based on access reference information in the first container of the first storage tier or not, if yes, determining the second container in the second storage tier, transferring a data block stored in the first container to the second container, and modifying a container address corresponding to a container number of the first container into a container address of the second container. Due to the fact that each storage tier of the storage system is taken as the same repeated delete domain, time-consuming operations such as repeated data block queries and rewriting of file metadata during transferring of the block data are omitted and efficiency of data block transferring under an archiving setting is effectively improved.
Description
Technical field
The present invention relates to field of data storage, relate in particular to a kind of data archiving method and device and storage system.
Background technology
Generally can be with being with the equipment of heavily deleting function to reduce storage space, can hold more data.Heavily delete and refer to data de-duplication, each file is cut into to a plurality of data blocks according to special algorithm, and be the data block of having stored in storage system in which data block of judgement, which data block is the data block do not had in storage system, and in the container that will comprise in storage system less than the data block store of storage; The metadata of revised file, make it point to the data block in container again.Wherein, the metadata of file refers to the description document that each file is corresponding, described that this file which data block consists of and these data block store in which container.
For saving the data maintenance cost, can carry out data filing, be about in data are stored in the different pieces of information access speed container (container) of storage level by active degree, for example active layer (Active tier) container is for storing the data less than 90 days, and retaining layer (Retention tier) container is used for the data that storage time is of a specified duration and access frequency is low, wherein the retaining layer container can be for example SATA(Serial Advanced Technology Attachment, Serial Advanced Technology Attachment) disk, the storage medium of the low data access speed of array etc.Therefore, in order to realize data filing, need a kind of scheme of Data Migration, with the data placement that access frequency is low on the storage medium of low data access speed.
In prior art, under the filing scene, while heavily deleting Data Migration, at first find out at the overdue file of a certain hierarchical storage, then judge the data block of in the container of next level, whether having stored this document, and the data block of will not store deposits the container of next level in, finally revise the metadata of this document.
For above-mentioned technology, because each level is to look into respectively heavy, be that each level is independently heavily to delete territory, may have the data block of repetition between a plurality of levels, thereby cause data migration process will carry out the time-consuming operations such as the inquiry of repeating data piece, rewritable paper metadata.
Summary of the invention
technical matters
In view of this, the technical problem to be solved in the present invention is how to solve data block transition process under the filing scene and will carry out the time-consuming operation problems such as the inquiry of repeating data piece, rewritable paper metadata.
solution
In order to solve the problems of the technologies described above, according to one embodiment of the invention, provide a kind of data archiving method, be applied at least two storage systems of storing levels that comprise that data access speed is different, each storage level comprises container; Described container refers to the logic storage unit of storage data block, and the data block in any two described containers is different; Described storage system comprises the container mappings table, and described container mappings table is for recording the corresponding relation of container number and capsule address of arbitrary described container, and described capsule address refers to the address of container in storage system.
Described data archiving method comprises: the access reference information of the first container based in the first storage level judges whether described the first container needs to the second storage level migration, wherein, described access reference information comprises at least one that quote in number of times and access times, describedly quote the number of times that number of times means that described the first container is cited, described access times mean described the first container accessed number of times within a predetermined period of time; In the situation that judge that described the first container need to be to described the second storage level migration, determine second container in described the second storage level, the data block of described the first container storage is moved in described second container, and capsule address corresponding with the container number of described the first container in described container mappings table is revised as to the capsule address of described second container.
For above-mentioned data archiving method, in the situation that the data access speed of described the second storage level is lower than the data access speed of described the first storage level, in a kind of possible implementation, the access reference information of described the first container based in the first storage level judges whether described the first container needs to the second storage level migration, comprise: the storage time of the file based in described storage system, judge whether described file expires; If judge, described file expires, and will store the container of the data block that described file comprises as described the first container; Access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
For above-mentioned data archiving method, in the situation that the data access speed of described the second storage level is higher than the data access speed of described the first storage level, in a kind of possible implementation, the access reference information of described the first container based in the first storage level judges whether described the first container needs to the second storage level migration, comprise: writing according to file, delete, and/or read and upgraded in the situation of access reference information of the arbitrary container in described storage system, the container that the access reference information has been upgraded is as described the first container, access reference information after upgrading based on described the first container, judge whether described the first container needs to the second storage level migration, perhaps using each container in each described storage level respectively as described the first container, the access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
In order to solve the problems of the technologies described above, according to one embodiment of the invention, provide a kind of data filing device, be applied at least two storage systems of storing levels that comprise that data access speed is different, each storage level comprises container; Described container refers to the logic storage unit of storage data block, and the data block in any two described containers is different; Described storage system comprises the container mappings table, and described container mappings table is for recording the corresponding relation of container number and capsule address of arbitrary described container, and described capsule address refers to the address of container in storage system.
Described data filing device comprises: the migration management module, access reference information for the first container based on the first storage level judges whether described the first container needs to the second storage level migration, wherein, described access reference information comprises at least one that quote in number of times and access times, describedly quote the number of times that number of times means that described the first container is cited, described access times mean described the first container accessed number of times within a predetermined period of time; Transferring module, with described migration management module, be connected, be used in the situation that described migration management module judges that described the first container need to be to described the second storage level migration, determine second container in described the second storage level, the data block of described the first container storage is moved in described second container, and capsule address corresponding with the container number of described the first container in described container mappings table is revised as to the capsule address of described second container.
For above-mentioned data filing device, in the situation that the data access speed of described the second storage level is lower than the data access speed of described the first storage level, in a kind of possible implementation, described data filing device, also comprise the document management module be connected with described migration management module, wherein: described document management module is for the storage time of the file based on described storage system, judge whether described file expires, and described migration management module is configured to, at described document management module, judge in the overdue situation of described file, the container of the data block that the described file of storage is comprised is as described the first container, and the access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
For above-mentioned data filing device, in the situation that the data access speed of described the second storage level is higher than the data access speed of described the first storage level, in a kind of possible implementation, described migration management module is configured to: writing according to file, delete, and/or read and upgraded in the situation of access reference information of the arbitrary container in described storage system, the container that the access reference information has been upgraded is as described the first container, access reference information after upgrading based on described the first container, judge whether described the first container needs to the second storage level migration, perhaps using each container in each described storage level respectively as described the first container, the access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
In order to solve the problems of the technologies described above, according to one embodiment of the invention, provide a kind of storage system, comprise at least two storage levels that data access speed is different, each storage level comprises container; Described container refers to the logic storage unit of storage data block, and the data block in any two described containers is different; The container mappings table, for the corresponding relation of the container number capsule address that records arbitrary described container, described capsule address refers to the address of container in storage system; And according to the data filing memory storage that adopts any one structure in the embodiment of the present invention.
beneficial effect
In the present invention, at first the access reference information of the first container based in the first storage level judges whether described the first container needs to the second storage level migration, and in the situation that judge that described the first container need to be to described the second storage level migration, determine second container in described the second storage level, the data block of described the first container storage is moved in described second container, and capsule address corresponding with the container number of described the first container in described container mappings table is revised as to the capsule address of described second container.The data archiving method of the embodiment of the present invention, the container of different storage levels can be as the same heavy territory of deleting, solve data migration process as time-consuming operation problems such as the inquiry of repeating data piece, rewritable paper metadata, effectively improved Data Migration efficiency under the filing scene.
According to below with reference to accompanying drawing to detailed description of illustrative embodiments, it is clear that further feature of the present invention and aspect will become.
The accompanying drawing explanation
The accompanying drawing that is included in instructions and forms the part of instructions shows exemplary embodiment of the present invention, feature and aspect together with instructions, and for explaining principle of the present invention.
Fig. 1 illustrates the memory system architecture schematic diagram of the data archiving method application of the embodiment of the present invention;
Fig. 2 illustrates the building-block of logic of the storage system shown in Fig. 1;
Fig. 3 illustrates the process flow diagram of data archiving method according to an embodiment of the invention;
Fig. 4 illustrates the schematic diagram of container migration according to an embodiment of the invention;
Fig. 5 illustrates container access reference information structural drawing according to an embodiment of the invention;
Fig. 6 illustrates the process flow diagram of data archiving method according to another embodiment of the present invention;
Fig. 7 illustrates the schematic diagram of container migration according to another embodiment of the present invention;
Fig. 8 illustrates the process flow diagram according to the data archiving method of further embodiment of this invention;
Fig. 9 illustrates the structured flowchart of data filing device according to an embodiment of the invention;
Figure 10 illustrates the structured flowchart of migration management module according to an embodiment of the invention;
Figure 11 illustrates the structured flowchart of data filing device according to another embodiment of the present invention; And
Figure 12 illustrates memory system architecture block diagram according to an embodiment of the invention.
Embodiment
As described in the background section, the present invention wishes that the technical matters solved is mainly that the data block transition process will carry out the time-consuming operation problems such as the inquiry of repeating data piece, rewritable paper metadata.In order to solve this technical problem, as described in the summary of the invention part, the inventor expects originally, and for the storage system that comprises a plurality of storage levels, the included container of each storage level of take carries out the data block migration as unit; Described container refers to the logic storage unit of storage data block, and the data block in container is different.
Tool is sayed it, at first the access reference information of the first container based in the first storage level judges whether described the first container needs to the second storage level migration, and in the situation that judge that described the first container need to be to described the second storage level migration, determine second container in described the second storage level, the data block of described the first container storage is moved in described second container, and capsule address corresponding with the container number of described the first container in described container mappings table is revised as to the capsule address of described second container.
It should be noted that, said container migration here, comprise the container migration of mentioning in following examples, do not refer to the migration of this logic storage unit of container, but using container as unit, the migration that all data blocks that this container is comprised are carried out.
The storage system that the embodiment of the present invention provides comprises at least two storage levels, each stores the data access speed difference of level, for example, comprise three storage levels, according to each accumulation layer DBMS visit data speed order from high to low, be respectively by solid state hard disc form storage medium the storage level, form the storage level of storage medium and formed the storage level of storage medium by tape by disk.
Describe various exemplary embodiments of the present invention, feature and aspect in detail below with reference to accompanying drawing.The identical same or analogous element of Reference numeral presentation function in accompanying drawing.Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, needn't draw accompanying drawing in proportion.
Here special-purpose word " exemplary " means " as example, embodiment or illustrative ".Here needn't be interpreted as being better than or being better than other embodiment as " exemplary " illustrated any embodiment.
In addition, for better explanation the present invention, provided numerous details in embodiment hereinafter.It will be appreciated by those skilled in the art that and there is no these details, the present invention can implement equally.In the other example, the method for knowing for everybody, means, element and circuit are not described in detail, so that highlight purport of the present invention.
Data archiving method is applied to storage system as shown in Figure 1 according to an embodiment of the invention, this storage system is divided into a plurality of storage levels according to the data access speed of storage medium, specifically can be divided into active layer (Active tier) and a plurality of retaining layer (Retention tier).Wherein, the data access speed as the data access speed of the storage level of active layer higher than the storage level as retaining layer is also different as the data access speed of respectively storing between level of retaining layer.In a kind of possible implementation, active layer storage writes the data in storage system 90 days, and the retaining layer storage writes storage system time data more of a specified duration, for example data of 90 days to 1 year, 1 year to 7 years.Heavily delete data according to storage time and accessed number of times be stored in data access speed different respectively store level.Each is stored level and comprises container.
The building-block of logic that Fig. 2 is the storage system shown in Fig. 1, as shown in Figure 2, the level of respectively storing of storage system respectively comprises three containers (Container).Wherein, NameSpace (Namespace) is to point to storage space that the user presents such as a file system, file (File) is the file of storing in NameSpace, data block (chunk) is based on and heavily deletes the deblocking that function goes out from Divide File, each container of storing in level is the logic storage unit of storage data block of file after overweight deleting, therefore the data block in container is mutually different, simultaneously because storage system is used the unified territory of heavily deleting, what is called is heavily deleted territory, refer to the scope of searching the repeating data piece, storage system is used the unified territory of heavily deleting, refer to search the repeating data piece in all storage levels of whole storage system, therefore, use respectively and independently heavily delete territory with respect to each traditional accumulation layer level, the data block of the container storage of respectively storing level of the storage system that the embodiment of the present invention provides is all different.
Fig. 3 is the process flow diagram of data archiving method according to an embodiment of the invention.As shown in Figure 3, this data archiving method mainly comprises the following steps:
S310, the storage time of the file based on stored, judge whether described file expires.
Generally, when archive is stored, by upper layer software (applications) or user determine file should be in storage system storage time of a certain storage level.Can determine according to this time whether file expires.
S320 is judging in the overdue situation of described file that the metadata based on described file is determined the container of each data block of the described file of storage.
Wherein, described metadata comprises block number, container number and side-play amount, described block number means the numbering of the data block that described file comprises, described container number means to store the numbering of the container of described data block, and described side-play amount means the position of described data block store on described container.
S330, for determined container, the access reference information based on described container judges whether described container needs the storage level migration low to data access speed.Wherein, the data access speed here is low is for the data access speed of the storage level at described container place.
Wherein, described access reference information comprises quotes number of times and/or access times, describedly quotes the number of times that number of times means that described container is cited, and described access times mean described container accessed number of times within a predetermined period of time.
S340, in the situation that judge the storage level migration that described container need to be low to data access speed, obtain a new container of the storage level that described data access speed is low, the data block of described container storage is moved in described new container, and will the memory address corresponding with the container number of described container be updated to the memory address of described new container.
The data archiving method of the schematic view illustrating the present embodiment moved in conjunction with the container shown in Fig. 4 particularly.At first, arrange overdue one group of file the storage time of a certain storage level in storage system configured during according to archive, and according to the definite container of storing the data block of described expiring file of the metadata of described expiring file, as shown in Figure 4, suppose file 1(F1) data block store in the first container c11 of active layer La, file 2(F2) data block is stored in respectively in the second container c12 and the 3rd container c13 of active layer La, file 3(F3) data block be stored in respectively in the first container c31 and the 3rd container c33 of retaining layer Lr1.These containers may comprise other and store the data block of not yet due file, so, next for these containers, based on it, access reference information separately judges whether each container needs to move to retaining layer.The 3rd container c13 that supposes active layer La meets transition condition, it is migrated to retaining layer Lr0.
Again particularly, the process that the 3rd container c13 of active layer La migrates to retaining layer Lr0 mainly completes by the container mappings table, the container mappings table is for recording the corresponding relation of container number and capsule address of container, and wherein capsule address is for meaning that container is in the position of storing level.All containers are all to get the memory address of the space of certain-length as container from the address space of storage level.In a kind of possible implementation, the structure of container mappings table is that list item is the table that container number-container initial memory address forms.This transition process comprises: at first apply for the new container c21 in retaining layer Lr0, suppose that the initial memory address of the new container c21 of application is 1100; Then the data block of container c13 storage is all moved in new container c21; Finally revise the container storage address of container number correspondence in the container mappings table of container c13, for example, the container number of supposing the 3rd container c13 of active layer La is 0003, and the container initial memory address is 0300, and the initial memory address that is 0003 correspondence by container number is revised as 1100.
Like this, storage system is respectively stored level as the same heavy territory of deleting, and the data block transition process has been avoided as time-consuming operations such as the inquiry of repeating data piece, rewritable paper metadata, has effectively improved the efficiency of data block migration under the filing scene.
In a kind of possible implementation, the satisfied transition condition of the 3rd container c13 of active layer La comprises following any one: the number of times that the file that described container is higher by liveness is quoted is enough few; The number of times that lower file is quoted by liveness is abundant; The number of times accessed in nearest a period of time is enough few.Wherein, liveness means the storage time of file in storage system and/or is read frequency, and the file liveness is higher, and the storage time of supporting paper in storage system is shorter and/or to be read frequency higher.
In a kind of possible specific implementation, the satisfied transition condition of the 3rd container c13 of active layer La can be designed as following any one: the ratio that first of container c13 quotes the total degree that number of times and container c13 be cited is less than first threshold; Perhaps second of container c13 the ratio of quoting the total degree that number of times and container c13 be cited is greater than Second Threshold; Container c13 accessed number of times within a predetermined period of time is enough little.Wherein, described first quotes number of times means that container c13 is stored the number of times that file that the time is less than very first time length is quoted, and described second quotes number of times means that container c13 is stored the number of times that file that the time is greater than the second time span is quoted.
Particularly, the access reference information of container c13 can be designed as structure as shown in Figure 5, suppose that storage system is according to the file difference of storage time, be divided into 0-60 days, 60 days-1 year, 1 year-7 years three levels, the number of times of quoting of container c13 also is divided into three, respectively by the number of times of quoting of the file of 0-60 days, 60 days-1 year, 1 year-7 years three time periods storage, only one of the access times of container c13, i.e. container c13 accessed number of times within a predetermined period of time.
Again particularly, very first time length is made as 60 days, the second time span is made as 1 year, and predetermined amount of time is made as 30 days, and first threshold is made as 10%, Second Threshold is made as 90%, the 3rd threshold value is made as 100, and it is x1 that first of container c13 quotes number of times, and second to quote number of times be x2, always quoting number of times is x1+x2+x3, and access times are x.If first quotes number of times and always quotes the ratio x1/(x1+x2+x3 of number of times) be less than first threshold 10%, perhaps second quote number of times and always quote the ratio x2/(x1+x2+x3 of number of times) be greater than Second Threshold 90%, perhaps access times x is less than the 3rd threshold value 100, and container c13 need to move to retaining layer Lr0.
It should be noted that, although introduced and judged whether described container needs the storage level migration low to data access speed as example by the access of the container shown in Fig. 5 reference information structure, the data access speed here is low is for the data access speed of the storage level at described container place, but the method that it will be appreciated by those skilled in the art that the possible container of the present invention access reference information structure and statistics container access reference information should be not limited to this.In fact, the user can set very first time length, the second time span, predetermined amount of time, first threshold, Second Threshold and the 3rd threshold value flexibly according to personal like and/or practical application scene fully, according to the access reference information of the container of actual count, judges whether described container needs the storage level migration low to data access speed.
In the situation that write, delete and/or read due to file the access reference information of having upgraded container in described storage system, the data archiving method process flow diagram as shown in Figure 6, judge with the access reference information after upgrading based on container whether described container needs the storage level migration high to data access speed, the data access speed height here is for the data access speed of the storage level at described container place, and in the situation that described container need to be high to data access speed storage level migration, complete the transition process of described container.
Wherein, the so-called situation that writes, deletes and/or read the access reference information of upgrading container due to file comprises: when file writes storage system, at first file is carried out to piecemeal by certain algorithm, be divided into a plurality of data blocks, then the data block of having stored in the container of all storage levels in these data blocks and storage system is compared, obtain data block and the non-repetitive data block of repetition.The data block repeated adds one to the number of times of quoting of the container at its place, and all non-repetitive data blocks form a container together, and each data block adds one to the number of times of quoting of this container; When file is deleted in whole storage system, determine according to the metadata of file the container that it is quoted, each data block of this document subtracts one to the number of times of quoting of these containers; And, when file is read, according to the metadata of file, determine the container that it is quoted, each data block of this document adds one to the access times of these containers.
As shown in Figure 6, data archiving method mainly comprises the following steps according to another embodiment of the present invention:
S610, the access reference information after upgrading based on container judges whether described container needs the storage level migration high to data access speed.Wherein, the data access speed height here is for the data access speed of the storage level at described container place.
S620, in the situation that judge the storage level migration that described container need to be high to data access speed, obtain a new container of the storage level that described data access speed is high, the data block of described container storage is moved in described new container, and will the memory address corresponding with the container number of described container be updated to the memory address of described new container.
The data archiving method of the schematic view illustrating the present embodiment moved in conjunction with the container shown in Fig. 7 particularly.As shown in Figure 7, the data block store of file 1 is in the first container c11 of active layer La, the data block of file 2 is stored in respectively in the second container c12 and the 3rd container c13 of active layer La, and the data block of file 3 is stored in respectively in the first container c21, the second container c22 and the 3rd container c23 of retaining layer Lr0.The the first container c21 that supposes retaining layer Lr0 meets transition condition, it is migrated to active layer La.
Again particularly, the process that the first container c21 of retaining layer Lr0 migrates to active layer La mainly completes by the container mappings table, it is example that the structure of container mappings table still be take the described structure of embodiment 1, this transition process comprises: at first application enlivens the new container c13 in layer La, supposes that the initial memory address of application is 1100; Then the data block of container c21 storage is all moved in described new container c13; Finally revise the container storage address of container number correspondence in the container mappings table of container c21, for example, the container number of supposing the first container c21 of retaining layer Lr0 is 0001, and the container initial memory address is 0100, and the initial memory address that is 0001 correspondence by container number is revised as 1100.
In a kind of possible implementation, the satisfied transition condition of the first container c21 of retaining layer Lr0 comprises following any one: the number of times that the file that described container is higher by liveness is quoted is abundant; The number of times that lower file is quoted by liveness is enough few; Abundant at the number of times that nearest a period of time is accessed.Wherein, liveness means the storage time of file in storage system and/or is read frequency, and the file liveness is higher, and the storage time of supporting paper in storage system is shorter and/or to be read frequency higher.
In a kind of possible specific implementation, the satisfied transition condition of the first container c21 of retaining layer Lr0 can be designed as following any one: the ratio that the 3rd of container c21 quotes the total degree that number of times and container c21 be cited is greater than first threshold; Perhaps the 4th of container c21 the ratio of quoting the total degree that number of times and container c21 be cited is greater than Second Threshold; Container c21 accessed number of times within a predetermined period of time is enough little.Wherein, the described the 3rd quotes number of times means that container c21 is stored the number of times that file that the time is less than the 3rd time span is quoted, and the described the 4th quotes number of times means that container c21 is stored the number of times that file that the time is greater than the 4th time span is quoted.
Particularly, the access reference information of container c21 also can be designed as structure as shown in Figure 5, in a kind of possible implementation, the 3rd time span is made as 60 days, the 4th time span is made as 1 year, and predetermined amount of time is made as 30 days, and the 4th threshold value is made as 90%, the 5th threshold value is made as 10%, the 6th threshold value is made as 100, and it is x1 that the 3rd of described container is quoted number of times, and the 4th to quote number of times be x2, always quoting number of times is x1+x2+x3, and access times are x.If the 3rd quotes number of times and always quotes the ratio x1/(x1+x2+x3 of number of times) be greater than the 4th threshold value 90%, perhaps the 4th quote number of times and always quote the ratio x2/(x1+x2+x3 of number of times) be less than the 5th threshold value 10%, perhaps access times x is greater than the 6th threshold value 100, and container c21 need to be to active layer La migration.
It should be noted that, although introduced and judged whether described container needs the storage level migration high to data access speed as example by the access of the container shown in Fig. 5 reference information structure, the data access speed here is low is for the data access speed of the storage level at described container place, but the method that it will be appreciated by those skilled in the art that the possible container of the present invention access reference information structure and statistics container access reference information should be not limited to this.In fact, the user can set the 3rd time span, the 4th time span, predetermined amount of time, the 4th threshold value, the 5th threshold value and the 6th threshold value flexibly according to personal like and/or practical application scene fully, according to the access reference information of the container of actual count, judges whether described container needs the storage level migration high to data access speed.
Access reference information after the data archiving method of the embodiment of the present invention upgrades based on container, judge whether described container needs the storage level migration high to data access speed, if migrating to the container of the storage level migration that data access speed is low is accessed frequently and quotes, can timely it be moved back, can improve like this user's access speed.In addition, the container of different storage levels can be as the same heavy territory of deleting, and the data block transition process has been avoided as time-consuming operations such as the inquiry of repeating data piece, rewritable paper metadata, has improved the efficiency of data block migration.
embodiment 3
Fig. 8 illustrates the process flow diagram according to the data archiving method of further embodiment of this invention.The label that in Fig. 8, label is identical with Fig. 6 has identical function, for simplicity's sake, omits the detailed description to these labels.Shown in data archiving method shown in Fig. 8 and Fig. 6, the key distinction of data archiving method is, judge whether need to be high to data access speed storage level migration be not upgrade and trigger by the access reference information of container, but regularly carry out.
In a kind of possible implementation, as shown in Figure 8, step before step S620 is S810, and namely for described container, regularly the access reference information based on described container judges whether described container needs the storage level migration high to data access speed.
Particularly, the background scanning process of storing level periodically scans the access reference information of container in this level by each, scan period can be 30 days, it can be also 45 days, according to personal like and/or practical application scene, set flexibly fully, then can judge whether described container meets the migration requirement based on the described container transition condition of the embodiment of the present invention 2, require in the situation that described container meets migration, can complete according to the described container transition process of the embodiment of the present invention 2 migration of container.In the embodiment of the present invention, the height of accumulation layer DBMS access speed is all for the data access speed of the current place storage of described container level.
Like this, even storage system is not set the scanning to the access reference information of the container that writes, deletes and/or read the access reference information of having upgraded container due to file, can judge by the access reference information of regularly based on each, storing the container of level whether described container needs the storage level migration migration high to data access speed, if migrating to the container of the storage level migration that data access speed is low is accessed frequently and quotes, still can timely it be moved back, can improve like this user's access speed.
embodiment 4
Fig. 9 is the structured flowchart of data filing device according to an embodiment of the invention, and this data filing application of installation is in storage system as shown in Figure 1, and the specific descriptions of described storage system can be described with reference to preceding method embodiment, do not repeat them here.As shown in Figure 9, described data filing device comprises: migration management module 920 and transferring module 930.
Wherein, migration management module 920 judges for the access reference information of the first container based on the first storage level whether described the first container needs to the second storage level migration, wherein, described access reference information comprises at least one that quote in number of times and access times, describedly quote the number of times that number of times means that described the first container is cited, described access times mean described the first container accessed number of times within a predetermined period of time.Transferring module 930 is connected with migration management module 920, be used in the situation that 920 of migration management moulds judge that described containers need to be to the second storage level migration, determine second container in described the second storage level, the data block of described the first container storage is moved in described second container, and capsule address corresponding with the container number of described the first container in described container mappings table is revised as to the capsule address of described second container.
In a kind of possible implementation, described data filing device also comprises the document management module 910 be connected with migration management module 920, document management module 910 in the situation that described second the storage level data access speed lower than described first the storage level data access speed, the storage time of the file based in described storage system, judge whether described file expires.At document management module 910, judge in the overdue situation of described file, migration management module 920 is configured to the container of data block that the described file of storage is comprised as described the first container; And the access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
Generally, when archive is stored, by upper layer software (applications) or user determine file should be in storage system storage time of a certain storage level, be kept at other places of document management module 910 or storage system this storage time.According to this time, document management module 910 can determine whether file expires.
In a kind of possible implementation, migration management module 920 also comprises three judging units 921,922,923, for judging whether described the first container needs to the process of the second storage level migration, as shown in figure 10, if judgment result is that of arbitrary judging unit is to judge that described the first container need to move to the second storage level:
The first judging unit 921, quote number of times and account for the ratio of always quoting number of times and whether be less than first threshold for judging first of described the first container, wherein said first quotes number of times means that the first file quotes the number of times of described the first container, describedly always quote the total degree that number of times means that described the first container is cited, described the first file is the file that is less than the very first time length storage time.
The second judging unit 922, quote number of times and account for the ratio of always quoting number of times and whether be greater than Second Threshold for judging second of described the first container, wherein said second quotes number of times means that the second file quotes the number of times of described the first container, and described the second file is the file that is less than the second time span storage time.
Whether the 3rd judging unit 923, be less than the 3rd threshold value for judging described access times.
The first judging unit 921, the second judging unit 922, the 3rd judging unit 923 can be realized by three comparers, migration management module 920 is carried out and is judged whether described the first container needs to the detailed process of the second storage level migration, wherein, the data access speed of described the second storage level, can be referring to the associated description of embodiment 1 lower than the data access speed of the storage level at described the first container place.
In a kind of possible implementation, in the situation that the data access speed of described the second storage level is higher than the data access speed of described the first storage level, migration management module 920 is configured to, in the situation that according to the access reference information that writes, deletes and/or read the arbitrary container in having upgraded described storage system of file, the container that the access reference information has been upgraded is as described the first container, access reference information after upgrading based on described the first container, judge whether described the first container needs to the second storage level migration; Perhaps using each container in each described storage level respectively as described the first container, the access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
In a kind of possible implementation, migration management module 920 also comprises three judging units 924,925,926, as shown in figure 10, if judgment result is that of arbitrary judging unit is to judge that described the first container need to move to the second storage level:
The 4th judging unit 924, quote number of times and account for the ratio of always quoting number of times and whether be greater than the 4th threshold value for judging the 3rd of described the first container, the wherein said the 3rd quotes number of times means that the 3rd file quotes the number of times of described the first container, describedly always quote the total degree that number of times means that described the first container is cited, described the 3rd file is the file that is less than the 3rd time span storage time;
The 5th judging unit 925, quote number of times and account for the ratio of always quoting number of times and whether be less than the 5th threshold value for judging the 4th of described the first container, the wherein said the 4th quotes number of times means that the 4th file quotes the number of times of described the first container, and described the 4th file is the file that is less than the 4th time span storage time; And
Whether the 6th judging unit 926, be greater than the 6th threshold value for judging described access times.
The 4th judging unit 924, the 5th judging unit 925, the 6th judging unit 926 can be realized by three comparers, migration management module 920 is carried out and is judged whether container needs to the detailed process of the second storage level migration, wherein, the data access speed of described the second storage level, can be referring to the associated description of embodiment 2 higher than the data access speed of the storage level at described the first container place.
Like this, the data filing device of the embodiment of the present invention judges based on the access reference information whether described container needs migration by migration management module 920, in the situation that 920 of migration management moulds judge that described container need to move, the all data blocks that transferring module 930 can comprise described container migrates to suitable storage level, the data block transition process is respectively stored level as the same heavy territory of deleting using storage system, avoided as time-consuming operations such as the inquiry of repeating data piece, rewritable paper metadata, effectively improved the efficiency of data block migration under the filing scene.
In addition, if storage system is because file writes, delete, and/or read and upgraded the access reference information of container, perhaps storage system using each container in each described storage level respectively as being concerned container, access reference information after the data filing device of the embodiment of the present invention upgrades based on container by migration management module 920, the access reference information that perhaps is concerned container judges whether described container needs the storage level migration high to data access speed, if migrating to the container of the storage level that data access speed is low is accessed frequently and quotes, can timely it be moved back by transferring module 930, can improve user's access speed like this.
embodiment 5
The structured flowchart of the data filing device that Figure 11 is another embodiment of the present invention.Described data filing device 1100 can be host server, personal computer PC or portable portable computer or the terminal etc. that possess computing power.The specific embodiment of the invention is not done restriction to the specific implementation of computing node.
Described data filing device 1100 comprises processor (processor) 1110, communication interface (Communications Interface) 1120, storer (memory) 1130 and bus 1140.Wherein, processor 1110, communication interface 1120 and storer 1130 complete mutual communication by bus 1140.
Processor 1110 is for executive routine.Processor 1110 may be a central processor CPU, or application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or is configured to implement one or more integrated circuit of the embodiment of the present invention.
Storer 1130 is for storage file.Storer 1130 may comprise the high-speed RAM container, also may also comprise non-volatile container (non-volatile memory), for example at least one case for magnetic disk.Storer 1130 can be also vessel array.Storer 1130 also may be by piecemeal, and described can become virtual volume by certain principle combinations.
In a kind of possible embodiment, said procedure can be the program code that comprises computer-managed instruction.This program specifically can be used for: the access reference information of the first container based in the first storage level judges whether described the first container needs to the second storage level migration, wherein, described access reference information comprises at least one that quote in number of times and access times, describedly quote the number of times that number of times means that described the first container is cited, described access times mean described the first container accessed number of times within a predetermined period of time; In the situation that judge that described the first container need to be to described the second storage level migration, determine second container in described the second storage level, the data block of described the first container storage is moved in described second container, and capsule address corresponding with the container number of described the first container in described container mappings table is revised as to the capsule address of described second container.
In a kind of possible embodiment, in the situation that the data access speed of described the second storage level is lower than the data access speed of described the first storage level, the access reference information of described the first container based in the first storage level judges whether described the first container needs to the second storage level migration, comprise: the storage time of the file based in described storage system, judge whether described file expires; If judge, described file expires, and will store the container of the data block that described file comprises as described the first container; Access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
In a kind of possible embodiment, in the situation that the data access speed of described the second storage level is higher than the data access speed of described the first storage level, the access reference information of described the first container based in the first storage level judges whether described the first container needs to the second storage level migration, comprise: writing according to file, delete, and/or read and upgraded in the situation of access reference information of the arbitrary container in described storage system, the container that the access reference information has been upgraded is as described the first container, access reference information after upgrading based on described the first container, judge whether described the first container needs to the second storage level migration, perhaps using each container in each described storage level respectively as described the first container, the access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
Data filing mechanism in data filing device according to the above embodiment of the present invention, with the data filing device of embodiment 4 explain similar, those skilled in the art will be understood that, aforesaid possible implementation all can be applicable to the present embodiment and can obtain identical beneficial effect, repeats no more here.
embodiment 6
Figure 12 is memory system architecture block diagram according to an embodiment of the invention, and as shown in figure 12, this storage system 1200 can comprise: three storage levels 1210,1220,1230, container mappings table, and data filing device 1240.
Wherein, the data access speed of storage level 1210,1220,1230 is different, the data access speed of storage level 1210 is the highest, store the data in 90 days, the data access speed of storage level 1220 is taken second place, store the data of 90 days to 1 year, the data access speed of storage level 1230 is minimum, stores the data of 1 year to 7 years.Heavily delete data according to storage time and accessed number of times be stored in data access speed different respectively store level.Storage level 1210,1220,1230 respectively comprises three containers, and described container refers to the logic storage unit of storage data block, and the data block in any two described containers is different.The container mappings table is for recording the corresponding relation of container number and capsule address of arbitrary described container, and described capsule address refers to the address of container in storage system.
It should be noted that, in order more clearly to introduce data archiving method and device and storage system, the embodiment of the present invention only take the storage level comprise that three containers are example, but it will be appreciated by those skilled in the art that in actual storage system, a storage level can comprise the even container of 1,000,000 orders of magnitude of 100,000 orders of magnitude.
In a kind of possible implementation, data filing device 1240 can adopt the above embodiment of the present invention 4 or the described structure of 5 any one, the access reference information that data filing device 1240 is mainly used in the first container in the first storage level judges whether described the first container needs to the second storage level migration, and in the situation that judge that described the first container need to be to described the second storage level migration, determine second container in described the second storage level, the data block of described the first container storage is moved in described second container, and capsule address corresponding with the container number of described the first container in described container mappings table is revised as to the capsule address of described second container.
The container that the storage system of the embodiment of the present invention is respectively stored in level is the logic storage unit of storage data block of file after overweight deleting, therefore the data block in container is mutually different, simultaneously because storage system is used the unified territory of heavily deleting, therefore, use respectively from each traditional accumulation layer level that independently heavily to delete territory different, the data block of the container storage of respectively storing level of the storage system that the embodiment of the present invention provides is all different.Thereby can guarantee that the data block transition process respectively stores level as the same heavy territory of deleting using this storage system, avoid as time-consuming operations such as the inquiry of repeating data piece, rewritable paper metadata, effectively improve the efficiency of data block migration under the filing scene.
Those of ordinary skills can recognize, each exemplary cell and algorithm steps in embodiment described herein can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions realize with hardware or software form actually, depend on application-specific and the design constraint of technical scheme.The professional and technical personnel can realize described function for specific application choice diverse ways, but this realization should not thought and exceeds scope of the present invention.
If the form of computer software of usining realizes described function and as production marketing independently or while using, can think to a certain extent that all or part of (part for example prior art contributed) of technical scheme of the present invention is with the form embodiment of computer software product.This computer software product is stored in the non-volatile memory medium of embodied on computer readable usually, comprises that some instructions are used so that computer equipment (can be personal computer, server or the network equipment etc.) is carried out all or part of step of various embodiments of the present invention method.And aforesaid storage medium comprises the various media that can be program code stored such as USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-Only Memory), magnetic disc or CD.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by the described protection domain with claim.
Claims (7)
1. a data archiving method, is characterized in that, described method is applied at least two storage systems of storing levels that comprise that data access speed is different, and each storage level comprises container; Described container refers to the logic storage unit of storage data block, and the data block in any two described containers is different; Described storage system comprises the container mappings table, and described container mappings table is for recording the corresponding relation of container number and capsule address of arbitrary described container, and described capsule address refers to the address of container in storage system; Described data archiving method comprises:
The access reference information of the first container based in the first storage level judges whether described the first container needs to the second storage level migration, wherein, described access reference information comprises at least one that quote in number of times and access times, describedly quote the number of times that number of times means that described the first container is cited, described access times mean described the first container accessed number of times within a predetermined period of time;
In the situation that judge that described the first container need to be to described the second storage level migration, determine second container in described the second storage level, the data block of described the first container storage is moved in described second container, and capsule address corresponding with the container number of described the first container in described container mappings table is revised as to the capsule address of described second container.
2. data archiving method according to claim 1, it is characterized in that, in the situation that the data access speed of described the second storage level is lower than the data access speed of described the first storage level, the access reference information of described the first container based in the first storage level judges whether described the first container needs, to the second storage level migration, to comprise:
The storage time of the file based in described storage system, judge whether described file expires;
If judge, described file expires, and will store the container of the data block that described file comprises as described the first container;
Access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
3. data archiving method according to claim 1, it is characterized in that, in the situation that the data access speed of described the second storage level is higher than the data access speed of described the first storage level, the access reference information of described the first container based in the first storage level judges whether described the first container needs, to the second storage level migration, to comprise:
In the situation that according to the access reference information that writes, deletes and/or read the arbitrary container in having upgraded described storage system of file, the container that the access reference information has been upgraded is as described the first container, access reference information after upgrading based on described the first container, judge whether described the first container needs to the second storage level migration; Perhaps
Using each container in each described storage level, respectively as described the first container, the access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
4. a data filing device, is characterized in that, described application of installation is in the storage system that comprises at least two storage levels that data access speed is different, and each storage level comprises container; Described container refers to the logic storage unit of storage data block, and the data block in any two described containers is different; Described storage system comprises the container mappings table, and described container mappings table is for recording the corresponding relation of container number and capsule address of arbitrary described container, and described capsule address refers to the address of container in storage system; Described data filing device comprises:
The migration management module, access reference information for the first container based on the first storage level judges whether described the first container needs to the second storage level migration, wherein, described access reference information comprises at least one that quote in number of times and access times, describedly quote the number of times that number of times means that described the first container is cited, described access times mean described the first container accessed number of times within a predetermined period of time;
Transferring module, with described migration management module, be connected, be used in the situation that described migration management module judges that described the first container need to be to described the second storage level migration, determine second container in described the second storage level, the data block of described the first container storage is moved in described second container, and capsule address corresponding with the container number of described the first container in described container mappings table is revised as to the capsule address of described second container.
5. data filing device according to claim 4, it is characterized in that, in the situation that the data access speed of described the second storage level also comprises lower than the data access speed of described the first storage level the document management module be connected with described migration management module, wherein:
Described document management module, for the storage time of the file based on described storage system, judges whether described file expires, and
Described migration management module is configured to, and at described document management module, judges in the overdue situation of described file, and the container of the data block that the described file of storage is comprised is as described the first container; And the access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
6. data filing device according to claim 4, is characterized in that, in the situation that described second the storage level data access speed higher than described first the storage level data access speed, described migration management module is configured to:
In the situation that according to the access reference information that writes, deletes and/or read the arbitrary container in having upgraded described storage system of file, the container that the access reference information has been upgraded is as described the first container, access reference information after upgrading based on described the first container, judge whether described the first container needs to the second storage level migration; Perhaps
Using each container in each described storage level, respectively as described the first container, the access reference information based on described the first container, judge whether described the first container needs to the second storage level migration.
7. a storage system, is characterized in that, comprising:
At least two storage levels that data access speed is different, each storage level comprises container; Described container refers to the logic storage unit of storage data block, and the data block in any two described containers is different;
The container mappings table, for the container number that records arbitrary described container and the corresponding relation of capsule address, described capsule address refers to the address of container in storage system; And
According to the described data filing device of any one in claim 4 to 6.
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